Spring constitutive model of rigid pile composite foundation and application in design of raft foundation

作     者：韩小雷 肖成安 李稼轩 冯杰强 

作者机构：School of Civil Engineering and Transportation South China University of Technology State Key Laboratory of Subtropical Architecture Science South China University of Technology 

基　　金：Project(2011ZA05) supported by State Key Laboratory of Subtropical Building Science in South China University of Technology  China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2013年第20卷第4期

页      码：1079-1084页

摘      要：The simplified analysis method based on the static equilibrium is generally adopted for raft design. The secondary stress of superstructure due to the differential settlement of the foundation is neglected, which leads to larger support moments and longitudinal bending of raft compared with real values. The spring constitutive relation of composite foundation is obtained by the flat plate loading tests in Karst region. The interaction between the spring and the raft is equivalent to the interaction between the composite foundation and the raft. The model for superstructure-raft-composite foundation interaction analysis is thus established and the raft is designed. This method not only considers the nonlinear properties of composite foundation but also analyzes the influence of superstructure on bending moment and deformation of raft. Compared with the inverted floor method, the calculated values of moment become more reasonable and uneven settlements are considered. This can be references to the design of raft foundation in similar regions.

主 题 词：刚性桩复合地基 基础设计 筏板 本构模型 应用 上层建筑 平板载荷试验 相互作用 

学科分类：0810[工学-土木类] 0806[工学-电气类] 081401[081401] 08[工学] 0805[工学-能源动力学] 0703[理学-化学类] 0814[工学-地质类] 0812[工学-测绘类] 

核心收录：

D　O　I：10.1007/s11771-013-1587-7

馆 藏 号：203611870...