考虑地震作用的山岭隧道空洞加固方案优化研究
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摘要
以福建省道206线龙门隧道病害治理工程为托依,运用FIAC3D软件对不同加固方法处理龙门隧道衬砌背后空洞进行了抗震稳定性计算,并对各种方法的抗震加固效果定量的进行了对比分析。计算结果表明:回填注浆加固可降低隧道衬砌的加速度和主拉应力响应,改善衬砌内部的应力和弯矩分布;锚杆和套拱的施加可改变隧道围岩的最大主应力频谱特性;采用回填注浆+砂浆锚杆+套拱组合加固方法治理龙门隧道,其抗震加固效果最为理想。研究成果对高烈度地震区地下工程抗震加固具有一定的借鉴意义。
Based on the damage treatment project of Longmen Tunnel at the Fujian provincial highway 206,the anti-seismic stability of Longmen tunnel with different reinforcement methods to deal with the cavity behind the lining was analyzed by FLAC3Dsoftware,and the effect of all kinds of anti-seismic hardening methods was studied quantitatively.The results show that,the backfill grouting consolidation can reduce the acceleration response of tunnel lining and principal tensile stress,improve the distribution of stress and bending moment of internal lining,the maximum principal stress spectrum characteristics of surrounding rock can be changed with adding anchor and cover arch.The effect of earthquake resistance using the combined reinforcement method of backfill grouting,rock bolt and reinforced concrete arch is optimal in this project.The results are useful for the anti-seismic strengthening of underground projects in high-intensity earthquake areas.
Based on the damage treatment project of Longmen Tunnel at the Fujian provincial highway 206,the anti-seismic stability of Longmen tunnel with different reinforcement methods to deal with the cavity behind the lining was analyzed by FLAC3Dsoftware,and the effect of all kinds of anti-seismic hardening methods was studied quantitatively.The results show that,the backfill grouting consolidation can reduce the acceleration response of tunnel lining and principal tensile stress,improve the distribution of stress and bending moment of internal lining,the maximum principal stress spectrum characteristics of surrounding rock can be changed with adding anchor and cover arch.The effect of earthquake resistance using the combined reinforcement method of backfill grouting,rock bolt and reinforced concrete arch is optimal in this project.The results are useful for the anti-seismic strengthening of underground projects in high-intensity earthquake areas.
引文
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[14]Youssef M.A.Hashash,Jeffrey J.Hook,BirgerSchmidt,et al.Seismic design and analysis of under-ground structures[J].Tunnelling and UndergroundSpace Technology,2001,(16):247-293.
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[16]中华人民共和国住房与城乡建设部.建筑抗震设计规范(GB50011-2010)[S].北京:中国建筑工业出版社,2010.(Ministry of Housing and Urban-RuralConstruction of the People’s Republic of China.Build-ing Code of Aseismic Designing(GB50011—2010)[S].Beijing:China Architecture and Building Press,2010.(in Chinese))
[2]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 Tianbin.Failure characteristic and influ-ence factor analysis of mountain tunnels at epicenterzones of great Wenchun earthquake[J].Journal of En-gineering Geology,2008,16(6):742-750.(in Chi-nese))
[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):336-341.(Gao Bo,Wang Zhengzheng,Yuan Song,et al.Les-sons learnt from damage of highway tunnel in Wenchuanearthquake[J].Journal of Southwest Jiaotong Universi-ty,2009,44(3):336-341.(in Chinese))
[4]佘健,何川.隧道二次衬砌病害通用处治方法研究[J].中国铁道科学,2005,26(1):25-30.(SheJian,He Chuan.Study on general treatment methods forsecondary lining defect of tunnel[J].China RailwayScience,2005,26(1):25-30.(in Chinese))
[5]何川,吴德兴,汪波,等.回填压注对缺陷病害隧道结构承载力影响的模型试验研究[J].水文地质工程地质,2008,(2):114-119.(He Chuan,Wu Dex-ing,Wang Bo,et al.Research on effect of backfillingpressure casting for structure bearing capacity by modeltest in defect and disease tunnel[J].Hydrogeology&Engineering Geology,2008,(2):114-119.(in Chi-nese))
[6]佘健,何川,汪波,等.衬砌背后空洞对隧道结构承载力影响的模型试验研[J].公路交通科技,2008,25(1):104-110.(She Jian,He Chuan,Wang Bo,etal.Study on effect of cavities behind linings on bearingcapacity of tunnel structure by model test[J].Journal ofHighway and Transportation Research and Development,2008,25(1):104-110.(in Chinese))
[7]高峰,石玉成,严松宏,等.隧道的两减震措施研究[J].岩石力学与工程学报,2005,24(2):222-229.(Gao Feng,Shi Yucheng,Yan Songhong,et al.Studyof two shock absorption measures in tunnel[J].ChineseJournal of Geotechnical Engineering,2005,24(2):222-229.(in Chinese))
[8]郭军,王明年,田尚志.高烈度地震区公路隧道明洞抗震计算分析[J].岩土工程学报,2007,29(11):1 733-1 736.(Guo Jun,Wang Mingnian,TianShangzhi.Aseismatic analysis on open tunnels in seis-mic region with strong motion[J].Chinese Journal ofGeotechnical Engineering,2007,29(11):1 733-1 736.(in Chinese))
[9]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].岩土工程学报,2007,26(8):1 538-1 545.(Yang Linde,WangGuobo,Zheng Yonglai,et al.Shaking table test onmetro station structure and 3D numerical simulation ofseismic response[J].Chinese Journal of Rock Mechan-ics and Engineering,2007,26(8):1 538-1 545.(inChinese))
[10]王国波,马险峰,杨林德.软土地铁车站结构及隧道的三维地震响应分析[J].岩土力学,2009,30(8):2 523-2 528.(Wang Guobo,Ma Xianfeng,Yang Linde.Three-dimensional seismic response anal-ysis of metro station structures and tunnels in soft soil[J].Rock and Soil Mechanics,2009,30(8):2 523-2 528.(in Chinese))
[11]刘立宇,陈之毅,袁勇.围岩级别对强震作用下隧道地震响应的影响[J].地下空间与工程学报,2011,7(增1):1 314-1 318.(Liu Liyu,ChenZhiyi,Yuan Yong.Impact of rock class on seismic re-sponses of mountain tunnels under severe earthquake,2011,7(Supp.1):1 314-1 318.(in Chinese))
[12]李育枢.山岭隧道地震动力响应及减震措施研究[D].上海:同济大学,2006.(Li Yushu.Study onearthquake responses and vibration-absorption meas-ures for mountain tunnel[D].Shanghai:Tongji Uni-versity,2006.(in Chinese))
[13]Jin-Hung Hwang,Chih-Chieh Lu.Seismic capacity as-sessment of old Sanyi railway tunnels[J].Tunnellingand Underground Space Technology,2007,(22):433-449.
[14]Youssef M.A.Hashash,Jeffrey J.Hook,BirgerSchmidt,et al.Seismic design and analysis of under-ground structures[J].Tunnelling and UndergroundSpace Technology,2001,(16):247-293.
[15]A.A.Stamos,D.E.Beskos.3D seismic response anal-ysis of long lined tunnels in half-space[J].Soil Dy-namics and Earthquake Engineering,1996,(15):111-118.
[16]中华人民共和国住房与城乡建设部.建筑抗震设计规范(GB50011-2010)[S].北京:中国建筑工业出版社,2010.(Ministry of Housing and Urban-RuralConstruction of the People’s Republic of China.Build-ing Code of Aseismic Designing(GB50011—2010)[S].Beijing:China Architecture and Building Press,2010.(in Chinese))
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