CRTS Ⅱ型无砟轨道结构体系施工阶段行为分析
|
摘要
CRTSⅡ型板式无砟轨道脱胎于德国博格纵连板式无砟轨道,如今已在我国京津城际、京沪高铁的建设中得到应用。然而中国国情与国外不同,对国外的技术应结合实际情况进行消化吸收,从而创建具有中国自主知识产权的无砟轨道技术。本文从无砟轨道施工建设到投入运营的时间主线入手,重点研究轨道板体系在高速铁路运营前与高速铁路运营后两个时间阶段内特定工况下的应力变形情况。
首先,运用ABAQUS有限元软件,在考虑自重、板中配筋、轨道板预留缝构造及板间复杂接触作用等因素的基础上,建立了路基上CRTSⅡ型无砟轨道整体空间模型,并使用该模型与设计结果进行了校准；
其次,建立了CRTSⅡ型无砟轨道从施工建设到投入运营的时间主线,对各时间段内轨道板体系所受工况进行了分析,并确定了取值；
最后,通过以已建立的时间主线为基准,顺次计算了每个时间段内轨道板、底座板在特定工况下的应力变形情况,得出如下主要结论：
1)施工阶段,轨道板安装前,底座板会在温度梯度的周期性作用下发生循环的翘曲变形；钢轨的安装则会减小轨道板的翘曲变形,增大翘曲应力。
2)施工完成后,高速铁路投入运营前,整体降温会引起轨道板预留缝开裂；温度梯度会导致轨道板发生上鼓或下凹变形,引起板中脱空或板边离缝现象。
3)轨道板预留缝开裂对底座板受力有很大影响,特别是结构处于运营阶段,列车垂向荷载作用于板端时,在整体降温或负温度梯度影响下,底座板板面相应于轨道板开裂处会因过大纵向拉应力而损伤开裂。
可见,无砟轨道施工时应采取板面清洁、压紧、保温等措施,保证各部件间的粘结性,并提高底座板的施工质量,加强监控和维护,确保行车安全
CRTS II slab ballastless track, based on Bogl longitudinal connected ballastless track, has been used in Beijing-Tianjin Intercity Railway and Beijing-Shanghai Express Railway in our country. However, the situation of the foreign countries is of great discrepancy to our country, and it is important create our home-made ballastless track technology based on the achievements of the predecessors in foreign countries. This paper will analysis the behavior of different component of the ballastless track in every stage from construction to operation.
First of all, a finite space mechanical model of CRTSⅡslab ballastless track on the soil formation is established by using finite element software-ABAQUS, and the results of the calculation model have been compared with the results of the design. In this model, the factors of steel ordinances of slab, baste stitch on track slab and contact are considered.
Secondly, a time axes from construction to operation of the slab ballastless track is established and the value of the load in every period of time is determined.
Finally, the influences of different loads to CRTSⅡslab ballastless track during every period of time are obtained:
1) In construction stage, before track slab is installed, cycling warping deformation of base slab will be occurred because of the periodic temperature gradient load. When rail have been installed, the warping deformation of track slab will reduce and the warping stress of track slab will increase.
2) When construction is completed, before the high-speed railway is put into operation, the baste stitch on track slab will have cracking problem under the load of lower temperature, the cyclical variation of temperature gradient will cause track slab have warping deformation and gapping problems.
3) The cracking problem of baste stitch on track slab have great influence on base slab especially in stage of operation when vehicle load is located in the edge of track slab, base slab will have cracking problem because of the load of lower temperature or negative temperature gradient.
Therefore, heat insulation work and surface clean work should be taken during the construction stage in order to ensure the different component of the ballastless track has good caking property; the quality of base slab should be improved and the maintenance is needed in order to ensure security.
