PURPOSE: To increase a bearing force to side pressure and reduce the cost by connecting concentric and double arc inner and outer walls to each other by space holders, and making the surface of the outer wall in contact with the earth.
CONSTITUTION: A concentric and double cylindrical inner wall 2 and outer wall 3 are connected to each other by multiple space holders 4 long in vertical direction to make the surface of the wall 3 in contact with the earth 5. Next, a foundation improvement soil 6 such as soil mortar, etc., with dug soil as a base is filled between the walls 2 and 3. The inner wall of the wall 2 is dug to a specified floor surface 7, and a side pressure from the earth 5 is received as compressive force by a land slide prevention wall of circular sectional form. Thus a remarkably deep work on which large side pressure is applied can be executed, and the amount of material and dug soil can be reduced.
KOMATSU ATSUSHI
ASANO RISABURO
TAKATSU SUMIYUKI
| JPS63312418A | 1988-12-20 | |||
| JPS54108414A | 1979-08-25 |