318200 A7 ___B7_ 五、發明説明（1 ) 技術領域 本發明係有關於一種藉由P C鋼材（預力混凝土鋼材 )等之緊張材賦予預力之預力混凝土結構物之補修補強方 法。更詳細地該是一防止因爲P C鋼材等之緊張材斷裂而 意外地使該緊張材自結構物突出之捕修補強方法· 背景技術 以往爲了使對於加諸在混凝土結構物之負載的抵抗強 或是防止混凝土結構物發生龜裂，乃採用配設P C鋼材等 之緊張材而賦予預力的手段》 例如，由藉由P C鋼材而緊張之預力混凝土結構物所 構成之橋架一般是由第9圖所示的構造所構成。 亦即，並列數條底架2橫貫而斷面大略呈T形之橋桁 3 .........，而在各橋桁3 .........之底模板3 a..........之 間打入底模板混凝土 5 .........，使P C鋼材等之緊張材7 插通於底架2，將千斤頂等安裝在該緊張材7的端部而將 緊張材7拉緊而賦予張力使各橋桁3 .........拉緊" 經濟部中央標準局員工消費合作社印聚 (請先閲讀背面之注意事項再填寫本頁) 又，在各橋桁3 .........之主桁3 b .........上藉由混凝 土打入中間橫栃8 .........同樣地藉由緊張材7而拉緊。 此外，1 0係表在底模板3 a..........之上所實施之 鋪裝。1 2係表在底模板3 a..........之兩端打設之當作 被覆緊張材7之端部之被覆部來使用之由混凝土所構成的 地覆。14係表在中間橫桁8 .........之兩端所打設之當作 被覆緊張材7之端部之被覆部來使用之由混凝土所構成的 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -4 - 318200 A7 ___B7 五、發明説明（2 ) 橫桁被覆部。 在上述之柱張力（post tenti on)方式中，爲了使緊 張材7能夠與混凝土結構物1成爲一體，在完成拉緊後， 將薄漿（grout )注入到緊張材7與底架2之間隙內。 然而當薄漿未均勻地被填充到上述間隙內時，亦即， 在緊張材7與底架2之間留下間隙時，由於水分會積留在 該間隙內，因此，最近產生緊張材7會發生腐蝕，而導致 斷裂之情況。 _ 由於上述的斷裂，賦予張力之緊張材，會因爲自拉緊 狀態急劇地被放開所產生的能量而破壞地覆12以及橫桁 被覆部1 4，且會突出到結構物的外部。更者，在突出時 也會伴隨著爆裂音。 因此，不具結構物喪失了預力的效果，也會有緊張材 7自底架2拔出而落下，而地覆1 2以及橫桁被覆部1 4 之大的碎片落下的間題。 經濟部中央標準局員工消費合作社印製 (請先聞讀背面之注意事項再填寫本頁) 特別是在十多年前所建造的預力混凝土結構物，由於 薄漿的注入技術不如現在先進，因此發生上述情況的或然 率高。 又，在已經設置之結構物以及新設的結構物中，目前 則未有防止上述緊張材7突出的對等。 發明之揭露 在此，本發明則有鑑於上述習知的情況，其目的在於 提供一種可以防止緊張材自預力混凝土結構物中意外突出 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐) -5 - 經濟部中央梂準扃貞v\消費含作社印裝 A7 B7 玉、發明説明（3 ) 之預力混凝土結構物之補修補強方法。 - 上述本發明之目的，在藉由P C鋼材等之緊張材7導 入預力之預力混凝土結構物之補修補強方法中，可藉由將 補強片1 6固著在上述緊張材7的端部或是在端部實施被 覆之表面上而達成。 如此般，若將補強片1 6固著在緊張材7的端部或是 在端部以混凝土實施被覆的表面上時，則補強片1 6可以 吸收因爲緊張材7之斷裂而被放出之能量（以下稱爲放出 能量）所伴隨而來的衝擊，而能夠防止緊張材突出到外部 又，當在緊張材7的端部實施被覆時，雖然會因爲斷 裂而導致該被覆產生碎片，但是由於捕強片1 6被固定， 因此可以防止其碎片散到外部去。 因此，附近的人不會因爲在已經存在之預力混凝土構 造物中不知何時緊張材發生意外突出而受到驚嚇。 此外，也不致於發生緊張材突出落下的情況。 更者，當緊張材7太長或是太粗時，則伴隨著斷裂所 造成之開放能量也會較一般的情況爲大。 在上述情況下，除了將輔助鋼板1 9固著在緊張材7 的端部或是在端部實施被覆的表面上外’更將補強片1 6 困著於該輔助鋼板19上則更爲有效。 亦即，伴隨著斷裂而來之開放能量可考慮成包括由部 期的衝突所造成之衝擊破壞能量與運動能量。 在吸收該衝擊破壞能量時最好是使用具有優越的剪斷 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂- -6 - 318200 A7 B7 五、發明説明（4 ) 強度者》 另一方面，在吸收運動能量的最好是使用具有優越的 拉伸強度者。 上述輔助鋼板1 9係由金屬所構成，具有優越的剪斷 強度而適合吸收衝擊破壞能量者。 因此，若是固著在輔助鋼板1 9上的補強片使用具有 優越的拉伸張度者時，則能夠優越地吸收運動能量。 藉著如此之補強片1 6與輔助鋼板1 9的組合，具有 可以有效地防止開放能量大的緊張材7突出的效果。 又，固著多個相同或是不同的補強片1 6的手段也極 其有效。 而此是因爲當緊張材7長時或是緊張力大時，則開放 能量也會變大，而單靠固著1個上述補強片並不足以防止 緊張材7朝外部突出。 更具體的手段是上述不同的補強片16最好是包括由 具有優良之拉伸強度的強化纖維所構成的片以及由具有優 良之剪斷強度之強化纖維所構成的片。 經濟部中央標準局負工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 如此般，當將由具有優良的拉伸張度的強化纖維，例 如碳纖維所構成的片浸於樹脂中令其硬化產生固著時，則 如上所述，適於吸收運動能量。 另一方面，當讓由具有優良的剪斷強度的強化纖維， 例如玻璃纖維，聚芳基醯胺纖維或是聚烯烴纖維等之有機 纖維所構成的片浸在樹脂中令其硬化產生固著時，則適於 吸收衝擊破壞能量。 本紙張尺度適用中國國家標準（CNS )_A4規格（210X297公釐） " -7 - 經濟部中央標準局貝工消費合作社印裝 A 7 B7 五、發明説明（5 ) 因此，藉著固著多個不同的強化纖維，可以有效率·地 防止緊張材7因爲較大的開放能量而突出。 又，上述補強片1 6最好是由將織布、不織布、預浸 片（prepreg shett)或是強化纖維固定在支持體上的固定 片所構成。 如此般，若補強片1 6爲纖布、不織布、預漬片、或 是強化纖維時，可以形成具有能夠防止緊張材7突出之程 度之強度的補強片1 6，又，藉由固定在支持體1 7更可 以增加強度，且纖維不致於變動。 又，當補強片1 6由預漬片所構成時，對應其樹脂的 組成包括了在常溫下硬化到加熱硬化的範圍的對象。 更者，上述補強片1 6最好是由強化纖維所構成，其 纖維朝一個方向被配列的1層的片或是其纖維朝一個方向 或是多個方向被配列的多層的片所構成》 當使用強化纖維朝一個方向被配列到的補強片16而 防止緊張材7突出時，通常則將其多層固著在各方向，而 當使用強化纖維朝多個方向被配列的多層的補強片16時 ，則具有只靠1片即能夠使個方向獲得同樣之補強的效果 〇 但是若是只比較某個方向的強度時，則有朝多個方向 被配列的片的纖維量較朝一個方向被配列者爲以的情形^ 又，上述補強片1 6最好是被設計成中強化纖維所構 成，而每單位面積之強化纖維的量在1 〇 〇 gm2以上， 6 0 0 g/m2以下》 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先聞讀背面之注意事項再填寫本頁) 、vs -8 - 經濟部中央標準局員工消費合作社印褽 A7 ________B7___ 五、發明説明（6 ) 至於補強片1 6的強化纖維量則根據緊張材7在斷·裂 時的開放能量而變更。 但是當每一片的強化纖維量過多時，則在進行固著補 強片1 6之作業時的作業性、樹脂的含浸性會變差，又， 補強片16的製造成本也會上升。 因此，當爲由單一方向纖維所構成的補強片1 6時， 則最好強化纖維量要位在1 〇 〇 g/m2以上，6 0 0 g / m 2以下的範圍內^ 但是，當爲不織布時，則與包含單方向或是雙方向性 之交差狀者相比較，由於樹脂的含浸性良好，因此即使是 使用強化纖維量在6 0 0 g/m2以上者，則對作業性不 會帶來惡劣的影響。 又，當上述補強片1 6以及輔助鋼板1 9經由接著劑 被接著時，則具有以下的作用效果。 亦即，當緊張材7斷裂時，被其端部所推壓的補強片 1 6以及輔助鋼板1 9，則補強片1 6以及輔助鋼板1 9 會以所推壓的位置爲中心發生剝離而上浮》318200 A7 ___B7_ V. Description of the invention (1) Technical field The present invention relates to a method of repairing and strengthening a prestressed concrete structure that is prestressed by tension materials such as PC steel (prestressed concrete steel). In more detail, it is a strong method for preventing and repairing tension materials such as PC steel materials from accidentally causing the tension materials to protrude from the structure. Background Art In the past, in order to make the resistance to the load imposed on the concrete structure strong or It is to prevent cracking of concrete structures, and it is a method of giving prestress by using tension materials such as PC steel. For example, a bridge composed of prestressed concrete structures strained by PC steel is generally composed of the 9th The structure shown in the figure. That is to say, a plurality of underframes 2 traversing and a T-shaped bridge truss 3 with a substantially cross-section ..., and the bottom formwork 3 a in each bridge truss 3 .... ......... between the bottom formwork concrete 5 ........., so that the tension material 7 such as PC steel is inserted into the bottom frame 2, and the jack and the like are installed on the tension material At the end of 7, the tension material 7 is tensioned and tension is applied to make each bridge truss 3 ......... tightened " printed by the employee consumer cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back first (Fill in this page) In addition, the main truss 3 b of each bridge truss 3 ......... is driven into the middle horizontal ridge 8 by concrete ....... .. similarly tensioned by the tension material 7. In addition, 10 is the pavement implemented on the bottom template 3 a ... 1 2 is a floor covering made of concrete that is set at both ends of the bottom formwork 3 a ........ and used as the covering portion at the end of the covering tension material 7. 14 This table is composed of concrete, which is set at both ends of the middle beam 8 and used as the coated part of the end of the coated tension material 7 and is made of concrete. Standard (CNS) A4 specification (210X297mm) -4-318200 A7 ___B7 5. Description of invention (2) Transverse beam covering part. In the above post tenti on method, in order to make the tension material 7 integrated with the concrete structure 1, after finishing the tensioning, grout is injected into the gap between the tension material 7 and the chassis 2 Inside. However, when the grout is not uniformly filled in the gap, that is, when a gap is left between the tension material 7 and the chassis 2, since the moisture will accumulate in the gap, the tension material 7 is recently generated Corrosion will occur, leading to fracture. _ Due to the above-mentioned breakage, the tension material that gives tension will break the ground cover 12 and the beam covering portion 14 due to the energy generated by the self-tensioning state being suddenly released, and will protrude to the outside of the structure. What's more, it will also be accompanied by a crackling sound when protruding. Therefore, without the effect of losing the preload of the structure, there is a problem that the tension material 7 is pulled out of the underframe 2 and falls, and the large debris of the ground cover 12 and the beam covering portion 14 fall. Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back and then fill out this page). Especially for the prestressed concrete structures built more than ten years ago, the injection technology of thin slurry is not as advanced as it is now. Therefore, the probability of occurrence of the above situation is high. In addition, in existing structures and newly-built structures, there is currently no equivalent to prevent the tension material 7 from protruding. Disclosure of the Invention Here, in view of the above-mentioned conventional situation, the present invention aims to provide a method that can prevent accidental protrusion of self-prestressed concrete structures of tension materials. %) -5-Central Ministry of Economic Affairs, Ministry of Economic Affairs, Consumption and Reinforcement of Prestressed Concrete Structures Containing A7 B7 Jade and Invention Instructions (3) printed by Zuosha. -For the purpose of the present invention described above, in a method for repairing and strengthening a prestressed concrete structure in which a tensioning material 7 such as PC steel is introduced into a preload, a reinforcing piece 16 can be fixed to the end of the tensioning material 7 Or it can be achieved by applying a coating on the end. In this way, if the reinforcing sheet 16 is fixed to the end of the tension material 7 or the surface coated with concrete at the end, the reinforcement sheet 16 can absorb the energy released due to the fracture of the tension material 7 (Hereinafter referred to as energy release) the accompanying impact can prevent the tension material from protruding to the outside. When the coating is applied to the end of the tension material 7, although the coating may be broken due to breakage, but due to catch The strong piece 16 is fixed, so that its fragments can be prevented from being scattered outside. Therefore, people in the vicinity will not be frightened by the unknown pre-tensioning of the prestressed concrete structure when the tension material unexpectedly protrudes. In addition, it will not happen that the tension material protrudes and falls. Furthermore, when the tension material 7 is too long or too thick, the opening energy caused by the breakage will be greater than the general case. In the above case, in addition to fixing the auxiliary steel plate 19 to the end of the tension material 7 or the surface coated with the end, it is more effective to trap the reinforcing sheet 16 on the auxiliary steel plate 19 . That is to say, the open energy accompanying the fracture can be considered to include the impact destruction energy and motion energy caused by the periodic conflict. When absorbing the impact damage energy, it is best to use the paper with excellent shearing standards. It is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (please read the precautions on the back before filling this page). Order--6 -318200 A7 B7 V. Description of the invention (4) Intensity person> On the other hand, it is best to use those with superior tensile strength in absorbing exercise energy. The aforementioned auxiliary steel plate 19 is made of metal and has excellent shear strength and is suitable for absorbing impact destruction energy. Therefore, if the reinforcing sheet fixed to the auxiliary steel plate 19 is used with an excellent tensile strength, it can absorb exercise energy excellently. The combination of the reinforcing sheet 16 and the auxiliary steel plate 19 can effectively prevent the tension material 7 having a large opening energy from protruding. In addition, the method of fixing a plurality of the same or different reinforcing sheets 16 is also extremely effective. This is because when the tension material 7 is long or the tension force is large, the opening energy will also increase, and fixing the one reinforcing piece alone is not enough to prevent the tension material 7 from protruding to the outside. More specifically, the above-mentioned different reinforcing sheets 16 preferably include a sheet composed of reinforcing fibers having excellent tensile strength and a sheet composed of reinforcing fibers having excellent shear strength. Printed by the Consumer Labor Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling in this page) When it is hardened and fixed, it is suitable for absorbing sports energy as described above. On the other hand, when a sheet composed of organic fibers with excellent shear strength, such as glass fibers, polyarylamide fibers, or polyolefin fibers, is immersed in resin, it hardens to produce fixation Is suitable for absorbing impact destruction energy. This paper scale is applicable to the Chinese National Standard (CNS) _A4 specification (210X297mm) " -7-Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Beigong Consumer Cooperative A 7 B7 V. Description of invention (5) Therefore, by fixing more A different reinforcing fiber can effectively prevent the tension material 7 from protruding due to the large opening energy. Furthermore, the reinforcing sheet 16 is preferably composed of a fixing sheet for fixing a woven fabric, a non-woven fabric, a prepreg sheet (prepreg shett) or a reinforcing fiber to a support. In this way, if the reinforcing sheet 16 is a fibrous cloth, nonwoven fabric, pre-stained sheet, or reinforcing fiber, a reinforcing sheet 16 having a strength that can prevent the tension material 7 from protruding can be formed, and, by fixing on the support The body 17 can increase the strength without changing the fiber. In addition, when the reinforcing sheet 16 is composed of a pre-stained sheet, the composition corresponding to the resin includes objects that are hardened at room temperature to heat-hardened. Furthermore, the above-mentioned reinforcing sheet 16 is preferably composed of reinforced fibers, a single-layer sheet whose fibers are arranged in one direction or a multi-layer sheet whose fibers are arranged in one direction or multiple directions " When the reinforcing sheet 16 in which the reinforcing fibers are arranged in one direction is used to prevent the tension material 7 from protruding, usually multiple layers are fixed in each direction, and when the multi-layer reinforcing sheet 16 in which the reinforcing fibers are arranged in multiple directions is used When it is only one piece, the same reinforcement effect can be obtained in each direction. However, if only the strength in a certain direction is compared, the fiber amount of the pieces arranged in multiple directions is more aligned in one direction In the case of ^, the above-mentioned reinforcing sheet 16 is preferably designed to be composed of medium reinforcing fibers, and the amount of reinforcing fibers per unit area is not less than 1,000 gm2, but not more than 600 g / m2. The paper standard is applicable to the Chinese National Standard (CNS) A4 (210X297mm) (please read the notes on the back before filling in this page), vs -8-Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs