Experimental design for dynamic centrifuge tests on a subway station structure in liquefied interlayer site
ZHANG Zi-hong1, XU Cheng-shun1, YAN Guan-yu1, DU Xiu-li1, LI Yang2, ZHOU Yan-guo3
1. Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China; 2. China Academy of Railway Sciences Corporation Limited, Urban Rail Train Center of CARS, Beijing 100081, China; 3. Key Laboratory of Soft Soils and Geoenviromental Engineering, Zhejiang University, Hangzhou 310058, China
Abstract:To study the earthquake damage response of a subway station structure in a liquefied interlayer site, a series of dynamic centrifuge tests are carried out using the ZJU400 geotechnical centrifuge facility in Zhejiang University. The test scheme and the process of carrying out the tests are introduced. At the same time, in view of the current situation that there is no precedent for a reference for the preparation of the liquefied interlayer site, many technical details are elaborated, including the preparation of liquefied interlayer site (clay consolidation, sand saturation and assembly of interlayer site),structural waterproof treatment, and releasing initial pore pressure in the sand layer during centrifugal loading. The tests obtain ideal results, thus achieving the experimental goal of studying the earthquake damage response of the subway station structure in the liquefied interlayer site. The introduction to the design process of this test scheme may provide some references for the similar tests in the future.
张梓鸿, 许成顺, 闫冠宇, 杜修力, 李洋, 周燕国. 液化夹层场地地铁车站结构离心机振动台试验方案设计[J]. 岩土工程学报, 2022, 44(5): 879-888.
ZHANG Zi-hong, XU Cheng-shun, YAN Guan-yu, DU Xiu-li, LI Yang, ZHOU Yan-guo. Experimental design for dynamic centrifuge tests on a subway station structure in liquefied interlayer site. Chinese J. Geot. Eng., 2022, 44(5): 879-888.
[1] WOOD J H.Earthquake design of rectangular underground structures[J]. Bulletin of the New Zealand Society for Earthquake Engineering, 2007, 40(1): 1-6. [2] NISHIOKA T, UNJOH S. A simplified evaluation method for the seismic performance of underground common utility boxes[J]. Proceedings of the2003 Pacific Conference on Earthquake Engineering, 2003(55): 1-8. [3] IIDA H, HIROTO T, YOSHIDA N, et al.Damage to Daikai subway station[J]. Soils and Foundations, 1996, 36: 283-300. [4] 中村晋. 地震被害程度の差異に着目した地下鉄の被害要因分析[J]. 土木学会論文集I 巻, 2000, 654(I-52): 335-354. (NAKAMURA Susumu.Analysis of damage factors of subway based on difference of earthquake damage[J]. Proceedings of the Society of Civil Engineering. 2000, 654(I-52): 335-354. (in Japanese)) [5] KONGAI K, KAMIYA H, NISHIYAMA S. Deformation buildup in soils during the Kobe earthquake of1995[J]. Seism. Fault-induced Failures, 2001(1): 81-90. [6] 王胜平, 阎高翔. 南京地铁一号线许府巷—南京站盾构区间地震液化分析[J]. 现代隧道技术, 2001, 38(2): 19-23. (WANG Sheng-ping, YAN Gao-xiang.Analysis on earthquake-caused ground liquefying in shield-driven tunnel section from Xufuxiang Station to Nanjing Station, Nanjing metro[J]. Modern Tunnelling Technology, 2001, 38(2): 19-23. (in Chinese)) [7] 唐军平, 李建强, 孙双祥, 等. 佛山市城市轨道交通二号线南庄站砂土液化分析及处理措施[J]. 路基工程, 2017(1): 189-193, 212. (TANG Jun-ping, LI Jian-qiang, SUN Shuang-xiang, et al.Analysis of sand liquefaction at Nanzhuang Station of Foshan urban rail transit line 2 and treatment measure[J]. Subgrade Engineering, 2017(1): 189-193, 212. (in Chinese)) [8] 蒋清国. 液化地层下地铁工程抗地震液化措施研究[J]. 震灾防御技术, 2015, 10(1): 95-107. (JIANG Qing-guo.Anti-liquefaction measures for subway engineering in liquefiable soil layers[J]. Technology for Earthquake Disaster Prevention, 2015, 10(1): 95-107. (in Chinese)) [9] 左熹, 陈国兴, 王志华, 等. 近远场地震动作用下地铁车站结构地基液化效应的振动台试验[J]. 岩土力学, 2010, 31(12): 3733-3740. (ZUO Xi, CHEN Guo-xing, WANG Zhi-hua, et al.Shaking table test on ground liquefaction effect of soil-metro station structure under near-and-far field ground motions[J]. Rock and Soil Mechanics, 2010, 31(12): 3733-3740. (in Chinese)) [10] 凌道盛, 郭恒, 蔡武军, 等. 地铁车站地震破坏离心机振动台模型试验研究[J]. 