Strength Evaluation of Rockfill Materials Considering Confining Pressure Dependency

摘要：

It is necessary to evaluate shear strength of rock materials,which are major construction materials for a rockfill dam,considering the confining pressure dependency for the rationalized design and seismic performance evaluation of this dam type.However,the triaxial compression test,which is the most common strength test for rockfill materials,has a problem in test precision under low confining pressure condition. In this study,we carry out large-scale triaxial compression tests under low confining pressure,largescale box shear tests,and laboratory surface sliding tests for rock materials.Based on results of these tests,we investigate the evaluation method of the shear strength of rockfill materials under low confining pressure condition.In addition,we make a fundamental study on the setting method of the design strength of rock materials considering the confining pressure dependency.

关键词： embankment dam rockfill materials design strength confining pressure dependency

作者: Yoshikazu Yamaguchi Hiroyuki Satoh Naoyoshi Hayashi Hisayuki Yoshinaga

作者单位: Dam Structures Research Team (DSRT),Hydraulic Engineering Research Group (HERG),Public Works Researc DSRT,HERG,PWRI,Japan Hydraulic & River Engineering Dept,West Japan Engineering Consultants,Inc.(WESTJEC),1-1-1,Watanabe-d

会议类型: 国际会议

会议名称: The 1st International Symposium on Rockfill Dams(第一届堆石坝国际研讨会)

会议地点: 成都

会议语种:英文

页码: 437-446

在线出版日期: 2009-10-18（万方平台首次上网日期，不代表论文的发表时间）