JP3806813B2

JP3806813B2 - Building and its construction method

Info

Publication number: JP3806813B2
Application number: JP12523998A
Authority: JP
Inventors: 真根本; 進金田; 雅路青木; 恭幸柴田; 英二佐藤
Original assignee: Takenaka Corp
Current assignee: Takenaka Corp
Priority date: 1998-04-20
Filing date: 1998-04-20
Publication date: 2006-08-09
Anticipated expiration: 2018-04-20
Also published as: JPH11303110A

Description

【０００１】
【発明の属する技術分野】
この発明は、建物及びその構築方法、特に、建物の周囲の少なくとも一部に傾斜山留壁を備えた建物及びその構築方法に関する。
【０００２】
【従来の技術】
従来の山留壁の施工方法には、例えば、図１３に示されているように、軟弱地盤１の地表面２から地下構造体の構築に必要な深度Ｄまで、地下構造体の平面形状の外周に自立山止壁として必要な壁厚Ｔを加えた領域の全面に及ぶ土壌の部分３を深層混合処理手段７により地盤改良を施し、その後に地盤改良が施された部分３のうち地下構造体の構築に必要な２点鎖線で囲まれた部分４について場内進入の重機（例えば、油圧ショベル）によるオープンカツト方式によりドライワークとしの掘削を行い、地表面が壁厚Ｔの台形状の傾斜山留壁３ａ及び壁厚Ｔの垂直山留壁３ｂを構築する方法（例えば、特開平６−７３７２２号公報参照）がある。
【０００３】
【発明が解決しようとする課題】
従来の上記山留壁の施工方法は、地下構造体の平面形状の外周に自立山止壁の壁厚Ｔを加えた領域の全面について、地表面２から地下構造体の構築に必要な深度Ｄまで、深層混合処理手段７により地盤改良を行なってから、地下構造体の構築を行なう部分４を場内進入の重機（例えば、油圧ショベル）によるオープンカツト方式によりドライワークとして掘削を行なうものであるため、掘削が容易になるが、台形の傾斜山留壁の部分３ａの壁厚Ｔが地表面２から離れるに従って順次厚くなり、地盤改良をすべき土壌の体積が増大し、地盤改良の費用が嵩んでしまう欠点がある。
この発明の解決しようとする課題は、従来技術の上記のような欠点を有しない建物及びその構築方法を提供すること、換言すると、施工が容易で、山留壁を厚くしなくてすむ建物及びその構築方法を提供することにある。
【０００４】
【課題を解決するための手段】
この発明の建物は、建物が構築される箇所の地表面から所定の深度のところにコンクリート造の基盤、フーチング等の基礎が構築され、前記基礎の上側に地表面より下方に位置する下部分と地表面より上方に位置する上部分を備えた建物躯体が構築されて、地表面より下方に位置する建物躯体の下部分の周囲に該下部分に対して間隔をおいて山留壁が形成されている建物において、前記山留壁の一部又は全部がソイルセメント造の柱列式傾斜連続壁で構成され、該柱列式傾斜連続壁が鉛直線に対して建物躯体の下部分の外側に傾斜し、前記柱列式傾斜連続壁の柱列の隣接する柱同士が互いに一体化されていることを特徴とするものである。免震機能を備えた建物の場合には、前記基礎の上側に多数の免震装置が配置され、前記免震装置の上側に地表面より下方に位置する下部分と地表面より上方に位置する上部分とを備えた建物躯体が構築されて、免震装置が設置される部分を含む建物躯体の下部分の周囲に山留壁が形成されるようにする。
ソイルセメント造の柱列式傾斜連続壁の傾斜角度は、地盤の軟弱度によって決められるが、例えば、鉛直線に対して建物躯体の下部分の外側に８゜〜１６゜傾斜させるようにする。
必要に応じて、建物躯体の下部分に面する柱列式傾斜連続壁の面に接して本設のコンクリート造又はモルタル造の傾斜壁を構築する。
【０００５】
この発明の建物の構築方法は、建物を構築すべき地盤の部分の一部又は全部を囲むように山留壁を構築し、かつ建物を構築すべき地盤の部分に多数のコンクリート造の杭を設け、山留壁で囲まれた地盤を所定の深度まで掘削し、地表面から所定深度の所に杭頭と一体にコンクリート造の基盤、フーチング等の基礎を構築し、該基礎の上側に、地表面より下方に位置する下部分と地表面より上方に位置する上部分とを備えた建物躯体を構築する建物の構築方法において、前記山留壁の一部又は全部として、地表面より下方に位置する建物躯体の下部分の外側となる地盤中に、鉛直線に対して建物躯体の下部分の外側に略同じ角度傾斜した多数のソイルセメント造の柱からなる柱列式傾斜連続壁を構築した後に、前記柱列式傾斜連続壁を含む山留壁で囲まれた地盤部分を所定の深度まで掘削して前記基礎を構築することを特徴とするものである。
免震機能を備えた建物を構築する場合には、前記基礎の上側に、多数の免震装置を配置し、免震装置の上側に地表面より下方に位置する下部分と地表面より上方に位置する上部分とを備えた建物躯体を構築するようにする。そして、前記山留壁の一部又は全部として、免震装置が配置されている部分を含む建物躯体の地表面より下方に位置する下部分の外側となる地盤中に多数のソイルセメント造の柱を鉛直線に対して建物躯体の下部分の外側に略同じ角度傾斜させ、かつソイルセメント造の各柱の中心間の距離をその径よりも小さくし、隣接するソイルセメント造の柱同士を互いに一体化させてソイルセメント造の柱列式傾斜連続壁を構築した後に、前記柱列式傾斜連続壁を含む山留壁で囲まれた地盤部分を掘削して前記基礎を構築するものである。
なお、山留壁を構築してから杭を設け、または杭を設けてから山留壁を構築する。あるいは山留壁の構築と杭の造設とを並行して行なってもよい。
【０００６】
【実施例】
実施例は、図１〜図１２に示され、この発明を免震機能を備えた建物に適用した例である。
図１に示すよに、建物が構築される箇所の地盤中に多数のコンクリート造の現場打ち杭１１が設けられ、地表面ＧＬから深さＤ（例えば、２．８ｍ〜３．５ｍ）の所に杭頭と一体にコンクリート造の平らな基盤、フーチング等の基礎１２が構築され、基礎１２の上側に多数の積層ゴムからなる免震装置１３が配設され、免震装置１３の上側に建物躯体１４の下部分の免震装置１３の受け部１４ａが載設され、建物躯体１４は梁１４ｂ、柱１４ｃ、床１４ｄ等から形成されており、建物躯体１４の一階の床１４ｄの床面ＦＬが地表面ＧＬよりも少々高くなるように、前記深さＤが定められている。
