重载铁路隧道底部围岩损伤机理研究
|
摘要
以我国第一条按照30 t重载铁路标准建设的瓦日铁路太行山隧道为工程依托,采用现场长期监测结合数值模拟的方式,将重载铁路隧道底部围岩的损伤过程主要分为3个阶段。研究表明:随着时间的增长和重载列车的作用,底部围岩损伤位置的接触压力和水压力不断增加,这种现象在轨道下方尤为明显;地下水长期冲刷作用下,围岩颗粒逐渐流失,造成脱空范围变大出现贯通,引起相邻位置接触压力集中易造成基底结构失稳;故重载列车大轴重的长期碾压是底部围岩损伤激增的主要原因、且底部围岩在地下水冲刷作用和自身缺陷的相互影响下逐渐劣化,为基底结构病害的产生提供了条件。研究成果可为重载铁路隧道底部围岩损伤的预测和病害处治方法提供思路和借鉴。
Based on the Taihangshan Mountain tunnel of the Wari Railway, the first railway in China built under the standard of 30 t heavy haul railway, the damage process of the bottom surrounding rock of the heavy haul railway tunnel was divided into 3 stages based on the combination of long-term monitoring and numerical simulation. The results show that with the increase of time and the effect of heavy haul train, the contact pressure and water pressure of the surrounding rock damage position increase, which are especially obvious under the track. Rock particles gradually drain away under the long term erosion effect of groundwater, resulting in wider void range and the concentration of contact pressure at adjacent locations, which may cause the basement structural instability. Therefore, the long-term rolling of heavy haul train axle load is the main reason for the damage of the bottom surrounding rock. The surrounding rock is gradually deteriorated under the mutual influence of the groundwater erosion and the surrounding rock's own defects, which provides the conditions for the occurrence of basement structure diseases. The research results can provide ideas and reference for forecasting and disaster treatment of bottom rock damage of heavy haul railway tunnel.
Based on the Taihangshan Mountain tunnel of the Wari Railway, the first railway in China built under the standard of 30 t heavy haul railway, the damage process of the bottom surrounding rock of the heavy haul railway tunnel was divided into 3 stages based on the combination of long-term monitoring and numerical simulation. The results show that with the increase of time and the effect of heavy haul train, the contact pressure and water pressure of the surrounding rock damage position increase, which are especially obvious under the track. Rock particles gradually drain away under the long term erosion effect of groundwater, resulting in wider void range and the concentration of contact pressure at adjacent locations, which may cause the basement structural instability. Therefore, the long-term rolling of heavy haul train axle load is the main reason for the damage of the bottom surrounding rock. The surrounding rock is gradually deteriorated under the mutual influence of the groundwater erosion and the surrounding rock's own defects, which provides the conditions for the occurrence of basement structure diseases. The research results can provide ideas and reference for forecasting and disaster treatment of bottom rock damage of heavy haul railway tunnel.
引文
[1] 狄宏规,冷伍明,薛继连,等.朔黄铁路重载扩能的路基强度评估[J].铁道学报,2014,36(8):84-91.DI Honggui,LENG Wuming,XUE Jilian,et al.Assessment of Subgrade Strength for Transport Capacity Enlargement of Shuo-huang Heavy-haul Railway[J].Journal of the China Railway Society,2014,36(8):84-91.
[2] 聂志红,李亮,刘宝琛,等.秦沈客运专线路基振动测试分析[J].岩石力学与工程学报,2005,24(6):1067-1071.NIE Zhihong,LI Liang,LIU Baochen,et al.Testing and Analysis on Vibration of Subgrade for Qinhuangdao-Shenyang Railway[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(6):1067-1071.
[3] 冯怀平,王志鹏,常建梅,等.重载铁路基床动力湿化特性试验研究[J].土木工程学报,2015,48(S2):236-241.FENG Huaiping,WANG Zhipeng,CHANG Jianmei,et al.Experimental Study on Dynamic Slaking Deformation Characteristics of Heavy Haul Railway Subgrade Soil[J].China Civil Engineering Journal,2015,48(S2):236-241.
[4] 杨静静,张楠,战家旺,等.重载铁路线路加固体系车线动力分析[J].振动与冲击,2015,34(10):147-153.YANG Jingjing,ZHANG Nan,ZHAN Jiawang,et al.Vehicle-line Dynamic Analysis for a Heavy Rail Reinforcement System[J].Journal of Vibration and Shock,2015,34(10):147-153.
[5] 魏伟,王厂,张渊,等.重载铁路线路加固体系车线动力分析[J].振动与冲击,2016,35(6):156-161.WEI Wei,WANG Chang,ZHANG Yuan,et al.Simulation of Indexer Dynamic Load of Heavy Haul Trains[J].Journal of Vibration and Shock,2016,35(6):156-161.
[6] ANSARI M,ESMAILZADEH E,YOUNESIAN D.Longitudinal Dynamics of Freight Trains[J].International Journal of Heavy Vehicle Systems,2009,16(1/2):102-131.
