高速铁路桥隧搭接结构地震响应振动台试验方法研究
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摘要
振动台模型试验是目前研究复杂结构抗震能力与破坏机理的重要手段之一。为揭示软弱围岩与桥隧搭接结构各部位在地震作用下的动力响应特点、累积损伤效应及动力灾变行为的产生机理和宏细观特征,在考虑不同地震动参数对桥、隧结构动力特性影响的基础上,依据相似理论和模型试验技术,结合既有工程实例开展了高速铁路桥隧搭接结构地震响应振动台模型试验方法研究。同时,分析桥隧搭接振动台模型试验方法的特点,介绍了试验平台及测试方法。试验初步结果表明,提出的试验方法可较好地模拟软弱围岩条件下桥隧搭接结构在地震作用下的动力响应及灾变行为,是一种行之有效且重复可操作性强的试验方法,可供今后同类试验参考。
Shaking table model test is one of the most important methods to study the seismic capacity and failure mechanism of complex structures.In order to reveal the dynamic response characteristics,the induced mechanism,macro or micro characteristics of dynamic responses,cumulative damage effects and dynamic disaster behaviors of the key parts of bridge and tunnel lapped structures in soft or weak surrounding rocks under seismic action,the shaking table test model method of such complex structures in high speed railway was worked out according to the similarity theory and model test technology combined with existing engineering examples in this paper,considering influences to the dynamical characteristics of the tunnel and the bridge structure caused by different ground motion parameters.At the same time,the characteristics of the shaking table model test method for bridge and tunnel lapped structure were analyzed and compared with other research methods,along with the test platform and test methods being introduced.Preliminary test results show that the proposed method can well simulate the seismic dynamic response,damage and catastrophic behavior of bridge-tunnel lapped structure under the condition of weak surrounding rock.,which is an effective and operable test method as reference for future similar tests.Analyses and discussions of test results will be written in another paper.
Shaking table model test is one of the most important methods to study the seismic capacity and failure mechanism of complex structures.In order to reveal the dynamic response characteristics,the induced mechanism,macro or micro characteristics of dynamic responses,cumulative damage effects and dynamic disaster behaviors of the key parts of bridge and tunnel lapped structures in soft or weak surrounding rocks under seismic action,the shaking table test model method of such complex structures in high speed railway was worked out according to the similarity theory and model test technology combined with existing engineering examples in this paper,considering influences to the dynamical characteristics of the tunnel and the bridge structure caused by different ground motion parameters.At the same time,the characteristics of the shaking table model test method for bridge and tunnel lapped structure were analyzed and compared with other research methods,along with the test platform and test methods being introduced.Preliminary test results show that the proposed method can well simulate the seismic dynamic response,damage and catastrophic behavior of bridge-tunnel lapped structure under the condition of weak surrounding rock.,which is an effective and operable test method as reference for future similar tests.Analyses and discussions of test results will be written in another paper.
引文
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[9]陈星烨,马晓燕,宋建中.大型结构试验模型相似理论分析与推导[J].长沙交通学院学报,2004,20(1):11-14.CHEN Xingye,MA Xiaoyan,SONG Jianzhong.The Comparability Analysis and Deduction of a Large Structure Test Model[J].Journal of Changsha Communications University,2004,20(1):11-14.
[10]王戍平.破碎围岩隧道的模拟试验研究[D].杭州:浙江大学,2004.
[11]陈国兴,庄海洋,程绍革,等.土-地铁隧道动力相互作用的大型振动台试验:试验方案设计[J].地震工程与工程振动,2006,26(6):178-183.CHEN Guoxing,ZHUANG Haiyang,CHENG Shaoge,et al.A Large Scale Shaking Table Test for Dynamic Soilmetro Tunnel Interaction:Test Scheme[J].Journal of Earthquake and Engineering Vibration,2006,26(6):178-183.
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[13]刘鸿文.材料力学[M].北京:高等教育出版社,2003.
[14]裘伯永,盛兴旺,乔建东,等.桥梁工程[M].北京:中国铁道出版社,2000.
[15]王毅才.隧道工程(上册)[M].2版.北京:人民交通出版社,2008.
[16]褚怀保,杨小林,叶红宇,等.隧道衬砌混凝土爆破损伤累积规律试验研究[J].铁道学报,2018,40(3):132-136.CHU Huaibao,YANG Xiaolin,YE Hongyu,et al.Experimental Study on Blasting Damage Accumulation Law of Tunneling Concrete[J].Journal of the China Railway Society,2018,40(3):132-136.
