1269823 (1) 玖、發明說明 【發明所屬之技術領域] 本發明’是有關適合廢棄物處分場、建築物的地下 壁、道路擋土壁等的需要遮水處的鋼製壁及其製造方法。 【先前技術】 在地下構造物的建設用的擋土壁或港灣·水域施設建 5又日寸的女王衣置寺’鋼板捲是多被使用。其理由，是因爲 由鋼材的高品質材料所產生的高剛性壁體是可在比較短的 施工期間內構築，且遮水性比較優秀。 當然鋼板樁本體的鋼材本身，水是完全不會通過，但 是在嵌合狀態存在於接頭部分的間隙部分因爲水會通過， 所以此接頭部分的間隙會深深地影響鋼板樁的遮水性。 一般，是沖設隨後的接頭部，水是比較容易通過的狀 態，但隨著時間的經過，隨著水的流動使接頭內部堵塞土 粒子等’遮水性會漸漸提高，但是土粒子等的接頭內部的 間隙堵塞無法期待的情況，或爲了更提高遮水性，是需要 將此接頭內部的間隙縮小。 但是’此間隙縮小的話，會增加接頭部分的沖設阻 力，遮水性及施工性因爲是相反的要求性能，而無法一味 地縮小或增大接頭部分的間隙，怎樣提高接頭部的遮水性 是其課題之一。 例如，習知的廢棄物處分場等的遮水方法所使用鋼製 壁的情況，在鋼板樁沖設之前，塗抹預定量的膨潤性止水 -5- (2) 1269823 材在接頭部，在沖設後，利用該止水材會因海水等膨潤的 遮水方法。 且，日本公開專利公報200 1 -02692 5 (專利文獻1 ) 「止水壁」是揭不’如第45圖所不是將複數的U字型） 鋼板樁6 1的接頭62藉由熔接形成一體化的止水壁結構體 63，將複數的止水壁結構體63，一邊將其側端緣的接頭 64彼此嵌合一邊與地盤中連設的同時，在相互鄰接的止 水壁結構體63彼此的接頭64的周圍施加地盤改良65。 此外，在日本公開專利公報 07-3 243 2 9 (專利文獻 2 ) ， 「由鋼管柱列所產生的止水壁的構築方法」是揭 示，如第4 6圖所不將作爲鋼管板樁7 1的接頭的一方的母 接頭材 7 3，在一對的翼部74、7 5之中的一方的翼部 7 5 設置朝外方延伸腳部75a，將此鋼管板樁71多數，公接 頭材72及母接頭材73彼此嵌合連結，形成鋼管板樁壁之 後，挖削成爲建造物的構築側的片側的地盤並露出接頭 部，將母接頭材73的腳部75a的先端，在對方的鋼管板 樁7 1的鋼管本體的外側面藉由熔接7 6水密地固定的方 法。 其他的習知技術，如日本專利公開公報0 1 - 1 6 8 7 6 6， 曰本專利公開公報 2000- 1 92446，日本專利公開公報 2000-19245 1，日本專利公開公報2000-073361，日本專利 公開公報 2000-234330，日本專利公開公報 2001· 2 1 443 5，日本專利公開公報200 1 -248 1 52，日本專利公開 公報2002- 1 467 72所揭示發明。 (3) 1269823 【發明內容】 (本發明所欲解決的課題） 對於由鋼板樁等的鋼製壁的施工，是使用膨潤性止水 材的方法，其膨潤性止水材本身的環境安全性或耐久性， 和從往鋼板樁等的塗抹或安裝時至鋼板樁等的沖設爲止的 期間長的情況時，止水材會因雨或結露、濕氣等膨潤，使 鋼板樁等的沖設耗費勞力和時間，在鋼板樁沖設時止水材 會剝落’因熱而碳化等，而有需要確認所形成的遮水壁的 止水性。 此時，需要檢查水是否會從例如廢棄物處分場側流出 遮水壁外側’對於止水不充分的部分，爲了確保止水性而 需要進行漏出部周圍的地盤改良，工資·工期會增加之 外，無法除法會漏出的不安感。 且，U型鋼板樁等的情況時，是止水材因爲是位置於 連續鋼製壁的剖面中立軸，所以施工途中，波浪的外力會 在止水材產生剪斷力，會導致止水材破損。 且，在日本公開專利公報 200 1 -02692 5 (專利文獻 1 )所揭示的發明中，需要配合一體化的止水壁結構體63 的重量，選用重機或夾具之外，也需要進行：止水壁結構 體63的接頭64附近的地盤改良65的止水確保、及使用 於地盤改良6 5的材料的環境安全性確保。 一方面，在日本公開專利公報07-3 243 29 (專利文獻 2 )所揭示的發明中，雖對於接頭部使用熔接，因爲是對 (4) 1269823 於建造物的止水，即作爲地盤的地下水的止水，所以對於 廢棄物處分場等的止水相異，其止水性的程度是只要配合 設置於通常建造物側的排水施設程度即可，與本案發明所 意圖的求得更高遮水性及安全裝置的功能不同。 且，在日本公開專利公報07 -3 243 2 9 (專利文獻2 ) 所揭示的發明中，因爲使用特殊的形狀的母接頭材73， 所以在沖設時母接頭材73會變形，在挖削地盤中的地下 水等時的濕潤狀態或是水中狀態的露出接頭部的垂直熔接 的確實性是被懷疑。且，在這些的方法中無法使用自動熔 接機。 本案發明，其目的是解決上述的習知技術的課題，提 供一種：可形成可進行接頭部的自動熔接的空間，不會損 失施工性，可以有效率且便宜地獲得高遮水性的鋼製壁及 其製造方法。 (用以解決課題的手段） 本發明的申請專利範圍第1項，是一種鋼製壁的製造 方法，將在兩端具有接頭的複數的鋼材彼此連結的鋼製壁 的製造方法，其特徵爲··前述鋼材是將前述接頭彼此嵌合 沖設，形成鋼製壁的一部分或是全部的同時，將暫鋼材沖 設於前述鋼製壁的片側而形成暫設鋼製壁，除去由前述鋼 製壁及前述暫設鋼製壁挾持的領域內的土砂’將前述鋼製 壁的接頭部洗淨後，將該接頭部自動熔接。 具有構成鋼製壁用的接頭的鋼材，如網及在其兩側具 -8 - (5) 1269823 有凸緣的U型鋼板樁、直線型鋼板樁、鋼管板樁、組合這 些及形鋼者等，無特別限定。 暫設鋼材，如上述的U型鋼板樁、直線型鋼板樁、鋼 管板樁、組合這些形鋼者等，無特別限定，且構成鋼製壁 本體的鋼材及暫設的鋼材可爲不同形態。 使用暫設鋼材的目的是爲了形成可自動熔接的空間， 此暫設鋼材是在施工中或是施工後可再利用。且，藉由暫 設鋼材形成的暫設鋼製壁，是不限定連接複數的暫設鋼材 形成的情況，由單一的暫設鋼材形成情況也可以。 接頭部的洗淨，是使熔接可能，進一步爲了確保熔接 的品質而進行，水或是空氣等的高壓噴射等是有效率的。 接頭部的自動熔接，例如由磁鐵將自動熔接用的導引 安裝於鋼板樁等，可以由通常的方法進行。 本發明中，可確保所需的板厚熔接部的長度的熔接速 度，在例如使用 C〇2氣體作爲密封氣體的MAG熔接時 是10〜20cm/分前後，在等離子熔接中可以採用兩倍程 度，橫跨長時間幾乎同程度的品質的熔接，可由簡易的設 定達成。因此，與熔接工的熔接作業相比，可以均質且能 率佳地熔接，使用於鋼板樁的廢棄物處分場等時，熔接延 長愈長，愈可以降低熔接成本。 在鋼製壁的接頭部分以外的地方中，鋼製壁及暫設的 鋼製壁是幾乎接觸較佳，因自動熔接機的大小、具有鋼板 樁等的接頭的鋼材的沖設機的規格等可依據需要，將這些 遠離也可以。 -9 - (6) 1269823 然而，有關接頭熔接部的性能，是使用具有預先濕潤 狀態的非對稱接頭的鋼板樁，變化熔接間隔及速度嘗試接 頭部的自動熔接，藉由將其熔接部切斷測量來檢討熔接板 厚及熔接部的結果，已確認即使接頭是濕潤狀態，也可藉 由自動熔接獲得充分的熔接板厚及熔接部。 本發明，對於需要滿足材料面的環境安全性，且熔接 工的熔接時所需要作業空間或休息空間，熔接本身是下方 向熔接困難的垂直方向熔接（橫方向熔接），將熔接由自 動熔接，已證實即使對於濕潤狀態，鋼材接頭部的熔接也 可能，並可將其適用於實施工。 即，如本發明包圍成爲熔接的對象的接頭部的領域是 由鋼材形成，將其領域內的土砂控削除去的情況時，地下 水是從與接頭部或鋼製壁及暫設鋼製壁的接面（非直接接 觸，挾帶土砂也可）滲出程度由的話，由自動熔接的接頭 部的止水是可能的，且即使考慮此熔接部的腐蝕，也能製 造可維持止水性能的遮水鋼製壁。 且，藉由形成鋼製壁的鋼材的型式或是形態，成爲鋼 製壁的平面寬或熔接對象的接頭部的位置、所需要的暫設 鋼材的枚數等雖相異，但是在這些在形成領域中，因爲當 領域內的土砂被除去時點，就成爲漏水狀態，依據需要， 爲了確保自動熔接可能的狀態，可依據漏水位置或漏水狀 態，在例如鋼製壁的接頭部的外側或是接頭部內設置帶板 或是棒狀構件，或在鋼製壁暫設的鋼製壁的接面部或是最 接近位置的外側等設置半切的鋼管或是帶板即可。 -10- (7) 1269823 進一步，在沖設位置的附近有水道的情況等，依據需 要設置也這些的構件即可。所設置的鋼管或帶板或是棒狀 構件，因爲是藉由水壓或土壓往領域方向押壓，所以不只 減少漏水量也可使滲出量均等，可以確保可自動熔接的狀 態。 成爲熔接對象的接頭部是否可確實止水，只要在例如 自動熔接機安裝照像機，就可在熔接隨後馬上確認。 鋼製壁及暫設鋼製壁的分離量大，使土砂可從橫面侵 入的情況時，爲了防止而在鋼製·壁及暫設鋼製壁之間設置 任何的遮蔽構件也可以。 申請專利範圍第2項，如申請專利範圍第1項的鋼製 壁的製造方法，其中’在前述鋼製壁及前述暫設鋼製壁之 間’或是在前述鋼製壁及前述暫設鋼製壁的端部，設置防 止土砂進入前述領域內用的遮蔽構件，形成前述領域。 遮蔽構件是鋼材較佳，只要在鋼製壁及暫設鋼製壁之 間可沖設的話’無特別限定。且，遮蔽構件是與鋼板椿或 暫設鋼板樁結合也可以，不一定需要結合。 然而’本發明，雖是提供接頭部的遮水性能高的遮水 鋼製壁的製造方法’但是不只是製造時的遮水性，考慮鋼 材的腐蝕速度（淡水〇.2mm/年以下）等，來決定熔接部 的熔接長度即可。將熔接部的熔接長度形成鋼板樁的最小 厚度以上的話’可以充分確保鋼製壁本體以上的耐腐食 性。 且’彳At由鋼製壁及暫設鋼製壁挾持的領域藉由控削等 -11 - (8) 1269823 除去的土砂，是在接頭部的自動熔接終了後藉由埋回，可 以無需排土。此外，遮水鋼製壁設置位置是否被廢棄物污 染，可藉由挖削土的檢查，在工事開工隨後可以馬上確 認。 進一步，排土的埋回之後，將遮水鋼製壁的大氣中部 由傘形混凝土等覆蓋的話，可大大地降低遮水鋼製壁的腐 蝕量，而可以大幅延長供用年數。 申請專利範圍第3項，一種鋼製壁的製造方法，將在 兩端具有接頭的複數的鋼材彼此連結的鋼製壁的製造方 法，其特徵爲：將前述鋼材前述接頭彼此嵌合沖設，形成 在內側具有閉領域的雙層壁構造的鋼製壁，接著除去前述 閉領域內的土砂及/或是水分之後，將該鋼製壁的接頭部 自動熔接。 本發明，是適合海面或是水面廢棄物處分場等，主作 爲水底地盤等的水量多，需要遮水處的方法。 具有形成雙層壁構造的鋼製壁的接頭的鋼材，是如盒 型鋼板樁等，藉由內側及外側的接頭的嵌合在其間形成閉 領域。 且，對於盒型鋼板樁，如將直線型鋼板樁雙層配置地 設置分隔壁的直線鋼板樁型、Η形鋼板樁或Z形鋼板樁、 U型鋼板樁、或者是將橫剖面形狀在同一方向對齊的直線 狀結合可能並將非對稱U型鋼板樁在內外雙重配置者，或 者是組合這些及構成分隔壁的鋼板或是Η形鋼或Τ形鋼 等的形鋼而構成盒狀者等，只要可形成在內側具有閉領域 -12- (9) 1269823 的雙層壁構造的鋼製壁者的話，無特別限定。 形成雙層壁構造，或者是盒型的理由，是在雙層壁內 的自動熔接實施容易之外，在雙層壁內的從廢棄物處分場 等的水的漏出的檢查是可能的，即使萬〜漏出，對於再熔 接或雙層壁內的止水材的充塡也容易等，這些是成爲可追 隨施工進度的安全裝置。 雖因鋼板樁的型式而使雙層壁的形狀不同，但是在除 去形成雙層壁內的水等的時點，就可判定從鋼製壁的接頭 部及雙層壁底面的滲出水的狀態，藉由其可判斷是否可自 動熔接。 具體上，在水域施工鋼製壁的情況，藉由鋼材的沖設 形成雙層壁構造的鋼製壁，由設置於雙層壁內的泵等進行 排水，從接頭部或是雙層壁底面的水的滲入是很少的狀 態，例如附著水分及流入水分量可藉由熔接的電弧熱量蒸 發的程度，或者是其以下的量的話，可以進行自動熔接。 且，可由目視確認或是照像機等確認從熔接部的漏水，依 據需要可就地補修。 然而，本發明的閉領域，是水中等的話，可只由泵等 排水，但是在沼地等時，依據需要除去土砂，洗淨接頭部 的熔接處。 接頭部的洗淨，是爲了熔接可能，進一步確保熔接的 品質而進行者，水噴射或是空氣等的高壓噴射等是有效率 的。 . 接頭部的自動熔接，例如由磁鐵將自動熔接用的導引 -13- (10) 1269823 安裝於鋼板樁等，可以由通常的方法進行。 本發明中，可確保所需的板厚熔接部的長度的熔接速 度，在例如使用C02氣體作爲密封氣體的MAG熔接時 是10〜20cm/分前後，在等離子熔接中可以採用兩倍程 度，橫跨長時間幾乎同程度的品質的熔接，可由簡易的設 定達成。因此，與熔接工的熔接作業相比，可以均質且能 率佳地熔接，使用於鋼板樁的廢棄物處分場等時，熔接延 長愈長，愈可以降低熔接成本。 然而，有關接頭熔接部的性能，是使用具有預先濕潤 狀態的非對稱接頭的鋼板樁，變化熔接間隔及速度嘗試接 頭部的自動熔接，藉由將其熔接部切斷測量來檢討熔接板 厚及熔接部的結果，已確認即使接頭是濕潤狀態，也可藉 由自動熔接獲得充分的熔接板厚及熔接部。 成爲熔接對象的接頭部是否可確實止水，只要在例如 自動熔接機安裝照像機，就可在熔接隨後馬上確認。 進一步對於熔接，由熔接工的熔接時需要作業空間或 休息空間，且熔接本身是與下方向熔接相比困難的垂直方 向熔接（橫方向熔接）。在本發明中，藉由自動熔接的熔 接，與熔接工的作業相比，無需確保較大的作業領域，且 因爲是除去閉領域內的土砂及/或是水分進行熔接，而不 需要水中熔接用的特別的機器，就可以保持熔接品質的均 一性。 即，本發明是可滿足材料面的環境安全性，且成爲具 有沖設施工追跡型的安全裝置功能的遮水鋼製壁的製造方 -14- (11) 1269823 法。 然而，從接頭部的漏水多，直接自動熔接困難的情況 等，是例如，在接頭部的外側或是接頭嵌合部內，藉由在 塞住接頭彼此的間隙用的接頭長度方向設置連續的長條構 件，降低從接頭部的漏水，可使自動熔接容易。 具體上，長條構件是在成爲熔接的對象的接頭嵌合部 的間隙插入可進入的小徑的樹脂製的棒狀構件、管、或是 金屬圓棒等，或者是在接頭的外側設置薄板、融點的高樹 脂薄片等。 在該狀態下將鋼製雙層壁內的水由泵排水的話，藉由 內外的水壓差將長條構件密合於接頭部的間隙，可以獲得 止水效果。由此，漏水量減少而使自動熔接容易。 申請專利範圍第4項，如申請專利範圍第3項的鋼製 壁的製造方法，其中，藉由存在於前述閉領域內的遮水 層，除去上部的土砂及/或是水分，並自動熔接至水底面 下爲止。 例如，在海面廢棄物處分場的海底地盤中存在遮水層 的情況時，即使海中部分可遮水，海底地盤的粘土層等的 遮水層以上的層中，會有止水不充分的情況，該情況是藉 由除去遮水層上部的土砂等，且，可能的話除去遮水層的 一部分來自動熔接，即使對於海底部分也可以確保止水 性。 具體上由水噴射或挖削機等將遮水層爲止的地盤多挖 削一些，由抽砂泵等將土砂一起進行排水，如上述將對象 -15- (12) 1269823 接頭部由自動熔接遮水。 之後，再度，使下側成爲遮水層地埋回’雖不需要排 土處理，但是由抽砂泵等將已排水的水由浮舟上或暫設作 業空間上過濾分成細粒及粗粒，依據需要投入止水材後， 將這些依序由細粒、粗粒埋回鋼製雙層壁內，可可縮小從 鋼製雙層壁內底面的透水係數，更可獲得信賴性的高遮水 構造。 申請專利範圍第5項，一種鋼製壁，在兩端具有接頭 的複數的鋼材彼此是由前述接頭連結成的鋼製壁，其特徵 爲：接頭部是由鋼製的止水用形材覆蓋，前述止水用形材 及前述鋼材及/或是止水用形材彼此是在長度方向無間隙 地連續熔接。 本發明，是爲了獲得鋼製壁的接頭部的高遮水性，而 將鋼板樁等的鋼材的接頭部分由止水用形材覆蓋，並將鋼 材及止水用形材、或是止水用形材彼此、或者是其兩者在 長度方向無間隙地連續熔接。 這種接合，是藉由將熔接位置附近的土砂或水分去 除，確保熔接可能的空間，就可以由自動熔接機等進行。 申請專利範圍第6項，如申請專利範圍第5項的鋼製 壁’其中，前述止水用形材，是使覆蓋前述接頭地，卡合 或是熔接在前述鋼材的接頭附近。 覆蓋接頭部的止水用形材，是事先藉由熔接等安裝在 一方的鋼材也可以，在鋼材設置朝該鋼材的長度方向延伸 的卡止部，止水用形材是使用附唇緣的溝形鋼或是附唇緣 -16- (13) 1269823 的山形鋼等，將止水用形材端部的唇緣部分卡合於鋼材的 卡止部也可以。 安裝於鋼材的止水用形材及熔接有他方的鋼材者、安 裝於雙方的鋼材的止水用形材彼此相互熔接者、安裝於鋼 材的止水用形材及設置於他方的鋼材的卡止部相互熔接 者、止水用形材的唇緣部分或是凸緣部分及設置於雙方的 鋼材或是雙方的鋼材的卡止部是相互熔接者等，其任一的 鋼製壁，皆可充分達成本案發明的目的。 這種止水用形材，是上述附唇緣溝形鋼或附唇緣山形 鋼之外，可以覆蓋接頭部分，且只要可容易安裝在鋼製壁 的話，無特別限定剖面形狀等。 且，對於止水用形材的材質，只要具備與適度的強度 及熔接性的話，鋼以外也可以。 申請專利範圍第7項，如申請專利範圍第5或6項的 鋼製壁，其中，已連結的前述鋼材是沖入水中及/或是地 中。 申請專利範圍第8項，一種鋼製壁的製造方法，將在 兩端具有接頭的複數的鋼材彼此連結的鋼製壁的製造方 法，其特徵爲：前述鋼材是將前述接頭彼此嵌合沖設，形 成在內側具有閉領域的雙層壁構造的鋼製壁，將前述接頭 的前述閉領域側由鋼製的止水用形材覆蓋的狀態下，除去 存在於前述閉領域內的土砂及/或是水分，將覆蓋前述接 頭的止水用形材及前.述鋼材或是止水用形材彼此，藉由自 動熔接在長度方向無間隙地連續熔接。 -17- (14) 1269823 具有形成雙層壁構造的鋼製壁的接頭的鋼材 型鋼板樁等，藉由內側及外側的接頭的嵌合在其 領域。 且，對於盒型鋼板樁，如將直線型鋼板樁雙 設置分隔壁的直線鋼板樁型、Η形鋼板樁、或 樁、U型鋼板樁、或者是將橫剖面形狀在同一方 直線狀結合可能的非對稱U型鋼板樁形成內外 者、或者是組合這些及構成分隔壁的鋼板或是Η 形鋼等的形鋼而構成盒狀者等，形成在內側具有 雙層壁構造的鋼製壁，且只要是可在接頭附近安 形材的形狀的話，無特別限定。 申請專利範圍第9項，一種鋼製壁的製造方 兩端具有接頭的複數的鋼材彼此連結的鋼製壁 法，其特徵爲：前述鋼材是將前述接頭彼此嵌合 成鋼製壁，接著將前述鋼製壁的前述接頭附近的 至遮水層爲止而形成閉領域，將前述接頭的前述 由止水用形材覆蓋的狀態下，除去存在於前述閉 土砂及/或是水分，將覆蓋前述接頭的止水用形 鋼材或是止水用形材彼此，藉由自動熔接在長度 隙地連續熔接。 申請專利範圍第5〜7的鋼製壁，是不限定 利範圍第8的鋼製壁的製造方法的形成雙層壁構 壁的情況，在一重壁構造的鋼製壁的情況中，可 專利範圍第9項將鋼製壁的前述接頭附近的土砂 ，是有盒 間形成閉 層配置並 Ζ形鋼板 向對齊呈 雙層配置 形鋼或Τ 閉領域的 裝止水用 法，將在 的製造方 沖設而形 土砂挖削 閉領域側 領域內的 材及前述 方向無間 如申請專 造的鋼製 以如申請 控削至遮 -18- (15) 1269823 水層爲止而形成閉領域。 即’形成於鋼製壁的至少片側的閉領域可以利用作爲 自動熔接等用的空間。 然而’在申請專利範圍第8或9項的鋼製壁的製造方 法’是有關防止水滲入形成於雙層壁構造的內側或是鋼製 壁的片側的閉領域，依據需要，將滯溜於由止水用形材及 鋼材所包圍的領域的水分排出，或者是對於由止水用形材 及鋼材所包圍的領域進行充塡材的投入。 充塡了材，如灰漿材、灰泥材或高分子吸水材的可吸 收水分而固化的材料之外，也可活用瀝青、粘土、矽砂 等。 且，申請專利範圍第8或9項是在有關存在於鋼製壁 的製造方法的閉領域內的土砂或水分的除去，在水中等的 話可只由泵等排水’在沼地等中，依據需要除去土砂，將 覆蓋接頭部的止水用形材及鋼材的間隙洗淨。 土砂等的具體的除去方法，是有由水噴射或挖削機等 將至遮水層爲止的地盤多挖削一些，由抽砂栗等將土砂一 起進行排水的方法。 鋼板樁等的鋼材及覆蓋其接頭的止水用形材的熔接， 或者是止水用形材彼此的熔接，是可以進行由磁鐵將自動 熔接用導引安裝於例如鋼材等的通常的自動熔接的方法。 本發明中’可確保所需的板厚熔接部的長度的熔接速 度’在例如使用C 02氣體作爲密封氣體的M A G熔接時 是10〜20cm /分前後，在等離子熔接中可以採用兩倍程 -19- (16) 1269823 度’橫跨長時間幾乎同程度的品質的熔接，可由簡易的設 定達成。因此，與熔接工的熔接作業相比，可以均質且能 率佳地熔接’使用於鋼板樁的廢棄物處分場等時，熔接延 長愈長，愈可以降低熔接成本。 進一步對於熔接，由熔接工的熔接時需要作業空間或 休息空間，且熔接本身是與下方向熔接相比困難的垂直方 向熔接（橫方向熔接）。在本發明中，藉由自動熔接的熔 接，與熔接工的作業相比，無需確保較大的作業領域，且 因爲是除去閉領域內的土砂及/或是水分進行熔接，而不 需要水中熔接用的特別的機器，就可以保持熔接品質的均 —性。 申請專利範圍第1 〇項，如申請專利範圍第8或9項 的鋼製壁的製造方法，其中，將存在於前述閉領域內的土 砂及/或是水分，除去至遮水層的上部爲止。 例如，在海面廢棄物處分場的海底地盤中存在遮水層 的情況時’即使海中部分可遮水，海底地盤的粘土層等的 遮水層以上的層中，會有止水不充分的情況。 該情況是藉由除去遮水層上部的土砂等，且，可能的 話除去遮水層的一部分，將覆蓋接頭的止水用形材沖入至 遮水層爲止，之後，將充塡材投入由止水用形材及鋼材所 包圍的領域，或是，將滯溜於由止水用形材及前述鋼材所 包圍的領域的水分由泵等排出，防止水從該領域朝前述閉 領域滲入之後，除去存在於閉領域內的土砂及/或是水 分’在最後將位於大氣中的鋼材及止水用形材的接合部分 -20- (17) 1269823 或是止水用形材彼此由自動熔接的話，即使對於海底部分 也可以確保止水性。 申請專利範圍第1 1項，一種板樁式鋼製壁，使在兩 端具有接頭的複數的鋼板樁彼此，是由前述接頭連結成的 板捲式鋼製壁’其&徵爲·目丨j述鋼板捲，是在前述兩纟而的 接頭的附近具有與沖設法線同方向的扁平部，前述兩端的 接頭的橫剖面形狀是左右非對稱，相互卡合的前述接頭的 一方是對於前述扁平部向內形成，前述接頭的他方是對於 前述扁平部向外形成，進一步在前述接頭的至少一方的接 頭的基部具有突起，將該鋼板樁的橫剖面形狀在同一方向 對齊的狀態下，可將複數的鋼板樁彼此呈直線狀連結，前 述一方的接頭的前述突起及另一方的接頭的外側面是在長 度方向無間隙地連續熔接。 具有非對稱接頭的鋼板樁，如直線型、U型（在網及 其兩側具有凸緣的形狀等）的任一也可以。 且，前述一方的接頭的突起及與另一方的接頭的外側 面之間的熔接的種類，可利用 TIG、MIG、MAG、離子電 弧等的氣體密封電弧熔接，熔接材料或密封氣體的種類等 不問。 藉由設置於接頭的基部的突起，使鋼板樁的接頭部的 旋轉被拘束。 申請專利範圍第1 2項，一種板樁式鋼製壁，在兩端 具有接頭的複數的鋼板樁彼此是由前述接頭連結成的板樁 式鋼製壁，其特徵爲：前述鋼板樁，是在前述兩端的接頭 -21 - (18) 1269823 的附近具有與沖設法線同方向的扁平部，前述兩端的接頭 的橫剖面形狀是左右非對稱，相互卡合的前述接頭的一方 是對於前述扁平部向內形成，前述接頭的他方是對於前述 扁平部向外形成，在前述內方向的接頭側的基部具有向內 的突起，進一步在前述向外的接頭側的基部具有向內的立 起部，將該鋼板樁的橫剖面形狀在同一方向對齊的狀態 下，可將複數的鋼板樁彼此呈直線狀連結，前述向外的接 頭的外側面及前述向內的突起是在長度方向無間隙地連續 熔接。 即，申請專利範圍第1 2項，是相當於如申請專利範 圍第1 1項的板樁式鋼製壁，在一方的接頭的向內的接頭 側的基部具有前述突起，在他方的接頭的向外的接頭側的 基部具有向內的立起部的情況。 申請專利範圍第1 3項，如申請專利範圍第1 1或1 2 項的板樁式鋼製壁，其中，複數的鋼板樁是由前述兩端的 接頭連結成的2個板樁壁彼此，是使各板樁壁的前述接頭 的連結部彼此相互向內對峙的狀態下，沖入水中及/或是 地中。 由習知技術所述的各技術的共通的其他的問題，是需 要與鋼板樁別體的間隔保持用突起狀體、特殊形狀的接頭 構件、遮水構件或是拘束構件的製作及安裝，因爲需要提 高遮水性用的遮水密封材或具有膨脹性的遮水材、或者是 灰漿材等’而會提高供實現遮水用的成本（遮水構件、遮 水材等的製造成本或現場施工成本）。 -22· (19) 1269823 進一步，有因外力是作用在遮水密封材、具有膨潤性 的遮水材或是灰漿材的經年劣化或板樁壁時的剥離所起因 的遮水性能的下降的問題。 本申請人，爲了解決這種課題，而發明具有上述非對 稱接頭的鋼板樁的接頭形狀的特徵，施加接頭連結部的熔 接。 而且，如後述，對於左右非對稱的接頭的連結部，將 向外接頭的外側面及向內的突起之間在鋼板樁的長度方向 連續熔接的情況、及對於向外的接頭側的基部將向內突出 的立起部及向內接頭的外側面之間在鋼板樁的長度方向連 續熔接的情況的兩者相比較，前者的熔接較安定，比較容 易使熔接焊道無間隙地形成，而發現此部分的遮水性。 然而，將如TI G或等離子電弧熔接的非消耗電極型的 熔接法適用於向外接頭的外側面及向內的突起的熔接的情 況’是不使用熔接材料地熔融突起並熔接於外側面，將突 起及外側面一起熔融成一體化也可以。 申請專.利範圍第1 4項，一種鋼板樁，在兩端具有接 頭的鋼板樁，其特徵爲：在前述兩端的接頭的附近具有與 沖設法線同方向的扁平部，前述兩端的接頭的橫剖面形狀 是左右非對稱，相互卡合的前述接頭的一方是對於前述扁 平部向內形成，前述接頭的他方是對於前述扁平部向外形 成，在前述接頭的至少一方的接頭的基部具有突起，將該 鋼板樁的橫剖面形狀.在同一方向對齊的狀態下，複數的鋼 板樁彼此是可直線狀連結，且，前述突起的一部分或是全 -23- (20) 1269823 部是由比其他的部分低融點的材料所構成。 鋼板樁的整體形狀，如直線型、U型（在網及其兩側 具有凸緣的形狀等）的任一也可以。 構成突起的一部分或是全部的低融點材料，如比鋼材 低融點的熔接材料（充塡金屬）或附蠟焊條（黃銅焊條或 銀焊條）是最佳。 藉由設置於接頭的基部的突起，使鋼板樁的接頭部的 旋轉被拘束。 申請專利範圍第1 5項，一種鋼板樁，在兩端是具有 接頭的鋼板樁，其特徵爲：在前述兩端的接頭的附近具有 與沖設法線同方向的扁平部，前述兩端的接頭的橫剖面形 狀是左右非對稱，相互卡合的前述接頭的一方是對於前述 扁平部向內形成，前述接頭的他方是對於前述扁平部向外 形成，在前述向內的接頭側的基部具有向內的突起’在前 述向外的接頭側的基部具有向內的立起部’將該鋼板樁的 橫剖面形狀在同一方向對齊的狀態下’複數的鋼板樁彼此 是可直線狀連結，且，前述突起的一部分或是全部是由比 其他的部分低融點的材料所構成。 即，申請專利範圍第1 5項，是相當如申請專利範圍 第1 4項的鋼板樁，在一方的接頭的向內的接頭側的基部 具有向內的突起，在他方的接頭的向外的接頭側的基部具 有向內的立起部的情況。 將申請專利範圍第1 4或1 5項的鋼板樁彼此，由前述 接頭部連結，加熱前述突起，使接頭部的外側面及前述突 -24· (21) 1269823 起在長度方向連續無間隙地接合，使板樁式鋼製壁具有高 遮水性。 將這種接合部的形成時的前述突起加熱的手段，是氣 體密封電弧熔接的話，TIG、等離子電弧等的非消耗電極 型是最佳，密封氣體的種類不問。例如，在水中的接合的 話，使用等離子電弧熔接的電弧加熱接合部位的方法是適 合的，在大氣中接合的話，藉由噴火器的加熱，將充塡金 屬或蠟熔融的方法也可以。 本申請人，是與申請專利範圍第1 1〜1 3項的情況同 樣，對於左右非對稱的接頭的嵌合部，將向外接頭的外側 面及向內的突起在鋼板樁的長度方向連續無間隙接合爲目 的，將向內的突起的幾乎整體形成比鋼板樁的其他的部分 低融點的材料的情況、及將向內的突起形成與鋼板樁的其 他的部分同一材料的情況的兩者相比較。 然而’此時，加熱手段是使用非消耗電極型的氣體密 封電弧熔接之一的等離子電弧熔接裝置，採用在大氣中描 準向內的突起進行加熱的方法。 對於前者’在母材開始熔融之前，使形成向內的突起 的低融點材料是熔出，並在向外接頭的外側面及向內的突 起之間比較容易讓低融點材料熔融的接合材料呈無間隙、 具有遮水性地形成。 (發明之效果） 依據本發明，藉由具有接頭的鋼材彼此的連接來製造 -25- (22) 1269823 鋼製板樁的情況，形成接頭部的自動熔接可能的空間’且 不會損失施工性，可以獲得有效率且便宜的高遮水性。 特別是，如申請專利範圍第1、2項的鋼製壁的製造 方法中，藉由使用暫設鋼板樁形成鋼製板樁壁的接頭部的 自動熔接可能的空間，就可以有效率且便宜地進行均質的 熔接，對於已完成的鋼製壁，可期待遮水壁的高信賴性。 且，申請專利範圍第3、4項的鋼製壁的製造方法， 是利用雙層壁構造的鋼製壁的內部閉空間，進行接頭部的 自動熔接，可以有效率且便宜地進行均質的熔接，對於已 完成的鋼製壁，可期待遮水壁的高信賴性。 且，藉由檢查熔接後的漏水，依據需要可以當場進行 再熔接，且對於在廢棄處理場等所流出的有害物質的可在 雙層壁內進行水質檢查，萬一漏水的情況中可將止水材充 塡了於雙層壁內來應付等，而具有安全裝置功能。 申請專利範圍第5〜1 0項的鋼製壁，是不限定於藉由 在兩端具有接頭的鋼材彼此的連接而形成的雙層壁構造的 鋼製壁的內部閉領域、或者是雙層壁構造，利用在鋼製壁 的接頭部附近所確保的閉空間，將覆蓋接頭的止水用形材 及鋼材及/或是止水用形材彼此，藉由自動熔接等在長度 方向無間隙地連續熔接，對於鋼材彼此的接頭的連接不會 給與障礙，可將鋼製壁有效率且便宜地製造，且對於已完 成的鋼製壁，可以確保遮水壁的高信賴性。 申請專利範圍第1 1〜1 3項的板樁式鋼製壁，是因爲 可將已被連結、沖入的鋼板樁的接頭部無間隙地熔接，所 -26- (23) 1269823 以可以完全防止地下水或海水從鋼板捲彼此的接頭部分侵 入。且，因爲不需要膨潤性遮水材或遮水構件等’所以製 作成本及施工成本便宜，藉由與鋼板樁及H形鋼等的其 他的鋼材組合，就可以實現具有各式各樣的剖面性能的鋼 製壁。 依據申請專利範圍第1 4、1 5項的鋼板樁’因爲已被 連結、施工的鋼板樁的接頭部無接合時的問題’所以可無 間隙地安定接合。 【實施方式】 第1圖是本案的申請專利範圍第1項，其具有接頭的 鋼材及暫設鋼材，是將使用鋼板樁的情況的施工程序的一 ‘ 例以流程圖顯示，由以下的程序進行作業。 依據鋼板樁沖設機器的施工能力、使用台數’從完成 遮水鋼製壁的任一部位開始鋼製壁的構築（第1圖a )。 至少在1處，沖設暫設鋼板樁（第1圖b )，形成由 φ 鋼製壁的一部分及暫設的鋼板樁所包圍的領域（第1圖 c ) 〇 將閉領域內的土砂挖削除去（.第1圖d )後，洗淨領 域內的鋼製壁的接頭部（第1圖e )。 接著，將自動熔接機組裝於領域內（第1圖f )，進 行自動熔接（第1圖g )。 確認可確實止水後，拔去暫設板椿（第1圖h )。 藉由返覆上述的a〜h，完成遮水鋼製壁。 -27- (24) 1269823 然而，在h的暫設鋼板樁的拔去之前，沖設下一暫設 鋼板樁，進行b〜g也可以，該情況，先沖設的暫設鋼板 樁的拔去是可在任一時點進行，進行例如先進行的熔接部 的止水的確實性的確認後，再拔去也可以。 第2圖是顯不構成鋼製壁A的鋼材，是使用U型鋼 板樁11的情況的一實施例，鋼製壁A是藉由將交互逆向 配置的U型鋼板樁1 1的兩端的接頭彼此連接而形成。 在此鋼製壁A的片側，在此例中配置由同樣的ϋ型 鋼板樁暫設鋼板樁1 11構成的暫設鋼製壁D，形成挾持鋼 製壁A及暫設鋼製壁D的閉領域B。 且，爲了在此例中形成1個閉領域B，而使用3枚的 暫設鋼板樁1 11，此閉領域B的鋼製壁A的熔接對象接頭 部J是有2處。 然而，將暫設鋼板樁1 11以5枚連設的話’可以同時 形成2個閉領域B，那些的閉領域B內的熔接對象接頭部 J是成爲4處。進一步將暫設鋼板樁1 11以7枚連設的 話，同時形成有3個閉領域B，其時的熔接對象接頭部J 是成爲6處。依據這些是施工條件或鋼材的形狀、施工機 器、施工程序等，可以適宜決定。 第3圖顯示構成鋼製壁A的鋼材，其兩端的接頭部J 的接頭形狀是左右非對稱’可將橫剖面形狀在同一方向對 齊呈直線狀結合、及在兩端的接頭部J的附近具有與沖設 法線同方向的扁平部，使用相互卡合的鉤狀的接頭的一方 是對於鋼製壁A的最外緣向內，他方是向外形成的非對 -28- (25) 1269823 稱U型鋼板樁1的情況的一實施例。然而，上述的非對稱 U型鋼板樁1的接頭形狀，是在其他的實施例的說明中詳 述。 此情況，如圖所示，即使暫設鋼板樁11也使用的話 非對稱U型鋼板樁的話，由1個非對稱U型鋼板樁就可以 形成1個閉領域B。當然，將暫設鋼板樁11的非對稱U 型鋼板樁複數連接，同時形成複數的閉鎖領域B也可以。 且，使用這種非對稱U型鋼板樁的情況，與具有同程 度的剖面剛性的U型鋼板樁相比較，由可以將橫剖面形狀 在同一方向對齊呈直線狀結合的非對稱接頭的特性、可讓 遮水鋼製壁A的厚度抑制較小。 因此，適用於例如廢棄物處分場時，即使施工可能的 空間有限，廢棄物處分場的有效體積成爲最大成爲的鋼製 壁A的製造是可能的。 進一步，在鋼製壁A或暫設鋼製壁D使用非對稱u 型鋼板樁的話，如第3圖所示，可以將熔接對象的接頭部 J配置於離暫設鋼板樁11最遠的位置，且全部的熔接個所 因爲成爲相同方向，所以有自動熔接容易等的優點。 弟4圖是顯7K構成鋼製壁A的鋼材’是使用讓供提 高鋼製壁A的剛性用的連結鋼材1 c的Η形鋼與非對稱υ 型鋼板樁1 一體化的情況的一實施例。 在此例中，暫設鋼板樁11是使用非對稱U型鋼板 樁，藉由2枚的暫設鋼板樁11形成暫設鋼製壁0。此情 況，形成大的閉領域B，挖削除去閉領域B的土砂之後， -29- (26) 1269823 可從內側將鋼製壁A的接頭部】自動熔接。 取代非對稱U型鋼板樁1形成通常的U型鋼板樁或是 直線型鋼板樁，且取代連結鋼材1 c的Η形鋼而使用T形 的其他的鋼材的情況也同樣。且，只要可獲得自動熔接機 可熔接的領域的話，取代暫設鋼板樁11，可以使用任意的 形態的暫設鋼板樁。 第5圖是顯示構成鋼製壁A的鋼材，是使用直線型 鋼板樁2 1，且在暫設鋼製壁D之間設置帶鋼板、Η形鋼 或Τ形鋼的遮蔽構件2 1 s (或是2 1 s’、2 1 s”）的情況的實 施例（對應於申請專利範圍第2項）。 由直線型鋼板樁2 1形成鋼製壁A的情況，與U型鋼 板樁或非對稱U型鋼板樁相比，就這樣地將與鋼製壁 a 及暫設鋼製壁D的分離距離增大因爲困難，所以希望如 第5圖由遮蔽構件2 1 s (或是2 1 s ’、2 1 s ”）閉塞閉領域B 的橫面，確保自動熔接用的最低限的止水性，或者是防止 土砂往挖削部分流入。 如第2圖或第3圖，與鋼製壁A及暫設鋼製壁D的 距離不固定的情況時，是藉由在例如自動熔接接頭存在的 領域的旁邊的領域設置作爲遮蔽構件的鋼板或形鋼等，可 以防止土砂流入被挖削的部分。 如第5圖會因土壓遮蔽構件21s (或是21s，、21s”） 而倒下的態樣的情況，是進行深植或設置隔片即可。且， 如前述’遮敝構件21s (或是21s，、21s")是不一定要與 鋼製壁A或暫設鋼製壁D接觸也可以。 -30- (27) 1269823 第6圖是本案的申請專利範圍第3項，具有接頭的鋼 材，是使用盒型鋼板樁，將適用於海水域的情況的施工程 序的一例以流程圖顯示，由以下的程序進行作業（河川、 湖沼等的情況也同樣）。 依據鋼板樁沖設機器的施工能力、使用台數，從已完 成的遮水鋼製壁的任一部位開始盒型鋼板樁的雙層壁構造 的鋼製壁（鋼板樁雙層壁）的構築（第6圖a)。 接著，藉由此盒型鋼板樁分隔的雙層壁的各閉領域， 是由泵等將內部的海水排水（第6圖b )。 確認朝閉領域的漏水少，就可將盒型鋼板椿彼此的接 頭部由自動熔接機進行熔接（第6圖c )。 以上，是本製造方法的基本程序。然而，從鋼板樁接 頭部或是鋼板樁雙層壁的底面地盤的漏水量多的情況，是 如前述進行在接頭部的外側或是接頭嵌合部內，設置塞住 接頭彼此的間隙用的長條構件等的漏水流入的對策。 且，海底地盤的土層結構，即藉由成爲砂層或遮水層 的粘土層的位置、厚度、性狀，進行鋼板樁雙層壁的底面 土砂的挖削除去（第6圖d )，洗淨接頭部之後（第6圖 e ) ’組裝自動熔接機（第6圖f)，基本程序的第6圖b 的排水後，進行自動熔接的（第6圖g)。 第7圖是顯示構成本案發明的鋼製壁的鋼材，是使用 將直線型鋼板樁雙層配置的盒型鋼板樁3 1的情況的一實 施例。 第7圖所示的盒型鋼板樁3 1是將平行的2本的凸緣 -31 - (28) 1269823 部3 1 f由網部3 1 w連繫的略Η形剖面的鋼材，各凸緣部 3 1 f是具有在兩端相互具有嵌合接頭3 2、3 3的直線型鋼 板樁的形態。 對於相鄰接的盒型鋼板樁3 1，藉由將平行的2本的 凸緣部3 1 f的兩端的接頭3 2、3 3嵌合並依序連接進行， 在內側漸漸地形成具有閉空間B的2重壁構造的鋼製壁 A。 在水域的施工，通常，閉空間B是由幾乎被水塞滿， 其下部是成爲深植在水底地盤的土砂的狀態。 在該狀態下，由泵等將閉空間B的內側的水排水，利 用閉空間B將接頭3 2、3 3的嵌合的接頭部J從內側由自 動熔接機熔接，藉由此熔接確保接頭部J的止水性。 水從水底面側滲出的情況中，對於水底面的預定深度 爲止藉由水噴射或是控削機等除去土砂，進行其部分的接 頭部J的自動熔接之後，進行深植部分的土砂的埋回。 然而，如前述，有關接頭部J的熔接，是附著水分及 流入的水分量是可由熔接的電弧熱量蒸發的程度，或者是 其以下的量的話，可以進行自動熔接，漏水是成爲問題的 情況時，是進行接頭部J的再熔接，或有需要實施其他的 漏水對策。 第1 1圖〜第1 3圖，是分別顯示那樣的漏水對策的一 例。然而，接頭部分的符號，是使用第7圖的符號（接頭 3 2、3 3 )，而後述第9圖、第1 〇圖等的實施例的情況也 同樣。 -32- (29) 1269823 第1 1圖’是在由接頭32、33的嵌合所形成的接頭部 J的外側（鋼製壁A是從外部受到比內側高的水壓或是土 壓側），由具有可撓性的薄片狀的合成樹脂所構成，設置 在接頭部的長度方向連續長條（長帶）構件s 1的情況。 雙層壁的內側的水及/或是土砂排出的話，雙層壁的 外側的水壓或是土壓因爲比內側高，所以長條構件s 1是 被吸入接頭3 2、3 3間的間隙的形式與接頭部j密合，在 其部分中’可以完全遮斷水從雙層壁的外側朝內側流動。 第12圖、第1 3圖不是接頭部J的外側，而是在相互 嵌合的接頭3 2、3 3的嵌合部內，嵌入樹脂製的棒狀構 件、管、或是金屬圓棒等的長條構件s2的情況。 長條構件s2 ’當嵌入時插入比其徑大的間隙，在該 狀態下，雙層壁的內側的水及/或是土砂排出的話，雙層 壁的外側的水壓或是土壓因爲比內側高，所以長條構件 s2是朝向雙層壁的內側被吸入的形式，與接頭3 2、3 3的 間隙的寬小的部分密合，在其部分可以遮斷水從雙層壁的 外側朝內側流動。 然而，長條構件s 1、s 2，採用具有可撓性的材料，或 者是彈性的愈大材料，其密合度會.增加，更可接近完全遮 水’只要是不影響自動熔接的程度，些微的漏水是被容 許。 第8圖是顯不構成本案發明的鋼製壁的鋼材，是使用 將非對稱U型鋼板樁雙層配置的盒型鋼板樁的情況的一實 施例。 -33- (30) 1269823 第8圖所示的盒型鋼板樁3 1 ’，其兩端的接頭3 2、3 3 的形狀是左右非對稱，形成將橫剖面形狀在同一方向對齊 呈直線狀結合可能，在兩端的接頭部]的附近具有與沖設 法線同方向的扁平部，在相互卡合的鉤狀的接頭3 2、3 3 的一方是向內，他方是向外形成的兩端，將具有接頭 3 2、3 3的非對稱U型鋼板樁呈2枚背面貼合配置，由熔 接一體化的形態。 對於相鄰接的盒型鋼板樁3 Γ，藉由一邊嵌合兩端的 接頭3 2、3 3 —邊依序連接，就可漸漸形成在內側具有閉 空間B的2重壁構造的鋼製壁A。 閉空間B內的土砂及或是水的排出或自動熔接、漏水 對策，是與第7圖的實施例的情況同樣。 第9圖是顯示構成本案發明的鋼製壁的鋼材，是使用 將非對稱U型鋼板樁配置於雙層的盒型鋼板樁3 1”的情況 的其他的實施例。 第8圖的盒型鋼板樁3 Γ，是將非對稱U型鋼板樁配 置成2枚背面貼合，由熔接一體化者，然而，第9圖的盒 型鋼板樁3 1”是配置於2枚背面贴合的非對稱U型鋼板樁 間，藉由熔接Η形鋼作爲連結鋼材3 1 c而一體化，來提高 剖面剛性。 即，藉由將非對稱U型鋼板樁彼此連結的鋼材的長度 增大來提高剖面剛性，連結鋼材3 1 c是藉由使用Η形鋼來 提高扭轉剛性，可減小熔接變形的發生，使製作成爲容 易。 -34- (31) 1269823 且’第7圖〜第9圖的實施例，是將複數的盒型鋼板 樁預先在陸上熔接形成元件，再將那些沖設連接也可以。 第1 〇圖是顯示構成本案發明的鋼製壁的鋼材，是使 用通常的U型鋼板樁1 1的情況的一實施例，在此例中鋼 材本身雖非盒型，但是藉由將U型鋼板樁1 1所形成的鋼 製壁雙層配置成雙層壁構造，就可在內側形成閉領域B。 此情況，也因接頭部J的數舉變多，爲了提高施工 性，是預先將複數的U型鋼板椿1 1在陸上熔接後，再進 行沖設事。 第1 4圖是在接頭附近具有扁平部的鋼材，使用如第 1 5圖所示的盒型鋼板樁3丨，適用於海水域的情況的施工 程序的一例以流程圖顯示，由以下的程序進行作業（河 川、湖沼等的情況也同樣）。 (1 ) 依據鋼板樁沖設機器的施工能力、使用台 數’從鋼製壁A的任一部位，開始盒型鋼板樁1的雙層 壁構造的鋼製壁 A (鋼板樁雙層壁）的構築（第1 4圖 a )。 海底地盤的土層結構，即藉由砂層或粘土層的位置、 厚度、性狀，會在遮水層上部的雙層壁內堆積遮水性的差 土砂等’進行鋼板樁雙層壁內的底面土砂的挖削，將該部 分的土砂或水排出（第14圖af )。然而，此時，對於雙 層壁內閉領域B的水是朝完全不需要排除。 (2 ) 接著，覆蓋由（1 ) 沖設的盒型鋼板樁3 1的 接頭部J ’將止水用形材5 1的附唇緣溝形鋼的唇緣部分 -35- (32) 1269823 5 1 r，與設置於鋼板樁3 1的接頭3 2、3 3附近的扁平部3 4 的卡止部3 1 r卡合，並插入上述雙層壁內。需要的話，沖 設至海底的土中（第14圖b) 。 (3 ) 之後，爲了防止滯溜於由止水用形材5 1及鋼 板樁3 1包圍的接頭止水領域C的水會侵入上述雙層壁內 的閉領域B，而在接頭止水領域C內將滯溜的水由泵等不 停地排出（第14圖c )。 或者是，防止水從雙層壁外部朝內部通過接頭部J侵 入爲目的，在由被卡合的止水甩形材51及盒型鋼板樁31 所包圍的接頭止水領域C，投入灰泥等的充塡材（第14 圖c’） 而且，藉由充塡材的投入，確認沒有從接頭止水領域 C往雙層壁內的閉領域B的水的滲入。具體上，確認雙層 壁內閉領域B的水位的變化即可。 (4 )之後，對於藉由盒型鋼板樁3 1分隔的雙層壁內 的各閉領域B，由泵等將內部的海水（依據狀況，土砂也 可以）排水（第1 4圖d ))。然而，（在3 ) 的過程 的情況中，與（4 ) 的過程並行實施也可以。 (5 ) 確認無從外部侵入雙層壁內各閉領域B的 水，將止水用形材5 1的附唇緣溝形鋼及盒型鋼板樁3 1之 間的間隙藉由自動熔接機熔接（第1 4圖e )。第1 5圖 (b ) 中，符號7是顯示其熔接部。 本發明，是對於要求鋼板樁等的鋼材的接頭部的止水 的部分，藉由進行在長度方向無間隙地連續熔接使鋼製壁 -36- (33) 1269823 的完全遮水成爲可能，特別是使用在接頭部附近具有扁平 部的鋼材的情況，是由其形狀所產生的優點也大。 