基于上海软土特性的压桩试验非线性分析模拟  

Analysis of Q-S Curve of Single Pile Considering Non-Linear Behavior Reaction on the Basis of Soft Soil in ShangHai

作　　者：宋和平[1] 朱瑞成 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092 [2]新疆岩土工程勘察设计研究院,新疆乌鲁木齐830000

出　　处：《西部探矿工程》2008年第5期1-3,共3页West-China Exploration Engineering

摘　　要：假定桩周围的土体为半空间无限体;在桩、土之间有一层无限薄的接触面,可传递桩、土之间的剪力,认为接触面的剪力和剪切位移之间的关系是非线性的;此外,还考虑了桩底土反力的非线性,认为桩底反力与位移之间的关系亦为非线性。如此,根据土体—接触面—桩体系中节点力的平衡条件,建立了求解方程。最后又进行了两个压桩曲线的对比,证明了此方法用于计算单桩沉降的可行性。In this paper,the soil is supposed as elastic body in half unlimited space,and there is an interface between the soil and the pile,which can transfer shear force.The relationship of shear force and shear displacement of the interface is considered non-linearly.And the relationship of the force and the displacement of the pile bottom is considered non-linearly too.Based on the equilibrium of node force,a new method for analysis the load（Q）-settlement（S） curve of single pile is proposed.The suitability of this analysis is shown by the project in soft soil of Shanghai.

关 键 词：单桩 非线性 压桩曲线 

分 类 号：TU413.4[建筑科学—岩土工程]