建物の建物躯体１４の地表より下方の受け部１４ａや免震装置１３の収容空間Ｓｐ₁の周囲には、間隔をおいて傾斜山留壁となる柱列式傾斜連続壁１０が形成されている。柱列式傾斜連続壁１０は地盤を掘削して得られた土壌を硬化剤で硬化させて形成されている。柱列式傾斜連続壁１０は鉛直線に対して収容空間Ｓｐ₁の外側に傾斜（例えば、１０゜）している。柱列式傾斜連続壁１０は、その下方の部分が建物の周囲部の下方に位置する杭１１の近傍まで達する程度の長さになっている。
なお、建物躯体１４の周囲にはこれと一体に庇状の床１４ｅが構築され、この庇状の床１４ｅが柱列式傾斜連続壁１０と免震装置１３が設置される部分や受け部１４ａ等を含む建物躯体１４の下部分との間の隙間Ｓｐ₂の上方を覆うようになっている。
【０００７】
次に、柱列式傾斜連続壁１０の構築に使う装置類を説明する。
掘削泥練機２０は、図２及び図３に示され、３軸型であって、その頭部２１に吊部２１ａ、モータ２１ｂ、減速機２１ｃを備え、モータ２１ｂの回転を減速機２１ｃで減速して頭部２１に支持された３本の回転軸２２ａ，２２ｂ，２２ｃに伝え得るようになっている。中央の回転軸２２ａに掘削泥練軸２３が連結され、この掘削泥練軸２３は略全長にわたってスクリュ２３ａが設けられ、その先部にスクリョウ２３ｃと掘削刃２３ｂとが設けられている。そして、掘削泥練軸２３の略全長にわたって円筒型ケーシング２４が嵌められ、この円筒型ケーシング２４は頭部２１に一体的に結合し得るようになっている。掘削泥練軸２３の中心軸線と円筒型ケーシング２４の中心軸線とを一致させかつ掘削泥練軸２３の回転を許容する間隔保片２５が円筒型ケーシング２４内に設けられている。右側の回転軸２２ｂにその先部に撹拌翼２６ａと掘削刃２６ｂとを備えた掘削泥練軸２６が連結され、左側の回転軸２２ｃにその先部に撹拌翼２７ａと掘削刃２７ｂとを備えた掘削泥練軸２７が連結されている。
【０００８】
円筒型ケーシング２４と左右の掘削泥練軸２６，２７との間には間隔保持手段２８が設けられ、各掘削泥練軸２３，２６，２７がそれらの中心軸線を互いに平行に維持した状態でそれぞれ回転し得るようになっている。
掘削泥練機２０を吊り上げる吊上機３０として、図４に示されているようなクローラ式の走行装置３１の上部に設けた旋回装置付きの機体３２に、巻上機３３、テレスコープ型ブーム３４、ブーム起伏装置３５、運転室等を設けた移動式クレーンを使う。
そして、巻上機３３に巻き付けられかつブーム３４の先部から垂下されたロープ３３ａに付けた吊鈎３６を掘削泥練機２０の頭部２１の吊部２１ａに掛けて掘削泥練機２０を吊り上げ、掘削泥練機２０を昇降し得るようにする。なお、吊上機３０と掘削泥練機２０とで可動掘削泥練装置が構成される。
【０００９】
掘削泥練機２０の円筒型ケーシング２４を一定の傾斜角θに保って上下方向に案内する可動案内装置４０は、図４〜図６に示す構成を備えている。すなわち、機体４２がクローラ式走行装置４１の上部に旋回装置により旋回自在に取り付けられ、機体４２上にその一方の側に運転室４３が設けられ、アーム４４の基部が支軸４４ａにて機体４２の略中央に起伏自在に取り付けられ、アーム４４の先部が支軸４４ｂにて案内体４５の背部の突起部に回動自在に取り付けられ、アーム４４の先部と機体４２の略中央部との間に第１の伸縮式連結体４６が配され、第１の伸縮式連結体４６の基部が支軸４６ａにて機体４２に回動自在に取り付けられ、第１の伸縮式連結体４６の先部が支軸４４ｂにて案内体４５に回動自在に取り付けられている。アーム４４の下側に第２の伸縮式連結体４７が配され、第２の伸縮式連結体４７の基部が支軸４７ａにて機体４２に回動自在に取り付けられ、第２の伸縮式連結体４７の先部が支軸４７ｂにて案内体４５の背部の下方の突起部に回動自在に取り付けられている。
なお、伸縮式連結体４６，４７としては、例えば、シリンダと該シリンダ内にピストン付きのロッドを嵌装してなる油圧シリンダ装置を使う。
案内体４５は、例えば、横断面エ型の鋼製の主体４５ａで構成され、主体４５ａの前側のフランジ４５ａ₁に間隔をおいて主体４５ａの長手方向に伸びかつその中心軸線が地表面ＧＬを含む水平面に対して垂直な平面上に位置し得るように円形断面の棒状又は管状の長い案内片４５ｂ，４５ｂを取り付けて構成されている。長い案内片４５ｂの外側の略半分が横断面半円形状のカバー４５ｃで覆われている。なお、長い案内片４５ｂの代わりに、上記中心軸線上に間隔をおいて位置する複数の案内ローラを前記フランジ４５ａ₁に間隔をおいて２列設けるようにしてもよい。
必要に応じて、案内体４５の主体４５ａの下部の背面に受片４５ｄを取り付け、受片４５ｄの下面と地表との間に支持体（例えば、油圧式ジャッキ等）４６を配設して、掘削泥練機２０の円筒型ケーシング２４が係合している時の案内体４５の変位を防止するようにする。
【００１０】
次に、可動案内装置４０による掘削泥練機２０の円筒型ケーシング２４の案内の仕方等を説明する。図４及び７図に示すように、そのクローラ式走行装置４１が構築すべき柱列式傾斜連続壁１０の上面の中心線と並行になり、かつ可動案内装置４０の案内体４５の案内片４５ｂ，４５ｂの中心軸線の延長線上に構築すべき柱列式傾斜連続壁１０の外側面がくるような位置に、可動案内装置４０を移動させる。
そして、掘削泥練機２０を吊り上げる吊上機３０として、巻上機３３、テレスコープ型ブーム３４、ブーム起伏装置３５等を備えた移動式クレーンを使い、ブーム３４先から垂下されたロープ３３ａに付けた吊鈎３６を掘削泥練機２０の頭部２１の吊部２１ａに掛けて吊り上げ、掘削泥練機２０を吊り下げた状態にした吊上機３０を前記可動案内装置４０に近づけ、吊り下げた状態の掘削泥練機２０の円筒型ケーシング２４の下部の外周面を案内体４５の案内片４５ｂ，４５ｂに接触させ、可動案内装置４０の伸縮式連結体４６，４７を伸縮させて、掘削泥練機２０の円筒型ケーシング２４の中心軸線の傾斜角θが所定の傾斜角になりかつ前記中心軸線の延長線が柱列式傾斜連続壁１０の表面の中心線と一致するように調節する。
それから、掘削泥練機２０のモータ２１ｂを回転させて、掘削泥練軸２３，２６，２７を回転させながら、吊上機３０の巻上機３３を駆動して、巻上機３３に巻き付けられたロープ３３ａを繰り出し、ロープ３３ａに付けた吊鈎３６で吊り下げた掘削泥練機２０を降下させ、掘削泥練機２０の円筒型ケーシング２４を案内体４５の案内片４５ｂ，４５ｂに沿って下方に移動させ、掘削泥練軸２３，２６，２７の先の掘削刃２３ｂ，２６ｂ，２７ｂにて地盤を掘削する。