第15圖，是構成鋼製壁A的鋼材，使用盒型鋼板樁 3 1的情況。第1 5圖所示的盒型鋼板樁3 1，是將平行的2 本的凸緣部3 1 f由網部3 1 w連繫的略Η形剖面的鋼材， 各凸緣部31f是具有在兩端具有相互嵌合的接頭32、33 的直線型鋼板樁的形態。 對於相鄰接的盒型鋼板樁3 1，一邊嵌合平行的2本 的凸緣部3 1 f的兩端的接頭3 2、3 3 —邊依序連接，就可 漸漸形成在內側具有閉空間B的雙層壁構造的鋼製壁a。 在水域的施工，通常，閉空間B是由幾乎被水塞滿， 其下部是成爲深植在水底地盤的土砂的狀態。 之後，如圖示將止水用形材5 1的附唇緣溝形鋼的兩 端的唇緣部分5 1 r與設在鋼板樁3 1的凸緣部3 1 f的扁平 部3 4的卡止部3 1 r卡合，橫跨接頭3 2、3 3地卡合。 之後，由泵等將閉空間B的內側的水排水，利用閉空 間B將止水用鋼材5 1及鋼板樁3 1之間的間隙藉由自動熔 接機熔接，藉由此熔接實現完全的遮水性。 然而，水從水底面側漏出的情況中，從水底面至預定 深度爲止將土砂藉由水噴射或是挖削機等除去，進行沖入 土中的止水用鋼材5 1及鋼板樁3 1的自動熔接之後，進行 深植部分的土砂的埋回。 第1 6圖，是顯示構成鋼製壁的鋼材，使用將非對稱 U型鋼板樁雙層配置的盒型鋼板樁3 Γ的情況的一實施 -37- (34) 1269823 例。 第1 6圖所示的盒型鋼板樁3 1 ’，其兩端的接頭3 2、 3 3的形狀是左右非對稱，將橫剖面形狀形成可在同一方 向對齊地直線狀結合可能，在兩端的接頭部】的附近具有 與沖設法線同方向成爲的扁平部3 4，在相互卡合的鉤狀 的接頭3 2、3 3的一方是向內形成，他方是向外形成的兩 端將具有接頭3 2、3 3的非對稱U型鋼板樁配置成2枚背 向貼合，由熔接一體化的形態。 對於相鄰接的盒型鋼板樁3 Γ，一邊將兩端的接頭 3 2、3 3嵌合一邊依序連接，漸漸形成在內側具有閉空間b 的雙層壁構造的鋼製壁A。 閉空間B內的土砂及/或是水的排出或自動熔接方 法，是與第1 5圖的實施例的情況同樣。 第1 7圖是顯示構成鋼製壁a的鋼材，使用將非對稱 U型鋼板樁雙層配置的盒型鋼板椿3 1”的情況的其他的實 施例。 第1 6圖的盒型鋼板樁3 Γ，雖是將非對稱U型鋼板樁 配置成2枚背向貼合，由熔接一體化，但第1 7圖的盒型 鋼板樁3 1”是在配置於2枚背向貼合的非對稱U型鋼板.樁 間熔接作爲連結鋼材3 1 c的Η形鋼而一體化，來提高剖面 剛性。 即，藉由增大連結非對稱U型鋼板樁彼此的鋼材的長 度來提高剖面剛性，連結鋼材3 1 c是藉由使用Η形鋼提高 扭轉剛性，熔接變形的發生可減小，使製作成爲容易。 -38 - (35) 1269823 第1 8圖是顯示構成本發明的鋼製壁A的鋼材，使用 將直線型鋼板樁雙層配置的盒型鋼板樁4 1的情況的其他 的實施例，在此例中，雙層配置的兩爪型的直線型鋼板樁 及連結這些的厚板狀的連結鋼材4 1 c是由熔接一體化。 第1 9圖是顯示構成鋼製壁A的鋼材，使用在Η形剖 面的鋼材的凸緣部兩端具有設有開縫的管狀的母接頭及嵌 合於其的公接頭的盒形鋼板樁4 1 ’的情況的實施例。 同樣，第20圖是顯示構成鋼製壁Α的鋼材，組合在 配置成2枚背向貼合的U型鋼板樁間熔接連結鋼材4 1 c 一 體化的鋼板樁4 1 ”、及通常的U型鋼板樁1 1 ”的接頭彼此 的情況的實施例。 然而，上述第15圖〜第20圖的實施例，是將複數的 盒型鋼板樁預先在陸上熔接形成元件，再將那些沖設連接 也可以。 第2 1圖是在接頭部附近具有扁平部的鋼材，將使用 如第22圖所示的非對稱U型鋼板樁1，適用於陸上的情 況的施工程序的一例以流程圖顯示，由以下的程序進行作 業。 (1 ) 依據鋼板樁沖設機器的施工能力、使用台 數，從鋼製壁A的任一部位，開始鋼板樁1的鋼製壁A (一重壁）的構築（第21圖a)。此時，一般是沖設至 使鋼板樁1的下端到達遮水層爲止。 (2 ) 將上述鋼製壁A的接頭部：T附近控削至遮水 層爲止，藉由排出土砂或水確保閉領域B的閉空間。此閉 -39- (36) 1269823 領域B的規模，只要是可確保止水用形材5 1的嵌入及之 後的熔接作業的空間的大小（水平面積X垂直深度）的話 即可。然而，此時，對於閉領域B內的水是不需要完全排 除。 (3 )接著，覆蓋由（1 ) 沖設鋼板樁1的接頭2、 3，將止水用形材5 1的附唇緣溝形鋼與設置於該鋼板樁1 的接頭2、3附近的扁平部4的卡止部1 r卡合，插入上述 閉領域B內（第21圖c )。需要的話，沖設至土中。 (4 )之後，爲了防止滯溜於由上述止水用形材5 1及 鋼板樁1所包圍的接頭止水領域C的水侵入上述閉領域B 內，而將滯溜於接頭止水領域C內的水由泵等不停地排出 (第2 1圖d )。 或者是，爲了防止水從上述閉領域B外部透過接頭部 J侵入，將灰泥等的充塡材投入由止水用形材5 1及鋼板 樁1所包圍的接頭止水領域C (第2 1圖d’）。 而且，藉由充塡材的投入，確認無水從接頭止水領域 C朝上閉領域B內滲入。具體上，確認閉領域B內的水位 的變化即可。 (5 )之後，在設在鋼板樁1的接頭部J附近的各閉 領域B，由泵等將內部的水（依據狀況也含土砂）排水 (第2 1圖e )。然而，在（4 )的過程的情況中’將 (5 ) 的過程並行實施也可以。 (6 )確認無水從外部朝上述閉領域B侵入’將前述 止水用形材5 1及鋼板樁1的間隙由自動熔接機熔接（第 -40- (37) 1269823 2 1圖f)。第2 3 ( a ) 〜（d ) 圖的符號7是顯示其熔 接部。 弟2 3圖’是顯不構成鋼製壁A的覆蓋鋼材的接頭部 的止水用形材5 1的形狀例，第2 3圖（a ) 是一般地的附 唇緣溝形鋼的情況，第2 3圖（c ) 是具有向外的唇緣部 分5 1 r’的附唇緣溝形鋼的情況，第2 3圖（b ) 是附唇緣 溝形鋼的網部分是成爲山形的特殊形狀的附唇緣形材的情 況。 此外，雖無圖示可採用圓形或半圓形的形材。 第23圖（d) ，是止水用形材，在相互連結的鋼材 的接頭2、3的附近，事先分別熔接山形鋼5 1 ’、5 1”，藉 由鋼材的沖設使山形鋼5 Γ、5 1 ”的先端部疊合，在內側形 成接頭止水領域C的情況。 此情況，在閉領域B，將止水用形材作爲的山形鋼 5 P ' 5 1 ”的先端部重疊的部分在長度方向無間隙地連續熔 接，就可完全地遮水。然而，在山形鋼5 1 ’、5 1”的重疊部 分中’依據需要，另外，也有介設止水密封材的情況。止 水密封材，是可以使用例如止水橡膠或水膨脹性的樹脂塗 料等。 第24圖，是顯示的非對稱U型鋼板樁1的其他的例 的鋼材，其特徵爲左右的接頭2、3’皆具有由內爪（向內 的突起2a )及外爪（向外的突起3c )構成的雙層式的 爪。 然而，圖中的突起2a、3c (內爪及外爪）的高度， -41 - (38) 1269823 若非可以拘束旋轉，且使接頭2、3 話’不拘於所圖示的高度，也可形成更 且，對於接頭2、3 ’的扁平部4纪 示的向內的接頭2 b的最下端及向外的 只要對於接頭2、3,的嵌合不阻礙的位丨 第2 5圖，是顯示申請專利範圍第 的一實施例，將具有非對稱接頭2、3 樁1呈1列連結後，熔接接頭嵌合部， 在此例中，在非對稱U型鋼板樁1 白勺基部形成將接頭部的旋轉拘束用的| 向外的接頭3側的基部形成向內突出的 卡合向內的接頭2及向外的接頭] 樁1，將向外的接頭3側的外側面3b 的突起2 a在長度方向連續無間隙地烧 A具有高遮水性。 鋼製壁A的施工方法，是在水中 樁1以1枚1枚地與接頭2、3嵌合# 2、3的方法也可以，將複數的鋼板樁 結並熔接一體化者準備複數枚，嵌合g 中及/或是地中之後，熔接該接頭2、3 此鋼製壁 A，具有如第26圖所 2、3 (第2 6圖（a ) 是顯示將複數的 連結的狀態的平面圖，第26圖（b) 大圖）的鋼板樁1的接頭形狀的特徵 彼此的脫離容易的 低。 J位置，即使非如圖 接頭2 a的最上端， 置即可。 1 1、1 2項的鋼製壁 的非對稱U型鋼板 形成鋼製壁A。 的向內的接頭2側 向內的突起 2a，在 立起部3 a。 ί並連結複數的鋼板 及向內的接頭2側 ί接，就可使鋼製壁 及/或是地中將鋼板 tv入後，熔接該接頭 1預先由接頭部連 妻頭.2、3並沖入水 的方法也可以。 示的非對稱的接頭 ί鋼板樁1由接頭部 是接頭嵌合部的擴 ，本申請人，是對於 -42- (39) 1269823 如第2 6圖所示的左右非對稱的接頭2、3的嵌合部，將在 如第2 7圖所示將向外接頭3的外側面3b及向內的突起 2 a之間在鋼板椿1的長度方向連續的熔接情況、及在如 第2 8圖所示在向外的接頭3側的基部向內突出的立起部 3 a及向內接頭2的外側面2b之間在鋼板樁1的長度方向 連續熔接的情況的兩者相比較，可獲得以下知識。 前者的熔接安定，如第2 7 ( a ) 圖所示在向外接頭3 的外側面3 a及向內的突起2 a之間，無間隙的熔接焊道是 比較容易形成，可獲得此部分的遮水性。 一方面，後者的熔接不安定，如第2 8圖（b ) 、第 2 8圖（c ) 所示在向外的接頭3側的基部向內突出的立 起部3 a，或者是在向內接頭2的外側面2b的任一，熔接 電弧是呈偏離的狀態下被熔接，在上述任一形成隆起的熔 接焊道5a、5b。 因此，在鋼板樁1的長度方向連續熔接的情況中，將 熔接速度與前者相比，若不下降夠低的話，在向外的接頭 3側的基部在向內與突出立起部3 a及向內接頭2的外側 面2b之間，將熔接焊道無間隙，且具有遮水性地形成是 困難的。且，與前者相比，熔接.焊道形狀是成爲比較大地 突出外表面的形狀。 此現象的原因，是因爲在前者的情況中，由向外接頭 3的外側面3b及向內的突起2a形成的開先角度是在第27 圖（a ) 的銳角（90 °未滿），在後者的情況中，在向外 的接頭3側的基部在向內突出的立起部3 a及由向內接頭 -43- (40) 1269823 2的外側面2b形成的開先角度是如第2 8 ( a ) 圖的鈍角 (比90°大）。 然而，將TIG或等離子電弧熔接的非消耗電極型的熔 接法適用於向外接頭3的外側面3b及向內的突起2a的溶 接的情況，是不使用熔接材料地熔融突起2a並熔接於外 側面3 b，將突起2 a及外側面3 b —起熔融一體化也可以 (無圖示）。 第29圖，是顯示申請專利範圍第1 1項的鋼製壁A 的其他的實施例，與第2 5圖的實施例的情況同樣，將具 有非對稱接頭2、3的非對稱U型鋼板椿1呈1列連結 後，熔接接頭嵌合部，形成鋼製壁A。 與第25圖的實施例的不同處，在第29圖的實施例 中，向外的接頭3側也在與立起部3 a之間，形成供拘束 接頭部的旋轉用的向外的突起3 c，在卡合這種接頭2、3 的狀態下’將向外的接頭3側的外側面3 b及向內的接頭 2側的突起2 a在長度方向連續無間隙地熔接。 此情況的熔接處，除圖示處以外，在向外的突起3 c 及向內的突起2的外側面2b之間也可以。 且，第25圖、第29圖的實施例的任一的情況，突起 2a或是突起3 c也是可以拘束接頭部的旋轉，且接頭2、3 彼此不是朝容易脫離的話，例如比圖示者低者也可以。 進一步，對於接頭2、3的扁平部4的位置，不是如 圖示的向內的接頭2的最下端及向外的接頭3的最上端， 只要對於接頭2、3的嵌合不阻礙的位置的話，無特別限 -44- (41) 1269823 定。 第3 0圖（a ) 、 ( b )，是顯示申請專利範圍第1 3 項的鋼製壁的一實施例，這些是將具有非對稱接頭2 ' 3 的非對稱U型鋼板樁1呈2列連結後，將非對稱U型鋼板 樁1彼此對於板樁壁的最外緣相互在向內方向對峙的狀態 下，熔接各接頭嵌合部，形成鋼製壁 Α。第3 0圖（a ) 是使2列的板樁壁相互接近，第3 0圖（b ) 是使2列的 板樁壁相互分離。 鋼製壁的施工方法，一般是將各列個別沖入於水中及 /或是地中，可能的話將2列的鋼製壁在相互分離的狀態 下同時沖入也可以。 此情況的特徵，是在呈2列沖入水中及/或是地中的 對峙鋼製壁因爲形成與外界隔離的閉空間，所以藉由將沖 入地中的部分挖削，排除接頭嵌合部及其周邊部的土砂’ 之後的接頭嵌合部的熔接施工可變得容易。 且，遮水處理後，上述閉空間因爲是與外界遮斷’所 以可活用於接頭熔接部的監視或補修的用途。 第3 1圖（a ) 、( b )，是顯示申請專利範圍第1 3 項的鋼製壁A的其他的實施例，這些是將具有非對稱接 頭3 2、3 3的2枚的非對稱U型鋼板樁彼此對於板樁壁的 最外緣相互向內方向對峙的狀態下，直接熔接或是透過鋼 板或Η形鋼等的鋼材熔接一體化者呈1列連結後，熔接 接頭嵌合部而形成遮水性優秀的鋼製壁Α。第31圖（a ) 是將2枚的非對稱u型鋼板樁彼此直接熔接一體化的盒型 -45- (42) 1269823 鋼板樁3 1，的情況，第3 1圖（b ) 是透過連結鋼材3 1 c 的Η形鋼熔接一體化的盒型鋼板樁3 i，，的情況。 此情況的特徵，因爲鋼板樁的水中及/或是地中的沖 A是2枚同時進行，所以施工（沖設）能率提高之外，沖 入水中及/或是地中後的鋼板樁1彼此的間隔因爲可以保 持固定’所以適合如第34圖所示的移動熔接機的導入， 而可達成接頭嵌合部的熔接施工的效率化。 且’與第3 0圖的實施例的情況同樣，因爲形成有與 外界隔離的閉空間，所以藉由將沖入地中的部分挖削，排 除接頭嵌合部及其周邊部的土砂，就可使之後的接頭嵌合 部的熔接施工容易。 且’遮水處理後，上述閉空間因是與外界遮斷，所以 可活用於接頭熔接部的監視或補修的用途。 第3 2圖，是顯示申請專利範圍第1 3的鋼製壁A的 其他的實施例，將具有凸緣部3 1 f的非對稱接頭的2枚的 直線型鋼板樁彼此對於板樁壁的最外緣朝相互在向內方向 對峙的形式，將透過網部3 1 w的鋼板熔接一體化的盒型 鋼板樁3 1呈1列連結後，熔接接頭嵌合部，形成鋼製壁 A 〇 此情況，也與第3 1圖的實施例同樣，朝鋼板樁的水 中及/或是地中的沖入因爲是實質上2枚同時進行，所以 施工（沖設）能率提高之外，因爲可以將水中及/或是地 中沖入後的鋼板樁彼此的間隔保持固定，所.以適合如第 34圖所示的如的移動熔接機的導入，而可達成接頭嵌合 -46 - (43) 1269823 部的熔接施工的效率化。 且，因爲形成有與外界隔離的閉空間，將沖入地中的 部分挖削’藉由排除接頭欲合部及其周邊部的土砂，就可 使之後的接頭嵌合部的熔接施工成爲容易。 且，遮水處理後，因爲上述閉空間是與外界遮斷，所 以可活用於接頭熔接部的監視或補修的用途。 然而，以上的實施例的熔接施工方法，如第3 3圖或 第34圖所示，是在鋼板樁的長度方向連續由預定的熔接 速度使預定位置的熔接可能的移動式的熔接機8、9，最 好是使用自動熔接機械手臂，對於施工能率方面較有效 率，但是由手動介入的熔接也可以。 然而，第33圖中，符號8a是熔接吹管，8b是行走 用軌道，8 c是行走用滾子，第3 4圖中，符號9 a是熔接 吹管，9b是熔接機間間隔調整用導電弓，9c是定位兼行 走用滾子。 且，對於使用例示於第3 3圖或第3 4圖的移動式熔接 機的接頭嵌合部的熔接，爲了排除嵌入嵌合部的土砂等的 異物，希望在熔接之前具有可進彳了利用水或是空氣等淸掃 熔接位置的功能。 第3 5圖，是顯示申請專利範圍第1 4項、申請專利範 圍第1 5項的鋼板樁的一實施例，將具有非對稱接頭2、3 的非對稱U型鋼板樁1呈1列連結後，熔接接頭嵌合部， 形成鋼製壁A。 在此例中，在非對稱U型鋼板樁1的向內的接頭2側 -47- (44) 1269823 的基部形成向內的突起2a，在向外的接頭3側的基部形 成向內突出的立起部3a。 向內的突起2a的一部分或是全部是由比其他的部分 低融點的材料5 c所構成，卡合向內的接頭2及向外的接 頭3並連結複數的鋼板樁1，藉由將向外的接頭3側的外 側面3b及向內的接頭2側的突起2a之間在長度方向連續 無間隙地熔接，使鋼製壁A具有高遮水性。 鋼製壁A的施工方法，是在水中及/或是地中將鋼板 樁1的接頭2、3以1枚1枚地施工後，接合該接頭2、3 的方法也可以，準備將複數的鋼板樁1預先由接頭部連結 以及接合一體化者複數枚，一邊嵌合接頭2、3 —邊施工 至水中及/或是地中之後，接合該接頭2、3的方法也可 以。 此申請專利範圍第1 4項，申請專利範圍第1 5項的鋼 板樁，也具有如第2 6圖所示的非對稱的接頭2、3的鋼板 樁1的接頭形狀特徵，本申請人，是在如第2 6圖所示的 左右非對稱的接頭2、3的嵌合部，爲了將向外接頭3的 外側面3b及向內的突起2a在鋼板樁1的長度方向連續無 間隙地接合，而將向內的突起2a的幾乎整體由比鋼板樁 1的其他的部分低融點的材料5 c形成的情況（第3 5圖 (b))、及與向內的突起2a鋼板樁1的其他的部分同 一材料的情況（第3 8圖（a ))的兩者相比較，可獲得 以下知識。 然而，此時，加熱手段是使用非消耗電極型的氣體密 -48- (45) 1269823 封電弧熔接之一的等離子電弧熔接裝置，採用在大氣中對 準向內的突起2 a進行加熱的方法。 前者（第3 5圖）是在母材開始熔融之前使接合材料 (低融點材料5 c )熔出，在向外接頭3的外側面3 b及向 內的突起2 a之間比較容易使接合材料無間隙地被充塡， 而具有遮水性。 一方面，後者（第38圖），向內的突起2a及母材是 同一的材料（鋼材），因爲突起的融點高，所以依據與加 熱用的電弧的方向或突起2a的距離會使該突起2a的熔融 狀況變化，如第3 8圖（b )，依據接合部長度方向的位 置會發生接合不良的部位（在向外接頭3的外側面3 b及 向內的突起2 a之間形成水可侵入的程度的間隙）。 或者是，依據電弧的方向、突起 2a的距離或入熱 量，雖無圖示，但是會發生將切削向內突起2 a的根部分 或向外接頭3部分削落的問題。 因此，在鋼板樁1的長度方向連續接合的情況中，需 要將電弧的位置·角度正確地保持，將入熱量適切地調整 之外，接合速度不降至比前者（第35圖）低相當程度的 話，無法回避上述接合時的問題，將向外接頭3的外側面 3 b及向內的突起2 a具有遮水性地無間隙的接合非常困 難。 以上，雖是依據大氣中的接頭接合實驗的結果作說 明，但是與大氣中相比’在水中的話，因爲熔融構件會被 周圍的水吸熱而容易固化’爲了熔融接合材料的突起，必 -49- (46) 1269823 需增大加熱用電弧的入熱量。 以突起的一部分或是全部不使用低融點材料的方式， 在水中接合接頭的情況時，容易發生如已述在鋼板樁的凸 緣開孔，或將接頭部分削落的問題，本案發明的鋼板樁是 在水中接合的情況最佳。 第3 6圖，是顯示其他的實施例，只有將向內的突起 2a的一部分由低融點材料5 c形成的情況的向外的接頭3 的外側面3 b及向內的突起2a的接合前後的狀態。 在第36圖的實施例中，對於向內的突起2a，雖只有 將與向外的接頭3對峙側由低融點材料5c形成，但是將 例如向內的突起2 a的上部的數分之一由低融點材料5 c形 成也可能。 然而，如第3 6 ( a ) 圖所示的將低融點材料5 c向內 的突起2a 一體化的方法，是接合劑的方法，或於鋼板樁 1的熱間壓延終了後的適當的母材溫度時，將低融點材料 5c在預定的位置澆鑄成預定的形狀，之後冷卻硬化的方 法等。 第37圖，是顯示將向內的突起2a的一部分置換成低 融點材料5 c的其他的方法，預先準備將低融點材料5 c (熱熔融材料）成形成向內的突起2a的一部分或是全部 的形狀者，母材的鋼板樁也成形成使上述向內的突起2a 可例如呈藥盒構造嵌合，將兩者嵌合一體化的情況。在嵌 合面’預先塗抹接合劑，或者是將兩者嵌合後，由螺栓 (無圖示）等固定也可以。 -50- (47) 1269823 第3 9圖，是顯示本案的申請專利範圍第1 4項的鋼板 樁的其他的實施例，與第3 5圖的實施例的情況同樣，將 具有非對稱接頭2、3的非對稱U型鋼板樁1，呈1列連結 後，熔接接頭嵌合部，形成鋼製壁A。 與第35圖的實施例不同，在第39圖的實施例中，向 外的接頭3側也在與立起部3 a之間，形成有向外的突起 3 c ’在卡合這種接頭2、3的狀態下，將向外的接頭3側 的外側面3b及向內的接頭2側的突起2a之間在長度方向 連續無間隙地熔接。 此情況的熔接處，圖示處以外，在向外的突起3 c及 向內的突起2的外側面2 b之間也可以，該情況，向外的 突起3 c的一部分或是全部是由比其他的部分低融點的材 料5 c所構成。 且，第3 9圖的實施例，也是與對於第3 5圖的實施例 的第3 6圖、第3 7圖同樣的變形形態，即對於向外的突起 3 c，只有將與向內的接頭3對峙側由低融點材料形成，或 者是將向外的突起3c的圖中下部的數分之一由低融點材 料形成，或預先準備將低融點材料成形成向外的突起3 e 的一部分或是全部的形狀者，母材.的鋼板樁也可以成形成 使上述向外的突起3c是由例如藥盒構造嵌合，將兩者嵌 合一體化的變形形態。 且，第3 5圖、第3 9圖的實施例的任一的情況，突起 2a或是突起3c也是可以拘束接頭部的旋轉，且只要接頭 2、3彼此不是容易脫離即可，例如比圖示低者也可以。 -51 - (48) 1269823 進一步，對於接頭2、3的扁平部4的位置，不只是 如圖示的向內的接頭2的最下端及向外的接頭3的最上 端，對於接頭2、3的嵌合不阻礙的位置的話，無特別限 定。 第40圖的一實施例，是將具有非對稱接頭2、3的非 對稱U型鋼板樁1呈2列連結後，將非對稱U型鋼板樁1 彼此對於板樁壁的最外緣相互向內方向對峙的狀態下，將 各接頭嵌合部接合，形成鋼製壁A。第40圖（a ) 是使 2列的板樁壁是相互接近，第40圖（b ) 是使2列的板 樁壁相互分離。 鋼製壁的施工方法，一般是將各列在各別設置於水中 及/或是地中，是可能的話將2列的鋼製壁在相互分離的 狀態下同時施工也可以。 此情況的特徵，因爲是在呈2列設置於水中及/或是 地中的相面向的鋼製壁形成與外界隔離的閉空間，藉由將 設置於地中的部分挖削，排除接頭嵌合部及其周邊部的土 砂，就可使之後的接頭嵌合部的接合施工容易。 且，遮水處理後，因爲上述閉空間是與外界是遮斷， 所以可以活用於接頭接合部的監視或補修的用途。 第4 1圖（a ) 、( b) ，是顯示其他的實施例，這 些是將具有非對稱接頭2、3的2枚的非對稱U型鋼板椿 彼此對於各板樁壁的最外緣相互在向內方向對峙的狀態 下，透過直接熔接或是鋼板或Η形鋼等的鋼.材熔接一體 化的盒型鋼板樁呈1列連結後，接頭嵌合部將接合形成具 -52- (49) 1269823 有優秀的遮水性的鋼製壁A。第41圖（a ) 是將2枚的 非對稱U型鋼板樁彼此直接熔接一體化的盒型鋼板樁3 1 ’ 的情況，第4 1圖（b ) 是將透過連結鋼材3 1 c的Η形鋼 熔接一體化的盒型鋼板樁3 1 ”的情況。 此情況的特徵，朝鋼板樁的水中及/或是地中的施工 因爲是實質上2枚同時進行，所以施工（沖設）能率提高 之外，水中及/或是地中設置後的鋼板樁彼此之間隔因爲 可以保持固定，適合如第43圖所示的移動接合機8’的導 入，可達成接頭嵌合部的接合施工的效率化。 且，與第40圖的實施例的情況同樣，因爲形成有與 外界隔離的閉空間，所以藉由將施工於地中的部分挖削， 排除接頭嵌合部及其周邊部的土砂，就可使之後的接頭嵌 合部的接合施工成爲容易。 且，遮水處理後，因爲上述閉空間是與外界是遮斷， 所以可以活用於接頭接合部的監視或補修的用途。 第42圖，是顯示其他的實施例，將具有凸緣部31f 的非對稱接頭的2枚的直線型鋼板樁彼此對於將板樁壁的 最外緣相互在向內方向對峙的形式，透過網部3 1 w的鋼 板熔接一體化的盒型鋼板樁3 1呈1列連結之後，接合接 頭嵌合部，形成鋼製壁A。 此情況，與第4 1圖的實施例的情況同樣，朝鋼板樁 的水中及/或是地中的施工因爲是實質上2枚同時進行， 所以施工（沖設）能率提高之外，水中及/或是地中設置 後的鋼板樁彼此之間隔因爲可以保持固定，適合如第43 -53- (50) 1269823 圖所示的移動接合機8 ’的導入，可達成接頭嵌合部的接合 施工的效率化。 且，因爲形成有與外界隔離的閉空間，所以藉由將施 工於地中的部分挖削，排除接頭嵌合部及其周邊部的土 砂，就可使之後的接頭嵌合部的接合施工成爲容易。 且，遮水處理後，因爲上述閉空間是與外界是遮斷， 所以可以活用於接頭接合部的監視或補修的用途。 然而，以上的實施例的熔接施工方法，如第43圖或 第44圖所示，是在鋼板樁的長度方向連續由預定的熔接 速度使預定位置的熔接可能的移動式的熔接機8 ’、9 ’，最 好是使用自動熔接機械手臂，對於施工能率方面較有效 率，但是由手動介入的熔接也可以。 且，對於使用例示於第43圖或第44圖的移動式熔接 機的接頭嵌合部的熔接，爲了排除嵌入嵌合部的土砂等的 異物，希望在熔接之前具有可進行利用水或是空氣等淸掃 熔接位置的功能。 【圖式簡單說明】 [第1圖]將具有接頭的鋼材及暫設鋼材使用鋼板樁的 情況時的本案發明（對應於申請專利範圍第1項）的施工 程序的一例以流程圖顯示的圖。 [第2圖]在申請專利範圍第1項中，構成鋼製壁的鋼 材是使用U型鋼板樁的情況時的一實施例的平面圖。 [第3圖]在申請專利範圍第1項中，構成鋼製壁的鋼 -54- (51) 1269823 材是使用非對稱U型鋼板樁的情況時的一實施例的平面 圖。 [第4圖]在申請專利範圍第1項中，構成鋼製壁的鋼 材是使用將Η形鋼與非對稱U型鋼板樁一體化的鋼材的 情況時的一實施例的平面圖。 [第5圖]構成鋼製壁的鋼材是使用直線型鋼板樁，倂 用遮蔽構件的情況（對應於申請專利範圍第2項）時的實 施例的平面圖。 [第6圖]將具有接頭的鋼材是使用盒型鋼板樁，適用 於海水域的情況時的本案發明（對應於申請專利範圍第3 項）的施工程序的一例以流程圖顯不的圖。 [第7圖]在申請專利範圍第3項中，構成鋼製壁的鋼 材，是使用將直線型鋼板樁雙層配置的盒型鋼板樁的情況 時的一實施例的平面圖。 [第8圖]在申請專利範圍第3項中，構成鋼製壁的鋼 材，是使用將非對稱U型鋼板樁雙層配置的盒型鋼板椿的 情況的一實施例的平面圖。 [第9圖]在申請專利範圍第3項中，構成鋼製壁的鋼 材，是使用將非對稱U型鋼板樁雙層配置的盒型鋼板樁的 情況時的其他的實施例的平面圖。 [第1 〇圖]在申請專利範圍第3項中，構成鋼製壁的 鋼材，是將U型鋼板樁雙層配置的情況時的一實施例的平 面圖。 [第1 1圖]將薄片狀的長條構件設置成接頭部外側來 -55- (52) 1269823 提高止水性的情況的一實施例的平面圖。 [第1 2圖]將棒狀的長條構件設置成接頭部內側來提 高止水性的情況的一實施例的平面圖。 [第1 3圖]將棒狀的長條構件設置成接頭部內側來提 高止水性的情況的其他實施例的平面圖。 [第1 4圖]本案的申請專利範圍第8、1 〇項的鋼製壁 的製造方法的槪要的流程圖。 [第1 5圖]本案的申請專利範圍第5〜7項的鋼製壁的 一實施例，（a ) 是平面圖，（b ) 是其要部的詳細的 擴大剖面圖。 [第1 6圖]本案的申請專利範圍第5〜7項的鋼製壁的 其他的實施例的平面圖。 [第1 7圖]本案的申請專利範圍第5〜7項的鋼製壁的 其他的實施例的平面圖。 [第1 8圖]本案的申請專利範圍第5〜7項的鋼製壁的 其他的實施例的平面圖。 [第1 9圖]本案的申請專利範圍第5〜7項的鋼製壁的 其他的實施例的平面圖。 [第2 0圖]本案的申請專利範圍第5〜7項的鋼製壁.的 其他的實施例的平面圖。 [第2 1圖]本案的申請專利範圍第9、1 〇項的鋼製壁 的製造方法的槪要的流程圖。 [第2 2圖]本案的申請專利範圍第9項的鋼製壁的製 造方法的一實施例的鋼製壁本體及閉領域的位置關係的平 -56- 1269823 (54) [第3 0圖]申請專利範圍第1 3項的板樁式鋼製壁的一 實施例，（a ) 是2列的板樁壁是相互接近的情況， (b ) 是2列的板樁壁是相互分離的情況。 [第3 1圖]申請專利範圍第1 3項的板樁式鋼製壁的其 他的實施例的平面圖，（a ) 是將2枚的U型鋼板樁彼此 直接熔接一體化的情況，（b ) 是透過Η形鋼熔接一體 化的情況。 [第3 2圖]申請專利範圍第1 3項的板樁式鋼製壁的其 他的實施例的平面圖。 [第33圖]使用移動式熔接機的接頭嵌合部的熔接方 法的一例的平面圖。 [第34圖]使用移動式熔接機的接頭嵌合部的熔接方 法的其他的例的平面圖。 [第3 5圖]本案的申請專利範圍第1 4、1 5項的鋼板樁 的一實施例，（a ) 是將具有非對稱接頭的鋼板樁連結的 狀態的平面圖，（b ) 、（ c ) 是接合的樣子的要部擴大 圖。 [第36圖](a) 、（ b) 是申請專利範圍第14、15 項的關鋼板樁的其他的實施例的接合的樣子的要部的平面 圖。 [第37圖](a) 、 （b) 是將內方向的突起的一部 分置換成低融點材料的方法的一例的說明圖。 [第3 8圖](a ) 、（ b ) 是比較例的有問題的接合狀 況的說明圖。 -58- (55) 1269823 [第3 9圖]本案的申請專利範圍第1 4、1 5項的鋼板樁 的其他的實施例，（a ) 是將具有非對稱接頭的鋼板樁連 結的狀態的平面圖，（b ) 、( c ) 是顯示接合的樣子的 要部擴大圖。 [第40圖]申請專利範圍第1 4、1 5項的鋼板樁的鋼製 壁的一實施例的平面圖，（a ) 是2列的板樁壁是相互接 近的情況，（b ) 是2列的板樁壁是相互分離的情況。 [第4 1圖]申請專利範圍第1 4、1 5項的鋼板樁的鋼製 壁的其他的實施例的平面圖，（a) 是將2枚的非對稱U 型鋼板樁彼此直接由熔接一體化情況，（b ) 是透過Η 形鋼熔接一體化的情況。 [第42圖]申請專利範圍第14、15項的鋼板樁的鋼製 壁的其他的實施例的平面圖。 [第43圖]使用移動式接合機的接頭嵌合部的接合方 法的一例的平面圖。 [第44圖]使用移動式接合機的接頭嵌合部的接合方 法的其他的例的平面圖。 [第45圖]使用習知例的U型鋼板樁的止水壁的例的 水平剖面圖。 [第46圖]顯示使用習知例的鋼管板樁的止水壁的例 的平面圖。 【圖號說明】 Α鋼製壁 -59- (56) (56)1269823 B閉領域 C接頭止水領域 D暫設鋼製壁 J熔接對象接頭部 j接頭部（暫設鋼板樁的接頭部） si薄片狀的長條構件 S2棒狀的長條構件 1非對稱U型鋼板樁 Γ非對稱U型鋼板樁 1 c連結鋼材 1 r卡止部1269823 (1) Description of the Invention [Technical Fields of the Invention] The present invention is a steel wall that is suitable for a waste disposal site, a building's underground wall, a road retaining wall, and the like, and a method for producing the same . [Prior Art] It is used for the construction of the underground structure or the harbor and the waters. The reason for this is that the high-rigidity wall produced by the high-quality material of the steel material can be constructed in a relatively short construction period, and the water repellency is excellent. Of course, the steel itself of the steel sheet pile body does not pass through at all, but in the fitting portion, the gap portion of the joint portion passes through the water, so the gap of the joint portion deeply affects the water repellency of the steel sheet pile. In general, the subsequent joint portion is flushed, and the water is relatively easy to pass. However, as the water flows, the water repellency of the joint inside the joint is gradually increased, but the joint of the soil particles and the like is gradually increased. It is necessary to reduce the gap inside the joint in order to prevent the internal gap from being blocked or to improve the water repellency. However, if this gap is reduced, the punching resistance of the joint portion will be increased. The water repellency and the workability are the opposite performance requirements, and the gap of the joint portion cannot be narrowed or increased. How to improve the water repellency of the joint portion is One of the topics. For example, in the case of a steel wall used for a water-repellent method such as a conventional waste disposal site, a predetermined amount of swellable water stop--5- (2) 1269823 material is applied to the joint portion before the steel sheet pile is punched. After the flushing, the water blocking material is used to cover the water by the seawater. Further, Japanese Laid-Open Patent Publication No. 2001-62692 5 (Patent Document 1) "Water-stopping wall" is a combination of the joints 62 of the steel sheet piles 6 1 of the plurality of U-shaped steel sheet piles 6 1 as shown in Fig. 45. The water blocking wall structure 63 has a plurality of water blocking wall structures 63 which are connected to the ground while the joints 64 of the side edges thereof are fitted to each other, and the water stopping wall structures 63 adjacent to each other. A ground improvement 65 is applied around the joints 64 of each other. In addition, in Japanese Laid-Open Patent Publication No. 07-3 243 2 9 (Patent Document 2), "the method of constructing the water stop wall by the column of the steel pipe column" is disclosed as a steel pipe sheet pile 7 as shown in Fig. 46. In one of the pair of wing portions 74 and 75, one of the pair of wing portions 74 and 75 is provided with an outwardly extending leg portion 75a, and the steel pipe sheet pile 71 is a plurality of male connectors. The material 72 and the female joint material 73 are fitted to each other to form a steel pipe sheet pile wall, and then the ground side of the sheet side of the construction side is cut out to expose the joint portion, and the tip end of the leg portion 75a of the female joint member 73 is placed on the other side. The outer side surface of the steel pipe body of the steel pipe sheet pile 7 1 is fixed by watertight fixing by means of welding 76. Other conventional techniques, such as Japanese Patent Laid-Open Publication No. Hei. No. 2000- 1 92446, Japanese Patent Laid-Open Publication No. 2000-19245, Japanese Patent Publication No. 2000-073361, Japanese Patent The invention disclosed in Japanese Laid-Open Patent Publication No. 2000-234330, Japanese Patent Laid-Open Publication No. Hei. No. Hei. (3) 1269823 [Problems to be Solved by the Invention] The construction of a steel wall such as a steel sheet pile is a method of using a swellable water-stopping material, and the environmental safety of the swellable water-stopping material itself. In the case of the durability, and when the period from the application or the installation of the steel sheet pile to the steel sheet pile is long, the water stop material is swollen by rain, condensation, moisture, etc., and the steel sheet pile is rushed. It is labor-intensive and time-consuming, and when the steel sheet pile is flushed, the water-repellent material will be peeled off, and carbonization due to heat, etc., and it is necessary to confirm the water-stopping property of the formed water-blocking wall. In this case, it is necessary to check whether the water flows out of the outside of the water-blocking wall from the side of the waste site, for example, where the water is insufficient, and in order to ensure the water-stopping property, it is necessary to improve the site around the leaking portion, and the wages and construction period will increase. The sense of uneasiness that cannot be removed by division. In the case of a U-shaped steel sheet pile or the like, the water stop material is a vertical axis of the cross section of the continuous steel wall. Therefore, the external force of the wave generates a shearing force in the water stop material during construction, which may result in the water stop material. damaged. Further, in the invention disclosed in Japanese Laid-Open Patent Publication No. 2001-62692 (Patent Document 1), it is necessary to match the weight of the integrated water-stop wall structure 