复合桩基应用范围的探讨
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（中铁第四勘察设计院集团有限公司， 武汉 430063）[摘要] 以《建筑桩基技术规范》（JGJ 94—2008）为基础，探讨复合桩基设计的应用范围。针对常用的大、中型直径的非挤土桩，作者以图表的方式，比较了独立承台下不同桩径及桩长的承台效应系数，提出了不考虑承台效应的简化设计方法。[关键词] 复合基桩; 桩土共同作用; 承台效应系数中图分类号：TU473.1+2 文献标识码：A 文章编号：1002-848X(2013)S2-0671-03作者简介：田荣，高级工程师，一级注册结构工程师，Email：tttrrrtr@sina.comDiscussion on the range of application of composite pile foundationTian Rong(The Fourth survey and Design institute of China Railway, Wuhan 430063, China)Abstract: Based on the Technical Code for Building Pile Foundations (JGJ94-2008), the application range of composite pile foundation was mainly discussed in this paper. Aiming at the non-squeeze out soil pile which has large and medium diameter, the author made a comparison about the pile caps effect coefficient of the pile caps which has different pile diameter and pile length by the chart way. Finally, the simplified design method not considering the pile cap effect was proposed.Keywords: composite foundation pile; combined action of single pile and soil; Pile cap effect coefficient