Printed A7 ________B7___ 5 Described (6) As to reinforcing invention, the amount of the reinforcing fiber sheet 16 is changed in accordance with the tension member 7 is open at the energy-breaking crack. However, if the amount of reinforcing fibers per sheet is too large, the workability and resin impregnability when performing the operation of fixing the reinforcing sheet 16 will deteriorate, and the manufacturing cost of the reinforcing sheet 16 will also increase. Therefore, in the case of a reinforcing sheet 16 composed of unidirectional fibers, the amount of reinforcing fibers should preferably be in the range of 100 g / m2 or more and 600 g / m2 or less ^ However, when In the case of non-woven fabrics, the resin impregnation is better than those with unidirectional or bidirectional crossovers, so even if the amount of reinforcing fibers used is more than 600 g / m2, the workability will not be affected. Bring bad influence. In addition, when the reinforcing sheet 16 and the auxiliary steel plate 19 are bonded via an adhesive, they have the following effects. That is, when the tension material 7 breaks, the reinforcement piece 16 and the auxiliary steel plate 19 that are pushed by the end of the tension material 7, the reinforcement piece 16 and the auxiliary steel plate 19 will peel off around the pressed position and "Floating"
I 因此，若是自外部調查補強片1 6之上浮情形，則可 以確認出緊張材7發生斷裂的位置。 藉此，可以確實且輕易地更換已經斷裂的緊張材，可 以維持預力混凝土結構物的強度》 更者，若是藉由接著劑而固著時，則具有防止因爲緊 張材之斷裂所產生之結構物的碎片發生飛散的優點》 又，上述接著劑若是使用在常溫下硬化之熱硬化性樹 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 -9 - 經濟部中央標準局員工消費合作社印«. A7 ___B7______ 五、發明説明（7 ) 脂時，則具有以下的作用效果》 亦即，由於在塗佈接著劑後會自然地硬化，因此很容 易對預力混凝土結構物進行補修補強。 另一方面，不使用補強片1 6來達成本發明之目的的 方法，則也可以在藉由P C鋼材等之緊張材7導入預力之 預力混凝土結構物之補修補強方法，將補強鋼板2 0固著 在上述緊張材7的端部或是在端部實施被覆的表面。 如此般，即使只將補強鋼板2 0固著在緊張材7的端 部或是在端部實施被覆的表面，則與固著捕強片1 6之情 形同樣地能夠防止緊張材7突出。 更者，若上述補強鋼板2 0藉由螺栓而固著時，則可 以獲得以下的作用效果。 亦即，即使緊張材7斷裂而與捕強鋼板2 0發生衝突 時，鋼板2 0也不會自預力混凝土結構物中脫離。 因此，當緊張材7與補強鋼板2 0發生衝擊時，由於 因爲該衝突會導致在補強鋼板2 0產生凸部，而該凸部則 成爲用於識別緊張材7發生斷裂之位置的記號。 因此，可以自結構物的外部確認出緊張材7發生斷裂 的位置。 實施發明之最佳形態 以下請參照圖面來說明本發明之預力混凝土結構物之 補修補強方法的各實施形態。 此外，實施本發明之補修補強方法之預力混凝土結構 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂 -10 - 318200 A7 ____B7 五、發明説明（8 ) 物，由於與上述習知例重覆，因此省略其說明，且援用圖 面的號碼。 <第一實施形態> 第一實施形態係有關於固著捕強片的方法。 在第1圖中，1 6係表作爲強化纖維之無數的碳纖維 1 8朝一個方向多層配列在被形成爲網狀之支持體1 7的 一面上的補強片。 上述補強片1 6之每單位面積之碳纖維的量爲2 0 0 g/m2，又，拉伸張度被設計爲3 5 5 k g/mm2。 又，支持體1 7並不一定要限定在網狀，也可以是片 狀。上述支持體1 7係爲了要增強補強片1 6的強度，且 防止碳纖維之變動而設。 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 將上述補強片1 6，如第2圖所示般，如蓋蓋由P C 鋼材所構成之緊張材7之端部般地固著在預力混凝土結構 物1之地覆1 2的表面。具體地說，爲了要確保樹脂之附 著強度將底面塗料（primer)塗在地覆1 2之上面1 2 a ，側面12b，底面12c上。 在底面塗料乾燥後，則塗佈在常溫下會硬化的熱硬化 樹脂，例如環氧樹脂當作接著劑來使用。 其次，則固著上述補強片1 6，更自其上方塗佈加工 用樹脂。 同樣地再固定第2個補強片1 6。該第2層的補強片 1 6則被固定成與第1層之補強片1 6之碳纖維的方向大 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 11 經濟部中央標準局員工消费合作社印裝 A7 ------B7 五、發明説明（9 ) 約垂直相交。 被固定有上述補強片1 6的結構物1 ，即使緊張材7 斷裂’也可以藉由補強片1 6阻止緊張材7突出到外部。 因此，緊張材7不會自結構物1突出而落下。 此時’由於補強片1 6本身不會斷裂，而會以爲緊張 材7所推壓的位置爲中心而剝離上浮，因此，伴隨緊張材 7之斷裂而產生地覆12的碎片則會被封入到補強片16 與地覆12之間’而不會飛散到外部❶ 此外’也具有可自外部檢測出該上浮的位置即爲緊張 材7發生斷裂之位置的優點。 又’當然即使緊張材7不斷裂，同樣地也能夠有效地 作爲混凝土結構物的補強。 此外，如第2圖所示，當然同樣地可以將補強片1 6 固著在橫桁被覆部1 4。 (試驗結果） 上述第一實施形態的效果係根據以下的試驗而獲得。 試驗，如第9圖所示，係使用結構物1的桁長A爲 3 2 0 Omm，地覆1 2之上面寬度B以及側面高度C分 別爲4 0 0mm以及3 5 0mm，斷面大約呈T形之橋桁 3的高度爲1 〇 〇 0mm，底模板3 a之緊張材7的直徑 以及長度分別爲2 3mm以及3 6 0 0mm ’而賦予一定 之緊張力（26. 9 t ) ’將8個緊張材7呈等間隔地配 設在桁長A ( 3 2 0 Omm)之間之如實物大的試驗桁架 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁j 、JS° 12 - 經濟部中央標準局員工消費合作社印裝 A7 _ _B7__ 五、發明説明（10 ) 來進行。 試驗對象如下所述。 ① 將由上述第一實施形態之碳纖維所構成的補強片 16分別使各碳纖呈垂直相交般地將2個捕強片16重疊 在地覆12之上面12a 100mm，側面12b整面 ，下面12c 150mm，地覆12之桁行方向 1 6 0 0 m m而加以固著者。 ② 將由纖維量2 1 5 g/m2，拉伸強度2 7 5 k g /m2的玻璃纖維所構成的補強片1 6以同樣的尺寸使3 個重疊在一起加以固著者。 ③ 將由纖維量3 0 0 g/m2，拉伸張度3 5 0 kg /mm2的聚芳基醯胺纖維所構成的補強片1 6，以同樣 的尺寸，使各聚芳基醯胺纖維呈垂直相交般地使2片補強 片1 6重疊加以固著者》 分別以人工方式使緊張材7斷裂而確認其突出狀況。 各試驗體的結果如以下所述。 ① 2層碳纖維捕強片的情形 補強片1 6會以與緊張材7接觸的位置爲中心，在桁 長A方向2 5 0mm，側面高度C方向1 0 Omm的範圍 內發生上浮之情形。 但是，補強片16本身並未發現破損。 ② 3層玻璃纖維補強片之情形 補強片1 6會以與緊張材7接觸之位置爲中心，朝桁 長A方向裂開3 5 0mm，而緊張材7不會突出到外部。 本紙張尺度逋用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁) :—訂 -13 - 3ίδ2〇〇 Α7 _______Β7 五、發明説明（11 ) ③2層聚芳基醯胺纖維補強片之情形 補強片1 6會以與緊張材7接觸之位置爲中心，而在 側面高度C方向1〇〇mm的範圍內發生些微上浮的情形 〇 但是補強片1 6本身未見到任何的破損。 如此般’雖然固著上述補強片之補修補強方法的效果 係根據試驗結果而來，但是補強片1 6的材質也並一定要 限定在上述第一實施形態中的碳纖維。 亦即’補強片1 6也可以由在試驗中所使用的玻璃纖 維’聚芳基醯胺纖維所形成。此外，也可以由聚芳酯纖維 、聚烯烴纖等之有機纖維的強化纖維所形成。 更者’補強片1 6也可以自碳纖維，玻璃纖維，或是 有機纖維等3種強化纖維中任意選擇2種以上的纖維所形 成。又’補強片1 6也可以由織布、不織布、預漬片等所 形成°重要的是只要是由能夠以接著劑等之任意的手段固 著在結構物上’且具有能夠防止緊張材7突出之強度的材 質所構成的補強片16均可》 經濟部中央標準局員工消費合作社印聚 (請先閲讀背面之注意事項再填寫本頁) 因此’補強片1 6之強化纖維的量或是拉伸張度，並 不限於上述碳纖維或是玻璃纖維的例子，也可以適當地加 以變更。又，若是考慮施工的簡易性，樹脂對於補強片 1 6的含浸性’補強片1 6的製造成本，則強化纖維的量 (除了不織布）最好在1 〇 〇 g/m2〜6 0 0 g/m2, 而拉伸強度最好是在1 〇 〇 k g/mm2〜1 〇 〇 k g/ m m 2的範圍。 本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） " -14 - 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（l2 ) 又，在上述實施形態中，雖然補強片i 6係由將多層 強化纖維朝向一個方向所構成，但是並不一定要限定在上 述之構成。 例如，也可以是由將1層強化纖維朝一個方向的片所 構成，又，也可以是由將多層朝一定方向配列的纖維配列 在多個方向的片所構成。 在上述實施形態中的補修補強方法，雖然爲了增強強 度而將2個補強片1 6重疊在一起而加以固著，但是並非 補強片16—定要有2層。 亦即，只要是能夠防止緊張材7突出，也可以是1層 ，當然也可以是3層以上。 又，在上述實施形態中，雖然爲了要更增強強度，乃 將2個補強片固定在使其纖維的方向呈垂直相交的方向上 ，但是並不一定要限定在垂直相交的方向。 例如也可以將2個以上的補強片16固定在同一方向 上。 如此般，補強片16的材質、構造、纖維量、強度， 同著面積可以根據結構物的規模，緊張材7的直徑、長度 、製造成本，施工成本等而適當地加以變更。 重要的是至少要因應情況選擇能夠防止緊張材7突出 的補強片1 6 » 在加上當緊張材7發生斷裂時，若是一能夠出現補強 片1 6上游之現象者，則能夠自外部來確認是否發生斷裂 。如此般，若補強片1 6上浮時，則根據其上浮的程度以 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂 -15 - 經濟部中央標準局員工消費合作社印袋 3^S2〇〇 A7 B7 五、發明説明（13 ) 目視加以確定，更確實地根據鎚子敲打補強片表面所之聲 音來判斷是否因爲上浮而導致在內部產生於調部，而能夠 自外部確認有無斷裂。 <第二實施形態> 第二實施形態係有關於將多層由不同之材質所構成之 補強片的方法》 在本實施形態中，藉由與上述第一實例態同樣的施工 法如覆蓋緊張材7之端部般地將聚芳基醯胺纖維被配列在 一個方向之補強片16固著在預力混凝土結構物1之地覆 1 2的表面。 如自其上方被覆由上述聚芳基醯胺纖維所構成之捕強 片1 6般地，將碳纖維被配列在一個方向的補強片1 6固 著在大約與聚芳基醯胺纖維之方向呈垂直相交的方向上。 由將由上述聚芳基醯胺纖維所形成之補強片16含浸 在樹脂內而讓其硬化者，則具有優良的剪斷強度而適於吸 收衝擊破壞能量。 如此般將具有優良的拉伸強度而由強化纖維所構成的 片以及具有優良的剪斷強度而由強化纖維所構成的片予以 重疊在一起加以固著，可以同時擁有各纖維的長處。 因此，與將相同材質之補強片1 6重叠在一起加以固 著之情形相比較，可以防止因爲更大的開放能量導致緊張 材7突出。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先聞讀背面之注意事項再填寫本頁) 訂 -16 - 經濟部中央標準局負工消費合作社印製 A 7 B7 五、發明説明（14 ) (試驗結果） 上述第二實施形態的效果則是根據以下的試驗而獲得 0 試驗，如第9圖所示，係使用結構物1的桁長A爲 3 2 0 0mm，地覆1 2之上面寬度B以及側面高度C分 別爲4 0 0mm以及3 5 0mm，斷面大約呈T形之橋桁 3的高度爲1 0 0 〇mm，底模板3 a之緊張材7的直徑 以及長度分別爲2 3mm以及3 6 0 0mm，而賦予一定 之緊張力（26. 9 t )，將8個緊張材7呈等間隔地配 設在桁長A ( 3 2 0 0mm)之間之如實物大的試驗桁架 來進行。 試驗對象則是藉由與上述第一實施例相同的工法將上 述第二實施形態之聚芳基醯胺纖維被配列在一個方向之補 強片1 6，如覆蓋緊張材7的端部般地將2個補強片1 6 分別使各聚芳基醯胺纖維大約彼此呈垂直相交般，一層地 加以固定，更者，則自其上方將2個碳纖維被配列在一個 方向之補強片1 6使其各自之碳纖維彼此大約呈垂直相交 般地一層一層地加以固著。 此外’則以人工方式使緊張材7斷裂而確認其突出狀 況。 結果，會以緊張材7所抵住的位置爲中心，在桁長A 方向2 0 〇mm，側面高度C方向1 〇 〇mm範圍內發生 上浮現象。 但是，補強片1 6本身未發生任何的損壞。 本紙張尺度適用中國國家標準（CNS )八4規格（2丨〇'乂297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 -17 - A7 A7 經濟部中央標準局員工消費合作社印裝 ______B7 五、發明説明（15 ) <第三實施形態> 第三實施形態係有關於一種固定補強鋼板與補強片的 方法。 在第3A圖以及第3B圖中，19表形成爲圓盤狀的 輔助鋼板，其周緣1 9 a則被切成推拔狀，且對帶圓角。 輔助鋼板19的厚度則使用3. 2mm者。 此外，捕強片1 6之材質，構造以及安裝數目等，則 可自上述第一以及第二實施形態中所述者加以適當選擇。 將上述輔助鋼板1 9，如第4圖所示，藉由接著劑固 著在結構物位於緊張材7之延長線上之地覆12的表面上 〇 其次，因爲輔助鋼板1 9所導致之位於地覆1 2之表 面的段差則藉由環氧樹脂2 3等而平均。 在自上方固著輔助片1 6時，最好要注意以下各點。 在安裝補強片1 6時，則必須使補強片1 6相對於地 覆1 2表面之固著面積遠較於輔助鋼板1 9之固著面積爲 寬廣。 而此是因爲若相對於地覆12表面之固著面積狹窄時 、，會因爲在斷裂時之運動能量而容易剝離，而無法使補強 片1 6之拉伸力充分發運之故。 