穿越断层隧道振动台模型试验研究
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摘要
以西藏某复杂隧道工程为背景,开展了穿越断层隧道振动台模型试验研究。从试验模型相似比、模型箱设计和边界处理、模型制作、测点布置及地震波加载等方面,详细地介绍了试验方案。试验重点观察在地震作用下穿越断层隧道动力响应规律及特征。试验结果分析表明,穿越断层隧道和均质围岩隧道地震动力响应规律有相似之处,随着地震波的向上传播,岩土体地震响应增大;断层处衬砌破坏严重;断层对地震波在岩土体内的传播有一定影响。
Based on the background of a complex tunnel constructed in Tibet,a large-scale shaking table test is accomplished to study the seismic responses of the tunnel through fault.The paper introduces the test including the decision of model similarity ratio,the design of model box and the treatment of boundary,the making of model,the layout of monitored points and the input scheme of seismic wave and so on.The test focuses on the rule and character of the dynamic response of the tunnel through fault.From the test,it is concluded that there are some similarities in seismic response between the tunnel through fault and the tunnel through homogeneous rock.With seismic wave upward propagating,seismic response of rock and soil is increasing and the tunnel lining in fault is damaged severely.There is a certain influence on seismic wave propagation because of fault.
Based on the background of a complex tunnel constructed in Tibet,a large-scale shaking table test is accomplished to study the seismic responses of the tunnel through fault.The paper introduces the test including the decision of model similarity ratio,the design of model box and the treatment of boundary,the making of model,the layout of monitored points and the input scheme of seismic wave and so on.The test focuses on the rule and character of the dynamic response of the tunnel through fault.From the test,it is concluded that there are some similarities in seismic response between the tunnel through fault and the tunnel through homogeneous rock.With seismic wave upward propagating,seismic response of rock and soil is increasing and the tunnel lining in fault is damaged severely.There is a certain influence on seismic wave propagation because of fault.
引文
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[2]楼梦麟,王文剑,马恒春,等.土-桩-结构相互作用体系的振动台模型试验[J].同济大学学报,2001,29(7):763-768.LOU Meng-lin,WANG Wen-jian,MA Heng-chun,et al.Study on soil-pile-structure interaction system by shakingtable model test[J].Journal of Tongji University,2001,29(7):763-768.
[3]陶连金,王沛霖,边金.典型地铁车站结构振动台模型试验[J].北京工业大学学报,2006,32(9):798-801.TAO Lian-jin,WANG Pei-lin,BIAN Jin.A shaking tablemethod on the representative subway station structure[J].Journal of Beijing University of Technology,2006,32(9):798-801.
[4]陈国兴,庄海洋,杜修力,等.土-地铁车站结构动力相互作用大型振动台模型试验研究[J].地震工程与工程振动,2007,27(2):171-176.CHEN Guo-xing,ZHUANG Hai-yang,DU Xiu-li,et al.Analysis of large-scale shaking table test of dynamicsoil-subway station interaction[J].EarthquakeEngineering and Engineering Vibration,2007,27(2):171-176.
[5]林皋,朱彤,林蓓.结构动力模型试验的相似技巧[J].大连理工大学学报,2000,40(1):1-8.LIN Gao,ZHU Tong,LIN Bei.Similarity technique fordynamic structural model test[J].Journal of DalianUniversity of Technology,2000,40(1):1-8.
[6]杨林德,季倩倩,郑永来,等.地铁车站结构振动台试验中模型箱设计的研究[J].岩土工程学报,2004,26(1):75-78.YANG Lin-de,JI Qian-qian,ZHENG Yong-lai,et al.Study on design of test box in shaking table test forsubway station structure in soft soil[J].Chinese Journalof Geotechnical Engineering,2004,26(1):75-78.
[7]楼梦麟,王文剑,朱彤,等.土-结构体系振动台模型试验中土层边界影响问题[J].地震工程与工程振动,2000,20(4):30-36.LOU Meng-lin,WANG Wen-jian,ZHU Tong,et al.Soillateral boundary effect in shaking table model test ofsoil-structure system[J].Earthquake Engineering andEngineering Vibration,2000,20(4):30-36.
[8]陈清军,赵云峰,王汉东,等.振动台模型试验中地基土域的数值模拟[J].力学季刊,2002,23(3):407-411.CHEN Qing-jun,ZHAO Yun-feng,WANG Han-dong,et al.Numerical simulation for soil domain in shakingtable model test[J].Chinese Quarterly of Mechanics,2002,23(3):407-411.
[9]吴波,李惠.建筑结构被动控制的理论与应用[M].哈尔滨:哈尔滨工业大学出版社,1997.
[10]杨林德,季倩倩,杨超,等.地铁车站结构振动台试验中传感器位置的优选[J].岩土力学,2004,25(4):619-623.YANG Lin-de,JI Qian-qian,YANG Chao,et al.Optimization of positions of sensors in shaking table testfor subway station structure in soft soil[J].Rock and SoilMechanics,2004,25(4):619-623.
[11]季倩倩.地铁车站结构振动台模型试验研究[D].上海:同济大学,2002.
[12]袁文忠.相似理论与静力学模型试验[M].成都:西南交通大学出版社,1998.
[13]庄海洋.土-地下结构非线性动力相互作用及其大型振动台试验研究[D].南京:南京工业大学,2006.
[14]徐志英,施善云.土与地下结构动力相互作用的大型振动台试验与计算[J].岩土工程学报,1993,(4):1-7.XU Zhi-ying,SHI Shan-yun.Large-sized shaking tabletest and calculation for soil-substructure dynamicinteraction[J].Chinese Journal of GeotechnicalEngineering,1993,(4):1-7.
[15]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 ofsoil-metro station structure under near-and-far fieldground motions[J].Rock and Soil Mechanics,2010,31(12):3733-3740.
[16]蒋良潍,姚令侃,吴伟,等.传递函数分析在边坡振动台模型试验的应用探讨[J].岩土力学,2010,31(5):1368-1374.JIANG Liang-wei,YAO Ling-kan,WU Wei,et al.Transfer function analysis of earthquake simulationshaking table model test of side slopes[J].Rock and SoilMechanics,2010,31(5):1368-1374.
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