强震区隧道施工塌方段震害机理及处治技术研究
|
摘要
汶川地震公路隧道普通段衬砌垮塌震害均发生在施工塌方段。依托汶川地震公路隧道普通段震害调查资料,对强震作用下隧道施工塌方段进行震害特征、震害机理及处治技术研究具有重要的意义。揭示了汶川地震区公路隧道施工塌方段震害特征:软弱围岩施工塌方段均出现了二衬垮塌震害,严重段落甚至出现衬砌整体垮塌震害。探明了强震区隧道施工塌方段震害机理:地震惯性力影响明显;强制位移影响较小。强震区隧道施工塌方段采取"回填注浆+交错设缝"的处治措施后,主应力和内力的减震率均在35%以上,这说明"回填注浆+交错设缝"处治措施对隧道施工塌方段抗减震具有明显效果,是一种行之有效的处治措施。研究结论对于高烈度艰险山区交通生命线的抗减震技术具有重要的意义。
In the general section of highway tunnels, the seismic damage, which makes lining collapse, universally occurs in the construction landslide section during Wenchuan Earthquake. Based on the seismic damage survey data of the general section of highway tunnels, it is meaningful to analyze the seismic damage characteristics, seismic damage mechanism and treatment technologies of the construction landslide section of highway tunnels suffering intense earthquake. The seismic damage characteristics of the construction landslide section of highway tunnels in Wenchuan Earthquake regions reveal that the secondary linings in the construction landslide section of weak wall rock suffer collapse or even overall collapse in serious section. The seismic damage mechanism of the construction landslide section of highway tunnels is that the earthquake inertia force is significant and the forced displacement has small influence. After the measure of backfilled grouting and staggered construction joint in the landslide section of highway tunnels in the highly seismic region, the damping rates of the principal stresses and internal forces are all above 35%. It is shown that the processing is effective to the construction landslide section of highway tunnels to improve the anti-seismic capacity. The research results are of important singnificance to the anti-seismic technology in the communication of lifeline engineering in high-intensity earthquake moutainous areas.
In the general section of highway tunnels, the seismic damage, which makes lining collapse, universally occurs in the construction landslide section during Wenchuan Earthquake. Based on the seismic damage survey data of the general section of highway tunnels, it is meaningful to analyze the seismic damage characteristics, seismic damage mechanism and treatment technologies of the construction landslide section of highway tunnels suffering intense earthquake. The seismic damage characteristics of the construction landslide section of highway tunnels in Wenchuan Earthquake regions reveal that the secondary linings in the construction landslide section of weak wall rock suffer collapse or even overall collapse in serious section. The seismic damage mechanism of the construction landslide section of highway tunnels is that the earthquake inertia force is significant and the forced displacement has small influence. After the measure of backfilled grouting and staggered construction joint in the landslide section of highway tunnels in the highly seismic region, the damping rates of the principal stresses and internal forces are all above 35%. It is shown that the processing is effective to the construction landslide section of highway tunnels to improve the anti-seismic capacity. The research results are of important singnificance to the anti-seismic technology in the communication of lifeline engineering in high-intensity earthquake moutainous areas.
引文
[1]四川省交通厅公路规划勘察设计研究院.“5.12”汶川特大地震四川灾区国省干线公路检测评估技术总结[R].成都:四川省交通厅,2008.Highway Planning,Survey,Design and Research Institute,Sichuan Provincial Communications Department.Conclusion of detecting and evaluating of national and provincial highways in Sichuan Province after“5.12”Wenchuan earthquake[R].Chengdu:Sichuan Provincial Communications Department,2008.