[7] 马乐,岳祖润,冯怀平,等.重载铁路翻浆冒泥病害调查与研究对策[J].铁道标准设计,2015,59(8):51-55.MA Le,YUE Zurun,FENG Huaiping,et al.Investigation of Mud Pumping in Heavy Haul Railway Embankment and Countermeasures[J].Railway Standard Design,2015,59(8):51-55.
[8] 肖世伟,雷长顺.重载铁路路基荷载特征和路基动力响应分析[J].铁道工程学报,2014,187(4):51-56.XIAO Shiwei,LEI Changshun.Loading Characteristics and Dynamic Response Analysis of Subgrade for Heavy Haul Railway[J].Journal of Railway Engineering Society,2014,187(4):51-56.
[9] 晏伟光.重载铁路隧底结构动力响应及疲劳寿命研究[D].长沙:中南大学,2014.
[10] 冷伍明,刘文劼,赵春彦,等.重载铁路路基压实粗颗粒土填料动力破坏规律试验研究[J].岩土力学,2015,36(3):640-647.LENG Wuming,LIU Wenjie,ZHAO Chunyan,et al.Experimental Research on Dynamic Failure Rules of Compacted Coarse-grained Soil Filling in Heavy Haul Railway Subgrade[J].Rock and Soil Mechanics,2015,36(3):640-647.
[11] 李自强,王明年,于丽,等.重载铁路隧道基底结构的动压力响应[J].中国铁道科学,2016,37(1):71-78.LI Ziqiang,WANG Mingnian,YU Li,et al.Dynamic Pressure Response of Foundation Base Structure in Heavy Haul Railway Tunnel[J].China Railway Science,2016,37(1):71-78.
[12] 田杨,蔡力钢,刘志峰,等.重型龙门数控机床-基础系统承载变形[J].北京工业大学学报,2016,42(1):9-17.TIAN Yang,CAI Ligang,LIU Zhifeng,et al.Bearing Deformation of Heavy-duty CNC Machine Tools & Foundation System[J].Journal of Belting University of Technology,2016,42(1):9-17.
[13] 张顶立,张素磊,房倩,等.铁路运营隧道衬砌背后接触状态及其分析[J].岩石力学与工程学报,2013,32(2):217-225.ZHANG Dingli,ZHANG Sulei,FANG Qian,et.al.Study of Contact State behind Tunnel Lining in Pocess of Railway Operation and Its Analysis[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(2) :217-225.
[14] 王丽,张玉玲.新建重载铁路桥梁设计荷载标准的研究[J].土木工程学报,2013,46(3):103-109.WANG Li,ZHANG Yuling.Study on the Design Load Model for New Heavy Haul Railway Bridges[J].China Civil Engineering Journal,2013,46(3):103-109.
[15] 中华人民共和国铁道部.TB 10003—2005 铁路隧道设计规范[S].北京:中国铁道出版社,2005.
[16] 张志强,师晓权,何川.基于流固耦合的水底隧道仰拱受力分析与优化[J].铁道学报,2011,33(1):108-113.ZHANG Zhiqiang,SHI Xiaoquan,HE Chuan.Analysis of Optimizing Cross-section Shape of Subsea Tunnel[J].Journal of the China Railway Society,2011,33(1):108-113.
[17] 徐桂弘,刘学毅,杨荣山,等.列车荷载-水耦合作用下CRTSⅡ型板式无砟轨道道床裂纹扩展研究[J].铁道学报,2014,36(10):76-80.XU Guihong,LIU Xueyi,YANG Rongshan,et.al.Effect of Train Load and Water Coupling to Crack Extension of CRTS II Track[J].Journal of the China Railway Society,2014,36(10):76-80.
[18] 薛继连.30 t轴重下隧底密实度对隧底结构受力的影响及隧底加固效果分析[J].中国铁道科学,2015,36(1):90-95.XUE Jilian.Analysis of the Influence of Tunnel Bottom Compactness on Structure Stress and Strenthening Measures under 30 t Axle Load Train[J].China Railway Science,2015,36 (1):90-95.
[2] 聂志红,李亮,刘宝琛,等.秦沈客运专线路基振动测试分析[J].岩石力学与工程学报,2005,24(6):1067-1071.NIE Zhihong,LI Liang,LIU Baochen,et al.Testing and Analysis on Vibration of Subgrade for Qinhuangdao-Shenyang Railway[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(6):1067-1071.
[3] 冯怀平,王志鹏,常建梅,等.重载铁路基床动力湿化特性试验研究[J].土木工程学报,2015,48(S2):236-241.FENG Huaiping,WANG Zhipeng,CHANG Jianmei,et al.Experimental Study on Dynamic Slaking Deformation Characteristics of Heavy Haul Railway Subgrade Soil[J].China Civil Engineering Journal,2015,48(S2):236-241.
