饱和砂土中考虑群桩挤土效应的单桩承载力计算方法研究  

RESEARCH ON CALCULATING SINGLE PILE＇S BEARING CAPACITY CONSIDERING PILES＇ COMPACTION EFFECT IN SATURATED SAND

作　　者：印江涛[1] 张先进[1] 

机构地区：[1]华中科技大学土木工程与力学学院,武汉430074

出　　处：《建筑技术开发》2006年第2期27-29,共3页Building Technology Development

摘　　要：使用等效圆截面单桩模拟群桩，基于孔隙比协调的原则，提出了一种研究群桩挤土效应的建设性方法，为满足实际工程的需要，推导出群桩挤土效应对单桩承载力的影响是否明显的临界状态，并给出考虑群桩挤土效应的单桩承载力计算公式和补桩承载力计算方法，最后通过工程实例证明了以上思想的可行性。On the basis of the coordination of the void ratio of soil, a constructive method is proposed in which pile groups＇ compaction effect can be considered through a hypothetic round-section-pile. Aiming at the actual engineering demand, the critical state is deduced in which the pile groups＇ compaction effect is obvious. Through this a method of calculating single pile and supplementary pile＇s bearing capacity is gained. Finally, by an instance, the feasibility of the above-mentioned thoughts is proved.

关 键 词：饱和砂土 群桩挤土效应 圆孔扩张理论 单桩承载力 

分 类 号：TU473.11[建筑科学—结构工程]