高填方区双排桩叠加扶壁式挡墙边坡支护技术

The technology of double row pile stack buttress wall slope supporting high fill

这种挡土墙由三部分组成,第一部分为双排抗滑灌注桩及冠梁和连续梁,主要作为挡土墙基础。其中,双排抗滑桩的规格参数,根据挡土墙的支挡高度、基础各地层特性确定,并深入到坚实的持力层。第一部分完成后,逐层填筑并压实土方至冠梁与联系梁顶部,方可开始第二部分的施工。第二部分为设置在第一部分上的钢筋混凝土框箱,主要作为下部挡土结构,同时为第三部分提供基础。本部分主要由柱子、挡板、斜撑、横梁和上部联系梁组成。在土方逐层填筑并压实到横梁和联系梁顶部完成后,可以开始第三部分施工。第三部分为设置在第二部分上的L型加肋钢筋混凝土挡土墙,主要作为上部挡土结构,由底板、肋板和挡墙组成。

The retaining wall is composed of three parts. The first part is the double row anti slide piles and beams and continuous beams, mainly used as retaining wall foundation. Among them, the specifications of double row anti slide piles are determined according to the retaining height of the retaining wall and the characteristics of the underlying layers, and deep into the solid bearing layer. After the first part is completed, the construction of the second part can be started by filling and compacting the earthwork to the top of the crown beam and the top of the contact beam. The second part is the reinforced concrete frame which is set up in the first part. It is mainly used as the retaining structure of the lower part, while providing the foundation for the third part. This section is mainly composed of post, baffle, diagonal bracing, cross beam and upper connection beam. After the earthwork is filled and compacted to the top of the beam and the connection beam, the construction of the third part can begin. The third part is the L type ribbed reinforced concrete set in the second part of the retaining wall, mainly as the upper retaining structure, consisting of a base plate, floor and wall.