李文平, 孙如华, 王维理, 李小琴, 张志勇. 2007: 深部土高压卸载变形结构性量化参数确定及本构模型. 工程地质学报, 15(3): 384-390.
    引用本文: 李文平, 孙如华, 王维理, 李小琴, 张志勇. 2007: 深部土高压卸载变形结构性量化参数确定及本构模型. 工程地质学报, 15(3): 384-390.
    LI Wenping, SUN Ruhua, WANG Weili, LI Xiaoqin, ZHANG Zhiyong. 2007: CONSTITUTIVE MODEL AND STRUCTURAL PARAMETER FOR UNLOADING DEFORMATION OF CLAY SOILS AT HIGH PRESSURE FROM TRIAXIAL TESTING. JOURNAL OF ENGINEERING GEOLOGY, 15(3): 384-390.
    Citation: LI Wenping, SUN Ruhua, WANG Weili, LI Xiaoqin, ZHANG Zhiyong. 2007: CONSTITUTIVE MODEL AND STRUCTURAL PARAMETER FOR UNLOADING DEFORMATION OF CLAY SOILS AT HIGH PRESSURE FROM TRIAXIAL TESTING. JOURNAL OF ENGINEERING GEOLOGY, 15(3): 384-390.

    深部土高压卸载变形结构性量化参数确定及本构模型

    CONSTITUTIVE MODEL AND STRUCTURAL PARAMETER FOR UNLOADING DEFORMATION OF CLAY SOILS AT HIGH PRESSURE FROM TRIAXIAL TESTING

    • 摘要: 用取自山东巨野矿区埋深300~600m的深部粘土样,在三轴伺服仪上进行原状和重塑土的高压三轴卸载试验,对比分析其变形特点;提出一种描述深部土高压卸载变形与强度连续变化的土结构性参数的方法,并根据三轴卸载试验结果,确定了巨野矿区深部土高压卸载变形结构性参数,建立了描述巨野矿区深部土高压卸载结构性本构模型。

       

      Abstract: Undisturbed clay samples were taken from the Juye coal mine of 300 to 600 m below the ground surface in Shandong province.These undisturbed sample and their re-mould samples are tested in triaxial apparatus under unloading test with high pressures.The different deformation characteristics between the undisturbed and the re-mould clay samples are analyzed.A method and a structural parameter to describe the change in the deformation and strength properties of deep soil during unloading process at high pressure are put forward.Based on the results of triaxial unloading test of the clays,the structural parameter is determined.The structural constitutive model which can describe the high pressure unloading process is set up.

       

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