63, and it is also necessary to carry out: water stop The water stop of the ground improvement 65 in the vicinity of the joint 64 of the wall structure 63 is ensured, and the environmental safety of the material used for the ground improvement 65 is ensured. In the invention disclosed in Japanese Laid-Open Patent Publication No. 07-3 243 29 (Patent Document 2), the welding is used for the joint portion because it is the water stop of the building (4) 1269823, that is, the groundwater as the ground. Since the water stoppage is different for the waste disposal site, the degree of water-stopping is only required to match the degree of drainage provided on the side of the normal construction object, and the water absorbing property is intended to be higher than the intention of the present invention. And the function of the safety device is different. Further, in the invention disclosed in Japanese Laid-Open Patent Publication No. 07-3 243 2 9 (Patent Document 2), since the female joint member 73 having a special shape is used, the female joint member 73 is deformed during the punching, and the cutting is performed. It is suspected that the groundwater in the construction site is in a wet state or the vertical state of the exposed joint portion in the water state. Also, an automatic fusion machine cannot be used in these methods. The present invention has an object of solving the above-described problems of the prior art, and provides a space in which automatic welding of a joint portion can be formed, and a high-water-shielding steel wall can be efficiently and inexpensively obtained without losing workability. And its manufacturing method. (Means for Solving the Problem) The first aspect of the invention is a method for producing a steel wall, and a method for producing a steel wall in which a plurality of steel materials having joints at both ends are connected to each other is characterized in that The steel material is formed by fitting the joints to each other to form a part or all of the steel wall, and the temporary steel material is flushed on the sheet side of the steel wall to form a temporary steel wall, and the steel is removed. The wall and the soil sand in the field in which the steel wall is temporarily held are washed by the joint portion of the steel wall, and the joint portion is automatically welded. A steel material having a joint for forming a steel wall, such as a net and a U-shaped steel sheet pile having a flange on both sides of the -8 - (5) 1269823, a straight steel sheet pile, a steel sheet pile, a combination of these and a steel shape Etc., there is no particular limitation. The temporary steel material, such as the above-mentioned U-shaped steel sheet pile, linear steel sheet pile, steel tube sheet pile, and the like, is not particularly limited, and the steel material constituting the steel wall body and the temporary steel material may be in different forms. The purpose of using temporary steel is to form a space that can be automatically welded. This temporary steel can be reused during construction or after construction. Further, the temporary steel wall formed by temporarily setting the steel material is not limited to the formation of a plurality of temporary steel materials, and may be formed by a single temporary steel material. The cleaning of the joint portion is performed by welding, and further, in order to ensure the quality of the welding, high-pressure injection of water or air or the like is effective. The automatic welding of the joint portion is carried out by, for example, a guide for automatic welding by a magnet to a steel sheet pile or the like, and can be carried out by a usual method. In the present invention, the welding speed of the length of the required thickness of the welded portion can be ensured, for example, 10 to 20 cm/min in the case of MAG welding using C〇2 gas as the sealing gas, and twice as much as in the plasma welding. The welding of quality of almost the same degree across a long period of time can be achieved by simple setting. Therefore, compared with the welding work of the welder, the welding can be performed homogeneously and efficiently, and when it is used in the waste of the steel sheet pile, the longer the welding is, the lower the welding cost can be. In the place other than the joint portion of the steel wall, the steel wall and the temporary steel wall are preferably in contact with each other, and the size of the automatic fusion splicer, the size of the steel splicer of the joint of the steel sheet pile, etc. You can keep these away as needed. -9 - (6) 1269823 However, regarding the performance of the joint welded portion, a steel sheet pile having an asymmetric joint having a pre-wet state is used, and the welding interval and the speed are attempted to automatically weld the joint portion, and the welded portion is cut off. As a result of measuring the thickness of the welded plate and the welded portion, it was confirmed that a sufficient welded thickness and a welded portion can be obtained by automatic welding even if the joint is wet. According to the present invention, in order to meet the environmental safety of the material surface, and the working space or the rest space required for the welding of the welder, the welding itself is a vertical welding (transverse welding) in which the welding in the lower direction is difficult, and the welding is automatically welded. It has been confirmed that the welding of the steel joint portion is possible even in the wet state, and it can be applied to the workmanship. That is, as in the case where the joint portion of the present invention which surrounds the object to be welded is formed of a steel material and the soil sand in the field is controlled and removed, the groundwater is from the joint portion or the steel wall and the temporary steel wall. If the degree of exudation is caused by the joint (not in direct contact, the soil and sand can be removed), it is possible to prevent water from being welded by the joint portion, and even if the corrosion of the welded portion is considered, it is possible to manufacture a cover which can maintain the water stopping performance. Water steel wall. In addition, the shape or the form of the steel material forming the steel wall is different depending on the plane width of the steel wall or the position of the joint portion to be welded, and the number of temporary steel materials required, but these are different. In the field of formation, when the soil sand in the field is removed, it becomes a water leakage state. According to the need, in order to ensure the possible state of automatic welding, depending on the water leakage position or the water leakage state, for example, outside the joint portion of the steel wall or A strip plate or a rod-shaped member may be provided in the joint portion, or a half-cut steel pipe or a strip plate may be provided on the joint surface of the steel wall temporarily provided on the steel wall or the outer side of the closest position. -10- (7) 1269823 Further, in the case where there is a waterway in the vicinity of the flushing position, it is sufficient to provide these components as needed. Since the steel pipe or the strip plate or the rod-shaped member is pressed by the water pressure or the earth pressure in the direction of the field, the amount of leakage can be equalized not only by reducing the amount of water leakage, but also by the state of automatic welding. Whether or not the joint portion to be welded can surely stop the water, as long as the camera is attached to the automatic fusion splicer, it can be confirmed immediately after the welding. When the amount of separation of the steel wall and the temporary steel wall is large, and the soil sand can be invaded from the lateral surface, any shielding member may be provided between the steel wall and the temporary steel wall for prevention. Patent Application No. 2, the method of manufacturing a steel wall according to claim 1, wherein 'between the steel wall and the temporary steel wall' or the steel wall and the temporary installation The end portion of the steel wall is provided with a shielding member for preventing the soil sand from entering the above-mentioned field, and forms the aforementioned field. The shielding member is preferably a steel material, and is not particularly limited as long as it can be flushed between the steel wall and the temporary steel wall. Further, the shielding member may be combined with the steel slab or the temporary steel sheet pile, and it is not necessarily required to be combined. However, the present invention provides a method for producing a water-blocking steel wall having a high water-shielding property of the joint portion, but it is not only the water-shielding at the time of manufacture, but also considers the corrosion rate of the steel material (fresh water 〇. It is sufficient to determine the welding length of the welded portion, such as 2 mm/year or less. When the welding length of the welded portion is formed to be equal to or greater than the minimum thickness of the steel sheet pile, the corrosion resistance of the steel wall body or more can be sufficiently ensured. And '彳At is the area that is held by the steel wall and the temporary steel wall, and the soil sand removed by the control -11 - (8) 1269823 is buried after the automatic welding of the joint is completed, and the row can be eliminated. earth. In addition, whether the position of the water-shielding steel wall is contaminated by waste can be confirmed by the inspection of the excavated soil and immediately after the construction starts. Further, after the embedding of the soil, the middle portion of the atmosphere of the water-shielding steel wall is covered by the umbrella-shaped concrete or the like, and the corrosion amount of the water-shielding steel wall can be greatly reduced, and the number of years of supply can be greatly extended. According to a third aspect of the invention, in a method of manufacturing a steel wall, a method of manufacturing a steel wall in which a plurality of steel materials having joints at both ends are connected to each other is characterized in that the joints of the steel materials are fitted to each other. A steel wall having a double-wall structure having a closed region on the inner side is formed, and then the joint portion of the steel wall is automatically welded after removing the soil sand and/or moisture in the closed region. The present invention is suitable for a sea surface or a surface waste disposal site, and the like is a method in which a large amount of water is used as a water bottom site, and a water receiving place is required. The steel material having the joint of the steel wall forming the double-wall structure is a box-shaped steel sheet pile or the like, and a closed region is formed by fitting of the joints of the inner side and the outer side. Further, for the box type steel sheet pile, for example, a straight steel sheet pile type, a Η-shaped steel sheet pile or a Z-shaped steel sheet pile, a U-shaped steel sheet pile, or a cross-sectional shape in which the straight-type steel sheet pile is disposed in a two-layer arrangement The straight-line combination of the directional alignment may be a double arrangement of the asymmetric U-shaped steel sheet piles, or a steel sheet constituting the partition wall or a steel such as a Η-shaped steel or a Τ-shaped steel to form a box shape, etc. It is not particularly limited as long as it can form a steel walled body having a double-wall structure having a closed field of -12-(9) 1269823 on the inner side. The reason for the formation of the double-wall structure or the box type is that it is easy to carry out the automatic welding in the double-wall, and it is possible to check the leakage of water from the waste site in the double-wall, even if It is easy to wait for refilling or filling of the water stop material in the double wall, and these are safety devices that can follow the construction progress. The shape of the double wall is different depending on the type of the steel sheet pile. However, when the water or the like in the double wall is removed, the state of the water oozing from the joint portion of the steel wall and the bottom surface of the double wall can be determined. It can be judged whether it can be automatically welded. Specifically, in the case of constructing a steel wall in a water area, a steel wall having a double-wall structure is formed by punching a steel material, and drainage is performed by a pump or the like provided in the double wall, from the joint portion or the bottom surface of the double wall The infiltration of water is a rare state, for example, the degree of adhesion of moisture and the amount of influent water can be evaporated by the arc heat of the fusion, or the amount of the following can be automatically welded. Further, it is possible to confirm the water leakage from the welded portion by visual confirmation or by a camera or the like, and repair it in place as needed. However, in the closed field of the present invention, if it is in water or the like, it can be drained only by a pump or the like. However, when it is on a moor or the like, the soil sand is removed as needed, and the welded portion of the joint portion is washed. The cleaning of the joint portion is performed for the purpose of welding, and the quality of the welding is further ensured, and water jet or high-pressure jetting of air or the like is effective. . The automatic welding of the joint portion, for example, the guide 13-(10) 1269823 for automatic welding by a magnet is attached to a steel sheet pile or the like, and can be carried out by a usual method. In the present invention, the welding speed of the length of the required thickness of the welded portion can be ensured, for example, 10 to 20 cm/min before and after MAG welding using CO 2 gas as a sealing gas, and twice as much as in the plasma welding. The welding of the same level of quality over a long period of time can be achieved by simple setting. Therefore, compared with the welding work of the welder, the welding can be performed homogeneously and efficiently, and when it is used in the waste of the steel sheet pile, the longer the welding is, the lower the welding cost can be. However, regarding the performance of the joint weld portion, a steel sheet pile having an asymmetric joint having a pre-wet state is used, and the weld joint interval and the speed are attempted to automatically weld the joint portion, and the weld joint thickness is measured by cutting the welded portion. As a result of the welded portion, it has been confirmed that a sufficient welded thickness and a welded portion can be obtained by automatic welding even if the joint is in a wet state. Whether or not the joint portion to be welded can surely stop the water, as long as the camera is attached to the automatic fusion splicer, it can be confirmed immediately after the welding. Further, for welding, a working space or a rest space is required for welding by the welder, and the welding itself is a vertical direction welding (transverse welding) which is difficult compared with the lower direction welding. In the present invention, by the welding of the automatic welding, it is not necessary to ensure a large working field as compared with the work of the fusion splicer, and since the soil sand and/or moisture in the closed field is removed for welding, the water fusion is not required. With the special machine, the uniformity of the welding quality can be maintained. That is, the present invention is a method for manufacturing a water-blocking steel wall which can satisfy the environmental safety of a material surface and which has a function as a safety device for a tool-type trace type--14-(11) 1269823. However, when there is a large amount of water leakage from the joint portion, it is difficult to directly auto-weld, for example, in the outer side of the joint portion or in the joint fitting portion, the length of the joint for the gap between the joints is continuously long. The strip member reduces water leakage from the joint portion, making automatic welding easy. Specifically, the elongate member is a resin rod member, a tube, a metal round bar or the like in which a small diameter that can enter the gap of the joint fitting portion to be welded, or a thin plate is provided outside the joint. High-resin sheet of melting point, etc. When the water in the steel double wall is drained by the pump in this state, the long member can be adhered to the gap of the joint portion by the difference in water pressure between the inside and the outside, and the water stopping effect can be obtained. Thereby, the amount of water leakage is reduced and the automatic welding is facilitated. The method for producing a steel wall according to claim 4, wherein the upper part of the soil sand and/or moisture is removed by the water-shielding layer existing in the closed area, and is automatically welded. Until the bottom of the water. For example, in the case where there is a water-repellent layer in the submarine site at the surface of the sea surface waste, even if the sea portion is covered with water, the water layer above the water-repellent layer such as the clay layer of the sea floor site may have insufficient water stoppage. In this case, the soil sand or the like in the upper portion of the water-shielding layer is removed, and if necessary, a part of the water-blocking layer is removed to be automatically welded, and the water-stopping property can be ensured even for the sea floor portion. Specifically, the ground surface of the water-blocking layer is dug by a water jet or a digging machine, and the soil sand is drained together by a sand pump or the like, and the joint portion of the object -15-(12) 1269823 is covered by automatic welding as described above. water. After that, the lower side is buried as a water-blocking layer. Although it is not necessary to discharge the soil, the drained water is filtered by a sand pump or the like