某工程试桩承载力异常原因分析及解决措施

Cause Analysis and Treatment Measures of Abnormal Bearing Capacity of Pile Foundation in a Project

某工程先后进行了两次试桩,但试桩承载力均不满足设计要求。从地质原因和施工原因对此进行分析,在排除地质原因的基础上,从施工工艺及注浆工艺方面提出相应的解决措施。第三次试桩施工在采取相关措施后,其承载力终能满足设计要求。相关措施对后续大面积工程桩的施工具有重要的指导意义,同时对在类似厚层砂(粉)性土层中进行桩端后注浆钻孔灌注桩的施工具有重要的借鉴意义。

Two pile bearing capacity tests have been carried out in a project,but the bearing capacity of test piles does not meet the design requirements.The geological factors and construction factors are analyzed,and the corresponding treatment measures are provided considering the aspects of construction technology and grouting technology on the basis of eliminating geological factors.Relevant measures are taken,and the bearing capacity of the third pile test construction can finally meet the design requirements.These measures have important guiding significance for the construction of large-area engineering piles,and also have important reference significance for the construction of post-grouting bored piles in similar thick sandy soil and silty soil.