【００１１】
工事現場には、７図に示すように、セメントサイロ５１、ミキシングプラント５２、移送ポンプ５３等が設置されている。
構築すべき柱列式傾斜連続壁１０に所定の一軸圧縮強度を付与するため、現場土砂１ｍ³当の注入剤の量を、例えば、セメント２６０kg、ベントナイト１０kg、水３９０ｌとする。ミキシングプラント５２にて上記の配合割合、すなわち、セメント２６０kg、ベントナイト１０kg、水３９０ｌの配合割合の注入剤の調製し、移送管５４にて、掘削泥練機２０に供給する。
【００１２】
次に、傾斜山留壁となる柱列式傾斜連続壁１０の構築の仕方を説明する。
図１２の（ａ）に示すように、構築すべき傾斜山留壁の柱列式傾斜連続壁１０の平面視の中心線Ｃｌ上に間隔をおいて、３本のソイルセメント造の柱が互いに結合されている柱列式傾斜部分壁１０ａを構築し、その後に、図１２の（ｂ）に示すように、柱列式傾斜部分壁１０ａと柱列式傾斜部分壁１０ａとの間の隙間にそれぞれ対応させて３本のソイルセメント造の柱が互いに結合されている柱列式傾斜部分壁１０ｂを構築し、図１２の（ｃ）に示すように、柱列式傾斜連続壁１０とする。
【００１３】
上記柱列式傾斜部分壁１０ａ，１０ｂは、次のようにして造成する。
吊上機３０及び可動案内装置４０を、例えば、図４及び図７に示す状態になるように配置し、可動案内装置４０の伸縮式連結体４６，４７を伸縮させて、掘削泥練機２０の円筒型ケーシング２４の中心軸線の傾斜角θが所定の傾斜角になり、各掘削泥練軸２３，２６，２７の中心軸線の延長線が柱列式傾斜連続壁１０の地表の中心軸線ＣＬと一致するように調節してから、掘削泥練機２０のモータ２１ｂを回転させて、掘削泥練軸２３，２６，２７を回転させながら、吊上機３０の巻上機３３を駆動して、巻上機３３に巻き付けられたロープ３３ａを繰り出し、ロープ３３ａに付けた吊鈎３６で吊り下げた掘削泥練機２０を降下させ、掘削泥練機２０の円筒型ケーシング２４を案内体４５の案内片４５ｂ，４５ｂに沿って下方に移動させ、掘削泥練軸２３，２６，２７の先の掘削刃２３ｂ，２６ｂ，２７ｂにて地盤を掘削する。所定の深度まで掘削したら、ミキシングプラント５２で調製した注入剤を移送ポンプ５３、移送管５４及び円筒型ケーシング２４に取り付けた管体５５等を通して掘削孔内の土砂中に前記割合にて供給しなから、掘削泥練軸２３，２６，２７を正転及び逆転させつつ、巻上機３３にてロープ３６を巻き取ったり繰り出したりして、掘削泥練軸２３，２６，２７を昇降させて、それらの撹拌翼２６ａ，２７ａ等にて掘削孔内の土砂と注入剤とを十分に撹拌泥練してから、掘削泥練軸２３，２６，２７等を引き抜く。掘削泥練軸２３，２６，２７等が引き抜かれた後に柱列式傾斜部分壁１０ａ，１０ｂが造成される。なお、地表が軟弱な場合には、図４に示すように、吊上機３０及び可動案内装置４０が走行する地表面に鉄板Ｐｌを敷設する。掘削により生じた余分の排土はクローラ式油圧ショベル６０等を使って邪魔にならない所に移送する。
【００１４】
図８に示すように、建物を構築すべき地盤の部分の一部又は全部を囲むようにに柱列式傾斜連続壁１０が構築され、建物を構築すべき地盤の部分に、図９に示すように、多数のコンクリート造の現場打ち杭１１が構築された後に、柱列式傾斜連続壁１０等で囲まれる地盤を所定の深さまで掘削し、図１０に示すように、地表面から所定の深さ（例えば、２．８ｍ〜３．５ｍ）の所に杭頭と一体にコンクリート造の基盤、フーチング等の基礎１２を構築し、基礎１２の上側に、図１１に示すように、多数の積層ゴムからなる免震装置１３を配設し、免震装置１３の上側に、建物躯体１４の下部分の免震装置１３の受け部１４ａが載設されるように、梁１４ｂ、柱１４ｃ、床１４ｄ等からなる建物躯体１４を構築する。
なお、図１及び図１１に示すように、柱列式傾斜連続壁１０の隙間Ｓｐ₂側の面にこれに接して本設のコンクリート造又はモルタル造の傾斜壁１６を構築し、その傾斜壁１６の下部を建物躯体の基礎１２に結合する。この傾斜壁１６は、傾斜連続壁１０による土圧の低減により、配筋量を少なくし壁厚を薄くすることができる。また、このソイルセメント造の柱列式傾斜連続壁は、止水性が高く、傾斜壁１６の長期的保護になる。
【００１５】
【発明の作用効果】
この発明は、特許請求の範囲の各請求項に記載した構成を備えることにより、次の（イ）〜（ト）の作用効果を奏する。
（イ）請求項１に係る発明の建物は、地表面より下方に位置する建物躯体の下部分の周囲に該建物躯体の下部分に対して間隔をおいて形成される山留壁の一部又は全部が、ソイルセメント造の柱列式傾斜連続壁で構成され、該柱列式傾斜連続壁が鉛直線に対して建物躯体の下部分の外側に傾斜し、前記柱列式傾斜連続壁の柱列の隣接する柱同士が互いに一体化されており、ソイルセメント造の柱列式傾斜連続壁が鉛直線に対して建物躯体の下部分の外側に傾斜しているため、その壁厚を大きくしなくても、土圧に十分に耐えることができ、地盤改良をすべき土壌の体積を最小することができ、コストの低減と工期の短縮を図ることができる。
（ロ）請求項２に係る発明の免震機能を備えた建物は、上記（イ）に記載した作用効果を奏するだけでなく、免震装置を設置する部分を含む建物躯体の下部分の周囲の山留壁を施工性よく構築することができる。
【００１６】
（ハ）請求項３記載のように、ソイルセメント造の柱列式傾斜連続壁を鉛直線に対して建物躯体の下部分の外側に８゜〜１６゜傾斜させるようにすると、建物躯体の下部分の周囲の山留壁の構築のための敷地を広くとることなく、土圧に耐え得る柱列式傾斜連続壁の山留壁を構築することができる。また、８゜〜１６゜程度の傾斜角度の場合は、ソイルセメント造の柱列式傾斜連続壁の構築の施工性が損なわれることがない。
（ニ）請求項４記載のように、建物躯体の下部分に面する傾斜山留壁の面にこれに接して本設のコンクリート造又はモルタル造の傾斜壁を形成すると、前記傾斜壁は、ソイルセメント造の柱列式傾斜連続壁による土圧の低減により、配筋量を少なくし壁厚を薄くすることができる。また、このソイルセメント造の柱列式傾斜連続壁は、止水性が高く、前記傾斜壁の長期的保護になる。
【００１７】
