AUXILIATY STEEL SHEET PILE IN ROAD EXCAVATION CONSTRUCTION WORK, AND DRIVING CONSTRUCTION METHOD FOR STEEL SHEET PILE FOR EARTH RETAINING USING THE AUXILIARY STEEL SHEET PILE

摘要

PROBLEM TO BE SOLVED: To develop an auxiliary steel sheet pile in road excavation construction works, in which the width of trench excavation is narrow and which also have few paving sections, and a driving construction method for a steel sheet pile for earth retaining using the auxiliary steel sheet pile. SOLUTION: In the steel sheet pile for earth retaining in road excavation construction works, the auxiliary steel sheet pile in road excavation construction works, in which the auxiliary steel sheet pile 1 having the same shape as the steel sheet pile and being cut in the length of a chuck section for a sheet-pile driving machine Y is installed, a small holding plate 2 is mounted on one surface of the lower end section of the auxiliary steel sheet pile and a large holding plate 3 on the other surface mutually oppositely and a pin 4 detachably secured through holes Xa formed at the upper end section of the steel sheet pile held at the lower end of the auxiliary steel sheet pile are formed to these both holding plates, and the driving construction method for the steel sheet pile for earth retaining using the auxiliary steel sheet pile are provided.