EARTH RETAINING WALL FOR SHIELD EXCAVATION

PROBLEM TO BE SOLVED: To provide an earth retaining wall with increased durability against shear load.SOLUTION: An earth retaining wall 100 for shield excavation of the present invention includes a metallic core material 210, a hardened cement body 250, and also an easily excavated region 300 as a part of the wall structure. The easily excavated region 300 includes a plurality of resin connecting core materials 311 installed along a wall surface, a plurality of second resin connecting materials 312 overlapped to three-dimensionally intersect with the plurality of first resin connecting core materials 311, and furthermore a plurality of resin reinforcing core materials 315 overlapped on the second resin connecting core materials 312 in the direction of extension, along an inner edge part E. 【課題】せん断荷重に対する耐性が増強された土留め壁を提供する。【解決手段】本発明のシールド掘削用土留め壁１００は、金属製芯材２１０と、セメント系硬化体２５０とを含むシールド掘削用土留め壁であり、壁構造の一部に易切削領域３００を含む。易切削領域３００は、壁面に沿う方向に配設された複数の第１の樹脂製連結芯材３１１と、複数の第１の樹脂製連結芯材３１１に立体交差するように重ねられた複数の第２の樹脂製連結芯材３１２とを含み、さらに、内縁部Ｅにおいて、第２の樹脂製連結芯材３１２の延在方向に沿って延在するように重ねられた複数の樹脂製補強芯材３１５を含む。【選択図】図４