南宁市粉细砂层抗剪强度参数取值研究

广西南宁市粉细砂层分布广泛，随着许多大型基础设施建设项目的相继启动，粉细砂抗剪强度的确定对工程有重要意义且势在必行。在南宁市轨道交通深基坑中获取92组原状样进行室内试验，在3个轨道交通深基坑中进行原位试验，同时收集南宁市岩土工程勘察报告中粉细砂经验取值，将试验数据与经验值进行对比分析，结果显示：南宁市粉细砂层抗剪强度比地区经验取值稍低，与现行有效标准取值一致。

Parameters Determination for Shear Strength of Fine Sand from Nanning

The fine sand is widely distributed in Nanning .As the foundational construction in our country has enhanced , it is very important and urgent to determinate the values of shear strength of fine sand .The shear strength of fine sand by comparing the test results of 92 sets of undisturbed sample was tested in laboratory ,in situ test results of 3 rail transit sta-tion ,and investigation data of rail transit station of Nanning .The results show that the shear strength of fine sand of Nan-ning is lower than experience value of other places ,and consistent with the currently effective standard .