高层建筑的刚性桩复合地基实例分析

A Case Study on Rigid Pile Composite Foundation of High-Rise Buildings

针对素混凝土刚性桩复合地基成桩工期长,在流塑性厚软土层中成桩质量差、极易出现窜孔或超灌等问题,论文介绍实际工程案例中,采用预制劲性体刚性桩作为复合地基的竖向增强体,并通过静载试验检测其复合地基承载力满足设计要求。同时也指出劲性体桩属于挤土桩,在施工过程中易出现桩体上浮问题,并提出预防措施及处理方法。

In view of the long construction period of plain concrete rigid pile composite foundation,the poor quality of pile forming in the thick and sof fluid plastic soil layer,and the easy occurrence ofhole channeling or over grouting,etc.This paper introduces a actual project case,the prefabricatedstiff rigid pile is used as the vertical reinforcement of the composite foundation in this case,and the bearing capacity of the composite foundation meets the design requirements through the static load test.At the same time,it is also pointed out that the stiff pile belongs to soil squeezing pile,which is easy to float in the construction process,and preventive measures and treatment methods are proposed.