（ホ）請求項５に係る発明の建物の構築方法は、山留壁の一部又は全部として、地表面より下方に位置する建物躯体の下部分の外側となる地盤中に、鉛直線に対して建物躯体の下部分の外側に略同じ角度傾斜した多数のソイルセメント造の柱からなる柱列式傾斜連続壁を構築した後に、前記柱列式傾斜連続壁を含む山留壁で囲まれた地盤部分を所定の深度まで掘削して前記基礎を構築するものであり、ソイルセメント造の柱列式傾斜連続壁が鉛直線に対して建物躯体の下部分の外側に傾斜しているため、その壁厚を大きくしなくても、一列の柱列式傾斜連続壁の山留壁で土圧に十分に耐えることができ、地盤改良をすべき土壌の体積を最小することができ、コストの低減と工期の短縮を図ることができる。
（ヘ）請求項６に係る発明の免震機能を備えた建物の構築方法は、上記（イ）に記載した作用効果を奏するだけでなく、免震装置を設置する部分を含む建物躯体の下部分の周囲の山留壁を施工性よく構築することができる。
（ト）請求項７記載のように、ソイルセメント造の柱列式傾斜連続壁をその下方の部分が建物の外周部の下方に位置する多数のコンクリート造の杭の近傍まで達するように構築すると、柱列式傾斜連続壁の下方の部分が杭の近傍の強化された地盤等でも支持され、その壁厚を大きくしなくても、一列の柱列式傾斜連続壁の山留壁で土圧に十分に耐えることができる。
【図面の簡単な説明】
【図１】実施例の建物躯体の下部分、その外側の山留壁となる柱列式傾斜連続壁等を縦断した正面図
【図２】実施例の柱列式傾斜連続壁の構築に使う掘削泥練機の正面図
【図３】図２に示す掘削泥練機をその右側から見た側面図
【図４】実施例の傾斜山留壁の施工に使う吊上装置、掘削泥練機及び移動式案内装置の関係等を示す正面図
【図５】実施例の柱列式傾斜連続壁の構築に使う可動案内装置の機体を９０゜回動させた状態の正面図
【図６】図５に示す可動案内装置の案内体を図５のＡ−Ａ線で断面した平面図
【図７】実施例の柱列式傾斜連続壁の構築時の吊上機、可動案内装置、セメントサイロ、ミキシングプラント等の関係を示す平面図
【図８】実施例の柱列式傾斜連続壁の構築後の地盤を縦断した正面図
【図９】実施例の柱列式傾斜連続壁及び現場打ち杭の構築後の地盤を縦断した正面図
【図１０】実施例の建物躯体を構築すべき地盤の部分を掘削した後に捨てコンクリートを打設した状態を縦断した正面図
【図１１】実施例の基盤、フーチング等の基礎上に免震装置を設置し、免震装置の上側に建物躯体を構築した状態を縦断した正面図
【図１２】その（ａ）〜（ｃ）は実施例の傾斜山留壁となる柱列式傾斜連続壁の施工順序を示す平面図
【図１３】従来の山留壁の施工方法による山留壁の構築部の地盤を縦断して示す正面図
【符号の説明】
１０柱列式傾斜連続壁
１０ａ，１０ｂ柱列式傾斜部分壁
１１現場打ち杭
１２基礎
１３免震装置
１４建物躯体
１４ａ受け部
１６傾斜壁
２０掘削泥練機
２１頭部
２１ａ吊部
２１ｂモータ
２１ｃ減速機
２２ａ，２２ｂ，２２ｃ回転軸
２３，２６，２７掘削泥練軸
２３ａスクリュ
２３ｂ，２６ｂ，２７ｂ掘削刃
２４円筒型ケーシング
２６ａ，２７ａ撹拌翼
２８間隔保持手段
３０吊上機
３１クローラ式走行装置
３３巻上機
３３ａロープ
３６吊鈎
４０可動案内装置
４１クローラ式走行装置
４２機体
４４アーム
４６，４７伸縮式連結体
４５案内体
４５ａ主体
４５ｂ案内片
４６支持体（例えば、油圧式ジャッキ）
５１セメントサイロ
５２ミキシングプラント
５３移送ポンプ
５４移送管
ＦＬ床面
ＧＬ地表面
Ｓｐ₁ 収容空間
Ｓｐ₂ 隙間[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a building and a construction method thereof, and more particularly to a building having an inclined mountain retaining wall at least at a part of the periphery of the building and a construction method thereof.
[0002]
[Prior art]
For example, as shown in FIG. 13, the conventional method of constructing a mountain wall has a planar shape of the underground structure from the ground surface 2 of the soft ground 1 to the depth D necessary for the construction of the underground structure. Soil part 3 that covers the entire area of the outer periphery with the necessary wall thickness T as a self-supporting mountain steep wall is subjected to ground improvement by means of deep mixing treatment means 7, and then the underground structure of the part 3 subjected to ground improvement Excavation as dry work is performed on the part 4 surrounded by the two-dot chain line necessary for the construction of the body by an open-cut method using heavy machinery (for example, a hydraulic excavator) entering the field, and the ground surface has a trapezoidal slope with a wall thickness T There is a method for constructing the mountain retaining wall 3a and the vertical mountain retaining wall 3b having a wall thickness T (for example, see Japanese Patent Application Laid-Open No. 6-73722).
