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CORE MATERIAL FOR SOIL RETENTION WALL AND REMOVAL METHOD OF UPPER SIDE CORE MATERIAL
To provide a removal method for safely removing an upper part of a core material in a soil-mortal retention wall.SOLUTION: A core material for a soil retention wall includes: a lower side core material 11; an upper side core material 12 of which a lower end part opposes to an upper end part of the lower side core material 11 with a space C therebetween; a splice plate 13 placed over the lower side core material 11 and the upper side core material 12; first fixing means (15, 16) fixing a lower part of the splice plate 13 and the lower side core material 11; and second fixing means (17, 18) fixing an upper part of the splice plate 13 and the upper side core material 12. A bolt 17 with a sectional cut-off part at a position on a connection surface of the upper side core material 12 and the splice plate 13 is used as the second fixing means. Thereby, applying impact downward on the upper end part of the upper side core material 12 allows the upper side core material 12 to be pulled out in an upper direction after breaking the bolt 17 with the slit and to be removed.SELECTED DRAWING: Figure 2
【課題】 ソイルモルタル山留壁内の芯材の上部を施工後に安全に撤去する。【解決手段】 山留壁用の芯材は、下側芯材１１と、下側芯材１１の上端部に隙間Ｃを空けて下端部を相対させた上側芯材１２と、下側芯材１１と上側芯材１２とに跨がる形で配置される添接板１３と、添接板１３の下部と下側芯材１１とを固定する第１の固定手段（１５、１６）と、添接板１３の上部と上側芯材１２とを固定する第２の固定手段（１７、１８）と、を含む。前記第２の固定手段としては、上側芯材１２と添接板１３との接合面の位置に断面欠損部（スリット）を有するボルト１７を用いる。従って、上側芯材１２の上端部に下方向の打撃を加えることにより、スリット付きボルト１７を破壊した後、上側芯材１２を上方向に引き抜いて撤去する。【選択図】 図２
CORE MATERIAL FOR SOIL RETENTION WALL AND REMOVAL METHOD OF UPPER SIDE CORE MATERIAL
To provide a removal method for safely removing an upper part of a core material in a soil-mortal retention wall.SOLUTION: A core material for a soil retention wall includes: a lower side core material 11; an upper side core material 12 of which a lower end part opposes to an upper end part of the lower side core material 11 with a space C therebetween; a splice plate 13 placed over the lower side core material 11 and the upper side core material 12; first fixing means (15, 16) fixing a lower part of the splice plate 13 and the lower side core material 11; and second fixing means (17, 18) fixing an upper part of the splice plate 13 and the upper side core material 12. A bolt 17 with a sectional cut-off part at a position on a connection surface of the upper side core material 12 and the splice plate 13 is used as the second fixing means. Thereby, applying impact downward on the upper end part of the upper side core material 12 allows the upper side core material 12 to be pulled out in an upper direction after breaking the bolt 17 with the slit and to be removed.SELECTED DRAWING: Figure 2
【課題】 ソイルモルタル山留壁内の芯材の上部を施工後に安全に撤去する。【解決手段】 山留壁用の芯材は、下側芯材１１と、下側芯材１１の上端部に隙間Ｃを空けて下端部を相対させた上側芯材１２と、下側芯材１１と上側芯材１２とに跨がる形で配置される添接板１３と、添接板１３の下部と下側芯材１１とを固定する第１の固定手段（１５、１６）と、添接板１３の上部と上側芯材１２とを固定する第２の固定手段（１７、１８）と、を含む。前記第２の固定手段としては、上側芯材１２と添接板１３との接合面の位置に断面欠損部（スリット）を有するボルト１７を用いる。従って、上側芯材１２の上端部に下方向の打撃を加えることにより、スリット付きボルト１７を破壊した後、上側芯材１２を上方向に引き抜いて撤去する。【選択図】 図２
CORE MATERIAL FOR SOIL RETENTION WALL AND REMOVAL METHOD OF UPPER SIDE CORE MATERIAL
山留壁用の芯材、及び、上側芯材の撤去方法
YASUNAGA MASAMICHI (author)
2021-02-12
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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