低频循环荷载下盐岩轴向蠕变的Burgers模型分析_王军保.pdf

35 4 Vol.35 No. 4 2014 4 Rock and Soil Mechanics Apr. 2014 (2014) 04 0933 10 Burgers 1, 2 1, 2 3 2 1. 710055 2. 400045 3. 350108 Burgers Burgers Maxwell Kelvin Maxwell Kelvin Maxwell Kelvin Burgers Burgers TU 45 A Analysis of axial creep properties of salt rock under low frequency cyclic loading using Burgers model 1, 2 1, 2 3 2 WANG Jun-bao LIU Xin-rong HUANG Ming YANG Xin 1. College of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; 2. College of Civil Engineering, Chongqing University, Chongqing 400045, China; 3. College of Civil Engineering, Fuzhou University, Fuzhou 350108, China Abstract: In order to study the creep properties of salt rock under low frequency cyclic loading, creep tests on salt rock samples under low frequency cyclic loading are carried out by adopting the loading mode of cyclic confining pressure with a constant axial stress. The test results show that up to a certain time, the axial creep curves of salt rock are smooth; while after that point, the axial creep curves clearly fluctuate with the confining pressure. Overall, the axial creep curves of salt rock under low frequency cyclic loading are similar to that of Burgers model. According to the connection relation of component creep model, the Burgers model is divided into Maxwell model and Ke