如此般，藉著將補強片1 6固著在輔助鋼板1 9之上 ，輔助鋼板1 9首先會吸收由緊張材7之突出所帶來的衝 擊〇 ^張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） " ---- -18 - (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部中央標準局員工消費合作社印装 A7 _____B7_ 五、發明説明（l6 ) 因此，與上述第一實施形態相比較，具有即使是使用 弱的補強片16也能夠防止緊張材7突出。 又，具有優越之剪斷強度的輔助鋼板1 9則適合吸收 衝擊破壞能量。 因此，若是補強片1 6使用拉伸強度比較優秀之材質 時（例如碳纖維），特別是當伴隨斷裂而來之開放能量較 一般之情形爲大時，例如對於緊張材7長，且緊張力大之 結構物的補修補強具有極佳的效果。 更者，由於藉由接著劑被固著的輔助鋼板1 9會因爲 緊張材7之斷裂所造成之突出而導致上浮，因此可自外部 來確認有無發生斷裂。 (試驗結果） 上述第三實施形態之效果可根據以下之試驗而得到。 試驗，如第9圖所示，係使用結構物1的桁長A爲 3 2 0 Omm，地覆1 2之上面寬度B以及側面高度C分 別爲4 0 〇mm以及3 5 0mm，斷面大約呈T形之橋桁 3的高度爲1 0 0 0mm，底模板3 a之緊張材7的直徑 以及長度分別爲2 3mm以及3 6 0 Omm，而賦予一定 之緊張力，將8個緊張材7呈等間隔地配設在桁長A ( 3 2 0 Omm)之間之如實物大的試驗桁架來進行。 試驗對象則爲將上述第三實施形態之輔助鋼板19直 徑爲2 0 Omm，而其周緣1 9 a被切成推拔狀，且帶有 圓角者，藉由與上述第一實施形態同樣的工法，如覆蓋緊 本紙張尺度適用中國國家標準（CNS M4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) ..I 訂 1. -19 - 經濟部中央標準局負工消費合作社印製 318200 A7 A7 B7 五、發明説明（17 ) 張材7之端部般，藉著樹脂而固著在預力混凝土結構物1 之地覆1 2的表面，更者則自其上方將2個碳纖維朝一個 方向被配列的補強片16，使其各碳纖維呈大略垂直相交 般地一層一層地加以固著。 此外，則以人工方式使緊張材7斷裂而確認其突出狀 況。 結果，會以緊張材7之抵接的位置爲中心，在桁長A 方向2 5 Omm，側面高度C方向2 5 Omm的範圍發生 上浮。 但是，補強片1 6本身則未發生破損。 此外，在上述第三實施形態中，輔助鋼板1 9的形狀 雖然爲圓盤狀，但是輔助鋼板1 9並不一定要限定在上述 形狀。 例如，如第5圖所示，輔助鋼板1 9也可以是矩形或 是其他的形狀。 重要的是只要是由適當厚度的板狀體構成即可。 又，在上述第三實施形態中，雖然輔助鋼板1 9的厚 度爲3 · 2mm，但是輔助鋼板1 9的厚度並不一定要限 定在3 . 2 m m。 但是，輔助鋼板1 9的厚度並不一定限於厚的。 因爲，愈是厚的則配合結構物的形狀很難加工，且難 以熔接。更者在產生衝突時不會產生變形，且無法自外部 來確認有無斷裂。 另一方面，當過薄時，則無法應付衝突破壞能量，緊 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公簸） (請先閱讀背面之注意事項再填寫本頁) 訂 綉! -20 - 經濟部中央標準局貝工消費合作社印製 A7 _ _B7_____ 五、發明説明（IS ) 張材7會貫穿而突出到外部。 當比較該些情況時，則輔助鋼板1 9的厚度最好是在 〇. 1mm〜.10mm的範圍。 <第四實施形態> 第四實施形態是有關於只固著捕強鋼板的方法。 在第6圖中，2 0表由在可與橫桁被覆部1 4嵌合之 大-略呈3字狀之嵌合部2 0 a的兩側延伸出安裝部2 0 b ，2 Ob的形狀所構成的補強鋼板。 在該安裝部2 0b，2 Ob則分別穿設有一對的孔 2 1，2 1 ° 補強鋼板2 0的厚度使用6mm者。 如第7圖所示，將上述捕強鋼板2 0如覆蓋緊張材7 之端部般地嵌合在預力混凝土結構物1之橫桁被覆部14 之表面上，而自安裝部2 0 b的孔將螺栓2 2插通到穿設 在主桁3 b之螺孔（未圖示）內，將螺帽2 3螺合在突出 於主桁3 b之相反側之該螺栓2 2的前端側，而將補強鋼 板20固著在主桁3b上。 當上述之緊張材7斷裂時，如第8圖所示，由於緊張 材7會因爲補強鋼板2 0而阻止其朝外部突出，因此能夠 防止緊張材7以及橫桁被覆部14之大的碎片落下。 又，當緊張材7的端部與補強鋼板2 0發生衝突時， 由於補強鋼板2 0的嵌合部2 0 a會因爲該衝擊而朝外側 彎曲而產生凸部，因此不管有沒有補強鋼板2 0的凸部亦 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂i· -21 A7 _____B7 五、發明説明（19 ) 即，不必使用任何的工具或是裝置，以目視即可以確認出 緊張材7有沒有發生斷裂。 (試驗結果） 第四實施形態的效果係根據以下的試驗而得到。 試驗，如第9圖所示，係使用結構物之桁寬D爲 4〇〇〇mm，橫桁被覆部14的寬度E爲200mm， T字形斷面橋桁3的高度爲1 0 0 0mm，中間橫桁7之 直徑以及長度分別爲2 3mm以及3 0 0 0mm之如實物 大的試驗桁架來進行。 試驗對象，如第6圖所示，補強鋼板2 0之縱向長度 Η以及橫向長度I爲300mm以及460mm，且嵌合 部2 0 a的深度J爲8 5mm，而針對厚度爲6mm與 1 2mm等2種不同的對象，以人工方式使緊張材7斷裂 而確認其突出狀況。 各試驗體的結果，如下所示。 ① 6 m m 經濟部中央樣準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 可以防止緊張材7突出，且補強鋼板2 0的表面產生 彎曲。因此，如上所述，可以自外部以目視來判斷緊張材 7有無發生斷裂。 ② 1 2 m m 雖然可以防止緊張材7突出，而補強鋼板2 0的變化 無法以視覺來加以確認。因此，無法自外部以目視來判斷 緊張材7有無斷裂。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -22 - 經濟部中央標準局員工消費合作社印製 A7 ___B7_ 五、發明説明（2〇 ) 如此般，在上述第四實施形態中之補強鋼板2 0的厚 度6 mm雖然是根據試驗結果，但是補強鋼板2 〇的厚度 並不一定要限定在6mm。 而此是因爲即使針對同一試驗桁使用5 mm以及7 mm的補強鋼板2 0’，至少可以獲得防止緊張材7突出的 效果之故。 因此，補強鋼板2 0的厚度可以根據結構物之形狀， 規模，緊張材7的長度，直徑等而適當變更。 ^ 亦即，在第四實施形態中之補強鋼板2 0的厚度，面 積，材質等可以根據結構物之規模，緊張材7之直徑等而 適當地變更設計。 而此是因爲不管結構物之規模如何，只要例如是3 mm厚度的補強鋼板2 0，均可以防止緊張材7突出到外 部，且可以自外部確認有無斷裂。 但是，若是考慮到目前之結構物的規模以及使用在此 之緊張材7的長度，再加上補強鋼板2 0之加工技術的界 限，成本等因素捕強鋼板2 0的厚度最好是在1 mm〜 1 5mm的範圍內。 當然若是將例如3 mm的補強鋼板2 0重合在一起也 可以做成6mm，9mm等之厚度的補強鋼板2 0。 <其他實施形態> 又，在上述各實施形態中，雖然是表示在緊張材7之 端部所實施的被覆係設置地覆或是橫桁被覆部的情形’但 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲该背面之注意事項再填寫本頁) 訂 -23 - A7 B7 318200 五、發明説明（21 ) 是對於未設有地覆或是橫桁被覆部之緊張材7的端部露出 的位置也可以實施本發明之補修補強方法。 (請先閲讀背面之注意事項再填寫本頁) 又，在上述第三實施形態中，雖然輔助鋼板1 9係由 1個所構成，但是也可以將例如1 mm厚的鋼板形成一定 的形狀，且將其重合在一起而構成3 mm厚的輔助鋼板 19° 圖面之簡單說明 第1圖係表在本發明之預力混凝土結構物之補修補強 方法之第一實施形態中所使用之捕強片的立體圖。 第2圖係表包含表示第一實施形態之補修補強方法之 施工狀態之部分斷面的主要部分立體圖》 第3圖係表在第三實施形態之補修補強方法中所使用 的輔助鋼板，第3圖（A)表示其俯視圖，第3圖（B ) 爲側面圖。 第4圖係表第三實施形態之補修補強方法之施工狀態 的主要部分斷面圖。 經濟部中央標準局員工消費合作社印製 第5圖係表在第三實施形態之補修補強方法中所使用 之輔助鋼板之其他構造的立體圖。 第6圖係表在第四實施形態之補修捕強方法中所使用 之補強鋼板的立體圖。 第7圖係表第四實施形態之補修補強方法之施工狀態 之主要部分的正面圖。 第8圖在實施第四實施形態之補修補強方法後，表示 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 一 24 - A7 B7 五、發明説明（22 ) 緊張材斷裂之狀態的主要部分的斷面圖。 第9圖係表包含表示以往之預力混凝土結構物之部分 圖 體 立 的 面 斷 (請先閲讀背面之注意事項再填寫本頁) 锑1· 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -25 -I Therefore, if the reinforcing sheet 16 floats up from the outside, the position where the tension material 7 breaks can be confirmed. In this way, the tension material that has been broken can be replaced reliably and easily, and the strength of the prestressed concrete structure can be maintained. Furthermore, if it is fixed by an adhesive, it has a structure that prevents the fracture of the tension material. Advantages of the scattering of fragments of the object "Also, if the above adhesive is used in thermosetting tree paper that is hardened at room temperature, the Chinese National Standard (CNS) A4 specification (210X297 mm) is applicable (please read the precautions on the back first (Fill in this page) Order-9-Printed by the Employees ’Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs«. A7 ___B7______ V. Description of the invention (7) When it is greased, it has the following effects >> That is, it will be natural after applying the adhesive Ground hardening, so it is easy to repair and strengthen the prestressed concrete structure. On the other hand, without using the reinforcing sheet 16 to achieve the purpose of the present invention, the reinforcing steel sheet 2 may also be reinforced by a method of introducing a prestressed concrete structure through a tension material 7 such as PC steel material into a prestressed concrete structure. 0 is fixed to the end of the tension material 7 or the surface where the end is coated. In this way, even if the reinforcing steel plate 20 is fixed only to the end of the tension material 7 or the surface coated with the end, the tension material 7 can be prevented from protruding in the same manner as the case where the reinforcing catch 16 is fixed. Furthermore, when the above-mentioned reinforcing steel plate 20 is fixed by bolts, the following effects can be obtained. That is, even if the tension material 7 breaks and collides with the strength-trapping steel plate 20, the steel plate 20 will not detach from the prestressed concrete structure. Therefore, when the tension material 7 impacts with the reinforcing steel plate 20, a convex portion is generated in the reinforcing steel plate 20 due to the conflict, and the convex portion becomes a mark for identifying the position where the tension material 7 breaks. Therefore, the position where the tension material 7 breaks can be confirmed from the outside of the structure. BEST MODE FOR CARRYING OUT THE INVENTION The embodiments of the method for repairing and strengthening the prestressed concrete structure of the present invention will be described below with reference to the drawings. In addition, the paper size of the prestressed concrete structure that implements the patching and strengthening method of the present invention is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (please read the precautions on the back and fill in this page). Order -10-318200 A7 ____B7 Fifth, the description of the invention (8), because it overlaps with the above-mentioned conventional example, its description is omitted, and the number on the drawing is used. < First Embodiment > The first embodiment relates to a method of fixing a strong catching sheet. In FIG. 1, 16 is a reinforcing sheet in which numerous carbon fibers 18 as reinforcing fibers are arranged in multiple layers in one direction on one side of a support 17 formed in a mesh shape. The amount of carbon fiber per unit area of the reinforcing sheet 16 is 200 g / m2, and the tensile strength is designed to be 3 5 5 k g / mm2. In addition, the support 17 is not necessarily limited to a mesh shape, and may be in a sheet shape. The above-mentioned support 17 is provided to enhance the strength of the reinforcing sheet 16 and prevent the change of the carbon fiber. Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling in this page). Put the above reinforcing sheet 16 as shown in Figure 2, if the cover is made of PC steel. The end is fixed to the surface of the ground cover 12 of the prestressed concrete structure 1 like an end. Specifically, in order to ensure the adhesion strength of the resin, a primer is applied to the upper surface 12a, the side surface 12b, and the bottom surface 12c of the floor covering 12. After the bottom coating is dried, it is coated with a thermosetting resin that hardens at room temperature, such as epoxy resin, as an adhesive. Next, the reinforcing sheet 16 is fixed, and the processing resin is coated from above. Fix the second reinforcement 16 in the same way. The second-layer reinforcement sheet 16 is fixed to the direction of the carbon fiber of the first-layer reinforcement sheet 16. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 11 Central Bureau of Standards Employee Consumer Cooperative Printed A7 ------ B7 V. Description of Invention (9) Approximately vertical intersection. The structure 1 to which the above-mentioned reinforcement sheet 16 is fixed can prevent the tension member 7 from protruding to the outside even if the tension member 7 breaks. Therefore, the tension material 7 does not protrude from the structure 1 and fall. At this time, since the reinforcing sheet 16 itself does not break, it will peel off and float around the position pressed by the tension material 7. Therefore, the fragments of the ground cover 12 accompanying the breakage of the tension material 7 will be enclosed in Between the reinforcing sheet 16 and the ground cover 12, it does not fly to the outside ❶ In addition, it also has the advantage that the floating position can be detected from the outside, that is, the position where the tension material 7 breaks. Of course, even if the tension material 7 is not broken, it can also be effectively used as a reinforcement for the concrete structure. In addition, as shown in FIG. 2, of course, it is possible to fix the reinforcing piece 16 to the beam covering portion 14 in the same manner. (Test results) The effects of the first embodiment described above were obtained according to the following tests. In the experiment, as shown in Figure 9, the truss length A of the structure 1 was 3 2 0 Omm, the upper width B and the side height C of the ground cover 12 were 4 0 0 mm and 3 5 0 mm, respectively, and the cross section was approximately The height of the T-shaped bridge truss 3 is 1000 mm, and the diameter and length of the tension material 7 of the bottom formwork 3 a are 23 mm and 3 600 mm, respectively, and give a certain tension (26. 9 t). Ten tension materials 7 are arranged at equal intervals between the truss length A (3 2 0 Omm) of the real test truss. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (please read first Note on the back and then fill out this page j, JS ° 12-Printed by A7 _ _B7__, Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Invention description (10). The test objects are as follows. ① The first embodiment above will be used The reinforcing sheet 16 composed of carbon fibers makes each carbon fiber vertically intersect and overlaps the two reinforcing sheets 16 on the upper surface 12a 100mm of the ground cover 12, the entire surface of the side surface 12b, the lower surface 12c 150mm, and the truss direction of the ground cover 1 6 0 0 mm and fixed. ② It will be stretched by the fiber amount 2 1 5 g / m2 Reinforcement sheet 16 composed of glass fibers with a degree of 2 7 5 kg / m2 is fixed by overlapping three of them with the same size. ③ It will consist of a fiber amount of 3 0 0 g / m2 and a tensile strength of 3 5 0 kg / mm2 of the reinforcing sheet 16 composed of polyarylamide fibers, with the same size, so that each of the polyarylamide fibers perpendicularly intersect so that two reinforcing sheets 16 are overlapped and fixed. The tension material 7 was broken in a manner to confirm its protruding condition. The results of each test body are as follows. ① In the case of two-layer carbon fiber reinforced strength sheet, the reinforcement sheet 16 is centered on the position where it contacts the tension material 7 at the stringer length A direction 2 5 0mm, the side height C direction 1 0 Omm within the range of floating. However, the reinforcement sheet 16 itself has not been found to be damaged. ② 3 layers of glass fiber reinforcement in the case of reinforcement sheet 16 and tension material 7 The contact position is the center, splitting 3 50 mm toward the truss length A, and the tension material 7 will not protrude to the outside. This paper scale uses the Chinese National Standard (CNS) A4 specification (210X297 mm) (please read first (Notes on the back and then fill out this page): —Subscribe-13-3ίδ2〇 Α7 _______ Β7 Fifth, the description of the invention (11) ③ The situation of the two-layer polyarylamide fiber reinforcement sheet The reinforcement sheet 16 will be centered on the position where it contacts the tension material 7, and within the range of 100 mm in the height C of the side surface A slight floating situation occurred. However, the reinforcing sheet 16 itself did not see any damage. Although the effect of the method of fixing and repairing the above-mentioned reinforcing sheet is based on the test results, the material of the reinforcing sheet 16 is not necessarily limited to the carbon fiber in the first embodiment. That is, the 'reinforcing sheet 16' may be formed of glass fiber polyarylamide fiber used in the test. In addition, it may be formed of reinforcing fibers of organic fibers such as polyarylate fibers and polyolefin fibers. Furthermore, the reinforcing sheet 16 may be formed by arbitrarily selecting two or more types of fibers from three types of reinforcing fibers such as carbon fiber, glass fiber, or organic fiber. Also, the reinforcing sheet 16 may be formed of a woven fabric, a non-woven fabric, a pre-stained sheet, etc. What is important is that it can be fixed to the structure by any means such as an adhesive agent and has a material capable of preventing tension 