预应力混凝土曲线箱梁桥支座布置效应研究
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摘要
随着我国高等级公路建设发展以及城市立交桥建设的需要,曲线梁桥以其实用、经济、美观的特点得到了广泛的应用和发展,但是在曲线梁桥的使用过程中也存在很多问题。本文回顾了目前预应力混凝土曲线梁的发展及研究概况,针对曲线梁桥在施工和营运过程中出现的支座脱空、梁体翻转、梁体侧移、墩梁裂缝等严重影响桥梁安全的问题,结合曲线梁的力学特点进行了详细分析,并阐述了产生这些病害的原因和影响因素。依据众多曲线梁桥的建设和设计经验,确定曲线梁桥支座调整对曲线梁支座反力影响效应作为本文的研究方向,重点分析调整支座布置方式对曲线梁桥的支座反力和内力影响效应。
目前曲线梁室内模型试验研究匮乏,本文依托陕西省交通科技资助项目—《曲线预应力混凝土箱梁桥设计方法与承载力研究(03-01K)》进行了曲线梁室内模型试验研究,通过试验分析在不同中支座偏心距离、端支座间距变化下自重对曲线梁支座反力、梁体内力的影响效应。在模型试验的基础上,建立有限元计算模型与试验结果进行对比分析,理论计算与模型试验结论吻合较好,在计算模型能较好反映试验过程的基础上,研究支座调整后曲线梁跨径变化、曲率半径、预应力作用和偏心活载作用对支反力的影响效应参数分析。
通过模型试验和有限元计算分析相结合的方法,总结了曲线梁在不同支座布置方式下跨径、曲率半径、预应力作用和偏心活载作用对曲线梁支座反力、内力影响效应的一般规律,同时也对曲线梁桥支座布置提出一些建议措施,为以后在曲线梁桥设计和施工中合理布置支座提供较好的试验和理论参考。
With the development of highway and urban overpass construction, curved girder bridge is widely utilized and developed with its economic, aesthetic and practical, but many problems occurs during the service stage of curved girder bridge. This paper reviewed the current development and research condition on the curved prestressed concrete beams, aimed at the problem, such as bearing off air, beams flip, body sway, pier beam cracks, which severely affected the safety of bridge , analyzed the the mechanical characteristics of curved beam, and illustrated the reasons and influencing factors for these diseases and. Combined with the construction and design experience of a large number of curved girder bridge, the research directions in this article is determined to be the effect of the support layout to the curved beam. The emphasis is focused on analysis of effect of arrangement of eccentric center bearing of curved girder bridge to the reaction and the internal force of curved beam.
This paper is based on the deficiency of current study on the indoor model test of curved girder, relied on the project funded by science and technology of communication in Shaanxi Province - "research on design methods and ultimate bearing capacity of curved prestressed concrete box girder bridge (03-01K)" indoor model test is carried out. Through this test, effect of reactions, internal force of cured girder, which changed with the change of distance from eccentric center of mid support and distance between the side supports, is realized. In addition, finite element model is analyzed to test the correctness of the result of the model test. the conclusions of the model test is well demonstrated by finite element model, which is the established by beam elements. based on this result, the effect of reaction and internal force of curved girder is studied through changing the span of the finite model. Because the radius of curvature of the curved girder is another factor of the curved girder, this paper also simulated the change of curvature of curved girder bridge through the finite element model, studied the effect of reactions, moments and torque to the radius of curvature of the curved beam
Through the indoor model tests and finite element analysis, the general regulation of the reaction and internal force, which on the condition of different layout of supports is summarized. The effect of radius of curvature to the curved girder is also summarized, It is provided a good test and theoretical reference for the design and rational arrangement of support during the construction stage.
