循环荷载作用下重塑海相软土蠕变特性试验研究  

Experimental Study on Creep Characteristic of Remolded Marine Soft Soil under Cyclic Loading

作　　者：许文彬 武科[1] 肖文斌 刘亚军 陈榕[2] XU Wenbin;WU Ke;XIAO Wenbin;LIU Yajun;CHEN Rong(School of Civil Engineering,Shandong University,Jinan 250061,Shandong,China;School of Civil Engineering and Architecture,Northeast Electric Power University,Jilin 132012,Jilin,China)

机构地区：[1]山东大学土建与水利学院,山东济南250061 [2]东北电力大学建筑工程学院,吉林吉林132012

出　　处：《工程技术研究》2024年第23期15-18,共4页Engineering and Technological Research

摘　　要：研究海相软土的蠕变特性,对于掌握海相软土的工程力学性能和指导城市基础设施设计具有重要意义。因此,文章选取广东珠海重塑海相软土,开展了不同含水率、循环应力幅值条件下海相软土蠕变特性的试验。研究结果表明,在海相软土蠕变中,塑性应变具有累积性;与含水率相比,应力比对于海相软土蠕变变形的影响更为显著;在相同的循环周期内,在高频循环荷载作用下,海相软土蠕变产生的轴向应变值为低频循环荷载作用下的1.0~1.5倍。Studying the creep characteristics of marine soft soil is of great significance for mastering the engineering mechanical properties of marine soft soil and guiding the design of urban infrastructure.Therefore,this paper selects the remolded marine soft soil in Zhuhai,Guangdong Province,and carries out tests on the creep characteristics of marine soft soil under different water contents and cyclic stress amplitude.The research results show that the plastic strain is cumulative in the creep of marine soft soil;compared with the water content,the stress ratio has a more significant influence on the creep deformation of marine soft soil;and the axial strain produced by the creep of marine soft soil under high-frequency cyclic loading is 1.0-1.5 times that of the low-frequency cyclic loading within the same cyclic period.

关 键 词：海相软土 循环荷载 蠕变特性 三轴蠕变试验 

分 类 号：TU43[建筑科学—岩土工程]