from the floating boat or the temporary working space into fine particles and coarse particles. After the water-stopping material is required, these are sequentially sown into the steel double-wall by fine particles and coarse particles, and the water permeability coefficient from the inner bottom surface of the steel double-wall can be reduced, and the high water-shielding with reliability can be obtained. structure. Patent Document No. 5, a steel wall, a plurality of steel materials having joints at both ends are steel walls joined by the joints, and the joint portion is covered by a steel water-stopping material. The water-stopping material and the steel material and/or the water-stopping material are continuously welded to each other without a gap in the longitudinal direction. In order to obtain high water repellency of the joint portion of the steel wall, the joint portion of the steel material such as the steel sheet pile is covered with the water-stopping material, and the steel material, the water-stopping material, or the water stop is used. The shapes are continuously welded to each other or both without a gap in the longitudinal direction. This joining can be performed by an automatic fusion splicer or the like by removing the soil sand or moisture in the vicinity of the welding position and ensuring a space for welding. Patent Document No. 6, the steel wall of claim 5, wherein the water-stopping material is formed so as to cover the joint, and is engaged or welded to the vicinity of the joint of the steel material. The water-stopping material that covers the joint portion may be a steel material that is attached to one of the steel materials by welding or the like in advance, and the steel material is provided with a locking portion that extends in the longitudinal direction of the steel material, and the water-stopping material is a lip-attached material. The grooved steel or the mountain-shaped steel with the lip--16-(13) 1269823 may be used to engage the lip portion of the end portion of the water-stopping material with the locking portion of the steel material. The water-stopping material to be attached to the steel material, the steel material to which the other steel is welded, the water-stopping material to be welded to both of the steel materials, the water-stopping material to be attached to the steel material, and the card for the steel material to be placed on the other side. The steel portion of the sealing member, the lip portion or the flange portion of the water-stopping member, and the steel member provided on both sides or the steel member of the both sides are welded to each other, and any of the steel walls are The purpose of the invention of the present invention can be fully achieved. Such a water-stopping material may cover the joint portion in addition to the above-mentioned lip-rimmed steel or the lip-attached mountain-shaped steel, and is not particularly limited in cross-sectional shape as long as it can be easily attached to a steel wall. Further, the material of the water-stopping material may be other than steel as long as it has moderate strength and weldability. Patent Application No. 7, the steel wall of claim 5 or 6, wherein the joined steel material is flushed into water and/or in the ground. The method for producing a steel wall according to the eighth aspect of the invention is the method for producing a steel wall in which a plurality of steel materials having joints at both ends are connected to each other, wherein the steel material is formed by fitting the joints to each other. a steel wall having a double-wall structure having a closed region on the inner side, and removing the soil sand existing in the closed region in a state where the closed region side of the joint is covered with a steel water-stopping material. Or moisture, will cover the water-stop shape of the joint and before. The steel material or the water-stopping material are continuously welded to each other without any gap in the longitudinal direction by automatic welding. -17- (14) 1269823 A steel-type steel sheet pile or the like having a joint of a steel wall forming a double-wall structure is fitted in the field by a joint of the inner side and the outer side. Moreover, for the box type steel sheet pile, for example, a straight steel sheet pile type, a Η-shaped steel sheet pile, a pile, a U-shaped steel sheet pile, or a cross-sectional shape in which the cross-sectional shape is linearly combined may be provided. The asymmetrical U-shaped steel sheet pile is formed into a steel wall having a double-wall structure on the inner side, or a steel sheet forming a partition wall or a steel such as a bismuth steel. It is not particularly limited as long as it is a shape that can form a shape near the joint. Patent Document No. 9, a steel wall method in which a plurality of steel materials having joints at both ends of a steel wall are joined to each other, wherein the steel material is formed by fitting the joints into a steel wall, and then a closed region is formed in the vicinity of the joint of the steel wall to the water-shielding layer, and the joint is covered with the water-stopping material, and the grounding sand and/or moisture is removed to cover the joint. The water-stopping steel or the water-stopping material is continuously welded to each other by the automatic welding in the length gap. The steel wall of Patent Application Nos. 5 to 7 is a case where a double-walled wall is formed without restricting the manufacturing method of the steel wall of the eighth aspect, and in the case of a steel wall having a heavy-wall structure, it is patentable. In the ninth item, the soil sand in the vicinity of the joint of the steel wall is a sealing water that has a closed layer between the boxes and is arranged in a double-layered steel or closed area. The material in the field of the field and the direction of the above-mentioned direction is used for the purpose of applying for the cutting to the water layer of the -18-(15) 1269823 water layer. In other words, the closed region formed on at least one side of the steel wall can be used as a space for automatic welding or the like. However, the 'manufacturing method of the steel wall according to the eighth or ninth aspect of the patent application' is for preventing the penetration of water into the closed side formed on the inner side of the double wall structure or the sheet side of the steel wall, and is stagnate as needed. The moisture in the field surrounded by the water-stopping material and the steel material is discharged, or the filling material is filled in the field surrounded by the water-stopping material and the steel material. In addition to materials that can be absorbed by moisture, such as mortar, mortar or polymer water absorbing materials, asphalt, clay, strontium sand, etc. can also be used. In addition, in the eighth or ninth aspect of the patent application, the soil sand or moisture in the closed field of the manufacturing method of the steel wall is removed, and in the case of water, etc., it can be drained only by a pump or the like, in a moor, etc., as needed. The soil sand is removed, and the gap between the water blocking material and the steel material covering the joint portion is washed. A specific method of removing the soil sand or the like is a method in which the ground to the water-shielding layer is more frequently excavated by a water jet or a digging machine, and the soil sand is drained by a sand pump or the like. The welding of the steel material such as the steel sheet pile and the water-stopping material covering the joint, or the welding of the water-stopping material, is a normal automatic welding in which the automatic welding is guided by a magnet to, for example, a steel material. Methods. In the present invention, the 'splicing speed of the length of the required thickness of the welded portion can be ensured to be 10 to 20 cm/min before, for example, MAG welding using C 02 gas as the sealing gas, and twice the distance in the plasma welding. 19- (16) 1269823 degrees 'The welding of quality of almost the same degree across a long period of time can be achieved by simple setting. Therefore, compared with the welding operation of the welder, it is possible to weld the waste material to the steel sheet pile, and the longer the welding length, the lower the welding cost. Further, for welding, a working space or a rest space is required for welding by the welder, and the welding itself is a vertical direction welding (transverse welding) which is difficult compared with the lower direction welding. In the present invention, by the welding of the automatic welding, it is not necessary to ensure a large working field as compared with the work of the fusion splicer, and since the soil sand and/or moisture in the closed field is removed for welding, the water fusion is not required. With the special machine, the uniformity of the welding quality can be maintained. The method of manufacturing a steel wall according to claim 8 or claim 9, wherein the soil sand and/or moisture present in the closed field is removed to the upper portion of the water-blocking layer. . For example, when there is a water-shielding layer in a submarine site where the sea surface waste is divided, even if the sea portion is covered with water, the water layer above the water-repellent layer such as the clay layer of the sea floor site may have insufficient water stoppage. . In this case, the soil sand or the like in the upper portion of the water-shielding layer is removed, and if necessary, a part of the water-shielding layer is removed, and the water-stopping material covering the joint is flushed into the water-shielding layer, and then the filling material is put into the water-repellent material. In the field surrounded by the water-stopping material and the steel material, the water in the field surrounded by the water-stopping material and the steel material is discharged by a pump or the like to prevent water from penetrating into the closed area from the field. In addition to the soil sand and/or moisture present in the closed field, the joint portion of the steel and the water-stopping material that will be located in the atmosphere is finally -20-(17) 1269823 or the water-stopping shapes are automatically welded to each other. In this case, water repellency can be ensured even for the sea floor portion. Patent application No. 1, item 1, a sheet pile type steel wall, in which a plurality of steel sheet piles having joints at both ends are formed by the above-mentioned joints, which are formed by a coiled steel wall. The steel plate roll has a flat portion in the same direction as the punch line in the vicinity of the joint, and the cross-sectional shape of the joint at both ends is asymmetrical to the left and right, and one of the joints that are engaged with each other is The flat portion is formed inwardly, and the other side of the joint is formed outwardly with respect to the flat portion, and further has a projection at a base portion of at least one of the joints of the joint, and the cross-sectional shape of the steel sheet pile is aligned in the same direction. A plurality of steel sheet piles may be connected to each other in a straight line, and the protrusions of the one of the joints and the outer surface of the other joint may be continuously welded without a gap in the longitudinal direction. A steel sheet pile having an asymmetrical joint may be any of a straight type, a U type (a shape having a flange on the net and both sides thereof, etc.). Further, the type of welding between the protrusion of the one of the joints and the outer surface of the other joint can be sealed by gas sealing using TIG, MIG, MAG, ion arc or the like, and the type of the welding material or the sealing gas is not required. . The rotation of the joint portion of the steel sheet pile is restrained by the projection provided at the base of the joint. Patent application No. 12, a sheet pile type steel wall, a plurality of steel sheet piles having joints at both ends are sheet pile type steel walls joined by the joints, and the steel sheet pile is characterized by In the vicinity of the joints 21 - (18) 1269823 at both ends, there is a flat portion in the same direction as the flushing line, and the cross-sectional shape of the joints at the both ends is left-right asymmetric, and one of the joints that are engaged with each other is for the flat The portion is formed inwardly, and the other side of the joint is formed outwardly with respect to the flat portion, the base portion on the joint side in the inner direction has an inward projection, and the base portion on the outward joint side has an inward rising portion. In a state in which the cross-sectional shape of the steel sheet pile is aligned in the same direction, a plurality of steel sheet piles can be linearly connected to each other, and the outer side surface of the outward joint and the inward projection are freely spaced in the longitudinal direction. Continuous welding. In other words, the first aspect of the patent application is a sheet pile type steel wall corresponding to the first aspect of the patent application, and the base portion on the inward side of one of the joints has the protrusion, and the other joint is The base on the outward joint side has an inwardly rising portion. A sheet pile type steel wall according to claim 1 or claim 1, wherein the plurality of steel sheet piles are two sheet pile walls joined by the joints at the both ends, The joint portions of the joints of the respective sheet pile walls are flushed into the water and/or in the ground while being inwardly opposed to each other. Another problem common to the respective techniques described in the prior art is that it is necessary to manufacture and mount the protrusion-like protrusion for the spacer of the steel sheet pile, the joint member of a special shape, the water-shielding member, or the restraining member because It is necessary to improve the water-shielding sealing material for water repellency, the water-repellent material having swelling property, or the ash material, etc., and the cost for realizing water shimming (the manufacturing cost of the water-shielding member, the water-shielding material, or the on-site construction) is improved. cost). -22· (19) 1269823 Further, there is a decrease in the water repellency due to the external force acting on the water-blocking material, the swellable water-blocking material, or the deterioration of the mortar material or the peeling of the sheet pile wall. The problem. In order to solve such a problem, the applicant has invented the feature of the joint shape of the steel sheet pile having the above-described non-symmetric joint, and applies the joint of the joint connecting portion. Further, as will be described later, in the connection portion between the right and left asymmetric joints, the outer side surface of the outer joint and the inward projection are continuously welded in the longitudinal direction of the steel sheet pile, and the base portion on the outer joint side will be Compared with the case where the inwardly protruding rising portion and the outer side surface of the inward joint are continuously welded in the longitudinal direction of the steel sheet pile, the welding of the former is relatively stable, and it is relatively easy to form the welded bead without a gap. The water repellency of this part was found. However, a non-consumable electrode type welding method such as TI G or plasma arc welding is applied to the case where the outer side surface of the outer joint and the inward protrusion are welded, and the melting protrusion is welded without using a welding material and welded to the outer side surface. It is also possible to melt the protrusion and the outer side together. Apply for a special. In the fourth aspect of the invention, a steel sheet pile having a joint at both ends thereof is characterized in that: a flat portion in the same direction as the flushing line is provided in the vicinity of the joint at both ends, and a cross-sectional shape of the joint at both ends One of the joints that are asymmetrical to each other and that are engaged with each other is formed inwardly with respect to the flat portion, and the other side of the joint is formed outwardly with respect to the flat portion, and has a protrusion at a base portion of at least one joint of the joint. Cross-sectional shape of steel sheet piles. In the state in which the same direction is aligned, the plurality of steel sheet piles are linearly coupled to each other, and a part of the protrusions or all of the -23-(20) 1269823 portions are made of a material having a lower melting point than the other portions. The overall shape of the steel sheet pile may be any one of a straight type, a U type (a shape having a flange on the net and its both sides). It is preferred that a part or all of the low-melting material constituting the protrusion, such as a fusion material (filled metal) or a wax-attached electrode (brass or silver electrode) having a lower melting point than the steel. The rotation of the joint portion of the steel sheet pile is restrained by the projection provided at the base of the joint. Patent application No. 15, item 5, a steel sheet pile, which is a steel sheet pile having joints at both ends, characterized in that: in the vicinity of the joints at both ends, there is a flat portion in the same direction as the flushing line, and the joints of the two ends are horizontal The cross-sectional shape is asymmetrical to the left and right, and one of the joints that are engaged with each other is formed inwardly with respect to the flat portion, and the other side of the joint is formed outward for the flat portion, and the base portion of the inward joint side has an inward portion. The protrusions 'the base portion on the outward joint side has an inward rising portion'. In a state in which the cross-sectional shape of the steel sheet pile is aligned in the same direction, the plurality of steel sheet