试论桩端土强度对桩侧阻力的影响  

A Discussion on Influence of Soil Strength Underneath a Pile on the Pile Shaft Resistance

作　　者：席宁中[1] 

机构地区：[1]中国建筑科学研究院地基基础研究所,北京100013

出　　处：《建筑科学》2000年第6期51-54,60,共5页Building Science

摘　　要：就桩基承载性状的一个新的理论问题———桩端土强度对桩侧阻力的影响 ,进行了系统的引证和阐述。作者认为 ,桩侧阻力与桩端阻力之间存在相互作用 ,桩侧阻力在桩端附近局部的增强效应是普遍存在的 ,并且随桩端土层强度的提高而提高 ;同时 ,作者还从桩端部位土体随荷载增加位移发展过程的角度 。This paper elaborates a new theoretical problem on the behavior of piles under load, namely, the influence of soil strength underneath a pile on pile shaft resistance. It is deemed that there is an interaction between the pile shaft resistance and the pile base resistance, the enhancing response is ubiquitous for the pile shaft resistance around the pile end and intensifies with increase of soil strength underneath a pile. At the same time, the author explains the enhancing mechanism from developing the process of the displacement of soil around a pile end with the increase of load. [

关 键 词：桩端土强度 桩侧阻力 增强效应 

分 类 号：TU473.1[建筑科学—结构工程] TU473.11[建筑科学—土工工程]