Abstract：In order to study the dynamic response and failure mechanism of mountain tunnel across fault zone and portal section under earthquake，a large-scale shaking table test was designed and carried out according to the Kangding—Zheduoshan tunnel project. Through this test，the dynamic response and failure mechanism of tunnel lining under different surrounding rock conditions were compared and analyzed. The research results show that：in this shaking table test，the acceleration，dynamic earth pressure and strain responses of tunnel lining were mainly affected by the surrounding rock conditions. The quality of surrounding rock around tunnel lining is poor，and its seismic response is strong. Under the action of three-dimensional seismic wave，the PGA amplification coefficient of tunnel lining decreases gradually with the increase of seismic wave amplitude，and the difference between dynamic earth pressure and strain increases gradually. The tunnel lining is under eccentric stress，and the conjugate 45° of cross section is the main stress direction. In addition，the longitudinal failure of lining structure develops from the portal to the deep surrounding rock，and each section of lining has the same failure mechanism. The failure process develops from“inverted arch→arch foot→arch shoulder→arch crown”. By comparing and analyzing the final failure modes of tunnel lining，it is found that the seismic damage of lining structure in portal section and fault zone section is more serious，and the seismic damage of substructure is obviously more serious than that of superstructure. Therefore，in the same tunnel project，it is necessary to pay attention to the seismic fortification of the mountain tunnel across the fault zone and the portal section，and focus on the seismic design of the lining inverted arch，arch foot and other parts.
[1] TSINIDIS G，SILVA F D，ANASTASOPOULOS I，et al. Seismic behaviour of tunnels: From experiments to analysis[J]. Tunnelling and Underground Space Technology，2020，99：1–20.
[2] ASAKURA T. Mountain tunnels performance in the 1995 Hyogoken-Nanbu earthquake[C]// The 2nd International Symposium on Recent Advances in Exploration Geophysics. Kyoto，Japan：[s. n.]，1997：173–182.
[3] WANG W L，WANG T T，SU J J，et al. Assessment of damage in mountain tunnels due to the Taiwan Chi-Chi Earthquake[J]. Tunneling and Underground Space Technology，2001，16(3)：133–150.
[4] WANG Z Z，GAO B，JIANG Y J，et al. Investigation and assessment on mountain tunnels and geotechnical damage after the Wenchuan earthquake[J]. Science in China Series E：Technological Sciences，2009，52(2)：546–558.
[5] SHARMA S，JUDD W R. Underground opening damage from earthquakes[J]. Engineering Geology，1991，30(3)：263–276.
[6] 崔光耀，王明年，于 丽，等. 汶川地震断层破碎带段隧道结构震害分析及震害机理研究[J]. 土木工程学报，2013，46(11)：122–127. (CUI Guangyao，WANG Mingnian，YU Li，et al. Study on the characteristics and mechanism of seismic damage for tunnel structures on fault rupture zone in Wenchuan seismic disastrous area[J]. China Civil Engineering Journal，2013，46(11)：122–127.(in Chinese))
[7] KOURETZIS G P，ANDRIANOPOULOS K I，SLOAN S W，et al. Analysis of circular tunnels due to seismic P-wave propagation，with emphasis on unreinforced concrete liners[J]. Computers and Geotechnics，2014，55：187–194.
[8] 刘晶波，王东洋，谭 辉，等. 隧道纵向地震反应分析的反应位移法对比[J]. 振动与冲击，2019，38(21)：104–111.(LIU Jingbo，WANG Dongyang，TAN Hui，et al. Response displacement methods for longitudinal seismic response analysis of tunnel structures[J]. Journal of Vibration and Shock，2019，38(21)：104–111.(in Chinese))
[9] 刘 云，赖 杰，辛建平，等. 穿越断层隧道地震响应规律动力对比试验研究[J]. 岩土力学，2019，40(12)：4 693–4 702.(LIU Yun，LAI Jie，XIN Jianping，et al. Comparison test of dynamic response characteristics of the tunnels through fault[J]. Rock and Soil Mechanics，2019，40(12)：4 693–4 702. (in Chinese))
[10] SHEN Y S，WANG Z Z，YU J，et al. Shaking table test on flexible joints of mountain tunnels passing through normal fault[J]. Tunnelling and Underground Space Technology，2020，98：1–12.
