榫卯型装配式挡土墙模型超载变形试验研究

Experimental study on overload deformation of tenon and mortise prefabricated retaining wall model

提出了新型榫卯装配式重力挡土墙,并对3种不同的墙背形式(直立式、俯斜式、仰斜式)进行了受力变形模型加载试验,结果表明,3种形式的挡土墙位移模式一致,基本由先是发生墙身绕墙趾转动(RB模式),然后墙身整体离开土体方向发生平移(T模式)两种模式组成,3种形式挡土墙极限横向位移在距墙底0.4H~0.67H范围内较为突出,且砌块挡土墙后土压力曲线和挡土墙位移曲线高度一致,其计算需结合砌块位移,为砌块挡土墙的设计提供了参考。

A new type of mortise and tenon assembly gravity retaining wall is proposed,and three different wall back forms(upright,oblique,and oblique)have been tested on the force and deformation model.The results show that the three forms of retaining the displacement mode of the soil wall is the same.It basically consists of two modes the wall body rotates around the toe of the wall(RB mode),and then the wall body moves away from the soil direction(T mode).The limit lateral displacement of the three types of retaining walls is the distance from the bottom of the wall 0.4H~0.67H is more prominent,and because the earth pressure curve behind the block retaining wall is the same height as the retaining wall displacement curve,the calculation needs to be combined with the block displacement,which is the design of the block retaining wall provided for reference.