隧道纤维混凝土衬砌抗错断性能模型试验研究
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摘要
为研究隧道纤维混凝土衬砌的抗错断性能,以某地铁工程九家湾断裂F_(2-3)区间隧道段为研究背景,开展了高烈度活动断裂区隧道纤维混凝土衬砌抗错断性能模型试验研究。研究结果表明:隧道纤维混凝土衬砌主应力抗错断效果达30%～40%,纵向应变抗错断效果达80%～90%,结构安全系数最小值增加倍数达4倍～5倍;隧道混杂纤维混凝土衬砌抗错断效果优于钢纤维混凝土衬砌,钢-聚丙烯混杂纤维混凝土隧道衬砌抗错断安全性最高,结构安全系数最小值为1.62;在提高隧道抗错断性能方面,纤维混凝土的增韧作用强于增强作用。研究成果对高烈度活动断裂区隧道抗错断性能的提高具有重要的意义。
In order to study anti-breaking performance of fiber reinforced concrete tunnel lining, Jiujiawan fault F2-3 interval tunnel segment in a metro project was taken as the study background to conduct model tests for anti-breaking performance of a fiber reinforced concrete tunnel lining in a high-intensity seismically active fault zone. The study results showed that the anti-breaking effect of the principal stress of the fiber reinforced concrete tunnel lining reaches 30%-40%, the anti-breaking effect of its longitudinal strain reaches 80%-90%, the minimum value of the structural safety coefficient is increased by 4-5 times; compared to a steel fiber reinforced concrete lining, the anti-breaking effect of the fiber reinforced concrete one is better, the anti-breaking security of a steel-polypropylene hybrid fiber concrete lining is the highest, the minimum value of the structural safety coefficient is 1.62; toughening action of fiber reinforced concrete is stronger than its strengthening one in improving the anti-breaking performance of a tunnel; these results are significant to improve the anti-breaking performance of a tunnel in high-intensity seismically active fault zone.
In order to study anti-breaking performance of fiber reinforced concrete tunnel lining, Jiujiawan fault F2-3 interval tunnel segment in a metro project was taken as the study background to conduct model tests for anti-breaking performance of a fiber reinforced concrete tunnel lining in a high-intensity seismically active fault zone. The study results showed that the anti-breaking effect of the principal stress of the fiber reinforced concrete tunnel lining reaches 30%-40%, the anti-breaking effect of its longitudinal strain reaches 80%-90%, the minimum value of the structural safety coefficient is increased by 4-5 times; compared to a steel fiber reinforced concrete lining, the anti-breaking effect of the fiber reinforced concrete one is better, the anti-breaking security of a steel-polypropylene hybrid fiber concrete lining is the highest, the minimum value of the structural safety coefficient is 1.62; toughening action of fiber reinforced concrete is stronger than its strengthening one in improving the anti-breaking performance of a tunnel; these results are significant to improve the anti-breaking performance of a tunnel in high-intensity seismically active fault zone.
引文
[1] 四川省交通厅公路规划勘察设计研究院.5.1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.
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[14] 崔光耀,王道远,倪嵩陟,等.软弱围岩隧道钢纤维混凝土衬砌承载特性模型试验研究[J].岩土工程学报,2017,39(10):1807-1813.CUI Guangyao,WANG Daoyuan,NI Songzhi,et al.Model tests on bearing characteristics of steel fiber-reinforced concrete lining of weak surrounding rock tunnel[J].Chinese Journal of Geotechnical Engineering,2017,39(10):1807-1813.
[15] 崔光耀,王道远,倪嵩陟,等.玄武岩纤维混凝土隧道衬砌承载特性模型试验研究[J].岩土工程学报,2017,39(2):311-318.CUI Guangyao,WANG Daoyuan,NI Songzhi,et al.Model tests on bearing characteristics of basalt fiber-reinforced concrete tunnel linings[J].Chinese Journal of Geotechnical Engineering,2017,39(2):311-318.
[16] 中华人民共和国住房和城乡建设部,中华人民共和国国家质量监督检验检疫总局.地铁设计规范:GB 50157—2013[S].北京:中国建筑工业出版社,2013.
[17] 中华人民共和国交通部.公路隧道设计规范:JTGD 70—2004[S].北京:人民交通出版社,2004.
[2] WANG Z Z,ZHANG Z.Seismic damage classification and risk assessment of mountain tunnels with a validation for the 2008 Wenchuan earthquake[J].Soil Dynamics and Earthquake Engineering,2013,45:45-55.