piles are linearly coupled to each other, and the protrusions are Some or all of them are made up of materials that have a lower melting point than others. That is, the fifteenth application patent range is a steel sheet pile which is equivalent to the fifteenth item of the patent application range, and the base portion on the inward side of one of the joints has an inward projection, and the outer joint of the other joint is outward. The base on the joint side has an inwardly rising portion. The steel sheet piles of the first or fifth aspect of the patent application are connected to each other by the joint portion, and the protrusions are heated to make the outer surface of the joint portion and the protrusion -24 (21) 1269823 continuous in the longitudinal direction without gaps. Bonding makes the sheet pile steel wall have high water repellency. When the means for heating the projections at the time of forming the joint portion is a gas-sealed arc welding, the non-consumption electrode type such as TIG or plasma arc is optimal, and the type of the sealing gas is not required. For example, in the case of bonding in water, a method of heating the joint portion by a plasma arc welding is suitable, and if it is joined in the atmosphere, a method of melting the metal or wax by heating the flamethrower may be used. In the same manner as in the case of the first to third paragraphs of the patent application, the applicant has the outer side surface of the outer joint and the inward projection of the outer joint of the left and right asymmetrical joints in the longitudinal direction of the steel sheet pile. For the purpose of no-gap joining, the case where the inward projection is formed with a material having a lower melting point than the other portions of the steel sheet pile, and the case where the inward projection is formed of the same material as the other portion of the steel sheet pile Compare. However, at this time, the heating means is a plasma arc welding apparatus using one of non-consumable electrode type gas-sealed arc welding, and a method of heating the inward projections in the atmosphere is employed. For the former 'before the base metal begins to melt, the low-melting point material forming the inward protrusion is melted, and the joint of the low-melting point material is relatively easy to be melted between the outer side surface of the outer joint and the inward protrusion. The material is formed without gaps and with water repellency. (Effect of the Invention) According to the present invention, a steel sheet pile of -25-(22) 1269823 is produced by joining steel materials having joints, and a space for automatic welding of the joint portion is formed, and construction property is not lost. It is possible to obtain efficient and inexpensive high water repellency. In particular, in the method for manufacturing a steel wall according to the first and second aspects of the patent application, it is possible to efficiently and inexpensively use the space for automatic welding of the joint portion of the steel sheet pile wall by using the temporary steel sheet pile. The ground is uniformly welded, and the high reliability of the water-blocking wall can be expected for the completed steel wall. Further, in the method for producing a steel wall according to the third and fourth aspects of the patent application, the inner closed space of the steel wall having the double wall structure is used, and the joint portion is automatically welded, whereby the homogeneous welding can be performed efficiently and inexpensively. For the completed steel wall, high reliability of the water blocking wall can be expected. In addition, by checking the water leakage after welding, it is possible to re-weld on the spot as needed, and the water quality inspection can be performed in the double wall for the harmful substances flowing out in the disposal site, etc., in case of water leakage, The water material is filled in the double wall to cope with it, and has a safety device function. The steel wall of the fifth to tenth patent application is not limited to the inner closed region of the steel wall having a double wall structure formed by joining steel materials having joints at both ends, or is double-layered. The wall structure uses a closed space secured in the vicinity of the joint portion of the steel wall, and the water-stopping material and the steel material and/or the water-stopping material covering the joint are free from each other in the longitudinal direction by automatic welding or the like. The continuous welding of the ground does not give an obstacle to the connection of the joints of the steel materials, and the steel wall can be efficiently and inexpensively manufactured, and the high reliability of the water shielding wall can be ensured for the completed steel wall. The sheet-and-pile steel wall of the patent scopes 1 to 13 is because the joint of the steel sheet pile that has been connected and flushed can be welded without gaps, and -26-(23) 1269823 can be completely Prevent groundwater or seawater from intruding from the joint portion of the steel coil. Moreover, since it is not necessary to use a swellable water-blocking material or a water-blocking member, the manufacturing cost and the construction cost are low, and by combining with other steel materials such as steel sheet piles and H-shaped steel, it is possible to realize various types of profiles. Performance of steel walls. According to the steel sheet piles of the first and fifth aspects of the patent application, the joint portion of the steel sheet pile that has been connected and constructed has no problem of jointing, so that the joint can be stably completed without a gap. [Embodiment] Fig. 1 is a first embodiment of the patent application scope of the present invention, and a steel material having a joint and a temporary steel material are shown as a flow chart of a construction procedure in which a steel sheet pile is used, and the following procedure is used. Do the homework. The construction of the steel wall is started from the completion of any part of the water-shielding steel wall according to the construction capacity of the steel sheet pile punching machine and the number of used units (Fig. 1a). At least one place is set up with a temporary steel sheet pile (Fig. 1b) to form a field surrounded by a part of the φ steel wall and the temporary steel sheet pile (Fig. 1c). Cut off (. After the first figure d), the joint portion of the steel wall in the field is cleaned (Fig. 1 e). Next, the automatic fusion splicer is assembled in the field (Fig. 1 f), and automatic welding is performed (Fig. 1 g). After confirming that the water can be stopped, remove the temporary plate (Fig. 1 h). The water-blocking steel wall is completed by returning the above a to h. -27- (24) 1269823 However, before the temporary setting of the steel sheet pile in h, the next temporary steel sheet pile is set up, and b~g can also be carried out. In this case, the temporary steel sheet pile is drawn first. It is possible to carry out at any time, and for example, after confirming the reliability of the water stop of the welded portion which is performed first, it may be removed. Fig. 2 is a view showing a steel material which does not constitute the steel wall A, and is an embodiment in which the U-shaped steel sheet pile 11 is used. The steel wall A is a joint of both ends of the U-shaped steel sheet pile 1 1 which is reversely arranged alternately. Formed by connecting to each other. On the sheet side of the steel wall A, in this example, a temporary steel wall D composed of the same steel sheet pile temporary steel sheet pile 1 11 is disposed, and the steel wall A and the temporary steel wall D are formed. Closed field B. Further, in order to form one closed field B in this example, three temporary steel sheet piles 11 are used, and the welded joint portion J of the steel wall A of the closed field B has two places. However, when the steel sheet piles 1 11 are temporarily connected to each other, two closed fields B can be simultaneously formed, and the joint portions J of the welded objects in the closed fields B are four. Further, when the temporary steel sheet piles 1 11 are connected in seven pieces, three closed fields B are formed at the same time, and the joint portion J of the welding target is six. These can be appropriately determined depending on the construction conditions, the shape of the steel, the construction machine, and the construction procedure. Fig. 3 is a view showing a steel material constituting the steel wall A, and the joint shape of the joint portion J at both ends is asymmetrical to the left and right. The cross-sectional shape can be aligned in the same direction and linearly joined, and the joint portion J at both ends is provided. The flat portion in the same direction as the rushing line, the one of the hook-shaped joints that are engaged with each other is the inward of the outermost edge of the steel wall A, and the outer side is formed by the non-pair -28-(25) 1269823 An embodiment of the case of the U-shaped steel sheet pile 1. However, the joint shape of the above-described asymmetric U-shaped steel sheet pile 1 is described in detail in the description of other embodiments. In this case, as shown in the figure, even if the steel sheet pile 11 is temporarily used, if the asymmetric U-shaped steel sheet pile is used, one closed field B can be formed by one asymmetric U-shaped steel sheet pile. Of course, it is also possible to connect a plurality of asymmetric U-shaped steel sheet piles of the temporary steel sheet pile 11 and form a plurality of blocking fields B at the same time. Further, in the case of using such an asymmetric U-shaped steel sheet pile, compared with a U-shaped steel sheet pile having the same degree of section rigidity, the characteristics of the asymmetric joint in which the cross-sectional shape can be aligned in the same direction and linearly joined, The thickness of the water-repellent steel wall A can be suppressed to be small. Therefore, when it is applied to, for example, a waste disposal site, even if the space available for construction is limited, it is possible to manufacture the steel wall A which becomes the largest effective volume of the waste disposal site. Further, when an asymmetric u-shaped steel sheet pile is used for the steel wall A or the temporary steel wall D, as shown in Fig. 3, the joint portion J of the welding target can be disposed at the farthest position from the temporary steel sheet pile 11. Since all of the welded joints have the same direction, there is an advantage that automatic welding is easy. FIG. 4 is a view showing a case where the steel material constituting the steel wall A of the 7K is integrated with the asymmetric υ type steel sheet pile 1 which is used to increase the rigidity of the steel wall A. example. In this example, the temporary steel sheet pile 11 is formed by using an asymmetric U-shaped steel sheet pile, and the temporary steel sheet pile 11 is formed by two temporary steel sheet piles 11. In this case, a large closed field B is formed, and after removing the soil sand of the closed field B, -29-(26) 1269823 can automatically weld the joint portion of the steel wall A from the inside. The same applies to the case where a non-symmetric U-shaped steel sheet pile 1 is used to form a normal U-shaped steel sheet pile or a straight-type steel sheet pile, and a T-shaped other steel material is used instead of the Η-shaped steel that connects the steel material 1 c. Further, as long as the field in which the automatic fusion splicer can be welded can be obtained, instead of the temporary steel sheet pile 11, a temporary steel sheet pile of any form can be used. Fig. 5 is a view showing a steel material constituting the steel wall A, which is a straight-type steel sheet pile 2 1, and a shield member 2 1 s with a steel plate, a Η-shaped steel or a Τ-shaped steel is provided between the temporary steel walls D ( Or an example of the case of 2 1 s', 2 1 s") (corresponding to the second item of the patent application scope). The case where the steel wall A is formed by the straight steel sheet pile 2 1 , and the U-shaped steel sheet pile or non- Compared with the symmetrical U-shaped steel sheet pile, it is difficult to increase the separation distance from the steel wall a and the temporary steel wall D. Therefore, it is desirable to shield the member 2 1 s (or 2 1 s as shown in Fig. 5). ', 2 1 s ') occludes the horizontal surface of the field B to ensure the minimum water repellency for automatic welding, or to prevent the inflow of earth and sand into the cut portion. In the case where the distance between the steel wall A and the temporary steel wall D is not fixed, the steel plate as the shielding member is provided in the field beside the field in which the automatic fusion joint exists, for example, in FIG. 2 or FIG. Or steel, etc., can prevent the soil sand from flowing into the part that is being dug. As shown in Fig. 5, in the case where the earth pressure shielding member 21s (or 21s, 21s) is dropped, it is sufficient to perform deep planting or to provide a spacer. Further, as described above, the concealing member 21s ( Or 21s, 21s ") does not have to be in contact with steel wall A or temporary steel wall D. -30- (27) 1269823 Figure 6 is the third application of this case, with a joint The steel material is a box-type steel sheet pile, and an example of a construction procedure to be applied to a seawater area is shown by a flowchart, and the following procedures are used (the same applies to rivers, lakes, etc.). The construction of the steel wall (double wall of the steel sheet pile) of the double-wall structure of the box-type steel sheet pile from the part of the completed water-shielding steel wall (Fig. 6 a) Then, in each closed area of the double wall partitioned by the box type steel sheet pile, the internal seawater is drained by a pump or the like (Fig. 6b). It is confirmed that the water leakage in the closed area is small, and the box type steel plate can be used. The joints of the 椿 are welded by an automatic fusion splicer (Fig. 6c). The basic procedure of the manufacturing method. However, when there is a large amount of water leakage from the steel sheet pile joint portion or the bottom surface of the steel sheet pile double wall, the plug joint is provided outside the joint portion or in the joint fitting portion as described above. The countermeasure against the leakage of water into the long members such as the gaps between the two, and the soil layer structure of the submarine ground, that is, the position, thickness, and trait of the clay layer that becomes the sand layer or the water-blocking layer Excavation of the bottom soil is removed (Fig. 6 d), after cleaning the joint (Fig. 6 e) 'Assemble the automatic fusion machine (Fig. 6 f), after the drain of Fig. 6 of the basic procedure, perform automatic welding (Fig. 6 g) Fig. 7 is a view showing an example of a case where a steel sheet wall constituting the steel wall of the present invention is used, and a box type steel sheet pile 3 1 in which a linear steel sheet pile is disposed in two layers is used. The box-shaped steel sheet pile 3 1 shown is a steel material having a slightly cross-shaped cross section in which two parallel flanges -31 - (28) 1269823 portions 3 1 f are connected by a mesh portion 3 1 w, and each flange portion 3 1 f is a form of a straight steel sheet pile having fitting joints 3 2, 3 3 at both ends The adjacent box-shaped steel sheet piles 3 1 are formed by fitting and sequentially connecting the joints 3 2 and 3 3 at both ends of the parallel flange portions 3 1 f, and gradually forming a closed side on the inner side. The steel wall A of the double-wall structure of the space B. In the construction of the water area, normally, the closed space B is filled with almost water, and the lower portion is in a state of soil sand deeply planted on the bottom plate. The water inside the closed space B is drained by a pump or the like, and the fitting joint portion J of the joints 3 2, 3 3 is welded from the inside by the automatic welding machine by the closed space B, thereby securing the water stop of the joint portion J by welding In the case where the water oozes from the bottom side of the water, the soil sand is removed by water jet or a control machine or the like at a predetermined depth of the bottom surface of the water, and the joint portion J is automatically welded to the soil portion of the deep-planted portion. Buried back. However, as described above, the welding of the joint portion J is such that the moisture adhering to the water and the amount of the inflowing water can be evaporated by the arc heat of the welding, or the amount of the molten iron can be automatically welded, and the water leakage is a problem. It is necessary to re-weld the joint portion J or to perform other measures for water leakage. The first to third figures are an example of the countermeasure against water leakage. However, the symbols of the joint portion are the same as those in the embodiment of Fig. 9 and Fig. 1 and the like, using the symbols (joints 3 2, 3 3 ) of Fig. 7 . -32- (29) 1269823 Fig. 1 '' is the outer side of the joint portion J formed by the fitting of the joints 32, 33 (the steel wall A is subjected to water pressure higher than the inner side or the earth pressure side from the outside) It is composed of a flexible sheet-like synthetic resin, and is provided in a continuous strip (long strip) member s 1 in the longitudinal direction of the joint portion. When the water inside the double wall and/or the soil sand are discharged, the water pressure or the earth pressure on the outer side of the double wall is higher than the inner side, so the long member s 1 is the gap between the suction joints 3 2, 3 3 The form is in close contact with the joint portion j, and in its portion, it is possible to completely block the water from flowing from the outside to the inside of the double wall. 12 and FIG. 3 are not the outer side of