Seismic Dynamic Model Tests on Tunnel Lining Passing through the Fault

Abstract:

The seismic behaviors of tunnel lining passing through the fault are studied by means of large-scale shaking table tests under the load of Wolong-seismic wave. The model tunnel is installed into a model box with a length of 3.65 m, width of 1.5 m and height of 1.8 m. The sizes of model and prototype tunnel are designed by using the similar principles with a scale factor of 1:30. As the result shows, under the seismic force load, the tunnel lining has a delay of responding the seismic force when it crosses the faults geological belt. The time is 0.085seconds. Model box amplified table acceleration, the farther the distance from shaking table is, the more obvious amplification is. The seismic force load is horizontal, but the resistance applied by the faults geological belt is weak, resulting relative motion, collision, extrusion etc. so, the tunnel lining appears cracks. It is in accord with investigation conclusions of Wenchuan earthquake. Article also aims at some problems in the experiment such as: boundary effect, model box stiffness etc, and gives some suggestions.

• Periodical: Applied Mechanics and Materials (Volumes 368-370)
• Pages: 1732-1737
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.368-370.1732
• Online since: August 2013
• Authors: Jia Mei Zhou, Qi Yan, Guo Wang Meng
• Keywords: Faults, Model Test, Seismic, Shaking Table, Tunnel Lining

References

[1] Huang Ming. Gao Bo. Wei Lai. Seismic Response of Tunnel Entrance in High Intensity Area[J]Journal Of Seismological Research. 2008. 31(2). 181-185.

[2] Li Tian-bin. Failure Characteristics And Influence Factor Analysis Of Mountain Tunnels At Epicenter Zones Of Great Wenchuan Eeathquake [J].  Journal of Engineering Geology. 2008. 16(6)742-742.

[3] Yu Xiang. Chen Qi-liang. Zhao Yue-tang. Wang Ming-yang. Guo Sheng-bing. The Status Quo and Methods of Antiseismic Research of Underground Structure. [J]. Journal of PLA University of Science and Technology. 2000. 1(5). 63-69.

[4] He Hai-jian. Liu Wei-ning. Wang Ting. Probe into Current Status of Anti-seismic Study on Subway. [J]. China Safety Science Journal. [J]. China Safety Science Journal. 2005. 15(8). 3-7.

[5] Wu Yao-zong. Zhu Ming. Xiao Hai-bo. Experimental Study on Simulating Material of Surrounding Rock in Headrace Tunnel[J]. Subgrade Eng ineering. 2010. (4). 192-193.

[6] Xu Gui-ping. Zhu Wei-dong. Zhang Wei. Summarization of Tunnel SeismicResearch[J]. Highway Construction And Maintenance. 2001. (1). 44-45.

[7] Sheng De-jian. Lv Xi-lin. Research Advances on Simulating Earthquake Shaking Tables and Model Test[J]. Structural Engineers. 2006. 20(6). 55-58.

[8] She Jian. He Chuan. Wang Bo. Wang Yang. Study on Effect of Cavities behind Linings on Bearing Capacity of Tunnel Structure by Model Test. [J]. Journal of Highway and Transportation Research and Development. 2008. 25(1)104-109.

[9] Wu Cheng-gang. He chuan. Li Xun. Zhang Feng. High Stress and the tunnel structural mechanics model test [J]. Modern Tunnelling Technology. 2008. Z250-255.

[10] Xu Guang-xing. Yao Ling-kai. Gao Zhao-ning. Li Zhao-hong. Large-Scale Shaking Table Model Test Study On Dynamic Characteristics And Dynamic Responses Of Slope[J]. Chinese Journal of Rock Mechanics and Engineering. 2008. 27(3). 624-632.

[11] Meng Shang-jiu. Liu Han-long. Yuan Xiao-ming. etal. Experimental study on the mechanism of earthquake-induced differentialsettlement of building on liquescent subsoil[J]. Chinese Journal of Rock Mechanics and Engineering. 2005. 24(11). 1 978–1 985.

[12] Liu Xiao-sheng. Wang Zhong-ning. Wang Xiao-gang. et al. Shaking table model testand dynamic analysis of core faceplate rockfill dam[M]. Beijing. China Water Power Press. (2005).

[13] Chi Shi-chun. Lin Shao-shu. Validation of similitude laws for dynamic structural model test. [J]. World Earthquake Engineering. 2004. 20(4). 11-14.