多元复合地基桩土应力比分析  

Stress ratio between piles and soils of multi-element composite foundation

作　　者：尚新生[1] 邵生俊[1] 

机构地区：[1]西安理工大学岩土工程研究所,陕西西安710048

出　　处：《西北农林科技大学学报（自然科学版）》2004年第10期131-134,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家自然科学基金项目(10172027)

摘　　要：　从单桩与桩间土的荷载-沉降曲线出发,采用荷载-沉降的双曲线模型,给出了多元复合地基桩土应力比的解析解。分析表明,桩土应力比随荷载的变化形式有3种,具体的变化形式与桩、桩间土的初始切向压缩模量和极限承载强度有关。实例计算表明,所得解析解与实测桩土应力比值基本吻合。The analytical solving of stress ratio between piles and soils for multi-element composite foundation is given by using the hyperbola model of load-settlement based on the curve of load-settlement of the single pile and soil.The paper discusses the effect of applied load upon the stress ratio between piles and soils.There are three types of n-p which are mainly concerned with the limited bearing capacity and initial tangential modulus.The results from the analytical calculation are found to be in agreement with that by actual solution.

关 键 词：多元复合地基 桩土 应力比分析 双曲线模型 初始切向压缩模量 极限承载强度 

分 类 号：TU431[建筑科学—岩土工程]