[0003]
[Problems to be solved by the invention]
The conventional method for constructing the above-mentioned mountain retaining wall is the depth D necessary for the construction of the underground structure from the ground surface 2 over the entire area of the outer periphery of the planar shape of the underground structure plus the wall thickness T of the freestanding mountain stop wall. Until the ground is improved by the deep mixing processing means 7, the portion 4 for constructing the underground structure is excavated as a dry work by an open-cut method using a heavy machine (for example, a hydraulic excavator) entering the site. However, excavation becomes easier, but the wall thickness T of the trapezoidal sloped mountain retaining wall portion 3a gradually increases as the distance from the ground surface 2 increases, increasing the volume of soil to be improved, and increasing the cost of ground improvement. There is a drawback that it will stagnate.
The problem to be solved by the present invention is to provide a building that does not have the above-mentioned drawbacks of the prior art and a method for constructing it, in other words, a building that is easy to construct and does not require a thick mountain wall, and It is to provide the construction method.
[0004]
[Means for Solving the Problems]
The building of the present invention has a concrete base, a foundation such as a footing constructed at a predetermined depth from the ground surface where the building is constructed, and a lower portion positioned below the ground surface above the foundation. A building frame having an upper part located above the ground surface is constructed, and a mountain retaining wall is formed around the lower part of the building frame located below the ground surface at a distance from the lower part. A part or all of the mountain retaining wall is composed of a soil-cemented column-type inclined continuous wall, and the column-type inclined continuous wall is located outside the lower part of the building frame with respect to the vertical line. It is inclined, and adjacent columns of the column array of the column array type inclined continuous wall are integrated with each other. In the case of a building having a seismic isolation function, a large number of seismic isolation devices are arranged on the upper side of the foundation, and a lower part located below the ground surface and an upper side of the ground surface above the seismic isolation device. A building frame with an upper part is constructed so that a mountain retaining wall is formed around the lower part of the building frame including the part where the seismic isolation device is installed.
The inclination angle of the column-type inclined continuous wall made of soil cement is determined by the softness of the ground. For example, it is inclined 8 ° to 16 ° outside the lower part of the building frame with respect to the vertical line.
If necessary, a concrete concrete or mortar inclined wall is constructed in contact with the surface of the column-type inclined continuous wall facing the lower part of the building frame.
[0005]
According to the building construction method of the present invention, a mountain retaining wall is constructed so as to surround a part or all of a portion of the ground where the building is to be constructed, and a number of concrete piles are provided on the portion of the ground where the building is to be constructed. Excavate the ground surrounded by the mountain retaining wall to a predetermined depth, build a concrete base, footing, etc. integrally with the pile head at a predetermined depth from the ground surface, above the foundation, In a building construction method for constructing a building frame having a lower part located below the ground surface and an upper part located above the ground surface, a part or all of the mountain retaining wall is below the ground surface. In the ground that is outside the lower part of the building frame, the column-type inclined continuous wall consisting of a number of soil cement columns inclined at the same angle to the outside of the lower part of the building frame with respect to the vertical line And then the mountain tower including the columnar inclined continuous wall The ground portion enclosed by drilled to a predetermined depth and is characterized in that to construct the foundation.
When building a building with a seismic isolation function, place a number of seismic isolation devices on the upper side of the foundation, above the seismic isolation device, below the ground surface and above the ground surface. Build a building frame with an upper part located. And, as a part or all of the mountain retaining wall, a number of soil cement columns in the ground which is outside the lower part located below the ground surface of the building frame including the part where the seismic isolation device is arranged Are inclined at substantially the same angle to the outside of the lower part of the building frame with respect to the vertical line, and the distance between the centers of the soil cement pillars is made smaller than its diameter, so that adjacent soil cement pillars can be connected to each other. After the soil-cemented columnar column-type sloped continuous wall is integrated, the foundation is constructed by excavating the ground portion surrounded by the mountain retaining wall including the columnar column-type sloped continuous wall.
In addition, a mountain retaining wall is constructed after the construction of the mountain retaining wall, or a mountain retaining wall is constructed after providing the pile. Alternatively, the construction of the mountain retaining wall and the construction of the pile may be performed in parallel.
[0006]
【Example】
An Example is shown by FIGS. 1-12 and is an example which applied this invention to the building provided with the seismic isolation function.
As shown in FIG. 1, a large number of concrete cast-in-place piles 11 are provided in the ground where the building is constructed, and a depth D (for example, 2.8 m to 3.5 m) from the ground surface GL. A foundation 12 such as a flat concrete base or footing is constructed integrally with the pile head, and a seismic isolation device 13 made of a large number of laminated rubber is arranged on the upper side of the foundation 12, and a building is installed on the upper side of the seismic isolation device 13. The receiving part 14a of the seismic isolation device 13 at the lower part of the frame 14 is mounted, and the building frame 14 is formed of a beam 14b, a column 14c, a floor 14d, etc. The floor surface of the floor 14d on the first floor of the building frame 14 The depth D is determined so that FL is slightly higher than the ground surface GL.
Around the accommodation space Sp ₁ of receiving from the surface of the building skeleton 14 of the lower portion 14a and the isolator 13, tubular elements inclinometer continuous wall 10 to be inclined mountain Tomekabe at intervals are formed . The columnar inclined continuous wall 10 is formed by curing the soil obtained by excavating the ground with a curing agent. The columnar inclined continuous wall 10 is inclined (for example, 10 °) outside the accommodation space Sp ₁ with respect to the vertical line. The columnar inclined continuous wall 10 has such a length that its lower part reaches the vicinity of the pile 11 located below the peripheral part of the building.
In addition, a bowl-like floor 14e is built around the building housing 14, and the bowl-like floor 14e is a portion where the columnar inclined continuous wall 10 and the seismic isolation device 13 are installed or a receiving part 14a. The upper part of the gap Sp ₂ between the lower part of the building housing 14 including the above is covered.
[0007]
Next, devices used for constructing the columnar inclined continuous wall 10 will be described.
The drilling and kneading machine 20 is shown in FIG. 2 and FIG. 3 and is a three-shaft type. The head 21 includes a hanging part 21a, a motor 21b, and a speed reducer 21c, and the motor 21b is rotated by the speed reducer 21c. The speed can be reduced and transmitted to the three rotary shafts 22a, 22b, and 22c supported by the head 21. A drilling mud shaft 23 is connected to the central rotating shaft 22a. The drilling mud shaft 23 is provided with a screw 23a over substantially the entire length, and a screw 23c and a drilling blade 23b are provided at the tip thereof. A cylindrical casing 24 is fitted over substantially the entire length of the drilling and muddy shaft 23, and the cylindrical casing 24 can be integrally coupled to the head 21. A spacing piece 25 is provided in the cylindrical casing 24 so that the center axis of the drilling and mastication shaft 23 and the center axis of the cylindrical casing 24 coincide with each other and the rotation of the drilling and muddy shaft 23 is allowed. The right rotating shaft 22b is connected to an excavation mud shaft 26 having a stirring blade 26a and an excavating blade 26b at the tip thereof, and the left rotating shaft 22c is provided with an agitating blade 27a and an excavating blade 27b at the tip thereof. The drilling mud shaft 27 is connected.