[2]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:四川省交通厅公路规划勘察设计研究院,2008.(Highway Planning,Survey,Design and Research Institute,Sichuan Provincial Communications Department.Investigation,detection and evaluation of the restoration and reconstruction project of highways,national and provincial trunk roads in disaster areas induced by Wenchuan earthquake on May 12,2008[R].Chengdu:Highway Planning,Survey,Design and Research Institute,Sichuan Provincial Communications Department,2008.(in Chinese))
[3]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 Guang-yao,WANG Ming-nian,LIN Guo-jin,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.(in Chinese))
[4]崔光耀,刘维东,倪嵩陟,等.汶川地震各地震烈度区公路隧道震害特征研究[J].现代隧道技术,2014,51(6):1–6.(CUI Guang-yao,LIU Wei-dong,NI Song-Zhi,et al.Study on different seismic intensities and earthquake damage to highway tunnels in wenchuan area affected by earthquakes[J].Modern Tunnelling Technology,2014,51(6):1–6.(in Chinese))
[5]臧万军,王峥.山岭隧道洞身段震害规律与地震风险模糊综合评价分析[J].现代隧道技术,2014,51(1):45–53.(ZANG Wan-jun,WANG Zheng.A fuzzy comprehensive evaluation of the seismic hazard rule and relevant risks for mountain tunnel bodies[J].Modern Tunnelling Technology,2014,51(1):45–53.(in Chinese))
[6]崔光耀,王明年,于丽,等.汶川地震公路隧道洞口结构震害分析及震害机理研究[J].岩土工程学报,2013,35(6):1084–1091.(CUI Guang-yao,WANG Ming-nian,YU Li,et al.Analysis of seismic damage and mechanism of portal structure of highway tunnel in Wenchuan earthquake[J].Chinese Journal of Geotechnical Engineering,2013,35(6):1084–1091.(in Chinese))
[7]崔光耀,王明年,林国进,等.汶川地震公路隧道洞口段震害机理及抗震对策研究[J].现代隧道技术,2011,48(6):6–10,22.(CUI Guang-yao,WANG Ming-nian,LIN Guo-jin,et al.Study on earthquake damage mechanism and aseismatic countermeasure of highway tunnel portal section in Wenchuan seismic disastrous area[J].Modern Tunneling Technology,2011,48(6):6–10,22.(in Chinese))
[8]何川,李林,张景,等.隧道穿越断层破碎带震害机理研究[J].岩土工程学报,2014,36(3):427–434.(HE Chuan,LI Lin,ZAHNG Jing,et al.Seismic damage mechanism of tunnels through fault zones[J].Chinese Journal of Geotechnical Engineering,2014,36(3):427–434.(in Chinese))
[9]方林.穿越断层隧道震害及减震措施研究[D].成都:西南变通大学,2009.(FANG Lin.The research on seismic damage and shock absorbtion measures of the tunnels through fault[D].Chengdu:Southwest Jiaotong University,2009.(in Chinese))
[10]朱长安.断层破碎带隧道地震动力响应分析[D].成都:西南变通大学,2009.(ZHU Chang-an.Study on seismic dynamic response of tunnel in the fault-rupture zone[D].Chengdu:Southwest Jiaotong University,2009.(in Chinese))
[11]崔光耀,王明年,于丽,等.汶川地震断层破碎带段隧道结构震害分析及震害机理研究[J].土木工程学报,2013,46(11):122–127.(CUI Guang-yao,WANG Ming-nian,YU Li,et al.Study on the characteristics and mechanism of seismic damage for tunnel structures on fault rupture zone in Wenchuan seismic disastrous area[J].China Civil Engineering Journal,2013,46(11):122–127.(in Chinese))
[12]王明年,于丽,林国进,等.隧道抗震与减震[M].北京:科学出版社,2012.(WANG Ming-nian,YU Li,LIN Guo-jin,et al.Tunnel seismic and shock absorption[M].Beijing:Science Press,2012.(in Chinese))
[13]王道远,袁金秀,朱永全,等.高烈度区软硬岩交界段隧道震害机制及减震缝减震技术模型试验研究[J].岩石力学与工程学报,2017,36(增刊2):4113–4121.(WANG Dao-yuan,YUAN Jin-xiu,ZHU Yong-quan,et al.Mechanism of seismic damage and mode test on absorption joint damping technology of tunnel across junction of soft and hard rock in highly seismic area[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(S2):4113–4121.(in Chinese))
