Experimental study on mechanical behavior of concrete-filled thin-walled steel tube supported in tunnel

被引：3
|
作者：
Hou H. [1 ]
Ma S. [1 ]
Wang Q. [2 ]
Jin Y. [3 ]
Zhu W. [1 ]
Chen L. [1 ]
机构：
[1] School of Civil Engineering, Shandong University, Jinan
[2] Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan
[3] Department of Building Engineering, Mianyang Vocational and Technical College, Mianyang
来源：
Wang, Qi (wangqi@sdu.edu.cn) | 2017年 / Central South University of Technology卷 / 48期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Cementitious grouted sleeve connection; Concrete-filled thin-walled steel tube; Finite element analysis; Support used in tunnel;
D O I：
10.11817/j.issn.1672-7207.2017.05.026
中图分类号：
学科分类号：
摘要：
Five concrete-filled thin-walled steel tubes (CTST) and one steel grid were designed as supports, and they were tested in a cable tunnel in Jinan. Test parameters included thickness of steel tube, connection type of steel tube and concrete-filled in steel tube or not. In addition, the CTST mechanical behaviors were compared with that of the steel grid. The results show that in a short period of time, the CTST support can ensure the stability of surrounding rock and its resistance is superior to the traditional steel grid. With the increase of deformation of the rock and soil in the tunnel, the CTST supports with the new connection have good compression resistance. The absolute strain values of vault, connections and tube foot are larger. The finite element (FE) analysis by ABAQUS program is conducted, the analysis results agree well with the test results. The FE model and parameters are proved to be reliable. It can be applied in the engineering projects. © 2017, Central South University Press. All right reserved.
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页码：1316 / 1325
页数：9
相关论文
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