7 Reinforcement sheet 16 composed of materials with outstanding strength is acceptable. ”Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back and then fill out this page). The tensile strength is not limited to the above examples of carbon fiber or glass fiber, and can be changed as appropriate. In addition, if the ease of construction is considered, and the manufacturing cost of the resin's impregnation of the reinforcing sheet 16 ', the amount of reinforcing fibers (except for the non-woven fabric) is preferably in the range of 100 g / m2 ~ 600 g / m2, and the tensile strength is preferably in the range of 100 kg / mm2 to 100 kg / mm2. This paper scale applies the Chinese National Standard (CNS) A4 specification (210X297mm) " -14-A7 B7 printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Invention description (l2) In the above embodiment, Although the reinforcing sheet i 6 is composed of multiple layers of reinforcing fibers in one direction, it is not necessarily limited to the above-mentioned configuration. For example, it may be composed of a sheet in which one layer of reinforcing fibers are oriented in one direction, or it may be composed of a sheet in which multiple layers of fibers arranged in a certain direction are arranged in multiple directions. In the method of the above-mentioned embodiment, although the two reinforcing sheets 16 are overlapped and fixed in order to increase the strength, the reinforcing sheet 16 does not necessarily have two layers. That is, as long as the tension material 7 can be prevented from protruding, it may be one layer, and of course, it may be three layers or more. In addition, in the above embodiment, in order to further increase the strength, the two reinforcing pieces are fixed in the direction in which the direction of the fiber intersects perpendicularly, but it is not necessarily limited to the direction in which they intersect perpendicularly. For example, two or more reinforcing pieces 16 may be fixed in the same direction. In this way, the material, structure, fiber amount, and strength of the reinforcing sheet 16 and the area can be appropriately changed according to the scale of the structure, the diameter, length, manufacturing cost, and construction cost of the tension material 7. It is important to select at least the reinforcement sheet 16 that can prevent the tension material 7 from protruding according to the situation. In addition, when the tension material 7 breaks, if a phenomenon that the upstream of the reinforcement sheet 16 can occur, it can be confirmed from the outside. Breaking occurred. In this way, if the reinforcing sheet 16 floats, the Chinese National Standard (CNS) A4 specification (210X297mm) is applicable to this paper scale according to the degree of floating. (Please read the precautions on the back and fill in this page) Order- 15-Printed bags of employees ’consumer cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs 3 ^ S2000A7 B7 V. Description of the invention (13) Visually determine, and determine more accurately based on the sound of the hammer hitting the surface of the reinforcing sheet The inside is generated in the adjustment part, and the presence or absence of breakage can be confirmed from the outside. < Second embodiment > The second embodiment relates to a method of reinforcing layers composed of multiple layers of different materials. In this embodiment, the same construction method as the first example above is used to cover At the end of the material 7, the polyarylamide fibers are arranged in one direction, and the reinforcing sheet 16 is fixed to the surface of the ground cover 12 of the prestressed concrete structure 1. As the reinforcing sheet 16 composed of the above-mentioned polyarylamide fiber is coated from above, the reinforcing sheet 16 in which carbon fibers are arranged in one direction is fixed approximately in the direction of the direction of the polyarylamide fiber In the direction of vertical intersection. If the reinforcing sheet 16 formed of the polyarylamide fiber is impregnated with resin and hardened, it has excellent shear strength and is suitable for absorbing impact destruction energy. In this way, a sheet composed of reinforced fibers having excellent tensile strength and a sheet composed of reinforced fibers having excellent shear strength are overlapped and fixed, and the advantages of each fiber can be possessed at the same time. Therefore, compared with the case where the reinforcing materials 16 of the same material are overlapped and fixed, it is possible to prevent the tension material 7 from protruding due to a larger opening energy. This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) (please read the notes on the back before filling in this page) Order -16-Printed by the National Bureau of Standards, Ministry of Economic Affairs, Cooperative Labor Cooperative A 7 B7 5 2. Description of the invention (14) (Test results) The effect of the second embodiment described above is to obtain the 0 test based on the following test. As shown in FIG. 9, the truss length A of the structure 1 used is 3 2 0 0 mm, The upper width B and side height C of the ground cover 12 are 40.0 mm and 3 50 mm, respectively. The height of the bridge truss 3 with an approximately T-shaped cross-section is 100 mm, and the diameter of the tension material 7 of the bottom formwork 3 a And the length is 23mm and 3600mm respectively, and given a certain tension (26. 9t), 8 tension materials 7 are arranged at equal intervals between the truss length A (32200mm) Realistically large test truss is carried out. The test object is the reinforcing sheet 16 in which the polyarylamide fiber of the second embodiment described above is arranged in one direction by the same method as the first embodiment described above, as if covering the end of the tension material 7 The two reinforcing sheets 16 respectively fix the polyarylamide fibers approximately perpendicularly to each other, and fix them in one layer. Furthermore, the two carbon fibers are arranged in one direction from the top of the reinforcing sheet 16. The respective carbon fibers are fixed to each other approximately perpendicularly and layer by layer. In addition, the tension material 7 was manually broken to confirm its protruding state. As a result, the floating phenomenon occurs in the range of 200 mm in the direction of the truss length A and 100 mm in the direction of the side height C, centering on the position where the tension material 7 abuts. However, the reinforcement film 16 itself did not suffer any damage. The size of this paper is applicable to the Chinese National Standard (CNS) 8.4 specifications (2 丨 〇 '297 mm) (please read the precautions on the back and then fill out this page) Order -17-A7 A7 Employee Consumer Cooperative of Central Bureau of Standards, Ministry of Economic Affairs Printing ______B7 V. Description of the invention (15) < Third embodiment > The third embodiment relates to