[1] Wang Xiequn, Wang Zhao, Huang Jie, Wang Junqi, et al. Finite element analyses of Wanjiazhai water transmissiontunnel excavation and service [J]. Journal of Southeast University (English Edition), 2003, 19 (4): 387-391. [doi:10.3969/j.issn.1003-7985.2003.04.018]

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Finite element analyses of Wanjiazhai water transmissiontunnel excavation and service()

万家寨引水隧洞成洞和运行的有限元分析

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

19

Issue:

2003 4

Page:

387-391

Research Field:

Civil Engineering

Publishing date:

2003-12-30

Info

Title:

Finite element analyses of Wanjiazhai water transmissiontunnel excavation and service

万家寨引水隧洞成洞和运行的有限元分析

Author(s):

Wang Xiequn¹, Wang Zhao², Huang Jie², Wang Junqi²

¹College of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
²School of Civil Engineering, Wuhan University, Wuhan 430072, China

王协群¹, 王钊², 黄杰², 王俊奇²

¹武汉理工大学土木工程与建筑学院, 武汉 430070; ²武汉大学土木建筑工程学院, 武汉 430072

Keywords:

tunnel;  loess;  nonlinear finite element method;  loading and unloading test;  loosening earth pressure;  stress;  strain

隧洞;  黄土;  非线性有限元方法;  加卸载实验;  松动土压力;  应力;  应变

PACS:

TU43

DOI:

10.3969/j.issn.1003-7985.2003.04.018

Abstract:

This paper is devoted to the nonlinear stress and strain analysis of tunneling and working conditions of Wanjiazhai Division Project No.7 Tunnel in Shanxi province of China. The initial geological stress of loess was simulated by grading fill; the theory of unloading proposed by Duncan and boundary stress of elasticity were used to calculate the excavation of the tunnel; Goodman joint elements were applied to simulate the joints of the liners; both loading and unloading tests have been performed to determine the parameters of Duncan-Chang’s model and the calculated results were compared; Terzaghi’s theory on loosening earth pressure was applied. Many working conditions were analyzed and some reasonable results were obtained. Based on the analyses, reparative measures were proposed and completed. The tunnel has functioned well since October, 2001.

对山西省万家寨引黄入晋工程总干线7号隧洞开挖和蓄水运行的几种工况进行了非线性有限元分析.主要内容包括采用分级堆填过程模拟风积黄土层的初始应力场;应用Duncan释放荷载思想和弹性理论面力公式进行开挖卸荷计算;采用Goodman节理单元模拟衬砌管片的接缝;应用Terzaghi松动土压力理论施加管片上压力;确定土的Duncan-Chang 模型参数时, 分别取原状土进行了卸载和加载试验, 并比较了用2种试验获得的模型参数进行有限元变形分析的结果, 多种工况的有限元分析得到了一些合理的结果.

References:

[1] Duncan J M, Seed R B, Wong K S, et al. A computer program for finite element analysis of dams [R]. Geotechnical Engineering Research Report No.SU/GT/84-3. Stanford University, 1984.
[2] Timoshenko S P, Goodier J N. Theory of elasticity. 3rd Ed [M]. New York: McGraw-Hill Book Company, 1970.291-349.
[3] Lubliner J. Plasticity theory [M]. New Jersey: Prentice-Hall, 1998.280-283.
[4] Xu Zhilun. Mechanics of elasticity [M]. Beijing: The People’s Educational Press, 1979.33-34.(in Chinese)
[5] Terzaghi K. Stress distribution in dry and in saturated sand above a yielding trap-door [A]. In: Proceedings of 1st Conference of Soil Mechanics and Foundation Engineering [C]. Boston, 1936, 1: 307-316.

Memo

Memo:

Biographies: Wang Xiequn(1971—), female, graduate, lecturer, xq001wang@hotmail.com; Wang Zhao(corresponding author), male, doctor, professor, wazh@public.wh.hb.cn.

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