目前曲线梁室内模型试验研究匮乏,本文依托陕西省交通科技资助项目—《曲线预应力混凝土箱梁桥设计方法与承载力研究(03-01K)》进行了曲线梁室内模型试验研究,通过试验分析在不同中支座偏心距离、端支座间距变化下自重对曲线梁支座反力、梁体内力的影响效应。在模型试验的基础上,建立有限元计算模型与试验结果进行对比分析,理论计算与模型试验结论吻合较好,在计算模型能较好反映试验过程的基础上,研究支座调整后曲线梁跨径变化、曲率半径、预应力作用和偏心活载作用对支反力的影响效应参数分析。
通过模型试验和有限元计算分析相结合的方法,总结了曲线梁在不同支座布置方式下跨径、曲率半径、预应力作用和偏心活载作用对曲线梁支座反力、内力影响效应的一般规律,同时也对曲线梁桥支座布置提出一些建议措施,为以后在曲线梁桥设计和施工中合理布置支座提供较好的试验和理论参考。
With the development of highway and urban overpass construction, curved girder bridge is widely utilized and developed with its economic, aesthetic and practical, but many problems occurs during the service stage of curved girder bridge. This paper reviewed the current development and research condition on the curved prestressed concrete beams, aimed at the problem, such as bearing off air, beams flip, body sway, pier beam cracks, which severely affected the safety of bridge , analyzed the the mechanical characteristics of curved beam, and illustrated the reasons and influencing factors for these diseases and. Combined with the construction and design experience of a large number of curved girder bridge, the research directions in this article is determined to be the effect of the support layout to the curved beam. The emphasis is focused on analysis of effect of arrangement of eccentric center bearing of curved girder bridge to the reaction and the internal force of curved beam.
This paper is based on the deficiency of current study on the indoor model test of curved girder, relied on the project funded by science and technology of communication in Shaanxi Province - "research on design methods and ultimate bearing capacity of curved prestressed concrete box girder bridge (03-01K)" indoor model test is carried out. Through this test, effect of reactions, internal force of cured girder, which changed with the change of distance from eccentric center of mid support and distance between the side supports, is realized. In addition, finite element model is analyzed to test the correctness of the result of the model test. the conclusions of the model test is well demonstrated by finite element model, which is the established by beam elements. based on this result, the effect of reaction and internal force of curved girder is studied through changing the span of the finite model. Because the radius of curvature of the curved girder is another factor of the curved girder, this paper also simulated the change of curvature of curved girder bridge through the finite element model, studied the effect of reactions, moments and torque to the radius of curvature of the curved beam
Through the indoor model tests and finite element analysis, the general regulation of the reaction and internal force, which on the condition of different layout of supports is summarized. The effect of radius of curvature to the curved girder is also summarized, It is provided a good test and theoretical reference for the design and rational arrangement of support during the construction stage.