the joint portion J, but are embedded in a fitting portion of the joints 3 2, 3 3 that are fitted to each other, and are embedded with a resin rod member, a tube, or a metal round rod. The case of the elongated member s2. The long member s2' is inserted into a gap larger than the diameter when it is inserted. In this state, if the water inside the double wall and/or the sand is discharged, the water pressure or the earth pressure on the outer side of the double wall is different. Since the inner side is high, the elongated member s2 is in the form of being sucked toward the inner side of the double wall, and is in close contact with the wide portion of the gap between the joints 3, 3, 3, and the water can be blocked from the outer side of the double wall. Flows towards the inside. However, the elongated members s 1 and s 2 are made of a flexible material or a resilient material, and the tightness will be obtained. Increase, more close to complete water occlusion ‘as long as it does not affect the degree of automatic welding, a slight leak is allowed. Fig. 8 is a view showing a case where a steel-walled steel material which does not constitute the invention of the present invention is used, and a box-shaped steel sheet pile in which an asymmetric U-shaped steel sheet pile is disposed in two layers is used. -33- (30) 1269823 The box-type steel sheet pile 3 1 ' shown in Fig. 8 has the shape of the joints 3 2, 3 3 at both ends being asymmetrical to the left and right, forming a linear shape in which the cross-sectional shapes are aligned in the same direction. It is possible to have a flat portion in the same direction as the punching line in the vicinity of the joint portion at both ends, and one of the hook-shaped joints 3 2, 3 3 that are engaged with each other is inward, and the other side is formed outward. The asymmetric U-shaped steel sheet pile having the joints 3 2, 3 3 is placed in a two-side back surface, and is welded and integrated. For the adjacent box-type steel sheet piles 3 Γ, the steel walls of the double-wall structure having the closed space B on the inner side are gradually formed by sequentially joining the joints 3 2, 3 3 at both ends. A. The soil sand in the closed space B or the discharge of water, the automatic welding, and the water leakage countermeasure are the same as in the case of the embodiment of Fig. 7. Fig. 9 is a view showing another embodiment in which the steel material constituting the steel wall of the present invention is used in the case where the asymmetric U-shaped steel sheet pile is placed on the double-layered box-shaped steel sheet pile 3 1". In the steel sheet pile 3 Γ, the asymmetric U-shaped steel sheet pile is placed in two back-side joints, and the welded-integrated steel sheet pile 3 1" is placed on the two back-side joints. Between the symmetrical U-shaped steel sheet piles, the welded steel is used as the joint steel 3 1 c to integrate the joints to improve the section rigidity. In other words, the length of the steel material connecting the asymmetric U-shaped steel sheet piles is increased to increase the section rigidity, and the joint steel material 3 1 c is used to increase the torsional rigidity by using the crown steel, thereby reducing the occurrence of welding deformation. Making it easy. Further, in the embodiment of Figs. 7 to 9 , a plurality of box-shaped steel sheet piles are previously welded to form elements on the land, and those which are connected to each other may be connected. The first drawing is a view showing a steel material constituting the steel wall of the present invention, and is an embodiment in which a normal U-shaped steel sheet pile 1 1 is used. In this example, the steel material itself is not a box type, but the U type is used. The steel wall double layer formed by the steel sheet pile 1 1 is disposed in a double wall structure, and the closed field B can be formed on the inner side. In this case, the number of joints J is also increased. In order to improve the workability, a plurality of U-shaped steel sheets 11 are welded to the ground in advance, and then flushing is performed. Fig. 14 is a steel material having a flat portion in the vicinity of the joint, and a box type steel sheet pile 3丨 as shown in Fig. 15 is used. An example of a construction procedure applied to a seawater region is shown by a flowchart, and the following procedure is used. The work is carried out (the same applies to rivers, lakes, etc.). (1) The steel wall A (steel pile double wall) of the double-wall structure of the box-type steel sheet pile 1 is started from any part of the steel wall A according to the construction capacity of the steel sheet pile punching machine and the number of used machines. Construction (Fig. 14 a). The soil layer structure of the submarine ground, that is, by the position, thickness and traits of the sand layer or clay layer, the water-contaminated soil sand will be deposited in the double wall of the upper part of the water-blocking layer. Excavation, the part of the soil sand or water is discharged (Fig. 14 af). However, at this time, the water in the closed area B of the double-layered wall is completely unnecessary to be excluded. (2) Next, covering the joint portion J' of the box-type steel sheet pile 3 1 which is punched by (1), the lip portion of the lip-shaped groove-shaped steel of the water-stopping material 5 1 -35- (32) 1269823 5 1 r is engaged with the locking portion 3 1 r of the flat portion 3 4 provided in the vicinity of the joints 3 2, 3 3 of the steel sheet pile 3 1 and inserted into the double wall. If necessary, rush to the soil on the sea floor (Fig. 14b). (3) After that, in order to prevent the water in the joint water-stopping area C surrounded by the water-stopping material 5 1 and the steel sheet pile 3 1 from entering the closed field B in the double-wall, the joint water-stopping field is In C, the stagnant water is continuously discharged by a pump or the like (Fig. 14c). In addition, it is intended to prevent water from entering from the outside of the double wall to the inside through the joint portion J, and the stucco is placed in the joint water stop field C surrounded by the engaged water stop 51 51 and the box type steel sheet pile 31. In addition, it is confirmed that there is no infiltration of water from the joint water stop area C to the closed field B in the double wall by the input of the filling material. Specifically, it is sufficient to confirm the change in the water level in the closed field B in the double wall. (4) After that, in each of the closed fields B in the double-wall partitioned by the box-type steel sheet piles 31, the internal seawater (the soil sand may be used depending on the situation) may be drained (Fig. 14)) . However, in the case of the process of (in 3), it is also possible to implement in parallel with the process of (4). (5) It is confirmed that there is no water that has entered the closed area B in the double wall from the outside, and the gap between the lip-shaped grooved steel of the water-stopping material 5 1 and the box-shaped steel sheet pile 3 1 is welded by the automatic fusion splicer. (Fig. 14 e). In Fig. 15 (b), the symbol 7 indicates the welded portion. According to the present invention, it is possible to completely seal the steel wall-36-(33) 1269823 by continuously welding the joint portion of the steel material such as the steel sheet pile, etc., by continuously welding without gaps in the longitudinal direction. It is a case where a steel material having a flat portion in the vicinity of the joint portion is used, and the advantage of the shape is also large. Fig. 15 is a view showing a case where a steel plate constituting the steel wall A is used and a box type steel sheet pile 3 1 is used. The box-shaped steel sheet pile 3 1 shown in Fig. 15 is a steel material having a substantially cross-sectional shape in which two parallel flange portions 3 1 f are connected by a mesh portion 3 1 w, and each flange portion 31f has A form of a linear steel sheet pile having joints 32 and 33 that are fitted to each other at both ends. For the adjacent box-type steel sheet piles 3 1, the joints 3 2, 3 3 at both ends of the two flange portions 3 1 f which are fitted in parallel are sequentially connected, and the space is gradually formed on the inner side. The steel wall a of the double wall structure of B. In the construction of the waters, usually, the closed space B is filled with almost water, and the lower portion is in a state of being buried in the soil sand of the underwater platform. Thereafter, as shown, the lip portion 5 1 r of both ends of the lip-fitting-shaped steel of the water-stopping material 5 1 and the flat portion 34 of the flange portion 3 1 f of the steel sheet pile 31 are shown. The stoppers 3 1 r are engaged and engaged across the joints 3 2, 3 3 . After that, the water inside the closed space B is drained by a pump or the like, and the gap between the water-stopping steel material 5 1 and the steel sheet pile 3 1 is welded by the automatic welding machine by the closed space B, thereby achieving complete shielding by welding. Water-based. However, in the case where the water leaks from the bottom surface of the water, the soil sand is removed by a water jet or a rake machine from the bottom surface of the water to a predetermined depth, and the steel material for water stop 5 1 and the steel sheet pile 3 1 which are flushed into the soil are removed. After the automatic welding, the buried sand of the deep-planted part is carried out. Fig. 16 is a view showing an example of a case where a steel material constituting a steel wall is used, and a box type steel sheet pile 3 in which an asymmetric U-shaped steel sheet pile is disposed in two layers is used. -37-(34) 1269823. The box type steel sheet pile 3 1 ' shown in Fig. 6 has the shapes of the joints 3 2, 3 3 at both ends of the left and right sides being asymmetric, and the cross sectional shape is formed to be linearly coupled in the same direction, at both ends. In the vicinity of the joint portion, the flat portion 34 is formed in the same direction as the flushing line, and one of the hook-shaped joints 3 2, 3 3 that are engaged with each other is formed inward, and the other ends formed outward are provided. The asymmetric U-shaped steel sheet piles of the joints 3 2, 3 3 are arranged in two back-to-back manners, and are welded together. The adjacent box-shaped steel sheet piles 3 Γ are sequentially joined while the joints 3 2 and 3 3 at both ends are fitted, and a steel wall A having a double-wall structure having a closed space b on the inner side is gradually formed. The method of discharging or automatically welding the soil sand and/or water in the closed space B is the same as in the case of the embodiment of Fig. 15. Fig. 17 is a view showing another example of the case where the steel material constituting the steel wall a is used, and the box-shaped steel sheet 椿 3 1" in which the asymmetric U-shaped steel sheet pile is disposed in two layers is used. 3 Γ, although the asymmetric U-shaped steel sheet piles are arranged in two back-to-back joints and welded together, the box-type steel sheet piles 3 1" of the first seven-figure are arranged in two back-to-back joints. Asymmetrical U-shaped steel plate. The inter-pile fusion is integrated as a bismuth steel connecting the steel 3 1 c to improve the section rigidity. In other words, by increasing the length of the steel material connecting the asymmetric U-shaped steel sheet piles to increase the cross-sectional rigidity, the connecting steel material 3 1 c is used to increase the torsional rigidity by using the steel, and the occurrence of the welding deformation can be reduced, so that the production becomes easily. -38 - (35) 1269823 Fig. 18 is a view showing another embodiment in which the steel material constituting the steel wall A of the present invention is used, and the box type steel sheet pile 4 1 in which the linear steel sheet pile is double-layered is used. In the example, the two-claw type linear steel sheet pile which is disposed in a double layer and the thick plate-shaped connecting steel material 4 1 c which is connected thereto are integrated by welding. Fig. 19 is a view showing a steel material constituting the steel wall A, which has a tubular female joint provided with a slit at both ends of the flange portion of the steel material having a meandering cross section, and a box-shaped steel sheet pile fitted to the male joint thereof. An embodiment of the case of 4 1 '. Similarly, Fig. 20 shows a steel material constituting a steel wall sill, and is combined with a steel sheet pile 4 1 ′ which is integrally formed by welding two pieces of U-shaped steel sheet piles which are back-bonded to each other, and a general U An embodiment of the case where the joints of the steel sheet piles 1 1 " are mutually connected. However, in the above-described embodiments of Figs. 15 to 20, a plurality of box-type steel sheet piles are previously welded to form components on the land, and those which are connected to each other may be connected. (2) is a steel material having a flat portion in the vicinity of the joint portion, and an example of a construction procedure in which the asymmetric U-shaped steel sheet pile 1 shown in Fig. 22 is applied to the land is displayed by a flowchart, and the following The program is working. (1) The construction of the steel wall A (one heavy wall) of the steel sheet pile 1 is started from any part of the steel wall A according to the construction capacity and the number of used steel sheet pile punching machines (Fig. 21a). At this time, it is generally set so that the lower end of the steel sheet pile 1 reaches the water-blocking layer. (2) The joint portion of the steel wall A: near the T is controlled to the water-blocking layer, and the closed space of the closed field B is secured by discharging the soil sand or water. In the case of the size of the space (horizontal area X vertical depth) in which the water-blocking material 5 1 can be inserted and the subsequent welding operation can be ensured, the size of the field B can be ensured. However, at this time, it is not necessary to completely remove the water in the closed field B. (3) Next, covering the joints 2 and 3 of the steel sheet pile 1 by (1), and the lip-shaped groove-shaped steel of the water-stopping material 5 1 and the joints 2 and 3 provided in the steel sheet pile 1 The locking portion 1 r of the flat portion 4 is engaged and inserted into the closed region B (Fig. 21c). If necessary, rush to the soil. (4) After that, in order to prevent the water in the joint water-stopping area C surrounded by the water-stopping material 51 and the steel sheet pile 1 from entering the closed field B, the stagnation in the joint water-stopping field C is prevented. The water inside is continuously discharged by a pump or the like (Fig. 21). In addition, in order to prevent water from entering from the outside of the closed field B through the joint portion J, a filling material such as plaster is put into the joint water stop field C surrounded by the water stopping material 5 1 and the steel sheet pile 1 (second 1 picture d'). Further, it was confirmed that the water was infiltrated from the joint water stop area C toward the upper closed field B by the input of the filling material. Specifically, it is sufficient to confirm the change in the water level in the closed field B. (5) After that, in each of the closed fields B provided in the vicinity of the joint portion J of the steel sheet pile 1, the internal water (including soil sand depending on the situation) is drained by a pump or the like (Fig. 21). However, in the case of the process of (4), it is also possible to implement the process of (5) in parallel. (6) It is confirmed that water is not infiltrated from the outside to the closed region B. The gap between the water-stopping material 5 1 and the steel sheet pile 1 is welded by an automatic fusion machine (No. -40-(37) 1269823 2 1 Figure f). The symbol 7 of the 2 3 ( a ) to (d ) diagram shows the fusion portion. The figure 2 3' is a shape example of the water-stopping material 5 1 which does not constitute the joint portion of the steel wall A covering the steel material, and the second 3 (a) is a general case of the lip-shaped groove-shaped steel. , Fig. 2 3 (c) is the case of the lip-shaped grooved steel having the outward lip portion 5 1 r', and the second 3 (b) is the net portion of the lip-shaped groove-shaped steel is formed into a mountain shape The special shape of the lip-shaped profile. Further, although not shown, a circular or semi-circular shape may be employed. Figure 23 (d) is a water-stopping material. In the vicinity of the joints 2 and 3 of the steel materials that are connected to each other, the mountain-shaped steels 5 1 ' and 5 1 ' are welded in advance, and the steel is punched. The front end portions of the Γ, 5 1 ′′ are superposed, and the joint water stop field C is formed on the inner side. In this case, in the closed field B, the portion where the tip end portion of the mountain-shaped steel 5 P ' 5 1 " which is the water-stopping material is superposed is continuously welded without a gap in the longitudinal direction, and the water can be completely blocked. However, in the mountain shape In the overlapping portion of the steel 5 1 ', 5 1 ", as needed, there is also a case where a water sealing material is interposed. As the water-stopping sealing material, for example, a water-stopping rubber or a water-swellable resin coating material can be used. Fig. 24 is a view showing another example of the steel material of the asymmetric U-shaped steel sheet pile 1, characterized in that the left and right joints 2, 3' have the inner claw (inward projection 2a) and the outer claw (outward). The double-layered claw formed by the protrusion 3c). However, the heights of the protrusions 2a, 3c (the inner and outer claws) in the figure, -41 - (38) 1269823, can be formed if they are not restrained from rotating, and the joints 2, 3 can be formed regardless of the height shown. Furthermore, the lowermost end of the inward joint 2b, which is described in the flat portion 4 of the joints 2, 3', and the outwardly located position of the joints 2, 3 are not hindered. An embodiment showing the scope of the patent application section is characterized in that the asymmetrical joints 2 and the three piles 1 are connected in a row, and the joint fitting portion is welded. In this example, the base portion of the asymmetric U-shaped steel sheet pile 1 is formed. For the rotation of the joint portion, the base portion on the side of the outer joint 3 forms an inwardly projecting joint 2 and an outward joint] the pile 1 and the protrusion of the outer side surface 3b on the side of the outer joint 3 2 a Burning A without gaps in the longitudinal direction has high water repellency. The method of constructing the steel wall A may be a method in which the pile 1 in the water is fitted to the joints 2 and 3 one by one, and the plurality of steel sheets may be piled and welded together to prepare a plurality of pieces. After the fitting g and/or the ground, the joints 2 and 3 are welded to the steel wall A, and have the second and third sides as shown in Fig. 26 (Fig. 26(a) shows the state in which the plurality of links are connected. In the plan view, the feature of the joint shape of the steel sheet pile 1 of Fig. 26 (b) large figure is easily lowered. The J position can be set even if it is not at the top of the joint 2 a. The asymmetrical U-shaped steel plate of the steel wall of 1 1 and 1 2 forms the steel wall A. The inwardly facing projection 2a of the inward joint 2 is in the rising portion 3a. ί and connect the plurality of steel plates and the inward joint 2 side ί, so that the steel wall and/or the ground plate can be tv, and the joint 1 is welded to the joint by the joint. 