土-基坑支护结构非线性共同作用弹性地基反力法(英文)  

Elastic subgrade reaction method considering nonlinear interaction between soil and retainining structure for foundation pits

作　　者：耿建勋[1] 张克绪[1] 耿永常[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《岩土工程学报》2008年第S1期295-298,共4页Chinese Journal of Geotechnical Engineering

摘　　要：根据基坑土体抗力与支护结构位移之间的非线性共同作用,建立了支护结构非线性土抗力模型。考虑由于开挖造成土弹簧刚度的软化,提出了模拟基坑开挖过程的支护结构分析方法;编制出非线性共同作用弹性地基反力法的计算程序,并分析了一个实际基坑工程中各工况支护结构的受力与变形特征。工程算例表明,该分析方法计算的支护结构位移接近实测结果,且计算参数的确定更为方便。According to the nonlinear interaction between soil reaction and retaining structure displacement in foundation pits,a nonlinear soil reaction model was established for retaining structure.The softening of soil spring stiffness during excavation was considered,and a calculation method was provided to simulate the retaining structure in the process of foundation pit construction.Then a computer program based on the elastic subgrade reaction method considering nonlinear interaction between soil and retainining structure was presented to calculate the loading and deformation features of the retaining structure during different construction stages in a case.The calculated results indicate that the retaining structure displacements calculated by this method are close to the actual displacements,and the parameters can be obtained in a convenient manner.

关 键 词：弹性地基反力法 非性线共同作用 基坑 

分 类 号：TU470[建筑科学—结构工程]