强震区跨断层隧道减震缝减震技术研究

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英文篇名：Study on Shock Absorption Technology of Shock Absorption Joint of Fault-crossing Tunnels in Meizoseismal Area 作者：涂瀚 ; 倪嵩陟 ; 左奎现 英文作者：TU Han;NI Songzhi;ZUO Kuixian;The 4th Engineering Co.,Ltd.of China Railway Tunnel Group;North China University of Technology; 关键词：强震区 ; 跨断层隧道 ; 减震缝 ; 减震性能 英文关键词：meizoseismal area;;fault-crossing tunnel;;shock absorption joint;;seismic performance 中文刊名：GSTL 英文刊名：High Speed Railway Technology 机构：中铁隧道集团四处有限公司;北方工业大学; 出版日期：2019-02-28 出版单位：高速铁路技术 年：2019 期：v.10;No.54 基金：国家自然科学基金(51408008);; 国家十二五科技支撑项目(2012BAK09B06) 语种：中文; 页：GSTL201901012 页数：5 CN：01 ISSN：51-1730/U 分类号：63-67

摘要

为进一步提高强震区跨断层隧道的震时安全稳定性,文章依托某铁路隧道断层段,利用有限差分数值计算软件对减震缝的减震性能进行研究,对比分析了无减震缝、常规减震缝和交错设缝二衬结构的主应力及内力。研究结果表明:(1)跨断层隧道上盘结构受地震作用的影响大于下盘;(2)施设减震缝后,隧道衬砌结构轴力值、弯矩值明显降低,常规设缝和交错设缝的轴力最大降幅分别为54. 4%、47. 6%,弯矩最大降幅分别为41. 9%、43. 1%;(3)施设减震缝后,隧道衬砌结构的安全系数明显增大,常规设缝和交错设缝的最大增幅分别为54. 3%、55. 6%;(4)综上可知,施设减震缝可提高跨断层隧道结构的安全性及稳定性。
        In order to further improve the seismic safety and stability of fault-crossing tunnel in meizoseismal area,based on the fault section of railway tunnel,the vibration reducing performance of the shock absorption joint is studied by using finite difference numerical calculation software,and the main stress and internal force of the second lining structure of the conventional damping joints and staggered joints and without shock absorbing joints are compared and analyzed. The results show that the influence of seismic action on the hanging wall structure of the fault-crossing tunnel is greater than that of the footwall. The axial force value and bending moment value of the tunnel lining structure are obviously reduced after the shock absorption joints are installed. The maximum decreasing amplitude of axial force for conventional joints and interlacing joints is 54. 4% and 47. 6% respectively,and the maximum decreasing amplitude of bending moment for conventional joints and interlacing joints is 41. 9% and 43. 1% respectively. The safety factor of tunnel lining structure increases obviously after the joints are installed,and the maximum amplification of conventional joints and staggered joints is 54. 3% and 55. 6% respectively. In conclusion,the application of the shock absorption joint can improve the safety and stability of the fault-crossing tunnel structure.

引文

[1]信春雷,高波,周佳媚,等.跨断层隧道抗减震措施性能振动台试验研究[J].岩土工程学报,2014,36(8):1414-1422.XIN Chunlei,GAO Bo,ZHOU Jiamei,et al. Shaking Table Tests onPerformances of Anti-seismic and Damping Measures for Fault-crossingTunnel Structures[J]. Chinese Journal of Geotechnical Engineering,2014,36(8):1414-1422.
    [2]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,2009,56(3):336-341.GAO Bo,WANG Zhengzheng,YUAN Song,et al. Lessons Learntfrom Damage of Highway Tunnels in Wenchuan Earthquake[J].Journal of Southwest Jiaotong University,2009,56(3):336-341.
    [3]耿萍,吴川,唐金良,等.穿越断层破碎带隧道动力响应特性分析[J].岩石力学与工程学报,2012,31(7):1406-1413.GENG Ping,WU Chuan,TANG Jinliang,et al. Analysis of DynamicResponse Properties for Tunnel Through Fault Fracture Zone[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(7):1406-1413.
    [4]倪嵩陟.钢-玄武岩混杂纤维混凝土衬砌承载特性及抗震性能研究[D].北京:北方工业大学,2017.NI Songzhi. Study on Bearing Capacity and Seismic Performance ofSteel-basalt Hybrid Fibers Reinforced Concrete Lining[D]. Beijing:North China University of Technology,2017.
    [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.GAO Feng,SHI Yucheng,YAN Songhong,et al. Study of Two ShockAbsorption Measures in Tunnel[J]. Chinese Journal of RockMechanics and Engineering,2005,24(2):222-229.
    [6]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(S2):4113-4121.WANG Daoyuan,YUAN Jinxiu,ZHU Yongquan,et al. Mechanism ofSeismic Damage and Mode Test on Absorption Joint DampingTechnology of Tunnel Across Junction of Soft and Hard Rock in HighSeismic Area[J]. Chinese Journal of Rock Mechanics andEngineering,2017,36(S2):4113-4121.
    [7]崔光耀,王明年,于丽,等.断裂黏滑隧道减震缝减震技术模型试验研究[J].岩石力学与工程学报,2013,32(8):1603-1609.CUI Guangyao,WANG Mingnian,YU Li,et al. Model Test Study ofShock Absorption Joint Damping Technology of Stick-slip FractureTunnel[J]. Chinese Journal of Rock Mechanics and Engineering,2013,32(8):1603-1609.
    [8]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,2007,51(4):36-40.XIONG Liangxiao,LI Tianbin,YANG Linde. Study on NumericalSimulation of Two Shock Absorption Measures in Tunnel[J]. HydroGeology and Engineering Geology,2007,51(4):36-40.
    [9]崔光耀,王明年,于丽,等.穿越黏滑错动断层隧道减震层减震技术模型试验研究[J].岩土工程学报,2013,35(9):1753-1758.CUI Guangyao,WANG Mingnian,YU Li,et al. Model Tests Studyon Damping Shake Technology of Shock Absorption Layer of TunnelsCrossing Stick-slip Faults[J]. Chinese Journal of GeotechnicalEngineering,2013,35(9):1753-1758.
    [10]崔光耀,伍修刚,王明年,等.高烈度地震区黏滑断层隧道减震层减震模型试验研究[J].岩土工程学报,2017,39(11):2125-2131.CUI Guangyao,WU Xiugang,WANG Mingnian,et al. Model TestsStudy on Damping of Shock Absorption Layer of Stick-slip FractureTunnel in High Seismic Areas[J]. Chinese Journal of GeotechnicalEngineering,2017,39(11):2125-2131.
    [11]信春雷,高波,周佳媚,等.跨断层隧道设置常规抗减震措施振动台试验研究[J].岩石力学与工程学报,2014,33(10):2047-2055.XIN Chunlei,GAO Bo,ZHOU Jiamei,et al. Shaking Table Tests ofConventional Anti-seismic and Damping Measures on Fault-crossingTunnels[J]. Chinese Journal of Rock Mechanics and Engineering,2014,33(10):2047-2055.