Retaining wall and construction method therefor

Abstract

An object of the invention is to provide a retaining wall and a construction method therefor whereby fixation between a steel sheet pile wall and a formwork panel to form the retaining wall is made easy, and can be reliably made, so that construction schedule reduction is achieved. The retaining wall is composed of steel sheet piles 100 driven in the ground preliminarily, a formwork panel 201 fixed in close contact with a face of the steel sheet piles 100 opposite to a ground region, and a formwork panel 202 vertically provided at a position facing the formwork panel 201 . The formwork panels 201 and 202 are vertically provided on runners 204 fixed preliminarily to the ground by screws 203 , and have caps 205 on their tops to maintain horizontal states and linear states of the formwork panels 201 and 202.

1 . A retaining wall constructed by preliminarily driving steel sheet piles sequentially to construct a steel sheet pile wall forming continuous corrugation and performing excavation on one side of the steel sheet pile wall, the retaining wall comprising:
 a first formwork panel arranged parallel to the steel sheet pile wall in a direction parallel to and in close contact with the one side of the steel sheet pile wall; and   a second formwork panel arranged parallel to the steel sheet pile wall at a position corresponding to the width of a base structure to be constructed.   
     
     
         2 . The retaining wall according to  claim 1 , wherein the formwork panel is fixed to the closely-contacting steel sheet piles by a fixing member. 
     
     
         3 . A construction method for a retaining wall, comprising:
 a step of preliminarily driving steel sheet piles sequentially to construct a continuously-corrugated steel sheet pile wall in a plot of land where the retaining wall is constructed;   a step of performing excavation on one side of the steel sheet pile wall;   a step of arranging a first formwork panel parallel to the steel sheet pile wall in close contact with the one side of the steel sheet pile wall;   a step of arranging a second formwork parallel to the steel sheet pile wall at a position corresponding to the width of a base structure to be constructed;   a step of casting concrete to construct the base structure;   a step of performing backfill by feeding soil into recessed portions of the steel sheet pile wall; and   a step of pulling out the steel sheet pile wall.