[2]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:四川省交通厅公路规划勘察设计研究院,2008.(Highway Planning,Survey,Design and Research Institute,Sichuan Provincial Communications Department.Investigation,detection and evaluation of the restoration and reconstruction project of highways,national and provincial trunk roads in disaster areas induced by Wenchuan earthquake on May 12,2008[R].Chengdu:Highway Planning,Survey,Design and Research Institute,Sichuan Provincial Communications Department,2008.(in Chinese))
[3]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 Guang-yao,WANG Ming-nian,LIN Guo-jin,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.(in Chinese))
[4]崔光耀,刘维东,倪嵩陟,等.汶川地震各地震烈度区公路隧道震害特征研究[J].现代隧道技术,2014,51(6):1–6.(CUI Guang-yao,LIU Wei-dong,NI Song-Zhi,et al.Study on different seismic intensities and earthquake damage to highway tunnels in wenchuan area affected by earthquakes[J].Modern Tunnelling Technology,2014,51(6):1–6.(in Chinese))
[5]臧万军,王峥.山岭隧道洞身段震害规律与地震风险模糊综合评价分析[J].现代隧道技术,2014,51(1):45–53.(ZANG Wan-jun,WANG Zheng.A fuzzy comprehensive evaluation of the seismic hazard rule and relevant risks for mountain tunnel bodies[J].Modern Tunnelling Technology,2014,51(1):45–53.(in Chinese))
[6]崔光耀,王明年,于丽,等.汶川地震公路隧道洞口结构震害分析及震害机理研究[J].岩土工程学报,2013,35(6):1084–1091.(CUI Guang-yao,WANG Ming-nian,YU Li,et al.Analysis of seismic damage and mechanism of portal structure of highway tunnel in Wenchuan earthquake[J].Chinese Journal of Geotechnical Engineering,2013,35(6):1084–1091.(in Chinese))
[7]崔光耀,王明年,林国进,等.汶川地震公路隧道洞口段震害机理及抗震对策研究[J].现代隧道技术,2011,48(6):6–10,22.(CUI Guang-yao,WANG Ming-nian,LIN Guo-jin,et al.Study on earthquake damage mechanism and aseismatic countermeasure of highway tunnel portal section in Wenchuan seismic disastrous area[J].Modern Tunneling Technology,2011,48(6):6–10,22.(in Chinese))
[8]何川,李林,张景,等.隧道穿越断层破碎带震害机理研究[J].岩土工程学报,2014,36(3):427–434.(HE Chuan,LI Lin,ZAHNG Jing,et al.Seismic damage mechanism of tunnels through fault zones[J].Chinese Journal of Geotechnical Engineering,2014,36(3):427–434.(in Chinese))
[9]方林.穿越断层隧道震害及减震措施研究[D].成都:西南变通大学,2009.(FANG Lin.The research on seismic damage and shock absorbtion measures of the tunnels through fault[D].Chengdu:Southwest Jiaotong University,2009.(in Chinese))
[10]朱长安.断层破碎带隧道地震动力响应分析[D].成都:西南变通大学,2009.(ZHU Chang-an.Study on seismic dynamic response of tunnel in the fault-rupture zone[D].Chengdu:Southwest Jiaotong University,2009.(in Chinese))
[11]崔光耀,王明年,于丽,等.汶川地震断层破碎带段隧道结构震害分析及震害机理研究[J].土木工程学报,2013,46(11):122–127.(CUI Guang-yao,WANG Ming-nian,YU Li,et al.Study on the characteristics and mechanism of seismic damage for tunnel structures on fault rupture zone in Wenchuan seismic disastrous area[J].China Civil Engineering Journal,2013,46(11):122–127.(in Chinese))
[12]王明年,于丽,林国进,等.隧道抗震与减震[M].北京:科学出版社,2012.(WANG Ming-nian,YU Li,LIN Guo-jin,et al.Tunnel seismic and shock absorption[M].Beijing:Science Press,2012.(in Chinese))
[13]王道远,袁金秀,朱永全,等.高烈度区软硬岩交界段隧道震害机制及减震缝减震技术模型试验研究[J].岩石力学与工程学报,2017,36(增刊2):4113–4121.(WANG Dao-yuan,YUAN Jin-xiu,ZHU Yong-quan,et al.Mechanism of seismic damage and mode test on absorption joint damping technology of tunnel across junction of soft and hard rock in highly seismic area[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(S2):4113–4121.(in Chinese))