2, 3 and the method of flushing into the water is also possible. The asymmetric joint shown in the drawing, the steel sheet pile 1 is expanded by the joint fitting portion, and the applicant is for the left and right asymmetrical joints 2, 3 as shown in Fig. 26 for the -42-(39) 1269823. In the fitting portion, as shown in Fig. 27, the outer side surface 3b of the outer joint 3 and the inward projection 2a are continuously welded in the longitudinal direction of the steel sheet bundle 1, and in the case of the second As shown in the figure, in the case where the rising portion 3 a projecting inward from the base portion on the side of the outward joint 3 and the outer side surface 2 b of the inward joint 2 are continuously welded in the longitudinal direction of the steel sheet pile 1 , Get the following knowledge. The fusion stability of the former is as shown in Fig. 27(a) between the outer side surface 3a of the outer joint 3 and the inward projection 2a, and the weld bead having no gap is relatively easy to form, and this portion can be obtained. Water repellency. On the one hand, the fusion of the latter is unstable, as shown in Figs. 28(b) and 28(c), the rising portion 3a protruding inward from the base on the side of the outward joint 3, or In either of the outer side faces 2b of the inner joint 2, the welding arc is welded in a state of being displaced, and the welded bead 5a, 5b is formed in any of the above. Therefore, in the case where the longitudinal direction of the steel sheet pile 1 is continuously welded, if the welding speed is lower than that of the former, the base portion on the side of the outward joint 3 is inwardly and protruded from the protruding portion 3a and It is difficult to form the welded bead without gaps between the outer side faces 2b of the inward joint 2 and to form watertight. And, compared with the former, welding. The shape of the bead is a shape that becomes a relatively large protruding outer surface. The reason for this phenomenon is that in the former case, the opening angle formed by the outer side surface 3b of the outer joint 3 and the inward projection 2a is an acute angle (90° not full) of Fig. 27(a), In the latter case, the base portion on the outward joint 3 side has an opening angle 3a projecting inward and an opening angle formed by the outer side surface 2b of the inward joint -43-(40) 1269823 2 as in the first 2 8 ( a ) The obtuse angle of the graph (larger than 90°). However, in the case where the welding method of the non-consumption electrode type in which the TIG or the plasma arc is welded is applied to the fusion of the outer side surface 3b of the outer joint 3 and the inward projection 2a, the projection 2a is melted without using a welding material and welded to the outside. On the side surface 3 b, the protrusion 2 a and the outer side surface 3 b may be melt-integrated together (not shown). Fig. 29 is a view showing another embodiment of the steel wall A of the first application of the patent application. In the same manner as the embodiment of Fig. 5, the asymmetric U-shaped steel plate having the asymmetric joints 2 and 3 is used. After the 椿1 is connected in one row, the joint fitting portion is welded to form the steel wall A. In contrast to the embodiment of Fig. 25, in the embodiment of Fig. 29, the outward joint 3 side is also formed with the rising portion 3a to form an outward projection for the rotation of the restraining joint portion. 3c, in the state in which the joints 2, 3 are engaged, the outer side surface 3b on the side of the outer joint 3 and the projection 2a on the side of the joint 2 inward are welded in the longitudinal direction without gaps. The welded portion in this case may be between the outward projection 3c and the outer side surface 2b of the inward projection 2, except for the illustration. Further, in any of the embodiments of Figs. 25 and 29, the projection 2a or the projection 3c is also capable of restraining the rotation of the joint portion, and the joints 2, 3 are not easily detached from each other, for example, than the illustrated one. The lower ones can also. Further, the positions of the flat portions 4 of the joints 2, 3 are not the lowermost end of the inward joint 2 and the uppermost end of the outward joint 3 as shown, as long as the fitting of the joints 2, 3 is not hindered. If there is no special limit -44- (41) 1269823. Fig. 30 (a) and (b) show an embodiment of a steel wall showing the scope of claim 13 of the patent application. These are an asymmetric U-shaped steel sheet pile 1 having an asymmetrical joint 2' 3 of 2 After the column connection, the asymmetrical U-shaped steel sheet piles 1 are welded to the joint fitting portions in a state in which the outermost edges of the sheet pile walls face each other in the inward direction, thereby forming a steel niche. Fig. 30 (a) shows that the two columns of the sheet pile walls are close to each other, and Fig. 30 (b) shows the two columns of the sheet pile walls separated from each other. In the construction method of the steel wall, it is generally possible to flush each column into the water and/or the ground, and if possible, the steel walls of the two rows may be simultaneously rushed into each other. In this case, the two sides of the pair of steel walls that are flushed into the water and/or in the ground form a closed space that is isolated from the outside, so that the part that is flushed into the ground is dug, and the joint fitting is eliminated. The welding construction of the joint fitting portion after the soil sand of the portion and its peripheral portion can be facilitated. Further, after the water-repellent treatment, the closed space is used for monitoring or repairing the joint welded portion because it is blocked from the outside. Fig. 3 (a) and (b) show other embodiments of the steel wall A of claim 13 of the patent application, which are two asymmetrics having asymmetric joints 3 2, 3 3 The U-shaped steel sheet piles are connected to each other in a state in which the outermost edges of the sheet pile walls are opposed to each other in the inward direction, and the welded joints of the steel sheets or the steel plates are connected in a row, and the welded joint fitting portion is welded. It forms a steel niche with excellent water repellency. Fig. 31 (a) shows a case of a box type -45- (42) 1269823 steel sheet pile 3 1 in which two asymmetric u-shaped steel sheet piles are directly welded together, and Fig. 31 (b) is a transmission connection. Steel 3 1 c Η-shaped steel welded jointed box-type steel sheet pile 3 i,. In this case, since the water in the steel sheet pile and/or the rush A in the ground are simultaneously performed, the construction (rushing) energy rate is improved, and the steel sheet pile 1 is washed into the water and/or after the ground. Since the interval between the two can be kept constant, it is suitable for the introduction of the mobile welding machine as shown in Fig. 34, and the efficiency of the welding construction of the joint fitting portion can be achieved. And, as in the case of the embodiment of Fig. 30, since a closed space that is isolated from the outside is formed, the portion that is flushed into the ground is dug, and the soil of the joint fitting portion and its peripheral portion is removed. It is possible to facilitate the welding construction of the subsequent joint fitting portion. Further, since the closed space is blocked from the outside after the water-shielding treatment, it can be used for the purpose of monitoring or repairing the joint welded portion. Fig. 3 is a view showing another embodiment of the steel wall A of Patent Application No. 13 in which two linear steel sheet piles having an asymmetrical joint of the flange portion 3 1 f are applied to the sheet pile wall. In the form in which the outermost edges face each other in the inward direction, the box-shaped steel sheet piles 3 1 which are welded through the steel sheets of the mesh portion 3 1 w are connected in a row, and the joint fitting portions are welded to form a steel wall A 〇 In this case, as in the case of the third embodiment, the flushing into the water in the steel sheet pile and/or in the ground is performed substantially simultaneously, so that the construction (bursting) energy rate is improved because Keep the spacing between the steel sheet piles in the water and/or the ground into a fixed position. The introduction of the mobile welding machine as shown in Fig. 34 can achieve the efficiency of welding of the joint fitting -46 - (43) 1269823. Moreover, since the closed space that is isolated from the outside is formed, the portion that is flushed into the ground is cut out. By removing the soil sand of the joint portion and the peripheral portion thereof, the welding of the subsequent joint fitting portion can be facilitated. . Further, after the water-repellent treatment, since the closed space is blocked from the outside, it can be used for monitoring or repairing the joint welded portion. However, the welding construction method of the above embodiment, as shown in FIG. 3 or FIG. 34, is a movable welding machine 8 which is capable of continuously welding a predetermined position by a predetermined welding speed in the longitudinal direction of the steel sheet pile, 9, it is best to use an automatic welding robot arm, which is more efficient in terms of construction energy rate, but it can also be welded by manual intervention. However, in Fig. 33, reference numeral 8a is a fusion torch, 8b is a traveling rail, 8c is a traveling roller, and in Fig. 34, symbol 9a is a fusion torch, and 9b is a conductive bow for adjusting the interval between fusion machines. , 9c is a positioning and walking roller. In addition, in order to eliminate the foreign matter such as soil sand embedded in the fitting portion, it is desirable to use the joint fitting portion of the mobile welding machine of the third embodiment or the fourth embodiment in order to eliminate the foreign matter embedded in the fitting portion. The function of sweeping the welding position, such as water or air. Fig. 35 is an embodiment of a steel sheet pile showing the fifteenth application patent range and the fifteenth application patent range, and the asymmetric U-shaped steel sheet pile 1 having the asymmetric joints 2 and 3 is connected in a row. Thereafter, the joint fitting portion is welded to form a steel wall A. In this example, the inward projection 2a is formed at the base of the inward joint 2 side of the asymmetric U-shaped steel sheet pile 1 -47-(44) 1269823, and the base portion on the outward joint 3 side is formed to protrude inward. The rising portion 3a. A part or all of the inward projections 2a are composed of a material 5c having a lower melting point than the other portions, and the inwardly connected joint 2 and the outward joint 3 are joined to each other to join the plurality of steel sheet piles 1 by The outer side surface 3b on the outer joint 3 side and the inwardly directed projection 2a on the joint 2 side are welded continuously without a gap in the longitudinal direction, so that the steel wall A has high water repellency. In the method of constructing the steel wall A, the joints 2 and 3 of the steel sheet pile 1 are applied one by one in water and/or in the ground, and the joints 2 and 3 may be joined together, and the plural may be prepared. The steel sheet pile 1 may be connected in advance by a joint portion and a plurality of joints, and the joints 2 and 3 may be fitted into the water and/or the ground, and then the joints 2 and 3 may be joined. The steel sheet pile of the patent application range No. 14 and the patent application category 15 has the joint shape characteristics of the steel sheet pile 1 of the asymmetric joints 2 and 3 as shown in Fig. 26, the applicant, In the fitting portion of the left and right asymmetrical joints 2, 3 as shown in Fig. 26, the outer side surface 3b of the outer joint 3 and the inward projection 2a are continuous without gaps in the longitudinal direction of the steel sheet pile 1. Engagement, in which almost all of the inward projection 2a is formed of a material 5c having a lower melting point than the other portions of the steel sheet pile 1 (Fig. 5(b)), and the inward projection 2a steel sheet pile 1 The other part of the same material case (Fig. 38 (a)) is compared with the two, the following knowledge can be obtained. However, at this time, the heating means is a plasma arc welding device using one of the non-consumable electrode type gas-tight gas-48-(45) 1269823 sealed arc welding, and the method of heating the inwardly protruding protrusion 2a in the atmosphere . The former (Fig. 3) is such that the joining material (low melting point material 5c) is melted before the base material starts to melt, and it is relatively easy to make it between the outer side surface 3b of the outer joint 3 and the inward projection 2a. The bonding material is filled without a gap and has water repellency. On the other hand, in the latter (Fig. 38), the inward projection 2a and the base material are the same material (steel material), and since the projection has a high melting point, the distance from the direction of the arc for heating or the projection 2a may cause the The molten state of the projection 2a is changed, and as shown in Fig. 3(b), a portion where the joint is defective depending on the position in the longitudinal direction of the joint portion (formed between the outer side surface 3b of the outer joint 3 and the inward projection 2a) The gap of the extent to which water can enter). Alternatively, depending on the direction of the arc, the distance of the projection 2a, or the amount of heat input, although not shown, there is a problem that the root portion of the inward projection 2a or the outer joint 3 is cut off. Therefore, in the case where the longitudinal direction of the steel sheet pile 1 is continuously joined, it is necessary to accurately hold the position and angle of the arc, and the amount of heat input is appropriately adjusted, and the joint speed does not fall to a level lower than that of the former (Fig. 35). In this case, the problem at the time of the above-mentioned joining cannot be avoided, and it is extremely difficult to bond the outer side surface 3b of the outer joint 3 and the inward projection 2a to each other without a gap. Although the above is based on the results of the joint joining test in the atmosphere, it is easier to solidify in the water than in the atmosphere because the molten member absorbs heat from the surrounding water. - (46) 1269823 It is necessary to increase the heat input of the heating arc. In the case where a joint is joined in water by a part or all of the protrusions without using a low-melting point material, the problem of the flange opening of the steel sheet pile or the joint portion is easily caused, and the invention of the present invention Steel sheet piles are best joined in water. Fig. 3 is a view showing another embodiment in which only the outer side surface 3b of the outward joint 3 and the inward projection 2a are joined when a part of the inward projection 2a is formed of the low melting point material 5c. Before and after the state. In the embodiment of Fig. 36, for the inward projection 2a, only the side opposite to the outward joint 3 is formed by the low melting point material 5c, but for example, the upper portion of the inward projection 2a is divided into several parts. It is also possible to form a low melting point material 5c. However, the method of integrating the protrusions 2a of the low-melting-point material 5c inward as shown in Fig. 3 6 (a) is a method of bonding agents, or an appropriate method after the end-of-heat rolling of the steel sheet pile 1 is completed. At the temperature of the base material, the low-melting point material 5c is cast into a predetermined shape at a predetermined position, and then cooled and hardened. Fig. 37 is a view showing another method of replacing a part of the inward projection 2a with the low melting point material 5c, and preparing a portion of the low melting point material 5c (hot melt material) to form the inward projection 2a in advance. In the case of all the shapes, the steel sheet pile of the base material may be