[11] 何 川，李 林，张 景，等. 隧道穿越断层破碎带震害机理研究[J]. 岩土工程学报，2014，36(3)：427–434.(HE Chuan，LI Lin，ZHANG Jing，et al. Seismic damage mechanism of tunnels through fault zones[J]. Chinese Journal of Geotechnical Engineering，2014，36(3)：427–434.(in Chinese))
[12] 耿 萍，何 悦，何 川，等. 穿越断层破碎带隧道合理抗震设防长度研究[J]. 岩石力学与工程学报，2014，33(2)：358–365.(GENG Ping，HE Yue，HE Chuan，et al. Research on reasonable aseismic fortified length for tunnel through fault fracture zone[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(2)：358–365. (in Chinese))
[13] 袁 勇，禹海涛，燕 晓，等. 超长沉管隧道多点振动台试验模拟与分析[J]. 中国公路学报，2016，29(12)：157–165.(YUAN Yong，YU Haitao，YAN Xiao，et al. Multi-point shaking table test simulation and analysis of a super-long immersed tunnel[J]. China Journal of Highway and Transport，2016，29(12)：157–165.(in Chinese))
[14] WEN Y M，XIN CL，SHEN Y S，et al. The seismic response mechanisms of segmental lining structures applied in fault-crossing mountain tunnel: The numerical investigation and experimental validation[J]. Soil Dynamics and Earthquake Engineering，2021，151：1–20.
[15] XU H，LI T B，XIA L，et al. Shaking table tests on seismic measures of a model mountain tunnel[J]. Tunnelling and Underground Space Technology，2016，60：197–209.
[16] ZHANG Y S，YAO X，YU K，et al. Late-Quaternary slip rate and seismic activity of the Xianshuihe fault zone in southwest China[J]. Acta Seismologica Sinica，2016，90(2)：525–536.
[17] 马 骏，周本刚，王明明，等. 鲜水河断裂带折多塘断裂西北段全新世活动的地质地貌依据[J]. 地震地质，2020，42(5)：1 021–1 037. (MA Jun，ZHOU Bengang，WANG Mingming，et al. Geological and geomorphic evidences for the holocene activity of the NW Zheduotang branch within the Xianshuihe fault system[J]. Seismology and Geology，2020，42(5)：1 021–1 037.(in Chinese))
[18] 杨长卫，张 良，董陇军，等. 基于振动台试验的顺层及反倾岩质斜坡地震动响应差异性研究[J]. 岩石力学与工程学报，2022，41(2)：271–281.(YANG Changwei，ZHANG Liang，DONG Longjun，et al. Research on the difference of dynamic response between bedding and toppling rock slopes based on shaking table test[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(2)：271–281.(in Chinese))
[19] YANG C W，ZHANG L，LIU Y，et al. Shaking table test on dynamic response of bedding rock slopes with weak structural plane under earthquake[J]. Frontiers in Physics，2020，(8)：1–10.
[20] 顾大钊. 相似材料与相似模型[M]. 徐州：中国矿业大学出版社，1995：32–48.(GUO Dazhao. Similar material and similar model[M]. Xuzhou：China University of Mining and Technology Press，1995：32–48.(in Chinese))
[21] 闫高明，申玉生，高 波，等. 穿越黏滑断层分段接头隧道模型试验研究[J]. 岩土力学，2019，40(11)：4 450–4 458.(YAN Gaoming，SHEN Yusheng，GAO Bo，et al. Experimental study of stick-slip fault crossing segmental tunnels with joints[J]. Rock and Soil Mechanics，2019，40(11)：4 450–4 458.(in Chinese))
[22] WANG J N. Seismic design of tunnels：a state-of-the-art approach[M]. New York：Parsons，Brinckerhoff，Ouade and Douglas Inc.，1993：54–62.
[23] 陈志荣，宋丹青，刘晓丽，等. 隧道口顺层斜坡地震动力响应特征振动台试验研究[J]. 地球科学，2022，47(6)：2 069–2 080.(CHEN Zhirong，SONG Danqing，LIU Xiaoli，et al. Study on seismic dynamic response characteristics of a layered slope at the tunnel entrance using shaking table test[J]. Earth Science，2022，47(6)：2 069–2 080.(in Chinese))
2023, Vol. 42 