引文
[1]邵容光,夏淦.混凝土弯梁桥[M].北京:人民交通出版社,1996
[2]V.Z.Vlasov.Thin-Walled Elastic Beams[M].Washington D.C:National Science Foundation,1961
[3]R.Dabrowski.Curved Thin-Walled Girders[M].Translation No.144.London:Cement and Concrete Association,1968
[4]李国豪.桥梁与结构理论研究[M].上海:上海科学技术文献出版社,1983
[5]李明昭.断面可变形的矩形箱式薄壁圆弧曲杆静力分析法[J].同济大学学报,1982(2):39-52
[6]夏淦.变曲率曲梁挠曲扭转分析[J].土木工程学报,1991,24(2):68-73
[7]谢旭,黄剑源.薄壁断面曲线高架桥的空间结构分析法[J].土木工程学报,1993,26(6):3-12
[8]黄剑源,谢旭.薄壁曲线杆系结构空间分析的刚度法[J].土木工程学报,1994,27(5):3-19
[9]孙广华.曲线梁桥计算[M].北京:人民交通出版社,1995
[10]刑志成.弯斜桥计算理论与实用计算[M].北京:人民交通出版社,1994
[11]李惠生,张罗溪.曲线桥梁结构分析[M].北京:中国铁道出版社,1992
[12]Lyons L.P.R.A general mite element system with special reference to the analysis of celluar structures[D].Imperial College of Science and Technology,London,England,1977
[13]Sawko,F.and Merriman,P.A.Finite Element Analysis of Bxidge Curved in Plan[C].Developments in Bridge Design and Collstruction,Crosby Lockwood & Son Ltd,1971:334-346
[14]Jirousek J,Bouberguig A.A macro-element analysis of prestressed curved box-girder bridges[J].Computers & Structures,1979,10(3):467-482
[15]Adet Fam,Cart Turkstra,A finite element scheme for box bridge analysis[J].Computers & Structures,1975,5(2):179-186
[16]Iph K,Aneja A.M.,Frederic Roll M.Model analysis of curved box beam highway bridge[J].Journal of Structural Division,ASCE,1971(12):2861-2878
[17]杨冰.预应力混凝土和钢筋混凝土曲线箱梁的非线性有限元分析和试验[D].上海:同济大学,1987
[18]项贻强.斜弯桥梁的空间分析理论及其试验研究[D].杭州:浙江大学,2000
[19]徐艳秋,许克宾,王丽.薄壁弯梁桥空间有限元分析[J].土木工程学报,2003,36(2):58-62
[20]林同炎,NED H.BURNS.预应力混凝土结构设计(第三版)[M].北京:中国铁道出版社,1983
[21]叶见曙.结构设计原理[M].北京:人民交通出版社,2004
[22]Hartl H,Sparowitz L,Elgamal A.The 3D computational Modeling of Reinforced and Prestressed Concrete Structures”,Bergmeister K.(ed.),Proceedings of the 3rd International PhD Symposium in Civil Engineering,Vienna,2000,vol.2
[23]何雄君,邵吉林等.预应力混凝土桥梁钢混协作关系研究[J].武汉理工大学学报,2004,28(3):330-333
[24]长安大学.预应力混凝土连续弯箱梁桥预应力损失参数研究报告[R].西安:长安大学,2000
[25]刘志文,宋一凡.空间曲线预应力束摩阻损失参数[J].西安公路交通大学学报.2001,21(3):42-44
[26]宋玉普,车轶等.空间多曲线型预应力钢索的预应力摩擦损失研究[J].土木工程学报.2002,35(6):105-108
[27]李卫国,徐步青,胡克辉.空间多曲线钢索预应力摩擦损失试验研究[J].石家庄铁道学院学报.2000,13(1):14-17
[28]胡光祥,陈东杰等.空间曲线预应力束摩擦损失的测试和摩擦系数反演[J].建筑科学.2004,20(5):26-29
[29]钟铭,李文会,袁长卿.曲线梁桥预应力束摩阻损失计算[J].石家庄铁道学院学报,1998,11(4):48-53
[30]T.Y.Lin International,Las Lomas.Bridge-Causes of Structural Failure[R].Report to Department of Army,San Francisco District Corp.of Engineers,1979
[31]T.Y.Lin International,“Interim Report-Kapiolani Interchange On-Ramp[R].Project No.I-HI-1(159):24,”Hawaii DOT,1982
[32]Podolny,W.The cause of crocking in post-tensioned concrete box girder bridges and retrofit procedures,PCI J,1985,30(2):82-139