首先,运用ABAQUS有限元软件,在考虑自重、板中配筋、轨道板预留缝构造及板间复杂接触作用等因素的基础上,建立了路基上CRTSⅡ型无砟轨道整体空间模型,并使用该模型与设计结果进行了校准；
其次,建立了CRTSⅡ型无砟轨道从施工建设到投入运营的时间主线,对各时间段内轨道板体系所受工况进行了分析,并确定了取值；
最后,通过以已建立的时间主线为基准,顺次计算了每个时间段内轨道板、底座板在特定工况下的应力变形情况,得出如下主要结论：
1)施工阶段,轨道板安装前,底座板会在温度梯度的周期性作用下发生循环的翘曲变形；钢轨的安装则会减小轨道板的翘曲变形,增大翘曲应力。
2)施工完成后,高速铁路投入运营前,整体降温会引起轨道板预留缝开裂；温度梯度会导致轨道板发生上鼓或下凹变形,引起板中脱空或板边离缝现象。
3)轨道板预留缝开裂对底座板受力有很大影响,特别是结构处于运营阶段,列车垂向荷载作用于板端时,在整体降温或负温度梯度影响下,底座板板面相应于轨道板开裂处会因过大纵向拉应力而损伤开裂。
可见,无砟轨道施工时应采取板面清洁、压紧、保温等措施,保证各部件间的粘结性,并提高底座板的施工质量,加强监控和维护,确保行车安全
CRTS II slab ballastless track, based on Bogl longitudinal connected ballastless track, has been used in Beijing-Tianjin Intercity Railway and Beijing-Shanghai Express Railway in our country. However, the situation of the foreign countries is of great discrepancy to our country, and it is important create our home-made ballastless track technology based on the achievements of the predecessors in foreign countries. This paper will analysis the behavior of different component of the ballastless track in every stage from construction to operation.
First of all, a finite space mechanical model of CRTSⅡslab ballastless track on the soil formation is established by using finite element software-ABAQUS, and the results of the calculation model have been compared with the results of the design. In this model, the factors of steel ordinances of slab, baste stitch on track slab and contact are considered.
Secondly, a time axes from construction to operation of the slab ballastless track is established and the value of the load in every period of time is determined.
Finally, the influences of different loads to CRTSⅡslab ballastless track during every period of time are obtained:
1) In construction stage, before track slab is installed, cycling warping deformation of base slab will be occurred because of the periodic temperature gradient load. When rail have been installed, the warping deformation of track slab will reduce and the warping stress of track slab will increase.
2) When construction is completed, before the high-speed railway is put into operation, the baste stitch on track slab will have cracking problem under the load of lower temperature, the cyclical variation of temperature gradient will cause track slab have warping deformation and gapping problems.
3) The cracking problem of baste stitch on track slab have great influence on base slab especially in stage of operation when vehicle load is located in the edge of track slab, base slab will have cracking problem because of the load of lower temperature or negative temperature gradient.
Therefore, heat insulation work and surface clean work should be taken during the construction stage in order to ensure the different component of the ballastless track has good caking property; the quality of base slab should be improved and the maintenance is needed in order to ensure security.
