岩土力学2012，Vol.33Issue(1)：115-119,5.
隧道衬砌结构三轴压缩蠕变特性试验研究
Experimental studies of triaxial compression creep characters of tunnel lining structure
曾杰 1靳晓光 2张永兴1
作者信息
- 1. 重庆大学土木工程学院,重庆400045
- 2. 重庆大学山地城镇建设与新技术教育部重点实验室,重庆400030
- 折叠
摘要
Abstract
The triaxial compression creep test on concrete specimens of tunnel lining structure is performed by the MTS-815 hydraulic servo system. The stage of accelerating creep appears when the ratio of compression creep strength to compressive strength is about 0.85. A combined viscoelastic plasticity model is developed after the characteristics of concrete creep deformation were analyzed, which can be used to describe the creep behavior and whole creep process of the tunnel lining structure. The combined model is characterized by a visco-elastoplastic deviatoric behavior and an elastoplastic volumetric behavior. The viscoelastic constitutive law corresponds to the Burger model, and the plastic constitutive law corresponds to a Mohr-Coulomb model. The characteristics of viscoelastic plasticity can be described by the combined model. The problem which the typical Burgers model only can be used to describe viscoelasticity creep is resolved perfectly. In addition, the methods to solve triaxial compression creep model parameters are given and the parameters of tunnel lining structure are determined.关键词
衬砌结构/三轴蠕变试验/蠕变模型/蠕变参数Key words
lining structure/triaxial compression creep test/creep model/creep parameter分类
建筑与水利引用本文复制引用
曾杰,靳晓光,张永兴..隧道衬砌结构三轴压缩蠕变特性试验研究[J].岩土力学,2012,33(1):115-119,5.
