EARTH-RETAINING SUPPORTING

PROBLEM TO BE SOLVED: To provide earth-retaining supporting, using a wale and a strut, that is small in the number of members to be lightweight, compact in plan view shape when installed on an earth-retaining wall, and economical since no dedicated member is manufactured.SOLUTION: An earth-retaining supporting has a wale, a strut and a joining member, which comprises an earth-retaining main material having an axial direction in parallel with the wale and arranged so that a web forms the same horizontal plane, and a first stiffener reinforcing the earth-retaining main material. An end face of a strut is joined to a lengthwise center part of the joining member, a first stiffener is arranged at each of positions corresponding to both sides of a web of a strut within a flange width of the strut, respectively, and a second stiffener reinforcing the wale is installed at a position, corresponding to a space sandwiched between first stiffeners, of the wale.SELECTED DRAWING: Figure 1 【課題】部材点数が少なく軽量で、山留め壁に設置した際の平面視形状がコンパクトであり、かつ専用部材を製作することなく経済的な、腹起しと切梁を用いた山留め支保工を提供する。【解決手段】腹起し、切梁および接合部材を有し、接合部材が腹起しに対して軸方向が平行で、かつウェブが同一水平面を形成するように配置される山留主材と、山留主材を補強する第１のスチフナーとを備え、接合部材の、長手方向中央部に切梁の端面が接合されるとともに、切梁のフランジ幅内であって、切梁のウェブを挟む両側に対応する位置各々に第１のスチフナーがそれぞれ設置され、腹起しにおける第１のスチフナーで挟まれた空間に対応する位置に、腹起しを補強する第２のスチフナーが設置される。【選択図】図１