引文
[1]Shiraz D. Tayabji, David Bilow. Concrete Slab Track State of the Practice. Transportation Research Record:Journal of the Transportation Research Board,2001,1742:87～96
[2]Esveld C. Innovations in Railway Track. Rail technology advancements in the Netherlands.1997
[3]Henn, W D. System comparison:ballasted track-slab track. Railway Engineering International,1993,22:6～9
[4]陈扬.桥上CRTS I型板式无砟轨道纵向力分析：[硕士学位论文].成都：西南交通大学,2009
[5]车晓娟.轨道板配筋对温度裂缝的影响分析：[硕士学位论文].成都：西南交通大学,2007
[6]陈希成.高速铁路板式轨道结构力学分析：[硕士学位论文].成都：西南交通大学,2008
[7]Bernhard Lichtberger. Track Compendium. Hamburg:Eurailpress, 2005:309～332
[8]沈东升.无砟轨道设计理论及方法综述.铁道建筑,2008(2)：99~100
[9]刘永存.TBS无砟轨道结构设计与参数分析：[硕士学位论文].长沙：中南大学,2009
[10]Bachmann H. The Rheda Slab Track System-30 Years of Development. Innovation for Railway Track. Promain No.1, Fraunhofer Institute IITB, 2001
[11]邓存宥.大跨桥上纵连板式无砟轨道结构分析及参数研究：[硕士学位论文].成都：西南交通大学,2007
[12]林红松.基于断裂和损伤力学的无砟轨道静动力特性研究：[博士学位论文].成都：西南交通大学,2009
[13]Viktor Enokel, Konrad Nubel. On the Track with Ziiblin. Railwway Technical Review,2006, (special):43～46
[14]BoglS. Slab Track System-FF Bogl. Railway Technical Review,2006, (special):32～35
[15]Ando K, HORIKE T, MOMOYA Y, etal. Performance Tests and Basic Design on Solid-Bed Track on Asphalt Pavement. RTRI Report,2000,14(4): 19～24
[16]姚力.遂渝线无砟轨道综合试验段路基地段无砟轨道设计与施工：[硕士学位论文].成都：西南交通大学,2009
[17]何华武.我国客运专线应大力发展无碴轨道.中国铁路,2005(1)：11~15
[18]西南交通大学.埋入式轨枕.中国专利,CN2839343,2006-11-22
[19]李君.减震型无砟轨道合理刚度的动力学分析：[硕士学位论文].成都：西南交通大学,2010
[20]吴春雷.纵向长枕无砟轨道力学性能分析研究：[硕士学位论文].成都：西南交通大学,2009
[21]中国铁道科学研究院.京沪高速铁路纵连板式无砟轨道设计原理与方法.2008
[22]Coenraad Esveld. Recent developments in slab track. European Railway Review,2003, (09):81～85
[23]安国栋.高速铁路无砟轨道技术标准与质量控制.北京：中国铁道出版社,2009.54~59
[24]王森荣.板式无砟轨道温度力研究：[硕士学位论文].成都：西南交通大学,2007
[25]Lechner B. Der Temperaturgadient als Bemessungsgrosse bei der Dimensionierung von Dicken Betondecken. Miinchen:Technische Universitat Munchen,1996
[26]Bogl Company of German. Calculation and Design report of Bogl longitudinal connected ballastless track. Tianjin:Jing-Jin Intercity High-speed Railway Design Department of Bogl Company of German,2006
[27]车晓娟,李成辉.无砟轨道轨道板配筋对控制温度裂缝影响的研究.铁道建筑,2007, (10)：84~86
[28]王森荣,孙立,李秋毅,等.无砟轨道轨道板温度测量与温度应力分析.铁道工程学报,2009, (2)：52~54
[29]石现峰,李建斌.温度对板式无砟轨道结构的影响研究.铁道工程学报,2008, (5)：30~45