[0008]
Spacing means 28 is provided between the cylindrical casing 24 and the left and right drilling mud shafts 26, 27, and the respective drilling mud shafts 23, 26, 27 maintain their central axes parallel to each other. Each can be rotated.
As a hoisting machine 30 for lifting the excavating mud machine 20, a hoisting machine 33, a telescoping boom are provided on a machine body 32 with a turning device provided on the upper part of a crawler type traveling device 31 as shown in FIG. 34, a mobile crane provided with a boom hoisting device 35, a cab and the like is used.
The hanging rod 36 attached to the rope 33a wound around the hoisting machine 33 and suspended from the tip of the boom 34 is hung on the hanging portion 21a of the head 21 of the excavating mud mill 20, and the excavating mud mill 20 is moved. It is lifted so that the drilling and kneading machine 20 can be raised and lowered. The lifting machine 30 and the excavating mud machine 20 constitute a movable excavating mud apparatus.
[0009]
A movable guide device 40 that guides the cylindrical casing 24 of the excavating and kneading machine 20 in the vertical direction while maintaining a constant inclination angle θ has the configuration shown in FIGS. 4 to 6. That is, the airframe 42 is pivotally attached to the upper part of the crawler type traveling device 41 by a turning device, and the cab 43 is provided on the one side of the airframe 42, and the base of the arm 44 is supported by the support shaft 44a. The tip of the arm 44 is pivotably attached to the protrusion on the back of the guide body 45 by the support shaft 44b, and the tip of the arm 44 and the substantially center of the machine body 42 are attached. The first telescopic connection body 46 is disposed between the base body and the base of the first telescopic connection body 46 is rotatably attached to the machine body 42 by a support shaft 46a. A tip portion is rotatably attached to the guide body 45 by a support shaft 44b. A second telescopic connection body 47 is arranged on the lower side of the arm 44, and a base portion of the second telescopic connection body 47 is rotatably attached to the machine body 42 by a support shaft 47a. A tip portion of the body 47 is rotatably attached to a protrusion below the back portion of the guide body 45 by a support shaft 47b.
In addition, as the telescopic coupling bodies 46 and 47, for example, a hydraulic cylinder device in which a cylinder and a rod with a piston are fitted in the cylinder is used.
The guide body 45 is composed of, for example, a steel main body 45a having a transverse cross section, and extends in the longitudinal direction of the main body 45a with a gap from the front flange 45a ₁ of the main body 45a, and the central axis thereof extends over the ground surface GL. The long guide pieces 45b, 45b having a rod-like or tubular shape having a circular cross section are attached so as to be positioned on a plane perpendicular to the horizontal plane. The outer half of the long guide piece 45b is covered with a cover 45c having a semicircular cross section. Incidentally, long in place of the guide piece 45b, it may be provided two rows plurality of guide rollers spaced the flange 45a ₁ located at intervals in the central axis.
If necessary, a receiving piece 45d is attached to the lower back surface of the main body 45a of the guide body 45, and a support body (for example, a hydraulic jack) 46 is disposed between the lower surface of the receiving piece 45d and the ground surface, Displacement of the guide body 45 is prevented when the cylindrical casing 24 of the drilling and kneading machine 20 is engaged.
[0010]
Next, how to guide the cylindrical casing 24 of the excavating and kneading machine 20 by the movable guide device 40 will be described. As shown in FIGS. 4 and 7, the crawler type traveling device 41 is parallel to the center line of the upper surface of the columnar inclined continuous wall 10 to be constructed, and the guide piece 45 b of the guide body 45 of the movable guide device 40. , 45b, the movable guide device 40 is moved to such a position that the outer surface of the columnar inclined continuous wall 10 to be constructed is located on the extended line of the central axis line.
Then, as a lifting machine 30 for lifting the excavating mud mill 20, a mobile crane equipped with a hoisting machine 33, a telescopic boom 34, a boom hoisting device 35, etc. is used, and a rope 33 a suspended from the tip of the boom 34 is used. The attached hanging rod 36 is hung by hanging on the hanging portion 21a of the head 21 of the excavating mud mill 20, and the hoisting machine 30 in which the excavating mud machine 20 is suspended is brought close to the movable guide device 40 and suspended. The lower outer peripheral surface of the cylindrical casing 24 of the drilling and kneading machine 20 in a lowered state is brought into contact with the guide pieces 45b and 45b of the guide body 45, and the telescopic coupling bodies 46 and 47 of the movable guide device 40 are expanded and contracted. Adjustment is made so that the inclination angle θ of the central axis of the cylindrical casing 24 of the drilling and muddying machine 20 becomes a predetermined inclination angle and the extension line of the central axis coincides with the center line of the surface of the columnar inclined continuous wall 10. To do.
Then, the hoisting machine 33 of the hoisting machine 30 is driven by rotating the motor 21b of the excavating mud mill 20 to rotate the excavating mudshaft shafts 23, 26 and 27, and the hoisting machine 33 is wound around the hoisting machine 33. The rope 33a is fed out and the drilling and kneading machine 20 suspended by the hanging rod 36 attached to the rope 33a is lowered, and the cylindrical casing 24 of the drilling and kneading machine 20 is moved along the guide pieces 45b and 45b of the guide body 45. The ground is excavated by the excavating blades 23b, 26b and 27b at the tip of the excavating mud shafts 23, 26 and 27.
[0011]
As shown in FIG. 7, a cement silo 51, a mixing plant 52, a transfer pump 53, and the like are installed at the construction site.
In order to give a predetermined uniaxial compressive strength to the columnar inclined continuous wall 10 to be constructed, the amount of the infusate per 1 m ^{3 of on-} site earth and sand is, for example, 260 kg of cement, 10 kg of bentonite, and 390 l of water. The mixing plant 52 prepares an injecting agent having the above mixing ratio, that is, a mixing ratio of 260 kg of cement, 10 kg of bentonite, and 390 l of water, and supplies it to the drilling and kneading machine 20 through the transfer pipe 54.
[0012]
Next, a method of constructing the columnar sloped continuous wall 10 that becomes the sloped mountain retaining wall will be described.
As shown in FIG. 12 (a), three soil cement columns are spaced apart from each other on a central line Cl in plan view of the columnar sloped continuous wall 10 of the sloped mountain wall to be constructed. As shown in FIG. 12 (b), the columnar sloped partial wall 10a is connected to the gap between the columnar sloped partial wall 10a and the columnar sloped partial wall 10a. A column-row inclined partial wall 10b in which three soil cement columns are connected to each other is constructed to correspond to each other, and a column-row inclined continuous wall 10 is formed as shown in FIG.