浙江大学学报(工学版), 2012, 46(12): 2201-2209. (LING Dao-sheng, GUO Heng, CAI Wu-jun, et al.Research on seismic damage of metro station with centrifuge shaking table model test[J]. Journal of Zhejiang University (Engineering Science), 2012, 46(12): 2201-2209. (in Chinese)) [11] CHIAN S C, MADABHUSHI S P G. Effect of buried depth and diameter on uplift of underground structures in liquefied soils[J]. Soil Dynamics and Earthquake Engineering, 2012, 41: 181-190. [12] CHEN G X, CHEN S, QI C Z, et al.Shaking table tests on a three-arch type subway station structure in a liquefiable soil[J]. Bulletin of Earthquake Engineering, 2015, 13(6): 1675-1701. [13] 安军海, 陶连金, 王焕杰, 等. 可液化场地下盾构扩挖地铁车站结构地震破坏机制振动台试验[J]. 岩石力学与工程学报, 2017, 36(8): 2018-2030. (AN Jun-hai, TAO Lian-jin, WANG Huan-jie, et al.Shaking table experiments on seismic response of a shield-enlarge-dig type subway station structure in liquefiable ground[J]. Chinese Journal of Rock Mechanics and Engineering, 2017, 36(8): 2018-2030. (in Chinese)) [14] LEE C J, WEI Y, CHUANG W Y, et al.Uplift mechanism of rectangular tunnel in liquefied soils[M]. Tokyo: Springer, 2017. [15] ZHUANG H Y, CHEN G X, HU Z H, et al.Influence of soil liquefaction on the seismic response of a subway station in model tests[J]. Bulletin of Engineering Geology and the Environment, 2016, 75(3): 1169-1182. [16] ZHUANG H Y, WANG X, MIAO Y, et al.Seismic responses of a subway station and tunnel in a slightly inclined liquefiable ground through shaking table test[J]. Soil Dynamics and Earthquake Engineering, 2019, 116: 371-385. [17] CHEN S, TANG B Z, ZHAO K, et al.Seismic response of irregular underground structures under adverse soil conditions using shaking table tests[J]. Tunnelling and Underground Space Technology, 2020, 95: 103145. [18] 杜修力, 王刚, 路德春. 日本阪神地震中大开地铁车站地震破坏机理分析[J]. 防灾减灾工程学报, 2016, 36(2): 165-171. (DU Xiu-li, WANG Gang, LU De-chun.Earthquake damage mechanism analysis of dakai metro station by Kobe earthquake[J]. Journal of Disaster Prevention and Mitigation Engineering, 2016, 36(2): 165-171. (in Chinese)) [19] 杜修力, 马超, 路德春, 等. 大开地铁车站地震破坏模拟与机理分析[J]. 土木工程学报, 2017, 50(1): 53-62, 69. (DU Xiu-li, MA Chao, LU De-chun, et al.Collapse simulation and failure mechanism analysis of the Daikai subway station under seismic loads[J]. China Civil Engineering Journal, 2017, 50(1): 53-62, 69. (in Chinese)) [20] 杜修力, 李洋, 许成顺, 等. 1995年日本阪神地震大开地铁车站震害原因及成灾机理分析研究进展[J]. 岩土工程学报, 2018, 40(2): 223-236. (DU Xiu-li, LI Yang, XU Cheng-shun, et al.Review on damage causes and disaster mechanism of Daikai subway station during 1995 Osaka-Kobe Earthquake[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(2): 223-236. (in Chinese)) [21] MA C, LU D C, DU X L, et al.Structural components functionalities and failure mechanism of rectangular underground structures during earthquakes[J]. Soil Dynamics and Earthquake Engineering, 2019, 119: 265-280. [22] XU C S, ZHANG Z H, LI Y, et al.Validation of a numerical model based on dynamic centrifuge tests and studies on the earthquake damage mechanism of underground frame structures[J]. Tunnelling and Underground Space Technology, 2020, 104: 103538. [23] XU C S, ZHANG Z H, LI Y, et al.Seismic response and failure mechanism of underground frame structures based on dynamic centrifuge tests[J]. Earthquake Engineering & Structural Dynamics, 2021, 50(7): 2031-2048. [24] XU Z G, DU X L, XU C S, et al.Simplified equivalent static methods for seismic analysis of shallow buried rectangular underground structures[J]. Soil Dynamics and Earthquake Engineering, 2019, 121: 1-11. [25] 许成顺, 李洋, 杜修力, 等. 上覆土竖向惯性力对浅埋地下框架结构地震损伤反应影响离心机振动台模型试验研究[J]. 土木工程学报, 2019, 52(3): 100-110, 119. (XU Cheng-shun, LI Yang, DU Xiu-li, et al.Dynamic centrifuge tests for influence of vertical inertia force of overburden soil on earthquake damage response of shallow-buried underground frame structures[J]. China Civil Engineering Journal, 2019, 52(3): 100-110, 119. (in Chinese))