弥补振冲碎石桩地基处理承载力不足的方法

Method to improve the bearing capacity of vibro-replacement stone pile composite foundations

摘要:

以曹妃甸原油商业储备基地工程项目为依托，根据工程特点，选用振冲碎石桩加固储罐地基。由于水压振冲扰动等原因，部分桩土复合地基检测沉降较大，无法满足设计要求，采用了沉管碎石桩加密处理的加固措施。实践证明，采用沉管碎石桩补强加固地基的处理方法，能消除原地基固结承载力不足，是一种经济合理的地基补强加固方法。

Abstract:

In this paper, the commercial crude oil reserve base project of Caofeidian was taken as the study subject. Based on the characteristics of the project, vibro-replacement stone piles were selected to reinforce the storage tank foundation. Due to the hydraulic pressure and vibro-flotation disturbance and the other causes, part of the pile-soil composite foundation was observed of large settlement, which did not meet the design requirements. The reinforcement measures with sinking pipe stone piles were adopted. It was proved that the foundation treatment method by the sinking pipe stone pile reinforcement can eliminate the insufficiency bearing capacity issue of the in-situ consolidated foundation and it is an economical and reasonable reinforcement method for the foundation.