[0013]
The columnar inclined partial walls 10a and 10b are formed as follows.
For example, the hoisting machine 30 and the movable guide device 40 are arranged so as to be in the state shown in FIGS. 4 and 7, and the telescopic coupling bodies 46 and 47 of the movable guide device 40 are expanded and contracted, thereby excavating and kneading machine 20. The inclination angle θ of the central axis of the cylindrical casing 24 becomes a predetermined inclination angle, and the extension line of the central axis of each drilling muddy shaft 23, 26, 27 is the central axis CL of the ground surface of the columnar inclined continuous wall 10. Then, the hoisting machine 33 of the hoisting machine 30 is driven by rotating the motor 21b of the drilling and muddying machine 20 and rotating the drilling and muddying shafts 23, 26 and 27. The rope 33a wound around the hoisting machine 33 is fed out, the excavating mud machine 20 suspended by the hanging rod 36 attached to the rope 33a is lowered, and the cylindrical casing 24 of the excavating mud machine 20 is moved to the guide body 45. Move downward along the guide pieces 45b, 45b, and dig Previous drilling blade 23b of Doronerijiku 23,26,27, 26b, to excavate the ground at 27b. After excavating to a predetermined depth, the injection prepared in the mixing plant 52 is not supplied to the earth and sand in the excavation hole through the transfer pump 53, the transfer pipe 54, the pipe 55 attached to the cylindrical casing 24, etc. Then, while rotating and reversing the drilling mastication shafts 23, 26, and 27, the hoisting machine 33 winds and unwinds the rope 36 to raise and lower the drilling muddy shafts 23, 26, and 27, After the agitating blades 26a, 27a and the like sufficiently agitate the earth and sand in the excavation hole and the injection agent, the excavation mud shafts 23, 26, 27 and the like are pulled out. After the drilling mud shafts 23, 26, 27 and the like are pulled out, the columnar inclined portion walls 10a, 10b are formed. In addition, when the ground surface is weak, as shown in FIG. 4, the iron plate Pl is laid on the ground surface where the lifting machine 30 and the movable guide device 40 travel. Excess soil generated by excavation is transferred to an unobstructed place using a crawler excavator 60 or the like.
[0014]
As shown in FIG. 8, the columnar inclined continuous wall 10 is constructed so as to surround a part or all of the ground portion where the building is to be constructed, and the ground portion where the building is to be constructed is shown in FIG. 9. As shown in FIG. 10, the ground surrounded by the columnar inclined continuous wall 10 and the like is excavated to a predetermined depth after a large number of concrete cast-in-place piles 11 are constructed. A concrete base, footing, or other foundation 12 is constructed integrally with the pile head at a depth (for example, 2.8 m to 3.5 m), and as shown in FIG. A seismic isolation device 13 made of laminated rubber is provided, and a beam 14b, a column 14c, and a receiving portion 14a of the seismic isolation device 13 in the lower part of the building housing 14 are placed on the upper side of the seismic isolation device 13. A building housing 14 composed of a floor 14d and the like is constructed.
As shown in FIGS. 1 and 11, a concrete concrete or mortar slope wall 16 is constructed in contact with the surface on the gap Sp ₂ side of the columnar inclined continuous wall 10, and the slope wall The lower part of 16 is connected to the foundation 12 of the building frame. By reducing the earth pressure by the inclined continuous wall 10, the inclined wall 16 can reduce the amount of bar arrangement and reduce the wall thickness. Further, this column-type inclined continuous wall made of soil cement has a high water-stopping property and provides long-term protection of the inclined wall 16.
[0015]
[Effects of the invention]
This invention has the following effects (a) to (g) by providing the configuration described in each claim of the claims.
(A) The building of the invention according to claim 1 is a part of a mountain retaining wall formed around the lower part of the building frame located below the ground surface and spaced from the lower part of the building frame. Alternatively, all of them are composed of column-type inclined continuous walls made of soil cement, and the column-type inclined continuous walls are inclined to the outside of the lower part of the building frame with respect to the vertical line, Columns adjacent to each other in the column are integrated with each other, and the soil-cemented column column type inclined continuous wall is inclined to the outside of the lower part of the building frame with respect to the vertical line. Even without this, it can sufficiently withstand the earth pressure, can minimize the volume of the soil to be improved, and can reduce the cost and the construction period.
(B) The building having the seismic isolation function of the invention according to claim 2 has not only the effects described in (a) above, but also the periphery of the lower part of the building frame including the part where the seismic isolation device is installed. Can be constructed with good workability.
[0016]
(C) As described in claim 3, when the column-type inclined continuous wall made of soil cement is inclined 8 ° to 16 ° outside the lower part of the building frame with respect to the vertical line, It is possible to construct a column wall-type inclined continuous wall that can withstand earth pressure without taking up a site for the construction of the mountain wall around the part. Further, in the case of an inclination angle of about 8 ° to 16 °, the workability of construction of a column-type inclined continuous wall made of soil cement is not impaired.
(D) As described in claim 4, when a slope wall of a concrete concrete or mortar structure is formed in contact with the sloped mountain retaining wall facing the lower part of the building frame, the sloped wall is By reducing the earth pressure by the column-type inclined continuous wall made of soil cement, the amount of bar arrangement can be reduced and the wall thickness can be reduced. Moreover, this column-type inclined continuous wall made of soil cement has a high water-stopping property and provides long-term protection of the inclined wall.
[0017]
(E) The building construction method of the invention according to claim 5 is directed to a vertical line in the ground on the outside of the lower part of the building frame located below the ground surface as part or all of the mountain retaining wall. After building a column-type inclined continuous wall consisting of many soil cement columns inclined at the same angle outside the lower part of the building frame, it was surrounded by a mountain retaining wall including the column-type inclined continuous wall. The foundation is constructed by excavating the ground part to a predetermined depth. Since the soil-cemented columnar continuous slope wall is inclined outside the lower part of the building frame with respect to the vertical line, Even if the wall thickness is not increased, it is possible to sufficiently withstand the earth pressure with the mountain wall of a single column-type inclined continuous wall, minimizing the volume of soil that needs to be improved, and reducing costs. The construction period can be shortened.
(F) The method for constructing a building having the seismic isolation function of the invention according to claim 6 not only exhibits the function and effect described in (a) above, but also includes a part where the seismic isolation device is installed. The mountain retaining wall around the part can be constructed with good workability.
