高烈度地震区隧道设置减震层的减震原理研究
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摘要
现场调查表明:汶川大地震震区隧道结构受到比较严重的破坏,严重影响了灾区救援和重建,可见传统的隧道抗震技术已不能保证高烈度地震区隧道结构的安全,为此利用波动理论对隧道减震层减震模型进行研究,推导地震波沿隧道结构轴线方向作用下的减震计算公式,研究减震层厚度、减震层弹性模量、减震层刚度和地震波输入频率等参数对隧道减震效果的影响,并通过室内模型试验验证隧道减震层减震模型的减震效果。研究成果可为高烈度地震区隧道结构减震设计提供参考。
Field investigation revealed that tunnel structures were seriously damaged in the Wenchuan earthquake,seriously affecting disaster relief and post-disaster reconstruction.Traditional anti-seismic technology can not guarantee the safety of tunnel structures.This paper presents a study of the damping model of tunnel shock absorption layer by using wave theory.The calculation formula of tunnel damping in the axial direction was derived,and the thickness,elastic modulus and stiffness of shock absorption layer,and the effect of seismic input frequency on damping are studied.Through laboratory model test,the damping effect is proved.The results may provide reference for earthquake-reduction design of tunnel structures in highly seismic areas.
Field investigation revealed that tunnel structures were seriously damaged in the Wenchuan earthquake,seriously affecting disaster relief and post-disaster reconstruction.Traditional anti-seismic technology can not guarantee the safety of tunnel structures.This paper presents a study of the damping model of tunnel shock absorption layer by using wave theory.The calculation formula of tunnel damping in the axial direction was derived,and the thickness,elastic modulus and stiffness of shock absorption layer,and the effect of seismic input frequency on damping are studied.Through laboratory model test,the damping effect is proved.The results may provide reference for earthquake-reduction design of tunnel structures in highly seismic areas.
引文
[1]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):1884-1890(Wang Mingnian,Cui Guangyao.Establishmentof tunnel damping model and research on damping effectwith model test in highly seismic area[J].Rock and SoilMechanics,20103,1(6):1884-1890(in Chinese))
[2]孙铁成.双洞错距山岭隧道洞口段地震动力响应及减震措施研究[D].成都:西南交通大学,2006(SunTiecheng.Study on earthquake responses and vibration-absorption measures for two-tunnels of mountain tunnel withstaggered space[D].Chengdu:Southwest JiaotongUniversity,2006(in Chinese))
[3]王峥峥.跨断层隧道结构非线性地震损伤反应分析[D].成都:西南交通大学,2007(Wang Zhengzheng.Nonlinear seismic damage response of tunnel structureacross fault[D].Chengdu:Southwest Jiaotong University,2007(in Chinese))
[4]李利平,李术才,张庆松,等.浅埋大跨隧道施工爆破监测与减震技术[J].岩土力学,2008,29(8):2292-2296(Li Liping,Li Shucai,Zhang Qingsong,et al.Monitoringblasting excavation of shallow-buried large-span tunnel andvibration reduction technology[J].Rock and SoilMechanics,2008,29(8):2292-2296(in Chinese))
[5]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):222-229(GaoFeng,Shi Yucheng,Yan Songhong,et al.Study of twoshock absorption measures in tunnel[J].Chinese Journalof Rock Mechanics and Engineering,2005,24(2):222-229(in Chinese))
[6]熊良宵,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):36-40(Xiong Liangxiao,Li Tianbin,Yang Linde.Numericalanalysis of two-shock absorption measures of tunnel[J].Hydrogeology and Engineering Geology,2007,34(4):36-40(in Chinese))
[7]索然绪,李乐洲,邓彬.双连拱隧道两种减震措施研究[J].公路隧道,2008(4):15-18
[8]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):495-498(Gao Li,Chen Yanhua.Analysis of shock absorptionmeasures in tunnels based on ANSYS software[J].Journalof Shihezi University:Natural Science Edition,2008,26(4):495-498(in Chinese))
[9]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):412-415(Ling Yanting,Gao Bo.Study on shock absorption measures for double-lanehighway tunnels in high earthquake intensity regions[J].Tunnel Construction,2008,28(4):412-415(in Chinese))
[10]袁帅.浅埋隧道地震动力响应分析及减震措施研究[D].武汉:武汉理工大学,2008(Yuan Shuai.Seismicresponse analysis of shallow-depth tunnel and vibrationabsorption measure[D].Wuhan:Wuhan University ofTechnology,2008(in Chinese))
[11]王明年,关宝树.高烈度地震区地下结构减震原理研究[J].工程力学2,000(增):295-299王明年(1965-),男,博士,教授。主要从事隧道与地下工程方面的教学与研究。崔光耀(1983-),男,博士研究生。主要从事隧道与地下工程研究。
[2]孙铁成.双洞错距山岭隧道洞口段地震动力响应及减震措施研究[D].成都:西南交通大学,2006(SunTiecheng.Study on earthquake responses and vibration-absorption measures for two-tunnels of mountain tunnel withstaggered space[D].Chengdu:Southwest JiaotongUniversity,2006(in Chinese))
[3]王峥峥.跨断层隧道结构非线性地震损伤反应分析[D].成都:西南交通大学,2007(Wang Zhengzheng.Nonlinear seismic damage response of tunnel structureacross fault[D].Chengdu:Southwest Jiaotong University,2007(in Chinese))
[4]李利平,李术才,张庆松,等.浅埋大跨隧道施工爆破监测与减震技术[J].岩土力学,2008,29(8):2292-2296(Li Liping,Li Shucai,Zhang Qingsong,et al.Monitoringblasting excavation of shallow-buried large-span tunnel andvibration reduction technology[J].Rock and SoilMechanics,2008,29(8):2292-2296(in Chinese))
[5]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):222-229(GaoFeng,Shi Yucheng,Yan Songhong,et al.Study of twoshock absorption measures in tunnel[J].Chinese Journalof Rock Mechanics and Engineering,2005,24(2):222-229(in Chinese))
[6]熊良宵,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):36-40(Xiong Liangxiao,Li Tianbin,Yang Linde.Numericalanalysis of two-shock absorption measures of tunnel[J].Hydrogeology and Engineering Geology,2007,34(4):36-40(in Chinese))
[7]索然绪,李乐洲,邓彬.双连拱隧道两种减震措施研究[J].公路隧道,2008(4):15-18
[8]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):495-498(Gao Li,Chen Yanhua.Analysis of shock absorptionmeasures in tunnels based on ANSYS software[J].Journalof Shihezi University:Natural Science Edition,2008,26(4):495-498(in Chinese))
[9]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):412-415(Ling Yanting,Gao Bo.Study on shock absorption measures for double-lanehighway tunnels in high earthquake intensity regions[J].Tunnel Construction,2008,28(4):412-415(in Chinese))
[10]袁帅.浅埋隧道地震动力响应分析及减震措施研究[D].武汉:武汉理工大学,2008(Yuan Shuai.Seismicresponse analysis of shallow-depth tunnel and vibrationabsorption measure[D].Wuhan:Wuhan University ofTechnology,2008(in Chinese))
[11]王明年,关宝树.高烈度地震区地下结构减震原理研究[J].工程力学2,000(增):295-299王明年(1965-),男,博士,教授。主要从事隧道与地下工程方面的教学与研究。崔光耀(1983-),男,博士研究生。主要从事隧道与地下工程研究。
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