【作者】 曹运江； 黄润秋； 巨能攀； 谭金花； 冯涛； 杨绪波； 杨艳娜； 房冬恒；

【Author】 CAO Yun-jiang;HUANG Run-qiu;JU Neng-pan;TAN Jin-hua;FENG Tao;YANG Xu-bo;YANG Yan-na;FANG Dong-heng National Laboratory of Geohazard Prevention and Geoenvironment Protection of Chengdu University of Technology, Chengdu, 610059 School of Civil Engineering of Hunan University of Science and Technology,Xiangtan, 411201

【机构】 成都理工大学地质灾害防治与地质环境保护国家专业实验室； 湖南科技大学土木工程学院；

【摘要】 系统地论述了通过大剪试验确定天然混合土强度参数的全过程的关键技术,包括野外现场密度测定、试验装样技巧、荷载等级设置、正应力荷载等级稳定时间与稳定量级、大剪试验σ-τ关系曲线绘制、强度参数的取值原则等,形成了一套较为完整的大剪试验技术,为类似的大剪试验提供了完整的强度参数取值操作方法,具有一定的借鉴意义。更多还原

【Abstract】 The paper has systematically discussed that the key technique of which parameter of natural mixed soilstrength has been entirely confirmed by large-sized shear test, including density determining on fie1d, installingsample skills, setting load grade, stabilizing time and magnitude of normal stress grade, drawing of σ-τ curve inlarge-sized shear test, sampling principle of intensive parameter, etc. Therefore. a set of complete technique oflarge-sized shear test has been formed. It shows some reference signification to apply complete operation methodof intensive parameter sampling for the similar large-sized shear test.更多还原