钻孔灌注桩抗压承载力试验方法的对比分析
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（苏州设计研究院股份有限公司， 苏州 215021）［摘要］针对苏州轨道交通2号线太平车辆段上盖物业开发项目钻孔灌注桩工程，采用堆载法和自平衡法进行抗压承载力静载试验。概述了本次试验情况，整理了试验数据，并将堆载法与自平衡法试验数据进行了对比分析，得出了本工程中自平衡法修正系数K的取值。分析结果表明：两种试验方法均取得了较好的效果，自平衡法表现出一定的优越性。［关键词］钻孔灌注桩； 堆载法； 自平衡法； Q-s曲线； 修正系数中图分类号：TU473.1+6 文献标识码：A 文章编号：1002-848X(2013)20-0096-04Comparative analysis on compressive bearing capacity test methods of the drilled grouting pileXu Wenxi, Zhang Min, Zhu Yi, Wu Wenchun, Yang Yukun(Suzhou Institute of Architectural Design Co., Ltd., Suzhou 215021, China)Abstract: The drilled grouting pile engineering of Taipingcheliang project on Suzhou metro line two has been tested using the traditional piling-up weights method and the self-balanced method to carried out the compressive bearing capacity test. Tests were overviewed as well as the data to compare two different methods. Correction factor K of self-balanced method in this project was achieved. Results indicate that both of two test methods are effective while self-balanced method is better.Keywords: drilled grouting pile; traditional piling-up weights method; self-balanced method; Q-s curve; correction factor作者简介：徐文希，高级工程师，一级注册结构工程师，Email：wenxi.xu@siad-c.com。参考文献［1］DGJ 32/TJ 77—2009 基桩自平衡法静载试验技术规［S］．南京：江苏科学技术出版社，2009．［2］鲁良辉.桩承载力自平衡测试转换方法研究［D］．南京：东南大学，2004．［3］戴国亮.桩承载力自平衡测试法的理论与实践［D］．南京：东南大学，2003．