[2]孙广臣,傅鹤林,巢万里.桥隧搭接工程多源损伤及车辆冲击模型试验研究[J].振动与冲击,2013,32(2):115-123.SUN Guangchen,FU Helin,CHAO Wanli.Model Tests for Multi-source Damages and Vehicle Impacts of a Bridge and Tunnel Lap Joint Project[J].Journal of Vibration and Shock,2013,32(2):115-123.
[3]丁浩,蒋树屏,程崇国,等.桥隧混合异型隧道结构设计[J].建筑监督检测与造价,2009,2(11/12):58-62.DING Hao,JIANG Shuping,CHENG Chongguo,et al.The Design of Mixed-shaped Tunnel Bridge and Tunnel Structure[J].Supervision Test and Cost of Construction,2009,2(11/12):58-62.
[4]康帅,楼梦麟,殷琳.不同地震波输入机制下的结构振动台模型试验[J].同济大学学报(自然科学版),2011,39(9):1273-1279.KANG Shuai,LOU Menglin,YIN Lin.Different Input Mechanism of Seismic on Shaking Table Test[J].Journal of Tongji University(Natural Science),2011,39(9):1273-1279.
[5]王帅帅,高波,周裕,等.隧道洞口含软弱夹层仰坡振动台试验研究[J].岩石力学与工程学报,2015,34(S1):2699-2705.WANG Shuaishuai,GAO Bo,ZHOU Yu,et al.Shaking Table Test on Tunnel Front Slope with Weak Intercalation[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(S1):2699-2705.
[6]侯森,陶连金,赵旭,等.不同加载方向的山岭隧道洞口段地震响应振动台模型试验[J].中南大学学报(自然科学版),2016,47(3):994-1001.HOU Sen,TAO Lianjin,ZHAO Xu,et al.Shaking Table Test for Dynamic Response in Portal Section of Mountain Tunnel Based on Different Vibration Directions[J].Journal of Central South University(Science and Technology),2016,47(3):994-1001.
[7]杨俊杰.相似理论与结构模型试验[M].武汉:武汉理工大学出版社,2005:38-46.
[8]魏峰,张志方,高亮.地震作用下车辆-轨道-桥梁系统振动台台阵试验与列车预警速度阈值研究[J].铁道学报,2018,40(3):101-106.WEI Feng,ZHANG Zhifang,GAO Liang.Study on Shaking Table Array Test of HSR Train-track-bridge System under Seismic Action and Velocity Threshold of Earthquake Early Warning[J].Journal of the China Railway Society,2018,40(3):101-106.
[9]陈星烨,马晓燕,宋建中.大型结构试验模型相似理论分析与推导[J].长沙交通学院学报,2004,20(1):11-14.CHEN Xingye,MA Xiaoyan,SONG Jianzhong.The Comparability Analysis and Deduction of a Large Structure Test Model[J].Journal of Changsha Communications University,2004,20(1):11-14.
[10]王戍平.破碎围岩隧道的模拟试验研究[D].杭州:浙江大学,2004.
[11]陈国兴,庄海洋,程绍革,等.土-地铁隧道动力相互作用的大型振动台试验:试验方案设计[J].地震工程与工程振动,2006,26(6):178-183.CHEN Guoxing,ZHUANG Haiyang,CHENG Shaoge,et al.A Large Scale Shaking Table Test for Dynamic Soilmetro Tunnel Interaction:Test Scheme[J].Journal of Earthquake and Engineering Vibration,2006,26(6):178-183.
[12]KYRIAZIS Pitilakis,GRIGORIOS Tsinidis,ANDREA Leanza,et al.Seismic Behaviour of Circular Tunnels Accounting for Above Ground Structures Interaction Effects[J].Soil Dynamics and Earthquake Engineering,2014,67:1-15.
[13]刘鸿文.材料力学[M].北京:高等教育出版社,2003.
[14]裘伯永,盛兴旺,乔建东,等.桥梁工程[M].北京:中国铁道出版社,2000.
[15]王毅才.隧道工程(上册)[M].2版.北京:人民交通出版社,2008.
[16]褚怀保,杨小林,叶红宇,等.隧道衬砌混凝土爆破损伤累积规律试验研究[J].铁道学报,2018,40(3):132-136.CHU Huaibao,YANG Xiaolin,YE Hongyu,et al.Experimental Study on Blasting Damage Accumulation Law of Tunneling Concrete[J].Journal of the China Railway Society,2018,40(3):132-136.