[30]王继军,尤瑞林,王梦,江成.单元板式无砟轨道结构轨道板温度翘曲变形研究.中国铁道科学,2010,31(3)：9~14
[31]张澜.温度作用下双块式无砟轨道道床板有限元分析：[硕士学位论文].武汉：武汉理工大学,2009
[32]高俊英.土质路基上CRTS I型板温度力分析：[硕士学位论文].成都：西南交通大学,2008
[33]郝玉娟.多坐标微进给平台的设计及温度场的有限元分析：[硕士学位论文].天津：天津大学,2004
[34]刑建强.高压油管故障分析及改进措施：[硕士学位论文].大连：大连理工大学,2006
[35]李琼阳.太阳能帆板的热疲劳分析：[硕士学位论文].成都：西南交通大学,2009
[36]李维特,黄宝海,毕仲波.热应力理论分析及应用.北京：中国电力出版社,2004.59~61
[37]赵腾伦.ABAQUS6.6在机械工程中的应用.北京：中国水利水电出版社,2007.168~170
[38]王玉镯,傅传国ABAQUS结构工程分析及实例详解.北京：中国建筑工业出版社,2010.1~3
[39]Dassault system. Abaqus/CAE User's Manual. Pairs:Dassault company of France,2005
[40]过镇海,时旭东.钢筋混凝土原理和分析.北京：清华大学出版社,2007.242~243
[41]高子兰.大孔径预应力连体式圆形倒虹吸结构研究：[硕士学位论文].邯郸：河北工程大学,2007
[42]宋新伟.再生混凝土梁受弯性能试验研究：[硕士学位论文].郑州：郑州大学,2006
[43]蔡绍怀.抗裂度塑性系数γs取值方法的改进.北京：中国建筑工业出版社,1977.298~315
[44]Jean Lematire. A Course on Damage Mechanica. Berlin: Spring-Verlag,1992
[45]范华林,金丰年.岩石损伤定义中的有效模量法.岩石力学与工程学报,2000,19(4)：430~433
[46]赵坪锐.客运专线无碴轨道设计理论与方法研究：[博士学位论文].成都：西南交通大学,2008
[47]Deutsches Institut fur Normung e. V. DIN 1045.Concrete, reinforced and prestressed concrete structures. Berlin:Beuth,2009-08
[48]中华人民共和国交通部JTGD60-2004中国公路桥涵设计通用规范.北京：人民交通出版社,2004-10-01
[49]刘晓,季日丞.预应力混凝士箱梁温度应力探讨.甘肃科技纵横,2005,34 (4) ： 115~116
[50]刘辉,庞会文,侯鹏CRTS Ⅱ型板式无砟轨道施工技术.铁道标准设计,2009, (增刊)：28~32
[2]Esveld C. Innovations in Railway Track. Rail technology advancements in the Netherlands.1997
[3]Henn, W D. System comparison:ballasted track-slab track. Railway Engineering International,1993,22:6～9
[4]陈扬.桥上CRTS I型板式无砟轨道纵向力分析：[硕士学位论文].成都：西南交通大学,2009
[5]车晓娟.轨道板配筋对温度裂缝的影响分析：[硕士学位论文].成都：西南交通大学,2007
[6]陈希成.高速铁路板式轨道结构力学分析：[硕士学位论文].成都：西南交通大学,2008
[7]Bernhard Lichtberger. Track Compendium. Hamburg:Eurailpress, 2005:309～332
[8]沈东升.无砟轨道设计理论及方法综述.铁道建筑,2008(2)：99~100
[9]刘永存.TBS无砟轨道结构设计与参数分析：[硕士学位论文].长沙：中南大学,2009
[10]Bachmann H. The Rheda Slab Track System-30 Years of Development. Innovation for Railway Track. Promain No.1, Fraunhofer Institute IITB, 2001
[11]邓存宥.大跨桥上纵连板式无砟轨道结构分析及参数研究：[硕士学位论文].成都：西南交通大学,2007
[12]林红松.基于断裂和损伤力学的无砟轨道静动力特性研究：[博士学位论文].成都：西南交通大学,2009
[13]Viktor Enokel, Konrad Nubel. On the Track with Ziiblin. Railwway Technical Review,2006, (special):43～46
[14]BoglS. Slab Track System-FF Bogl. Railway Technical Review,2006, (special):32～35
[15]Ando K, HORIKE T, MOMOYA Y, etal. Performance Tests and Basic Design on Solid-Bed Track on Asphalt Pavement. RTRI Report,2000,14(4): 19～24
