自平衡法在灌注桩承载力检测中的应用及其有关问题

Application of self-balanced method to bearing capacity test of grouting pile and the existing problem

自平衡法是基于静载荷试验发展而来的建筑桩基检测方法,它可以快速检测隐蔽桩体的极限承载力。文章阐述了自平衡法测桩技术,并通过工程实例,论述了试验桩现场自平衡法实测效果,同时与预估极限承载力进行比较,分析了自平衡法测桩技术中荷载箱位置的设置对于桩基极限承载力的影响。文章还对自平衡法检测应用中需要注意的问题进行了说明。

Self-balance method for construction pile test is developed from the static load testing. This paper introduces technologies concerned with the method. A real project is taken as an example to illus- trate the result of the method. The result is compared to that of the pre-estimation ultimate bearing capac- ity and is analyzed the influence of load cell location on test results of ultimate bearing capacity of piles. In addition, explanation is made to problems that should be paid attention to during operation of self-balance method.