钢筋混凝土悬臂式挡土墙优化弯矩幅值的设计方法

A design method for optimizing the reinforced concrete cantilever retaining wall by adjusting bending moment amplitude

钢筋混凝土悬臂式挡土墙是一种大量采用的挡土墙,具有造价经济、施工简便、适用环境广泛的优点。为了进一步降低钢筋混凝土悬臂式挡土墙的建造成本,探讨了土压力工况作用下优化其弯矩幅值的调幅设计方法。理论分析和试算结果表明弯矩调幅设计法可以显著减小钢筋混凝土悬臂式挡土墙的弯矩最大值。相应地可以减少墙竖板和墙踵板钢筋用量,同时减小墙顶的水平位移,可提高墙背土体的稳定性。

Reinforced concrete cantilever retaining wall is a kind of extensive retaining wall,which has the advantages of economical cost,easily construction and wide application environment.In order to reduce the construction cost of reinforced concrete cantilever retaining wall,this work discusses the design method by optimizing the amplitude of the bending moment under the action of soil pressure conditions.The theoretical analysis and trial results show that this optimizing design can significantly reduce the maximum bending moment of reinforced concrete cantilever retaining wall.Accordingly,it can reduce the amount of steel bar of wall slabs,and it can reduce the horizontal displacement of the wall’s top point,and it can improve the stability of the soil.