汶川地震公路隧道洞口段震害机理及抗震对策研究
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摘要
汶川地震中震区公路隧道洞口段破坏严重,严重影响了震区生命线工程的畅通。为提高震区公路隧道洞口段的抗震能力,结合公路隧道洞口段震害情况对其震害机理进行了研究。研究结果表明,洞门、边仰坡及明洞震害主要是地震惯性力作用造成的;软岩隧道洞口段衬砌震害主要是地震惯性力和强制位移造成的。文章根据隧道洞口段的震害机理,提出了相应的抗震对策。研究结果对于进一步研究高烈度地震区公路隧道震害机理及抗震对策都有着重要的意义。
Earthquakes destroyed a tunnel portal section in the earthquake region of Wenchuan,and this seriously affected the lifeline engineering of this seismic area.This study focuses on the mechanism of earthquake damage in order to improve the seismic capacity of highway tunnel portal sections and summarizes earthquake damage information regarding highway tunnel portal sections.Results show that earthquake damage to tunnel portal structures,slopes around the tunnel entrance and opencut tunnels are mainly attributable to seismic inertial force,and the damage of the soft rock tunnel lining structure was caused by seismic inertial force and forced displacement.According to the mechanism of earthquake damage to highway tunnel portal sections,corresponding countermeasures are presented.These results are important to the further study of earthquake damage mechanisms and earthquake countermeasures for highway tunnels in highly seismic areas.
Earthquakes destroyed a tunnel portal section in the earthquake region of Wenchuan,and this seriously affected the lifeline engineering of this seismic area.This study focuses on the mechanism of earthquake damage in order to improve the seismic capacity of highway tunnel portal sections and summarizes earthquake damage information regarding highway tunnel portal sections.Results show that earthquake damage to tunnel portal structures,slopes around the tunnel entrance and opencut tunnels are mainly attributable to seismic inertial force,and the damage of the soft rock tunnel lining structure was caused by seismic inertial force and forced displacement.According to the mechanism of earthquake damage to highway tunnel portal sections,corresponding countermeasures are presented.These results are important to the further study of earthquake damage mechanisms and earthquake countermeasures for highway tunnels in highly seismic areas.
引文
[1]崔光耀,王明年,林国进,等.汶川地震区典型公路隧道衬砌震害类型统计分析[J].中国地质灾害与防治学报)2011,22(1):122-127 Cui Guangyao,Wang Mingnian,Lin Guojin,et al.Statistical Analysis of Earthquake Damage Types of Typical Highway Tunnel Lining Structure in Wenchuan Seismic Disastrous Area[J].The Chinese Journal of Geological Hazard and Control,2011,22(1):122-127
[2]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.Establishment of Tunnel Damping Model and Research on Damping Effect with Model Test in Highly Seismic Area[J].Rock and Soil Mechanics,2010,31(6):1884-1890
[3]高波,王峥峥,袁松,等.汶川地震公路隧道震害启示[J].西南交通大学学报,2009,44(3):336-374 Gao Bo,Wang Zhengzheng,Yuan Song,et al.Lessons learnt from Damage of Highway Tunnels in Wenchuan Earthquake[J].Jour-nal of Southwest Jiaotong University,2009,44(3):336-374
[4]李天斌.汶川特大地震中山岭隧道变形破坏特征及影响因素分析[J].工程地质学报,2008,16(6):742-750 Li Tianbing.Failure Characteristics and Influence Factor Analysis of Mountain Tunnels at Epicenter Zones of Great Wenchuan Earthquake[J].Journal of Engineering Geology,2008,16(6):742-750