[33]Caltrans.Bridge Memo-to-Designers,Vol.1[M],California Department of Transportation,Sacramento,1996
[34]王爱梅,孙广华.曲线梁桥预应力钢索侧向崩出的预防[J].江苏交通科技,2000,5:17-19
[35]王钧利.曲线箱梁桥的病害分析及设计对策[J].中外公路,2005,25(4):102-105
[36]朱振锋.预应力平面曲线梁钢索侧向崩出的探讨[J].广东土木与建筑,2002,4:31-33
[37]何维利.独柱支承的曲线梁桥设计[J].北京建筑工程学院学报,200l,17(4):23-28
[38]杨党旗,崔飞.独墩单铰支座曲线梁桥通病分析及治理[J].城市道桥与防洪,2003,3:35-38
[39]梁志广,高岩,庄军生.预应力混凝土连续曲线梁桥板式橡胶支座的状态评定[J].中国市政工程,2005,4:23-25
[40]彭大文,林希鹤.预应力连续弯箱梁的支座反力研究[J].福州大学学报,1998,26(6):63-68
[41]单德山,李乔.高速铁路曲线梁桥的支座布置形式初探[J].重庆交通学院学报,2001,20(2):1-5
[42]梁长海,杨成斌.支座布置对预应力混凝土曲线梁桥内力影响的研究[J].工程建设与档案,2005,19(5):393-396
[43]蒋志刚,刘滋银.平面曲线梁桥支座位移对内力的影响[J].湖南交通科技,1998,24(4):34-38
[44]孙全胜,王学松.连续箱梁斜弯桥有机玻璃模型静力试验和分析[J].东北公路,2002,25(4):60-61
[45]刘志文.曲线梁桥结构分析、模型试验及程序研制[D].西安:长安大学,2001
[46]李建慧,宋徐明.铁路独柱支承弯梁桥扭矩调整[J].华东交通大学学报,2003,20(2):25-28
[47]李乔.薄壁曲箱梁的空间分析理论[D].成都:西南交通大学,1988
[48]AASHTO GHC-4.Guide Specification for Horizontally Curved Steel Girder Highway[S].Washington D.C,2003
[49]Campbell T.Ivan,Lee E.Y.K.,Chan K.S.STRENGTH OF CONTINUOUS HORIZONTALLY CURVED POST-TENSIONED BEAMS[J].Journal of the Prestressed Concrete Institute,1980,24(5):118-145
[50]Dean William Van Landuyt.The Effect of Duct Arrangement on Breakout of Internal Post-tensioning Tendons in Horizontally Curved Concrete Box Girder Webs[D].University of Texas at Austin,1991
[51]谌润水,胡钊芳.公路桥梁荷载试验[M].北京:民交通出版社,2003
[52]Yang Y B,Kuo S R,Chherng Y D.Curved beam elements for nonlinear analysis[J].Eng.Mech.,1989115(4):840-855
[53]许强.薄壁曲梁线弹性理论和弹塑性稳定极限承载力分析[D].杭州:浙江大学,2002
[2]V.Z.Vlasov.Thin-Walled Elastic Beams[M].Washington D.C:National Science Foundation,1961
[3]R.Dabrowski.Curved Thin-Walled Girders[M].Translation No.144.London:Cement and Concrete Association,1968
[4]李国豪.桥梁与结构理论研究[M].上海:上海科学技术文献出版社,1983
[5]李明昭.断面可变形的矩形箱式薄壁圆弧曲杆静力分析法[J].同济大学学报,1982(2):39-52
[6]夏淦.变曲率曲梁挠曲扭转分析[J].土木工程学报,1991,24(2):68-73
[7]谢旭,黄剑源.薄壁断面曲线高架桥的空间结构分析法[J].土木工程学报,1993,26(6):3-12
[8]黄剑源,谢旭.薄壁曲线杆系结构空间分析的刚度法[J].土木工程学报,1994,27(5):3-19
[9]孙广华.曲线梁桥计算[M].北京:人民交通出版社,1995
[10]刑志成.弯斜桥计算理论与实用计算[M].北京:人民交通出版社,1994
[11]李惠生,张罗溪.曲线桥梁结构分析[M].北京:中国铁道出版社,1992
[12]Lyons L.P.R.A general mite element system with special reference to the analysis of celluar structures[D].Imperial College of Science and Technology,London,England,1977
[13]Sawko,F.and Merriman,P.A.Finite Element Analysis of Bxidge Curved in Plan[C].Developments in Bridge Design and Collstruction,Crosby Lockwood & Son Ltd,1971:334-346
[14]Jirousek J,Bouberguig A.A macro-element analysis of prestressed curved box-girder bridges[J].Computers & Structures,1979,10(3):467-482
[15]Adet Fam,Cart Turkstra,A finite element scheme for box bridge analysis[J].Computers & Structures,1975,5(2):179-186
[16]Iph K,Aneja A.M.,Frederic Roll M.Model analysis of curved box beam highway bridge[J].Journal of Structural Division,ASCE,1971(12):2861-2878