[3] 日本土木学会.コンクリート標準示方書-耐震設計編[M].東京:鹿島出版会,1997.
[4] 熊炜,范文,彭建兵,等.正断层活动对公路山岭隧道工程影响的数值分析[J].岩石力学与工程学报,2010,29(增刊1):2845-2852.XIONG Wei,FAN Wen,PENG Jianbing,et al.Numerical analysis of effect of normal fault activity on road mountain tunnel project[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(Sup 1):2845-2852.
[5] 刘学增,王煦霖,林亮伦.60°倾角正断层黏滑错动对山岭隧道影响的试验研究[J].土木工程学报,2014,47(2):121-128.LIU Xuezeng,WANG Xulin,LIN Lianglun.Model experimental study on influence of normal fault with 60° dip angle stick-slip dislocation on mountain tunnel[J].China Civil Engineering Journal,2014,47(2):121-128.
[6] RUSSO M,GERMANI G,AMBERG W.Design and construction of large tunnel through active faults:a recent application[C]//International Conference of Tunneling and Underground Space Use.Istanbul,Turkey:[s.n.],2002:16-18.
[7] SHAHIDI A R,VAFAEIAN M.Analysis of longitudinal profile of the tunnels in the active faulted zone and designing the flexible lining(for Koohrang-III tunnel)[J].Tunneling and Underground Space Technology,2005,20:213-221.
[8] 刘学增,郭彪,李学锋,等.变形缝对跨断层隧道抗错断影响的模型试验研究[J].岩石力学与工程学报,2015,34(增刊2):3837-3843.LIU Xuezeng,GUO Biao,LI Xuefeng,et al.Model experiment study on effect of deformation joints on road tunnel resisting destruction by thrust fault stick-slip dislocation[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(Sup 2):3837-3843.
[9] 刘云,高峰.跨断层隧道动力特性大型振动台试验研究[J].振动与冲击,2016,35(12):160-165.LIU Yun,GAO Feng.Experimental study on the dynamic characteristics of a tunnel-crossing fault using a shake-table test[J].Journal of Vibration and Shock,2016,35(12):160-165.
[10] 王道远,崔光耀,袁金秀,等.断裂黏滑错动下隧道减错措施作用效果模型试验研究[J].岩土工程学报,2018(8):1515-1521.WANG Daoyuan,CUI Guangyao,YUAN Jinxiu,et al.Model experimental study on effect of reducing dislocation measures undering stick-slip fault dislocation of tunnel[J].Chinese Journal of Geotechnical Engineering,2018(8):1515-1521.
[11] 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.
[12] 王帅帅,高波,隋传义,等.减震层减震原理及跨断层隧道减震技术振动台试验研究[J].岩土工程学报,2015,37(6):1086-1092.WANG Shuaishuai,GAO Bo,SUI Chuanyi,et al.Mechanism of shock absorption layer and shaking table tests on shaking absorption technology of tunnel across fault[J].Chinese Journal of Geotechnical Engineering,2015,37(6):1086-1092.
[13] 刘礼标,王永甫,刘方,等.断层走向对隧道地震响应影响的振动台试验研究[J].振动与冲击,2017,36(21):196-202.LIU Libiao,WANG Yongfu,LIU Fang,et al.Shaking table model tests on the influence of fault strike on the seismic responses of tunnels[J].Journal of Vibration and Shock,2017,36(21):196-202.
[14] 崔光耀,王道远,倪嵩陟,等.软弱围岩隧道钢纤维混凝土衬砌承载特性模型试验研究[J].岩土工程学报,2017,39(10):1807-1813.CUI Guangyao,WANG Daoyuan,NI Songzhi,et al.Model tests on bearing characteristics of steel fiber-reinforced concrete lining of weak surrounding rock tunnel[J].Chinese Journal of Geotechnical Engineering,2017,39(10):1807-1813.
[15] 崔光耀,王道远,倪嵩陟,等.玄武岩纤维混凝土隧道衬砌承载特性模型试验研究[J].岩土工程学报,2017,39(2):311-318.CUI Guangyao,WANG Daoyuan,NI Songzhi,et al.Model tests on bearing characteristics of basalt fiber-reinforced concrete tunnel linings[J].Chinese Journal of Geotechnical Engineering,2017,39(2):311-318.
[16] 中华人民共和国住房和城乡建设部,中华人民共和国国家质量监督检验检疫总局.地铁设计规范:GB 50157—2013[S].北京:中国建筑工业出版社,2013.
[17] 中华人民共和国交通部.公路隧道设计规范:JTGD 70—2004[S].北京:人民交通出版社,2004.