桩撑支护体系在改扩建工程中的设计与应用

Design and application of pile supportsystem in reconstruction and expansion project

以实际工程为例,周边环境复杂,管线较多,距建筑物较近,采用钢筋混凝土灌注桩加钢管支撑进行基坑支护设计,有效控制基坑开挖过程中产生的时空效应,提高支护体系的整体刚度和安全性。

In this paper,based on the actual project,the support form of reinforced concrete cast-in-place pile and a steel pipe support is used to design the foundation pit support for the surrounding complex environment.This support form can effectively control the space-time effect in the process of foundation pit excavation,and improve the overall stiffness of the support system.