formed such that the inward projection 2a can be fitted into the cartridge structure, for example, and the two can be fitted and integrated. The bonding agent may be applied in advance to the fitting surface, or the two may be fitted together and then fixed by a bolt (not shown) or the like. -50- (47) 1269823 Figure 39 is another embodiment of a steel sheet pile showing the fifteenth aspect of the patent application of the present invention. As in the case of the embodiment of Fig. 5, there will be an asymmetric joint 2 The asymmetrical U-shaped steel sheet piles 1 of 3 and 3 are connected in a row, and the joint portion is welded to form a steel wall A. Unlike the embodiment of Fig. 35, in the embodiment of Fig. 39, the outward joint 3 side is also formed with an outward projection 3c' between the rising portion 3a and the joint. In the state of 2 and 3, the outer side surface 3b on the side of the outer joint 3 and the projection 2a on the side of the joint 2 on the inward side are welded in the longitudinal direction without gaps. The weld of this case may be between the outward projection 3c and the outer side surface 2b of the inward projection 2, in which case a part or all of the outward projection 3c is The other part of the low melting point material 5 c is composed. Further, the embodiment of Fig. 39 is also a modification similar to the Figs. 36 and 37 of the embodiment of Fig. 5, that is, for the outward projection 3c, only the inward and the inward The pair of tabs 3 are formed by a low melting point material, or a fraction of the lower portion of the outward projection 3c is formed of a low melting point material, or a low melting point material is prepared in advance to form an outward projection 3 Part or all of the shape of e, base metal. The steel sheet pile may be formed in such a manner that the outward projection 3c is fitted and fitted by, for example, a pill box, and the two are fitted and integrated. Further, in any of the embodiments of FIGS. 5 and 39, the protrusion 2a or the protrusion 3c can also restrict the rotation of the joint portion, and the joints 2 and 3 are not easily separated from each other, for example, a map. It can be shown as the lower one. -51 - (48) 1269823 Further, the positions of the flat portions 4 of the joints 2, 3 are not only the lowermost end of the inward joint 2 as shown but the uppermost end of the outward joint 3, for the joints 2, 3 The position where the fitting does not hinder is not particularly limited. In an embodiment of Fig. 40, after the asymmetric U-shaped steel sheet piles 1 having the asymmetric joints 2, 3 are connected in two rows, the asymmetric U-shaped steel sheet piles 1 are mutually oriented with respect to the outermost edges of the sheet pile walls. In the state in which the inner direction is opposed to each other, the joint fitting portions are joined to form the steel wall A. Fig. 40(a) shows that the two columns of the sheet pile walls are close to each other, and Fig. 40(b) shows the two columns of the sheet pile walls separated from each other. In the construction method of the steel wall, it is generally possible to arrange each of them in water and/or in the ground. If possible, it is also possible to simultaneously construct the steel walls of the two rows in a state of being separated from each other. This feature is characterized in that the steel wall which is disposed in the water and/or in the ground in two rows forms a closed space which is isolated from the outside, and the part which is placed in the ground is dug, thereby eliminating the joint insertion. The soil sand at the joint portion and the peripheral portion thereof can facilitate the joining construction of the joint fitting portion at a later time. Further, since the closed space is blocked from the outside after the water-shielding treatment, it can be used for the purpose of monitoring or repairing the joint joint portion. Fig. 4 (a) and (b) show other embodiments in which two asymmetric U-shaped steel plates having asymmetric joints 2, 3 are mutually mutually opposite to the outermost edges of the respective sheet pile walls. In the inward direction of the squatting state, through direct welding or steel such as steel or steel. After the box-type steel sheet piles in which the materials are welded together are connected in one row, the joint fitting portions are joined to form a steel wall A having excellent water repellency of -52-(49) 1269823. Fig. 41 (a) shows a case of a box-shaped steel sheet pile 3 1 ' in which two asymmetric U-shaped steel sheet piles are directly welded to each other, and Fig. 41 (b) shows a state in which the steel material 3 1 c is transmitted. In the case of a box-shaped steel sheet pile 3 1 " in which the steel is welded together, the construction of the steel sheet pile in the water and/or in the ground is carried out at substantially the same time, so the construction (punching) energy rate In addition to the increase, the gap between the steel sheet piles disposed in the water and/or in the ground can be kept fixed, and is suitable for the introduction of the mobile bonding machine 8' as shown in Fig. 43, and the joint construction of the joint fitting portion can be achieved. Further, as in the case of the embodiment of Fig. 40, since a closed space isolated from the outside is formed, the portion of the joint fitting portion and the peripheral portion thereof is removed by excavating the portion to be grounded in the ground. In addition, it is easy to join the subsequent joint fitting portion. Further, since the closed space is blocked from the outside after the water-shielding treatment, it can be used for monitoring or repairing the joint joint portion. Figure, is showing other real In the embodiment, the two straight steel sheet piles having the asymmetrical joint of the flange portion 31f are welded to each other in the form of facing the outermost edges of the sheet pile walls in the inward direction, and the steel sheets passing through the net portion 3 1 w are welded together. After the box-shaped steel sheet piles 3 1 are connected in one row, the joint fitting portions are joined to form the steel wall A. In this case, as in the case of the embodiment of Fig. 4, the water in the steel sheet pile and/or Since the construction in the ground is carried out at substantially the same time, the energy rate of the construction (bursting) is increased, and the steel sheet piles placed in the water and/or in the ground are spaced apart from each other because they can be kept fixed, as in the 43-53. - (50) 1269823 The introduction of the mobile bonding machine 8' shown in the figure can achieve the efficiency of the joint construction of the joint fitting portion. Moreover, since the closed space is isolated from the outside, it is constructed in the ground. Partial excavation, the soil sand of the joint fitting portion and the peripheral portion thereof is eliminated, and the joint construction of the joint fitting portion can be facilitated. Further, since the closed space is blocked from the outside after the water blocking treatment, So it can be used for joints The use of the monitoring or repairing of the part. However, the welding construction method of the above embodiment, as shown in Fig. 43 or Fig. 44, is possible to continuously weld the predetermined position by a predetermined welding speed in the longitudinal direction of the steel sheet pile. The mobile welding machine 8 ', 9 ' preferably uses an automatic welding robot arm, which is more efficient in terms of construction energy rate, but can also be welded by manual intervention. Moreover, the use example is shown in Fig. 43 or Fig. 44. The welding of the joint fitting portion of the mobile welding machine is intended to eliminate foreign matter such as soil sand embedded in the fitting portion, and it is desirable to have a function of sweeping the welding position by water or air before welding. [Fig. 1] A diagram showing an example of a construction procedure of the present invention (corresponding to the first item of the patent application) when a steel sheet having a joint and a temporary steel material are used as a steel sheet pile is shown in a flowchart. [Fig. 2] In the first item of the patent application, the steel material constituting the steel wall is a plan view of an embodiment in the case of using a U-shaped steel sheet pile. [Fig. 3] In the first item of the patent application, the steel -54-(51) 1269823 material constituting the steel wall is a plan view of an embodiment in the case of using an asymmetric U-shaped steel sheet pile. [Fig. 4] In the first aspect of the patent application, the steel material constituting the steel wall is a plan view of an embodiment in which a steel material in which a crown steel and an asymmetric U-shaped steel sheet pile are integrated is used. [Fig. 5] A plan view of an embodiment in which a steel material constituting a steel wall is a straight steel sheet pile and a shield member is used (corresponding to the second item of the patent application). [Fig. 6] A steel sheet having a joint is an example of a construction procedure of the present invention (corresponding to the third item of the patent application) in the case of using a box type steel sheet pile, which is applied to a seawater region, and is not shown in the flowchart. [Fig. 7] In the third aspect of the patent application, the steel material constituting the steel wall is a plan view of an embodiment in which a box type steel sheet pile in which a linear steel sheet pile is disposed in two layers is used. [Fig. 8] In the third aspect of the patent application, the steel material constituting the steel wall is a plan view showing an embodiment of a case of using a box-shaped steel sheet which is disposed in two layers with an asymmetric U-shaped steel sheet pile. [Fig. 9] In the third aspect of the patent application, the steel material constituting the steel wall is a plan view of another embodiment in the case of using a box type steel sheet pile in which an asymmetric U-shaped steel sheet pile is disposed in two layers. [Fig. 1] In the third item of the patent application, the steel material constituting the steel wall is a plan view showing an embodiment in which the U-shaped steel sheet pile is double-layered. [Fig. 1] A plan view of an embodiment in which a sheet-like elongated member is provided outside the joint portion to -55- (52) 1269823 to improve water repellency. [Fig. 1 2] A plan view showing an embodiment in which a rod-shaped elongated member is provided inside the joint portion to improve water repellency. [Fig. 1 3] A plan view of another embodiment in which a rod-shaped elongated member is provided inside the joint portion to improve water repellency. [Fig. 14] A schematic flowchart of a method of manufacturing a steel wall according to the eighth and first aspects of the patent application of the present application. [Fig. 15] An embodiment of the steel wall of the fifth to seventh aspects of the patent application of the present invention, wherein (a) is a plan view and (b) is a detailed enlarged cross-sectional view of the main part. [FIG. 1 6] A plan view of another embodiment of the steel wall of the fifth to seventh aspects of the patent application of the present application. [Fig. 17] A plan view of another embodiment of the steel wall of the fifth to seventh aspects of the patent application of the present application. [Fig. 18] A plan view of another embodiment of the steel wall of the fifth to seventh aspects of the patent application of the present application. [Fig. 19] A plan view of another embodiment of the steel wall of the fifth to seventh aspects of the patent application of the present application. [Fig. 2] The steel wall of the patent application scope 5~7 of this case. A plan view of another embodiment. [Fig. 2] A schematic flowchart of a method for producing a steel wall according to the ninth and first aspects of the patent application of the present application. [Fig. 2] Fig. 2 is a view showing the positional relationship between the steel wall body and the closed region of the embodiment of the method for producing a steel wall according to the ninth aspect of the patent application of the present invention. [56] [Fig. 3 0] An embodiment of the sheet pile type steel wall of claim 13 is that (a) the two rows of sheet pile walls are close to each other, and (b) that the two rows of sheet pile walls are separated from each other. Happening. [Fig. 3] Fig. 3 is a plan view showing another embodiment of the sheet pile type steel wall of the third aspect of the patent application, wherein (a) is a case where two U-shaped steel sheet piles are directly welded and integrated with each other, (b) It is a case where the fusion of the bismuth steel is integrated. [Fig. 3] Fig. 3 is a plan view showing another embodiment of the sheet pile type steel wall of the claim 13th. [Fig. 33] A plan view showing an example of a welding method using a joint fitting portion of a mobile welding machine. [Fig. 34] Fig. 34 is a plan view showing another example of a welding method using a joint fitting portion of a mobile fusion splicer. [Fig. 3] An embodiment of the steel sheet pile of the first and fourth aspects of the patent application of the present application, (a) is a plan view showing a state in which steel sheet piles having asymmetric joints are connected, (b), (c) It is an enlarged view of the main part of the joint. [Fig. 36] (a) and (b) are plan views of essential parts of the joint of the other embodiments of the steel sheet piles of claims Nos. 14 and 15. [Fig. 37] (a) and (b) are explanatory views of an example of a method of replacing a part of the protrusion in the inner direction with a material having a low melting point. [Fig. 3] (a) and (b) are explanatory views of the problematic bonding state of the comparative example. -58- (55) 1269823 [Fig. 3] Another embodiment of the steel sheet pile of the first and fourth aspects of the patent application of the present application, (a) is a state in which steel sheet piles having asymmetric joints are connected. The plan view, (b) and (c) are enlarged views of the main part showing the appearance of the joint. [40] Fig. 40 is a plan view showing an embodiment of a steel wall of a steel sheet pile according to the first and fourth aspects of the patent application, wherein (a) is a case where the two column pile walls are close to each other, and (b) is 2; The columns of the sheet piles are separated from each other. [Fig. 4] Fig. 4 is a plan view showing another embodiment of a steel wall of a steel sheet pile according to the first and fourth aspects of the patent application, (a), in which two asymmetric U-shaped steel sheet piles are directly welded together. (b) is the case where the fusion of the stell-shaped steel is integrated. [Fig. 42] A plan view showing another embodiment of the steel wall of the steel sheet pile according to the fourteenth and fifteenth aspects of the patent application. [Fig. 43] A plan view showing an example of a joining method of a joint fitting portion using a movable bonding machine. [Fig. 44] Fig. 44 is a plan view showing another example of a joining method of a joint fitting portion using a movable bonding machine. [Fig. 45] A horizontal sectional view showing an example of a water stop wall of a U-shaped steel sheet pile of a conventional example. [46] Fig. 46 is a plan view showing an example of a water stop wall using a steel pipe sheet pile of a conventional example. [Description of the figure] ΑSteel wall -59- (56) (56)1269823 B Closed field C joint water stop area D Temporary steel wall J welding target joint part j joint part (temporary part of temporary steel sheet pile) Si sheet-like strip member S2 rod-shaped strip member 1 asymmetric U-shaped steel sheet pile Γ asymmetric U-shaped steel sheet pile 1 c-linked steel 1 r-locking portion
It暫設鋼板樁 2向內接頭 2a向內突起 2 b外側面 3向外接頭 接頭 3 a立起部 3 b外側面 3 c向外突起 4扁平部 5熔接 5 a、5 b熔接焊道 5c低融點材料 -60- (57) (57)1269823 5d熔接 6熔接部 7熔接部 7 ’熔接部 8、9移動熔接機 8’移動式接合機 8’、9’移動接合機 8 a熔接吹管 8b行走用軌道 8c行走用滾子 9移動式熔接機 9’移動式接合機 9a熔接吹管 9a’熔接吹管 9b熔接機間間隔調整用導電弓 9c定位兼行走用滾子 1 1 U型鋼板樁 1 1” U型鋼板樁 lit暫設鋼板樁 2 1直線型鋼板樁 2 1 c連結鋼材 2 1 s遮蔽構件 21t暫設鋼板樁 3 1盒型鋼板樁 -61 - 1269823 (58) 3 Γ盒型鋼板樁 3 1 ”盒型鋼板樁 3 1 c連結鋼材 3 1 f凸緣部 3 1 r 卡止部 3 1 w網部 3 2、3 3非對稱接頭 3 4扁平部 3 6卡止部 4 1盒型鋼板樁 4 Γ盒形鋼板樁 4 1"鋼板樁 4 1 c連結鋼材 5 1止水用形材（附唇緣溝形鋼） 5 1 ’、5 1 ”山形鋼 5 1r唇緣部分 5 lr’向外唇緣部分 5 2、5 3止水用形材（山形鋼） 6 1 U字型鋼板樁 6 2接頭 63止水壁結構體 64接頭 6 5 地盤改良 7 1鋼管板樁 -62- (59) 1269823 7 2公接頭材 73母接頭材 74 、 75翼部 75翼部 7 5 a腳部 76熔接It temporary steel sheet pile 2 inward joint 2a inward projection 2 b outer side 3 outer joint joint 3 a rising portion 3 b outer side surface 3 c outward projection 4 flat portion 5 welded 5 a, 5 b welded bead 5c Low melting point material -60- (57) (57)1269823 5d welding 6 welding joint 7 welding portion 7 'welding portion 8, 9 moving welding machine 8' mobile bonding machine 8', 9' moving bonding machine 8 a welding torch 8b travel track 8c travel roller 9 mobile welding machine 9' mobile joint machine 9a weld blow pipe 9a' weld blow pipe 9b welder interval adjustment conductive bow 9c positioning and travel roller 1 1 U-shaped steel sheet pile 1 1" U-shaped steel sheet pile lit steel plate pile 2 1 linear steel sheet pile 2 1 c joint steel 2 1 s shielding member 21t temporary steel sheet pile 3 1 box type steel sheet pile -61 - 1269823 (58) 3 Γ box type steel plate Pile 3 1 ” Box type steel sheet pile 3 1 c Connection steel 3 1 f Flange part 3 1 r Locking part 3 1 w Net part 3 2, 3 3 Asymmetric joint 3 4 Flat part 3 6 Retaining part 4 1 box Steel sheet pile 4 Γ box-shaped steel sheet pile 4 1" steel sheet pile 4 1 c joint steel 5 1 water-stop shape (with lip-edge grooved steel) 5 1 ', 5 1 ” mountain-shaped steel 5 1r lip 5 lr' outer lip part 5 2, 5 3 water stop shape (mountain steel) 6 1 U-shaped steel sheet pile 6 2 joint 63 water stop structure 64 joint 6 5 site improvement 7 1 steel pipe sheet pile -62- (59) 1269823 7 2 male connector material 73 female connector material 74, 75 wing portion 75 wing portion 7 5 a foot portion 76 welded