Reinforcing structure for foundation pit support and construction method of reinforcing structure: Fid-Bau Portal

Reinforcing structure for foundation pit support and construction method of reinforcing structure

ZHOU WENBIN / CHEN ZHENYU / LI KE / YANG XUETING / LIU JIANJIE

The invention relates to a reinforcing structure for foundation pit support and a construction method of the reinforcing structure and belongs to the technical field of underground construction. The reinforcing structure comprises a reinforcing wall located on the side, facing a foundation pit, of the foundation pit support. The reinforcing structure is characterized in that a plurality of supportrods horizontally arranged are arranged on the reinforcing wall, and the ends, backing on to the reinforcing wall, of the support rods are fixedly connected with the foundation pit support; and a plurality of bearing piles are arranged on the bottom of the reinforcing wall, support crown beams are poured in the portions between the bearing piles and the reinforcing wall, and a support bottom plate connected with the foundation pit support extends out of the sides, facing the foundation pit support, of the support crown beams. According to the reinforcing structure, the reinforcing wall fixedly connected with support piles always generates the acting force applied to the soil body on the periphery of the foundation pit, the foundation fit support and reinforcing wall integrality is improved, the firmness is good, it is not necessary to occupy a site outside the foundation pit to limit the foundation pit support, and the utilization rate of the foundation pit site is high.

本发明涉及地下工程的技术领域中一种用于基坑支护的加固结构及其施工方法，其包括位于基坑支护朝向基坑一侧的加固墙，其特征在于：所述加固墙设有若干水平放置的支撑杆，所述支撑杆背向加固墙的一端与基坑支护固定连接，所述加固墙底部设有若干承载桩，所述承载桩与加固墙之间浇注有支撑冠梁，所述支撑冠梁朝向基坑支护的一侧伸出有与基坑支护连接的支撑底板。本发明具有使与支撑桩固定连接的加固墙始终对基坑支护产生一个向基坑四周的土体施压的作用力，提高基坑支护以及加固强的整体性，牢固性较好，无需占用基坑外的场地对基坑支护进行限位，基坑场地的利用率较高的效果。

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