| 摘要 |
PURPOSE:To simplify the execution of a retaining wall as well as to reduce the cost of construction work by a method in which when applying a back-filling work to the retaining wall, a filler having a specific gravity smaller than the surrounding soil is packed into the upside region of the slide face of the back- filling soil to relieve the soil pressure acting on then retaining wall. CONSTITUTION:A filler having a specific gravity smaller than that of the surrounding soil, e.g., concrete mixed with a superlight-weight material such as expanded styrol, air concrete, enclosed pressure can, compressed fiber, etc., instead of the soil of a wedged portion 2, is packed into the upside region of the slide faces (a) and (b) of back-filling soil to be packed into the back side of a retaining wall 1. In the case of expanded styrol, since its density is much smaller than that of soil, or the weight per unit volume is about 1/30 or less of soil, the reaction force of the retaining wall 1 to the earth pressure can be reduced. By using an easily processable expanded styrol, a construction work can be simplified without the needs for large-scale civil construction machines or many labors.
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