MECHANISM OF DYNAMIC INSTABILITY FOR RIVERSIDE SUBGRADE

作     者：WANG Jun-Jie 1a, b, CHAI He-Jun 2, HU Yuan-Xin 3, ZHANG and Li-Juan 4 1aInstitute of Highway Engineering, Chongqing Communication Research & Design Institute, Chongqing, China, ST 400067 bCollege of River & Ocean Engineering, Chongqing Jiaotong University, Chongqing, China, ST 400074 2Chongqing Communication Research & Design Institute, Chongqing, China, ST 400067 3Chongqing Communication Research & Design Institute, Chongqing, China, ST 400067 4College of Civil Engineering, Chongqing Jiaotong University, Chongqing, China, ST 400074 

会议名称：《第一届交通运输工程国际学术会议》

会议日期：2007年

学科分类：08[工学] 0815[工学-水利工程] 081503[工学-水工结构工程] 

关 键 词：riverside subgrade dynamic instability mechanism water pressure 

摘      要：This paper focused on the mechanism of dynamic instability for the subgrade of highways in river environment. Based on analyzing the structures of the riverside subgrade, its failure features, and the factors affecting its stability, the mechanism of dynamic instability for riverside subgrade was investigated. The river water infiltrating the subgrade may reduce the interaction among soil and/or rock particles, increase their freedom and activity, and speed up the process which make the subgrade crusher and looser. The instability of the riverside subgrade is not accidental, but an evolutional process induced by many factors.