a method of fixing a reinforcing steel plate and a reinforcing sheet. In Figures 3A and 3B, Table 19 is a disk-shaped auxiliary steel plate, and its peripheral edge 19 a is cut into a push-out shape with rounded corners. The thickness of the auxiliary steel plate 19 is 3.2 mm. In addition, the material, structure, number of installation, etc. of the strength catching sheet 16 can be appropriately selected from those described in the first and second embodiments. As shown in FIG. 4, the auxiliary steel plate 19 is fixed to the surface of the ground cover 12 where the structure is located on the extension line of the tension material 7 by an adhesive. Secondly, the auxiliary steel plate 19 is located on the ground The step difference of the surface of the coating 1 2 is averaged by epoxy resin 2 3 and the like. When fixing the auxiliary sheet 16 from above, it is best to pay attention to the following points. When the reinforcing sheet 16 is installed, the fixing area of the reinforcing sheet 16 relative to the surface of the floor 12 must be much wider than the fixing area of the auxiliary steel plate 19. This is because if the fixed area with respect to the surface of the ground cover 12 is narrow, it will be easily peeled off due to the kinetic energy at the time of breaking, and the tensile force of the reinforcing sheet 16 cannot be fully shipped. In this way, by fixing the reinforcing sheet 16 on the auxiliary steel plate 19, the auxiliary steel plate 19 will first absorb the impact caused by the protrusion of the tension material 7. The Zhang scale applies the Chinese National Standard (CNS) A4 Specification (210X297mm) " ---- -18-(please read the notes on the back before filling in this page) Order A7 _____B7_ of the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Invention description (l6) Therefore, Compared with the first embodiment described above, it is possible to prevent the tension material 7 from protruding even if the weak reinforcing sheet 16 is used. In addition, an auxiliary steel plate 19 having excellent shear strength is suitable for absorbing impact destruction energy. Therefore, if the reinforcing sheet 16 uses a material with excellent tensile strength (for example, carbon fiber), especially when the open energy accompanying fracture is greater than the general case, for example, the tension material 7 is long and the tension is large The repairing strength of the structure has an excellent effect. Furthermore, since the auxiliary steel plate 19 fixed by the adhesive will protrude due to the protrusion caused by the breakage of the tension material 7, it can be confirmed from the outside whether breakage has occurred. (Test result) The effect of the above-mentioned third embodiment can be obtained by the following test. In the test, as shown in Fig. 9, the truss length A of the structure 1 was 3 2 0 Omm, the upper width B and the side height C of the ground cover 12 were 4 0 0 mm and 3 5 0 mm, respectively. The height of the T-shaped bridge truss 3 is 1 0 0 0 mm, the diameter and length of the tension material 7 of the bottom formwork 3 a are 23 mm and 3 6 0 Omm, respectively, and a certain tension is given to 8 tension materials 7 The test truss with a large size, which is arranged between the truss lengths A (3 2 0 Omm) at equal intervals, is carried out. The test object is that the auxiliary steel plate 19 of the above-mentioned third embodiment has a diameter of 200 mm and its peripheral edge 19 a is cut into a push-out shape and has rounded corners. By the same method as the above-mentioned first embodiment Construction methods, such as covering the size of the paper, apply the Chinese national standard (CNS M4 specification (210X297 mm) (please read the precautions on the back before filling out this page) .. I Order 1. -19-The Ministry of Economic Affairs Central Standards Bureau is working Printed by the consumer cooperative 318200 A7 A7 B7 V. Description of the invention (17) The end of the sheet material 7 is fixed by resin on the surface of the ground cover 1 2 of the prestressed concrete structure 1, and even more from above The reinforcing sheet 16 in which two carbon fibers are arranged in one direction is fixed to each carbon fiber layer by layer so as to intersect substantially vertically. In addition, the tension material 7 is manually broken to confirm its protruding condition. As a result, Centering on the position where the tension material 7 abuts, it will rise in the range of 2 5 Omm in the direction of the truss length A and 2 5 Omm in the direction of the side height C. However, the reinforcing sheet 16 itself is not damaged. In addition, in the above In the third embodiment, assistance Although the shape of the steel plate 19 is a disk shape, the auxiliary steel plate 19 is not necessarily limited to the above-mentioned shape. For example, as shown in FIG. 5, the auxiliary steel plate 19 may be rectangular or other shapes. It is sufficient as long as it is composed of a plate-like body of an appropriate thickness. In the third embodiment described above, although the thickness of the auxiliary steel plate 19 is 3.2 mm, the thickness of the auxiliary steel plate 19 is not necessarily limited to 3. . 2 mm. However, the thickness of the auxiliary steel plate 19 is not necessarily limited to thick. Because the thicker, the shape of the matching structure is difficult to process, and it is difficult to weld. Furthermore, there is no deformation when conflict occurs. And it is impossible to confirm whether there is a break from the outside. On the other hand, when it is too thin, it cannot cope with the energy of conflict destruction. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297) Please fill out this page again) Order embroidery! -20-Printed A7 _ _B7_____ by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. The invention description (IS) sheet 7 will penetrate through and highlight to the outside. When comparing these situations At this time, the thickness of the auxiliary steel plate 19 is preferably in the range of 0.1 mm to .10 mm. ≪ Fourth Embodiment > The fourth embodiment is about a method of fixing only the strength-trapping steel plate. In FIG. 6 In the table, 2 0 is formed by the shape of the mounting part 2 0 b, 2 Ob extending from both sides of the large-slightly three-shaped fitting part 20 a that can be fitted with the beam covering part 14 Reinforced steel plate. A pair of holes 21, 21 ° are drilled in the mounting portions 20b, 2Ob, and the thickness of the reinforced steel plate 20 is 6mm. As shown in FIG. 7, the above-mentioned strength-trapping steel plate 20 is fitted on the surface of the beam covering portion 14 of the prestressed concrete structure 1 as if covering the end of the tension material 7, and the self-mounting portion 20 b The bolt 2 2 is inserted into the screw hole (not shown) that penetrates the main truss 3 b, and the nut 23 is screwed to the front end of the bolt 2 2 protruding