华东交通大学学报2018，Vol.35Issue(2)：1-8,8.
盾构隧道橡胶密封垫压缩蠕变试验研究
Experimental Study on Compression Creep Test for Rubber Gasket of Shield Tunnel
罗驰 1杨新安 2雷震宇1
作者信息
- 1. 同济大学道路与交通工程教育部重点实验室 上海201804
- 2. 同济大学交通运输工程学院 上海201804
- 折叠
摘要
Abstract
Through long-term compression creep tests on two kinds of rubber waterproof gasket for the shield tunnel of Section A and Section B under the constant pressure, it is found that the relationship between creep deformation of gasket and logarithm of time is almost linear and a predictor formula was put forward.The param-eters in the predictor formula fitted by the first creep test data were used to forecast the second test data and the rationality of the predictor formula was validated. Through the comparison among the predictor formula, Kelvin model, and the three-parameter model, it was found that the predictor formula can effectively reflect the com-pression creep behavior of rubber gasket under constant pressure and is the best one to reflect the creep behav-ior among the three models. The research results show that the temperature has less impact on the compression creep behavior of the rubber gasket, which indicates that creep tests can better reflect the durability of the wa-terproof pad than that of stress relaxation tests. Besides, the results may be of practical value for the study and prediction of long-time mechanical behavior and service life of rubber materials.关键词
盾构隧道/试验/蠕变/橡胶密封垫/耐久性Key words
shield tunnel/test/creep/rubber gasket/durability分类
交通工程引用本文复制引用
罗驰,杨新安,雷震宇..盾构隧道橡胶密封垫压缩蠕变试验研究[J].华东交通大学学报,2018,35(2):1-8,8.