(G) As described in claim 7, when a soil-cemented columnar column-type inclined continuous wall is constructed so that its lower part reaches the vicinity of a number of concrete piles located below the outer peripheral part of the building The lower part of the columnar sloped continuous wall is also supported by the reinforced ground near the pile, and the earth pressure is maintained at the retaining wall of the columnar sloped continuous wall without increasing the wall thickness. Can withstand enough.
[Brief description of the drawings]
FIG. 1 is a front view of a vertical section of a column-type inclined continuous wall, which is a lower part of the building frame of the embodiment, and a mountain retaining wall on the outside thereof. FIG. 2 is used to construct a column-type inclined continuous wall of the embodiment. Front view of the drilling and kneading machine [Fig. 3] Side view of the drilling and kneading machine shown in FIG. 2 from the right side [Fig. 4] Lifting device and drilling and kneading machine used for construction of the sloped mountain retaining wall of the embodiment FIG. 5 is a front view showing a state in which the body of the movable guide device used for constructing the columnar inclined continuous wall of the embodiment is rotated by 90 °. FIG. 5 is a plan view of the guide body of the movable guide device shown in FIG. 5 taken along line AA in FIG. 5. FIG. 7 shows a lifting machine, a movable guide device, a cement silo, Plan view showing the relationship of the mixing plant, etc. [Fig. 8] Front view of the ground after the construction of the column-type inclined continuous wall of the embodiment. [Fig. 9] Column row-type tilt of the embodiment Front view of longitudinal section of ground after construction of continuous wall and on-site pile [Fig. 10] Front view of longitudinal section of abandoned concrete after excavating the ground part where the building frame of the embodiment should be constructed [Figure] 11] Front view of a state in which a seismic isolation device is installed on the foundation, footing, etc. of the embodiment, and a building frame is constructed on the upper side of the seismic isolation device. [Fig. 12] (a) to (c) are FIG. 13 is a front view showing the ground of a construction part of a mountain retaining wall according to a conventional method for constructing a mountain retaining wall in a longitudinal direction. [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Column row-type inclination continuous wall 10a, 10b Column row-type inclination partial wall 11 Field cast pile 12 Foundation 13 Seismic isolation device 14 Building frame 14a Receiving part 16 Inclination wall 20 Excavation mud mill 21 Head 21a Suspension part 21b Motor 21c Deceleration Machines 22a, 22b, 22c Rotating shafts 23, 26, 27 Drilling and mastication shafts 23a Screws 23b, 26b, 27b Drilling blades 24 Cylindrical casings 26a, 27a Stirring blades 28 Spacing means 30 Lifting machine 31 Crawler type traveling device 33 Winding Upper machine 33a Rope 36 Hanging rod 40 Movable guide device 41 Crawler type traveling device 42 Machine body 44 Arms 46, 47 Telescopic coupling body 45 Guide body 45a Main body 45b Guide piece 46 Support body (for example, hydraulic jack)
51 Cement silo 52 Mixing plant 53 Transfer pump 54 Transfer pipe FL Floor GL Ground surface Sp ₁ Accommodation space Sp ₂ Gap

Claims

A concrete base, footing, or other foundation is constructed at a predetermined depth from the ground surface where the building is to be constructed, and is located above the foundation and below the ground surface and above the ground surface. In a building in which a building frame having an upper part is constructed, and a mountain retaining wall is formed around the lower part of the building frame located below the ground surface and spaced from the lower part. A part or all of the mountain retaining wall is composed of a column-type inclined continuous wall made of soil cement, and the column-type inclined continuous wall is inclined to the outside of the lower part of the building frame with respect to the vertical line. The building is characterized in that adjacent columns in a column row of a slanted continuous wall are integrated with each other.

A large number of concrete piles are provided in the ground where the building will be constructed, and a concrete foundation, footing, etc. foundation is built together with the pile head at a predetermined depth from the ground surface. A large number of seismic isolation devices are arranged on the upper side of the building, and a building frame having a lower portion located below the ground surface and an upper portion located above the ground surface is constructed on the upper side of the seismic isolation device. In a building with a seismic isolation function in which a mountain retaining wall is formed around the lower part of the building frame including the part where the seismic device is installed, a part or all of the mountain retaining wall is a column of soil cement The columnar inclined continuous wall is inclined to the outside of the lower part of the building frame with respect to the vertical line, and adjacent columns of the columnar inclined continuous wall are integrated with each other. A building with a seismic isolation function that is characterized by being made into a building.

3. A building according to claim 1 or 2, wherein the soil-cemented column-column-type inclined continuous wall is inclined at an angle of 8 ° to 16 ° outside the lower part of the building frame with respect to the vertical line.

The building according to claim 1 or 2, wherein a concrete or mortar inclined wall is formed in contact with a column-type inclined continuous wall facing a lower part of the building frame.

A mountain retaining wall is constructed so as to enclose part or all of the ground part where the building is to be constructed, and a number of concrete piles are provided in the ground part where the building is to be constructed, and are surrounded by the mountain retaining wall. Excavate the ground to a predetermined depth, and construct a concrete base, footing, etc. integrally with the pile head at a predetermined depth from the ground surface, and the lower part located below the ground surface above the foundation And an upper part located above the ground surface, the building construction method comprising: a part or all of the mountain retaining wall, the outside of the lower part of the building housing located below the ground surface After building a column-type inclined continuous wall consisting of many soil cement columns inclined at substantially the same angle outside the lower part of the building frame with respect to the vertical line, Place the ground part surrounded by the mountain wall including the wall. Method for constructing a building, characterized by constructing the foundation was drilled to the depth.

A retaining wall is constructed so as to surround part or all of the ground part where the building is to be constructed, and a large number of concrete piles are provided in the ground part where the building frame is to be constructed, and are surrounded by the retaining wall. The excavated ground part is excavated to a predetermined depth, and a concrete base, footing, etc. is constructed integrally with the pile head at a predetermined depth from the ground surface, and a number of seismic isolation devices are placed above the base. In the building construction method with a seismic isolation function for constructing a building frame having a lower part located below the ground surface and an upper part located above the ground surface above the seismic isolation device, As part or all of the retaining wall, a number of soil-cement columns are perpendicular to the ground outside the lower part located below the ground surface of the building frame including the part where the seismic isolation device is located. Inclined at approximately the same angle outside the lower part of the building frame And the distance between the centers of each column of soil cement is made smaller than the diameter, and the adjacent soil cement columns are integrated with each other to construct a soil cement column continuous inclined wall A method for constructing a building having a seismic isolation function, wherein the foundation is constructed by excavating a ground portion surrounded by a mountain retaining wall including the columnar inclined continuous wall.

The soil-cemented column-type inclined continuous wall is constructed so that the lower part thereof extends to the vicinity of a number of concrete piles located below the outer peripheral part of the building. 6. A building construction method according to 6.