真空联合堆载加固软基的抗滑稳定性模型与应用  

A Model on Stability of Soft Foundation Improved by Vacuum－ Pile Preloading Method and Its Application

作　　者：黄腾 张迎春 杨春林 肖峰 

机构地区：[1]广东省航务工程总公司,广东广州510230

出　　处：《水运工程》2001年第2期11-15,共5页Port & Waterway Engineering

摘　　要：从应力状态入手分析真空联合堆载加固软基的特点和机理，在此基础上建立在真空联合堆载条件下计算地基稳定性的数学模型，并提出抽真空作用下真空度衰减公式和土体抗剪强度增量的计算公式，并应用于某真空联合堆载试验段的稳定性分析中。On the basis of effective stress principle, the characteristics and mechanism of improving soft foundation by vacuum－ pile preloading method are analyzed.A mathematical model is established for calculating stability of improved foundation.In addition, formulas are introduced to present the attenuation of vacuum pressure as well as the increase of soil’ s shear strength， which are applied for stability analysis of a certain vacuum preloading test section.

关 键 词：真空联合堆载 稳定性 真空度衰减 抗剪强度增量 软基加固 基本原理 应用 

分 类 号：TU472.33[建筑科学—结构工程]