from the opposite side of the main truss 3 b Side, the reinforcing steel plate 20 is fixed to the main truss 3b. When the above-mentioned tension material 7 breaks, as shown in FIG. 8, the tension material 7 is prevented from protruding to the outside due to the reinforcing steel plate 20, so it is possible to prevent the large fragments of the tension material 7 and the beam covering portion 14 from falling . In addition, when the end of the tension material 7 collides with the reinforcing steel plate 20, the fitting portion 20a of the reinforcing steel plate 20 will be bent outward due to the impact to produce a convex portion, so whether or not the reinforcing steel plate 2 is present The convex part of 0 is also applicable to the Chinese national standard (CNS) A4 specification (210X297mm) (please read the precautions on the back before filling in this page). Order i · -21 A7 _____B7 5. Description of the invention (19) It is not necessary to use any tools or devices to visually confirm whether the tension material 7 has broken. (Test result) The effect of the fourth embodiment is obtained according to the following test. In the test, as shown in Fig. 9, the truss width D of the structure used is 4,000 mm, the width E of the transverse truss covering 14 is 200 mm, and the height of the T-shaped cross-section bridge truss 3 is 100 mm, the middle The truss 7 has a diameter and a length of 23 mm and 3,000 mm, respectively, and is carried out on a physically large test truss. The test object, as shown in Fig. 6, the longitudinal length H and the lateral length I of the reinforced steel plate 20 are 300 mm and 460 mm, and the depth J of the fitting portion 20 a is 85 mm, while the thickness is 6 mm and 12 mm, etc. Two different objects were manually broken to confirm the protruding condition. The results of each test body are shown below. ① 6 mm m Printed by the Employee Consumer Cooperative of the Central Prototype Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) to prevent the tension material 7 from protruding, and the surface of the reinforced steel plate 20 is bent. Therefore, as described above, whether the tension material 7 is broken can be visually judged from the outside. ② Although 1 2 mm can prevent the tension material 7 from protruding, the change of the reinforced steel plate 20 cannot be visually confirmed. Therefore, it is impossible to visually judge whether or not the tension material 7 is broken. This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) -22-Printed by the Ministry of Economic Affairs Central Standards Bureau Employee Consumer Cooperative A7 ___B7_ V. Invention description (2〇) As such, in the fourth embodiment above Although the thickness of the reinforced steel plate 20 is 6 mm based on the test results, the thickness of the reinforced steel plate 20 is not necessarily limited to 6 mm. This is because even if 5 mm and 7 mm reinforcing steel plates 20 'are used for the same test truss, at least the effect of preventing the protrusion of the tension material 7 can be obtained. Therefore, the thickness of the reinforcing steel plate 20 can be appropriately changed according to the shape, scale, length, diameter, and the like of the structure. ^ That is, the thickness, area, material, etc. of the reinforcing steel plate 20 in the fourth embodiment can be appropriately changed according to the scale of the structure, the diameter of the tension material 7, and the like. This is because regardless of the scale of the structure, as long as it is a reinforced steel plate 20 with a thickness of 3 mm, for example, the tension material 7 can be prevented from protruding to the outside, and the presence or absence of breakage can be confirmed from the outside. However, if you consider the scale of the current structure and the length of the tension material 7 used here, plus the limits of the processing technology of the reinforcing steel plate 20, the cost and other factors, the thickness of the steel plate 20 is preferably at 1 mm ~ 15mm. Of course, if the reinforcing steel plate 20 of, for example, 3 mm is superposed together, the reinforcing steel plate 20 of a thickness of 6 mm, 9 mm, etc. can also be made. < Other Embodiments > In addition, in each of the above-mentioned embodiments, although it is shown that the covering applied at the end of the tension material 7 is provided with a ground covering or a beam covering portion, the paper size is applicable to the Chinese country. Standard (CNS) A4 specification (210X297mm) (please read the notes on the back before filling in this page) Order -23-A7 B7 318200 V. Description of the invention (21) For the absence of ground cover or beams The position where the end of the tension material 7 of the covering portion is exposed may be implemented by the method of repairing and strengthening of the present invention. (Please read the precautions on the back before filling in this page) In addition, in the above third embodiment, although the auxiliary steel plate 19 is composed of one, it is also possible to form a certain shape of, for example, a 1 mm thick steel plate, and They are superimposed to form a 3 mm thick auxiliary steel plate 19 °. Brief description of the drawing. Figure 1 shows the strength catching sheet used in the first embodiment of the method for repairing and strengthening the prestressed concrete structure of the present invention. Perspective view. Figure 2 is a table containing a perspective view of the main part of the partial cross-section showing the construction state of the repair method of the first embodiment. FIG. 3 is a list of auxiliary steel plates used in the repair method of the third embodiment. Figure (A) shows a plan view, and Figure 3 (B) is a side view. Figure 4 is a cross-sectional view of the main part of the construction state of the repairing and strengthening method of the third embodiment. Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. Figure 5 is a perspective view showing other structures of auxiliary steel plates used in the method of repairing and strengthening the third embodiment. Fig. 6 is a perspective view of a reinforcing steel plate used in the method for repairing and capturing strength according to the fourth embodiment. Fig. 7 is a front view of the main part of the construction state of the repairing and strengthening method of the fourth embodiment. Figure 8 After implementing the patching and strengthening method of the fourth embodiment, the paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm)-24-A7 B7 V. Invention description (22) The state of tension material breakage Sectional view of the main part. Figure 9 is a table containing the partial cross-sections of the previous prestressed concrete structures (please read the precautions on the back before filling out this page) Antimony 1. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Standards apply to China National Standard (CNS) A4 specification (210X297mm) -25-