[5]王照华,唐建华,宋宏伟.隧道震害特征及其影响因素[J].山西建筑,2007,33(11):263-264 Wang Zhaohua,Tang Jianhua,Song Hongwei.Study on Tunnel Performances Due to Seismic Damage and Influencing Factors[J].Shanxi Architecture,2007,33(11):263-264
[6]王秀英,刘维宁,张弥.地下结构灾害类型及机理研究[J].中国安全科学学报,2003,13(11):55-58 Wang Xiuying,Liu Weining,Zhang Mi.Study on the Categorization and Mechanism of Seismic Damage of Underground Structures[J].Chinese Safety Science Journal,2003,1(11):55-58
[7]张林.山岭隧道洞口段地震动力响应及抗减震措施研究[D].重庆:重庆交通大学,2010 Zhang Lin.Study on Earthquake Responses and Vibration-absorption Measures for Mountain Tunnel[D].Chongqing:Chongqing Jiaotong University,2010
[8]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.Seismic Response Analysis of Shallow-depth Tunnel and Vibration Absorption Measure.(M.S.Thesis)[D].Wuhan:Wuhan University of Technology,2008
[9]四川省交通厅公路规划勘察设计研究院.5.12汶川地震灾区高速公路和国省干线公路恢复重建工程调查、检测、评估[R].成都:2008 Highway Planning,Survey,Design and Research Institute,Sichuan Provincial Communications Department.Investigation,Detec-tion and Evaluation of the Restoration and Reconstruction Project of Highways,National and Provincial Trunk Roads in Disaster Areas Induced by Wenchuan Earthquake on May12,2008[R].Chengdu:2008
[2]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.Establishment of Tunnel Damping Model and Research on Damping Effect with Model Test in Highly Seismic Area[J].Rock and Soil Mechanics,2010,31(6):1884-1890
[3]高波,王峥峥,袁松,等.汶川地震公路隧道震害启示[J].西南交通大学学报,2009,44(3):336-374 Gao Bo,Wang Zhengzheng,Yuan Song,et al.Lessons learnt from Damage of Highway Tunnels in Wenchuan Earthquake[J].Jour-nal of Southwest Jiaotong University,2009,44(3):336-374
[4]李天斌.汶川特大地震中山岭隧道变形破坏特征及影响因素分析[J].工程地质学报,2008,16(6):742-750 Li Tianbing.Failure Characteristics and Influence Factor Analysis of Mountain Tunnels at Epicenter Zones of Great Wenchuan Earthquake[J].Journal of Engineering Geology,2008,16(6):742-750
[5]王照华,唐建华,宋宏伟.隧道震害特征及其影响因素[J].山西建筑,2007,33(11):263-264 Wang Zhaohua,Tang Jianhua,Song Hongwei.Study on Tunnel Performances Due to Seismic Damage and Influencing Factors[J].Shanxi Architecture,2007,33(11):263-264
[6]王秀英,刘维宁,张弥.地下结构灾害类型及机理研究[J].中国安全科学学报,2003,13(11):55-58 Wang Xiuying,Liu Weining,Zhang Mi.Study on the Categorization and Mechanism of Seismic Damage of Underground Structures[J].Chinese Safety Science Journal,2003,1(11):55-58
[7]张林.山岭隧道洞口段地震动力响应及抗减震措施研究[D].重庆:重庆交通大学,2010 Zhang Lin.Study on Earthquake Responses and Vibration-absorption Measures for Mountain Tunnel[D].Chongqing:Chongqing Jiaotong University,2010
[8]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.Seismic Response Analysis of Shallow-depth Tunnel and Vibration Absorption Measure.(M.S.Thesis)[D].Wuhan:Wuhan University of Technology,2008
[9]四川省交通厅公路规划勘察设计研究院.5.12汶川地震灾区高速公路和国省干线公路恢复重建工程调查、检测、评估[R].成都:2008 Highway Planning,Survey,Design and Research Institute,Sichuan Provincial Communications Department.Investigation,Detec-tion and Evaluation of the Restoration and Reconstruction Project of Highways,National and Provincial Trunk Roads in Disaster Areas Induced by Wenchuan Earthquake on May12,2008[R].Chengdu:2008
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