| 摘要 |
PURPOSE:To increase the earthquake proofness of a retaining wall by balancing the contact pressure of the wall by a method in which excavation is made at a given angle from the end of front wall for forming a bottom slab, reinforced portions are provided, a drainage trench and sweep holes are provided, and embedment is made by back-filling soil. CONSTITUTION:To form a bottom slab 7, 1/2-1/4 of the contact width of the bottom slab from the end of the front wall is horizontally leveled, and the remaining portion is excavated to slope of a given angle. A reinforced concrete bottom slab is placed. A reinforced portion 5 of a given thickness is integrated with the front wall, and a drainage trench and sweep holes 4 are provided in the outside face of the front wall. Embedment is then made and heavy stones of back-filling soil 6 are provided on the back end of the bottom slab 7 for balancing the weights of the former half and latter half from the center of the width of the bottom slab. The sliding resistance in the case where earthquake occurs can thus be increased and the contact pressure of the front end of the contact face in the usual cases can be zeroed to increase the earthquake proofness of the retaining wall. |