[17]杨冰.预应力混凝土和钢筋混凝土曲线箱梁的非线性有限元分析和试验[D].上海:同济大学,1987
[18]项贻强.斜弯桥梁的空间分析理论及其试验研究[D].杭州:浙江大学,2000
[19]徐艳秋,许克宾,王丽.薄壁弯梁桥空间有限元分析[J].土木工程学报,2003,36(2):58-62
[20]林同炎,NED H.BURNS.预应力混凝土结构设计(第三版)[M].北京:中国铁道出版社,1983
[21]叶见曙.结构设计原理[M].北京:人民交通出版社,2004
[22]Hartl H,Sparowitz L,Elgamal A.The 3D computational Modeling of Reinforced and Prestressed Concrete Structures”,Bergmeister K.(ed.),Proceedings of the 3rd International PhD Symposium in Civil Engineering,Vienna,2000,vol.2
[23]何雄君,邵吉林等.预应力混凝土桥梁钢混协作关系研究[J].武汉理工大学学报,2004,28(3):330-333
[24]长安大学.预应力混凝土连续弯箱梁桥预应力损失参数研究报告[R].西安:长安大学,2000
[25]刘志文,宋一凡.空间曲线预应力束摩阻损失参数[J].西安公路交通大学学报.2001,21(3):42-44
[26]宋玉普,车轶等.空间多曲线型预应力钢索的预应力摩擦损失研究[J].土木工程学报.2002,35(6):105-108
[27]李卫国,徐步青,胡克辉.空间多曲线钢索预应力摩擦损失试验研究[J].石家庄铁道学院学报.2000,13(1):14-17
[28]胡光祥,陈东杰等.空间曲线预应力束摩擦损失的测试和摩擦系数反演[J].建筑科学.2004,20(5):26-29
[29]钟铭,李文会,袁长卿.曲线梁桥预应力束摩阻损失计算[J].石家庄铁道学院学报,1998,11(4):48-53
[30]T.Y.Lin International,Las Lomas.Bridge-Causes of Structural Failure[R].Report to Department of Army,San Francisco District Corp.of Engineers,1979
[31]T.Y.Lin International,“Interim Report-Kapiolani Interchange On-Ramp[R].Project No.I-HI-1(159):24,”Hawaii DOT,1982
[32]Podolny,W.The cause of crocking in post-tensioned concrete box girder bridges and retrofit procedures,PCI J,1985,30(2):82-139
[33]Caltrans.Bridge Memo-to-Designers,Vol.1[M],California Department of Transportation,Sacramento,1996
[34]王爱梅,孙广华.曲线梁桥预应力钢索侧向崩出的预防[J].江苏交通科技,2000,5:17-19
[35]王钧利.曲线箱梁桥的病害分析及设计对策[J].中外公路,2005,25(4):102-105
[36]朱振锋.预应力平面曲线梁钢索侧向崩出的探讨[J].广东土木与建筑,2002,4:31-33
[37]何维利.独柱支承的曲线梁桥设计[J].北京建筑工程学院学报,200l,17(4):23-28
[38]杨党旗,崔飞.独墩单铰支座曲线梁桥通病分析及治理[J].城市道桥与防洪,2003,3:35-38
[39]梁志广,高岩,庄军生.预应力混凝土连续曲线梁桥板式橡胶支座的状态评定[J].中国市政工程,2005,4:23-25
[40]彭大文,林希鹤.预应力连续弯箱梁的支座反力研究[J].福州大学学报,1998,26(6):63-68
[41]单德山,李乔.高速铁路曲线梁桥的支座布置形式初探[J].重庆交通学院学报,2001,20(2):1-5
[42]梁长海,杨成斌.支座布置对预应力混凝土曲线梁桥内力影响的研究[J].工程建设与档案,2005,19(5):393-396
[43]蒋志刚,刘滋银.平面曲线梁桥支座位移对内力的影响[J].湖南交通科技,1998,24(4):34-38
[44]孙全胜,王学松.连续箱梁斜弯桥有机玻璃模型静力试验和分析[J].东北公路,2002,25(4):60-61
[45]刘志文.曲线梁桥结构分析、模型试验及程序研制[D].西安:长安大学,2001
[46]李建慧,宋徐明.铁路独柱支承弯梁桥扭矩调整[J].华东交通大学学报,2003,20(2):25-28
[47]李乔.薄壁曲箱梁的空间分析理论[D].成都:西南交通大学,1988
[48]AASHTO GHC-4.Guide Specification for Horizontally Curved Steel Girder Highway[S].Washington D.C,2003
[49]Campbell T.Ivan,Lee E.Y.K.,Chan K.S.STRENGTH OF CONTINUOUS HORIZONTALLY CURVED POST-TENSIONED BEAMS[J].Journal of the Prestressed Concrete Institute,1980,24(5):118-145
[50]Dean William Van Landuyt.The Effect of Duct Arrangement on Breakout of Internal Post-tensioning Tendons in Horizontally Curved Concrete Box Girder Webs[D].University of Texas at Austin,1991
[51]谌润水,胡钊芳.公路桥梁荷载试验[M].北京:民交通出版社,2003
[52]Yang Y B,Kuo S R,Chherng Y D.Curved beam elements for nonlinear analysis[J].Eng.Mech.,1989115(4):840-855
[53]许强.薄壁曲梁线弹性理论和弹塑性稳定极限承载力分析[D].杭州:浙江大学,2002