[4] 杨静静,张楠,战家旺,等.重载铁路线路加固体系车线动力分析[J].振动与冲击,2015,34(10):147-153.YANG Jingjing,ZHANG Nan,ZHAN Jiawang,et al.Vehicle-line Dynamic Analysis for a Heavy Rail Reinforcement System[J].Journal of Vibration and Shock,2015,34(10):147-153.
[5] 魏伟,王厂,张渊,等.重载铁路线路加固体系车线动力分析[J].振动与冲击,2016,35(6):156-161.WEI Wei,WANG Chang,ZHANG Yuan,et al.Simulation of Indexer Dynamic Load of Heavy Haul Trains[J].Journal of Vibration and Shock,2016,35(6):156-161.
[6] ANSARI M,ESMAILZADEH E,YOUNESIAN D.Longitudinal Dynamics of Freight Trains[J].International Journal of Heavy Vehicle Systems,2009,16(1/2):102-131.
[7] 马乐,岳祖润,冯怀平,等.重载铁路翻浆冒泥病害调查与研究对策[J].铁道标准设计,2015,59(8):51-55.MA Le,YUE Zurun,FENG Huaiping,et al.Investigation of Mud Pumping in Heavy Haul Railway Embankment and Countermeasures[J].Railway Standard Design,2015,59(8):51-55.
[8] 肖世伟,雷长顺.重载铁路路基荷载特征和路基动力响应分析[J].铁道工程学报,2014,187(4):51-56.XIAO Shiwei,LEI Changshun.Loading Characteristics and Dynamic Response Analysis of Subgrade for Heavy Haul Railway[J].Journal of Railway Engineering Society,2014,187(4):51-56.
[9] 晏伟光.重载铁路隧底结构动力响应及疲劳寿命研究[D].长沙:中南大学,2014.
[10] 冷伍明,刘文劼,赵春彦,等.重载铁路路基压实粗颗粒土填料动力破坏规律试验研究[J].岩土力学,2015,36(3):640-647.LENG Wuming,LIU Wenjie,ZHAO Chunyan,et al.Experimental Research on Dynamic Failure Rules of Compacted Coarse-grained Soil Filling in Heavy Haul Railway Subgrade[J].Rock and Soil Mechanics,2015,36(3):640-647.
[11] 李自强,王明年,于丽,等.重载铁路隧道基底结构的动压力响应[J].中国铁道科学,2016,37(1):71-78.LI Ziqiang,WANG Mingnian,YU Li,et al.Dynamic Pressure Response of Foundation Base Structure in Heavy Haul Railway Tunnel[J].China Railway Science,2016,37(1):71-78.
[12] 田杨,蔡力钢,刘志峰,等.重型龙门数控机床-基础系统承载变形[J].北京工业大学学报,2016,42(1):9-17.TIAN Yang,CAI Ligang,LIU Zhifeng,et al.Bearing Deformation of Heavy-duty CNC Machine Tools & Foundation System[J].Journal of Belting University of Technology,2016,42(1):9-17.
[13] 张顶立,张素磊,房倩,等.铁路运营隧道衬砌背后接触状态及其分析[J].岩石力学与工程学报,2013,32(2):217-225.ZHANG Dingli,ZHANG Sulei,FANG Qian,et.al.Study of Contact State behind Tunnel Lining in Pocess of Railway Operation and Its Analysis[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(2) :217-225.
[14] 王丽,张玉玲.新建重载铁路桥梁设计荷载标准的研究[J].土木工程学报,2013,46(3):103-109.WANG Li,ZHANG Yuling.Study on the Design Load Model for New Heavy Haul Railway Bridges[J].China Civil Engineering Journal,2013,46(3):103-109.
[15] 中华人民共和国铁道部.TB 10003—2005 铁路隧道设计规范[S].北京:中国铁道出版社,2005.
[16] 张志强,师晓权,何川.基于流固耦合的水底隧道仰拱受力分析与优化[J].铁道学报,2011,33(1):108-113.ZHANG Zhiqiang,SHI Xiaoquan,HE Chuan.Analysis of Optimizing Cross-section Shape of Subsea Tunnel[J].Journal of the China Railway Society,2011,33(1):108-113.
[17] 徐桂弘,刘学毅,杨荣山,等.列车荷载-水耦合作用下CRTSⅡ型板式无砟轨道道床裂纹扩展研究[J].铁道学报,2014,36(10):76-80.XU Guihong,LIU Xueyi,YANG Rongshan,et.al.Effect of Train Load and Water Coupling to Crack Extension of CRTS II Track[J].Journal of the China Railway Society,2014,36(10):76-80.
[18] 薛继连.30 t轴重下隧底密实度对隧底结构受力的影响及隧底加固效果分析[J].中国铁道科学,2015,36(1):90-95.XUE Jilian.Analysis of the Influence of Tunnel Bottom Compactness on Structure Stress and Strenthening Measures under 30 t Axle Load Train[J].China Railway Science,2015,36 (1):90-95.