基于统一强度理论的地基临界荷载公式  

FORMULA FOR CRITICAL LOAD OF FOUNDATION BASED ON THE UNIFIED STRENGTH THEORY

作　　者：范文[1] 林永亮[2] 秦玉虎 

机构地区：[1]西安交通大学建筑工程与力学学院,陕西西安710049 [2]长安大学地质工程与测绘工程学院,陕西西安710054 [3]西安煤炭设计研究院,陕西西安710054

出　　处：《长安大学学报（地球科学版）》2003年第3期48-51,共4页

基　　金：国家自然科学基金项目(59779028);国土资源部岩土工程开放研究实验室项目(KF011)

摘　　要：　基于统一强度理论,按照临界荷载公式的推导方法,得到地基临界荷载的统一解公式。Mohr-Coulomb强度理论计算的结果为其特例。把计算结果与《建筑地基基础设计规范》中的结果进行了对比分析,认为当不同程度地考虑中间主应力σ2的影响时,可以有效地发挥地基的强度潜能。并通过实例计算了统一强度理论参数b取不同值时地基承载力特征值,并进行了对比分析。The paper presents the results of the unified solutions related to critical load of foundation based on the unified strength theory. The solution of Mohr-Coulomb strength theory is a special case of the unified strength theory. After contrasting the results of the unified solutions with the code for design of building foundation and the results of loading test, it is considered that the strength of foundation can be utilized effectively by taking account of the effect of the intermediate principal stress(σ2). Addtionally, a strip foundation is taken as an example, and the bearing capacities of design are obtained.

关 键 词：统一强度理论 地基 承载力 临界荷载 

分 类 号：TU470.3[建筑科学—结构工程]