[16]姚力.遂渝线无砟轨道综合试验段路基地段无砟轨道设计与施工：[硕士学位论文].成都：西南交通大学,2009
[17]何华武.我国客运专线应大力发展无碴轨道.中国铁路,2005(1)：11~15
[18]西南交通大学.埋入式轨枕.中国专利,CN2839343,2006-11-22
[19]李君.减震型无砟轨道合理刚度的动力学分析：[硕士学位论文].成都：西南交通大学,2010
[20]吴春雷.纵向长枕无砟轨道力学性能分析研究：[硕士学位论文].成都：西南交通大学,2009
[21]中国铁道科学研究院.京沪高速铁路纵连板式无砟轨道设计原理与方法.2008
[22]Coenraad Esveld. Recent developments in slab track. European Railway Review,2003, (09):81～85
[23]安国栋.高速铁路无砟轨道技术标准与质量控制.北京：中国铁道出版社,2009.54~59
[24]王森荣.板式无砟轨道温度力研究：[硕士学位论文].成都：西南交通大学,2007
[25]Lechner B. Der Temperaturgadient als Bemessungsgrosse bei der Dimensionierung von Dicken Betondecken. Miinchen:Technische Universitat Munchen,1996
[26]Bogl Company of German. Calculation and Design report of Bogl longitudinal connected ballastless track. Tianjin:Jing-Jin Intercity High-speed Railway Design Department of Bogl Company of German,2006
[27]车晓娟,李成辉.无砟轨道轨道板配筋对控制温度裂缝影响的研究.铁道建筑,2007, (10)：84~86
[28]王森荣,孙立,李秋毅,等.无砟轨道轨道板温度测量与温度应力分析.铁道工程学报,2009, (2)：52~54
[29]石现峰,李建斌.温度对板式无砟轨道结构的影响研究.铁道工程学报,2008, (5)：30~45
[30]王继军,尤瑞林,王梦,江成.单元板式无砟轨道结构轨道板温度翘曲变形研究.中国铁道科学,2010,31(3)：9~14
[31]张澜.温度作用下双块式无砟轨道道床板有限元分析：[硕士学位论文].武汉：武汉理工大学,2009
[32]高俊英.土质路基上CRTS I型板温度力分析：[硕士学位论文].成都：西南交通大学,2008
[33]郝玉娟.多坐标微进给平台的设计及温度场的有限元分析：[硕士学位论文].天津：天津大学,2004
[34]刑建强.高压油管故障分析及改进措施：[硕士学位论文].大连：大连理工大学,2006
[35]李琼阳.太阳能帆板的热疲劳分析：[硕士学位论文].成都：西南交通大学,2009
[36]李维特,黄宝海,毕仲波.热应力理论分析及应用.北京：中国电力出版社,2004.59~61
[37]赵腾伦.ABAQUS6.6在机械工程中的应用.北京：中国水利水电出版社,2007.168~170
[38]王玉镯,傅传国ABAQUS结构工程分析及实例详解.北京：中国建筑工业出版社,2010.1~3
[39]Dassault system. Abaqus/CAE User's Manual. Pairs:Dassault company of France,2005
[40]过镇海,时旭东.钢筋混凝土原理和分析.北京：清华大学出版社,2007.242~243
[41]高子兰.大孔径预应力连体式圆形倒虹吸结构研究：[硕士学位论文].邯郸：河北工程大学,2007
[42]宋新伟.再生混凝土梁受弯性能试验研究：[硕士学位论文].郑州：郑州大学,2006
[43]蔡绍怀.抗裂度塑性系数γs取值方法的改进.北京：中国建筑工业出版社,1977.298~315
[44]Jean Lematire. A Course on Damage Mechanica. Berlin: Spring-Verlag,1992
[45]范华林,金丰年.岩石损伤定义中的有效模量法.岩石力学与工程学报,2000,19(4)：430~433
[46]赵坪锐.客运专线无碴轨道设计理论与方法研究：[博士学位论文].成都：西南交通大学,2008
[47]Deutsches Institut fur Normung e. V. DIN 1045.Concrete, reinforced and prestressed concrete structures. Berlin:Beuth,2009-08
[48]中华人民共和国交通部JTGD60-2004中国公路桥涵设计通用规范.北京：人民交通出版社,2004-10-01
[49]刘晓,季日丞.预应力混凝士箱梁温度应力探讨.甘肃科技纵横,2005,34 (4) ： 115~116
[50]刘辉,庞会文,侯鹏CRTS Ⅱ型板式无砟轨道施工技术.铁道标准设计,2009, (增刊)：28~32