Analysis of Nonlinear Seismic Response and Stability for Tunnel Portal Slope

Abstract:

The nonlinear seismic response of transverse slope at secund tunnel portal is first studied with dynamic finite element method under conditions of horizontal, vertical and both horizontal and vertical input, and then the dynamic safety factors of the most dangerous slide face which vary with time are researched after adding the field of static stress. For the purpose of dynamic stability evaluation, the total average dynamic safety factor and the permanent displacement are bring forward and used in this paper. At last, the model of dynamic response analysis and stability evaluation is built for transverse slope at secund tunnel portal.

• Periodical: Applied Mechanics and Materials (Volume 160)
• Pages: 263-267
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.160.263
• Online since: March 2012
• Authors: Y.S. Li, T.B. Li
• Keywords: Dynamic Finite Element Method, Nonlinear Seismic Response, Stability Analysis, Tunnel Portal Slope

References

[1] Dowding C.H. and Rozen,A., Damage to rock tunnels from earthquake shaking, Journal of the Geotechnical Engineering Division, ASCE, Vol. 104(1): 175-191.

DOI: 10.1061/ajgeb6.0000580

[2] Liu Hongshuai, Bo Jingshan, Liu Dedong. Review on study of seismic stability analysis of rock-soil slopes[J]. Earthquake Engineering and Engineering Vibration, 2005, Vol. 25(1): 164-171 (In Chinese).

[3] Zhang Jianhai, Fang Jinwei, He Jiangda. The solution of dynamic safety factor of slope & dam base by rigid body spring element method[J]. Chinese Journal of Rock Mechanics and Engineering, 1999, Vol. 18(4): 387-391 (In Chinese).

[4] Zhang Boyan, Chen Houqun, Du Xiuli, et al. Arch dam abutment aseismatic stability analysis[J]. Journal of hydraulic engineering, 2000, (11): 55-59 (In Chinese).

[5] Zhao Jianming, Chen Ning, Chang Yaping. Stability analysis for slope of earth-rock dam under seismic load[C]/ Proceedings of Theory and Application in Geoenvironmental Engineering. Shanghai, 2002: 239-243 (In Chinese).

[6] Liu Hanglong, Fei Kang, Gao Yufeng. Time history analysis method of slope seismic stability[J]. Rock-soil Mechanics, 2003, Vol. 24(4): 553-536(In Chinese).

[7] Pan Changshi. Numerical Method of Tunnel Mechanics (China Railway Science Press, Chian 1995)(In Chinese).

[8] GEO-SLOPE International Ltd. 2004. Manual of QUAKE/W for Finite Element Dynamic Earthquake Analysis, Version 6. 02. Calgary, MN: GEO-SLOPE International Ltd.

[9] Newmark N.M. Effect of earthquake on dams and embankments[J]. Geotechnique, 1965, Vol. 15(20): 139-159.

[10] Zhou Rongjun, He Yulin. Report of seismic safety evaluation for tunnel and bridge construction site on new line of Huangcaoping of highway segment from Haizi Mountain to Zhubalong of State Highway G318[R]. Chengdu: Institute of Engineering Earthquake, Sichuan Earthquake Adminstration, 2002 (In Chinese).

[11] Men Yuming, Peng Jianbing, Li Xunchang, et al. Research on vibration test of models for dynamic stability of rock slope with layered structures[J]. World Earthquake Engineering, 2004, Vol. 20(4): 131-136 (In Chinese).