公路隧道减震模型试验及数值模拟
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摘要
文章以嘎隆拉隧道洞口段为原型,拟定了相似关系,选取了围岩和衬砌的相似材料,制作了公路隧道减震试验模型。在试验模型中设置了减震层,选择了振动台模型试验测点的布置位置,制定了加载制度,进行了振动台加载试验;分析了试验结果,并与有限元分析结果进行了对比,定义了减震率;从应力和应变两方面分析了减震层的动力特性及减震效果,得出减震层的设置对隧道减震能起到一定的作用。
Using the portal section of the Galongla tunnel as a prototype,model-scale relationships were set up,the analogous materials of surrounding rocks and lining were chosen,and a model for the vibration attenuation test was created.A buffer layer was set around the model.Furthermore,the loading system was established and a loading test on a vibrating platform was carried out.Meanwhile,the test results were analyzed and compared to those of finite-element analysis and vibration attenuation ratios were determined.The dynamic characteristics and the effect of the vibration attenuation layer were analyzed from two aspects of stresses and strains.Results verified the efficiency of the buffer layer.
Using the portal section of the Galongla tunnel as a prototype,model-scale relationships were set up,the analogous materials of surrounding rocks and lining were chosen,and a model for the vibration attenuation test was created.A buffer layer was set around the model.Furthermore,the loading system was established and a loading test on a vibrating platform was carried out.Meanwhile,the test results were analyzed and compared to those of finite-element analysis and vibration attenuation ratios were determined.The dynamic characteristics and the effect of the vibration attenuation layer were analyzed from two aspects of stresses and strains.Results verified the efficiency of the buffer layer.
引文
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[2]熊良霄,李天斌,杨林德.隧道两种减震措施的数值模拟研究[J].水文地质工程地质,2007,34(4):36-40Xiong Liangxiao,Li Tianbin,Yang Linde.Umerical Analysis of Two-shock Absorption Measures of Tunnel[J].Hydrogeology andEngineering Geology,2007,34(4):36-40
[3]高峰,石玉成,严松宏,等.隧道的两种减震措施研究[J].岩石力学与工程学报,2005,24(2):222-229Gao Feng,Shi Yucheng,Yan Songhong,etc.Study of Two Shock Absorption Measures in Tunnel[J].Chinese Journal of RockMechanics and Engineering,2005,24(2):222-229
[4]凌燕婷,高波.高烈度地震区双线公路隧道减震措施研究[J].隧道建设,2008,28(4):412-415Ling Yanting,Gao Bo.Study on Shock Absorption Measures for Double-lane Highway Tunnels in High Earthquake IntensityRegions[J].Tunnel Construction,2008,28(4):412-415
[5]林志,蒋树屏,蒋华,等.公路隧道大型振动台抗减震模型试验方案设计[J].公路交通技术,2009,(6):92-95Lin Zhi,Jiang Shuping,Jiang Hua,etc.Design of Test Plan for Aseismic Model of Large-size Vibration Table in High way Tunnel[J].Technology of Highway and Transport,2009,(6):92-95
[6]蒋树屏,蒋华,王晓雯,陈杨,等.高烈度地震区公路隧道洞口段地震响应分析[J].公路,2009,(2):194-198Jiang Shuping,Jiang Hua,Wang Xiaowen,etc.Analysis of Seismic Response in Tunnel Entrance of Highway in Seismic Regionwith Strong Motion[J].Highway,2009,(2):194-198
[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):30-36Lou Menglin,Wang Wenjian,Zhu Tong,etc.Soil Lateral Boundary Effect in Shaking Table Model Test of Soil-structure System[J].Earthquake Engineering and Engineering Vibration,2000,20(4):30-36
[8]杨林德,王国波,郑永来,等.地铁车站结构振动台试验及地震响应的三维数值模拟[J].岩石力学与工程学报,2007,26(8):1538-1545Yang Linde,Wang Guobo,Zheng Yonglai,etc.Shaking Table Test on Metro Station Structure and 3D Numerical Simulation ofSeismic Response[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(8):1538-1545
[9]李育枢,李天斌,王栋,等.黄草坪2#隧道洞口段减震措施的大型振动台模型试验研究[J].岩石力学与工程学报,2009,28(6):1128-1136Li Yushu,Li Tianbin,Wang Dong,etc.Large-scale Shaking Table Test for Vibration-absorption Measures of Portal Section ofHuangcaoping Tunnel No.2[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(6):1128-1136
[10]王明年,崔光耀.高烈度地震区隧道减震模型的建立及其减震效果模型试验研究[J].岩土力学,2010,31(6):1884-1890Wang Mingnian,Cui Guangyao.Establishment of Tunnel Damping Model and Research on Damping Effect with Model Test inHighly Seismic Area[J].Rock and Soil Mechanics,2010,31(6):1884-1890
[11]高丽,陈燕华.基于ANSYS的隧道减震措施及分析[J].石河子大学学报(自然科学版),2008,26(4):495-498Gao Li,Chen Yanhua.Analysis of Shock Absorption Measures of Tunnel based on ANSYS Software[J].Journal of ShiheziUniversity(Natural Science),2008,26(4):495-498
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