钢桁加劲梁悬索桥施工监控研究
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摘要
哪吒大桥是河南省援助四川省江油市地震灾后重建项目的第三批实施工程所建桥梁,大桥为双塔单跨悬索桥,加劲梁采用钢桁梁,桥址位于江油市乾元山风景区,是连通四川省道S302和乾元山方向的重要桥梁。本文结合哪吒大桥现场实际施工情况,对哪吒大桥进行了施工监控研究。主要做了以下工作：
1.利用有限元软件Midas/Civil建立哪吒大桥施工全过程计算模型,根据桥梁现场实际的材料特性、施工误差及边界约束情况对计算模型进行修正,在此基础上对哪吒大桥施工全过程进行分析,为哪吒大桥施工监控提供理论指导。
2.制定哪吒大桥施工监控方案,指导了哪吒大桥的施工监控。
3.对哪吒大桥主塔进行全过程跟踪监测与控制,对主塔的施工进行预报；分析主塔成塔时的稳定性,得到主塔在裸塔时的初始状态,为后期主缆架设、钢桁加劲梁架设及主索鞍顶推施工等工作提供方便。
4.对影响主缆架设施工的因素进行了系统分析,得出了主缆无应力索长变化、温度变化、跨径变化和预抬高量等施工因素对主缆跨中标高的影响关系,指导了哪吒大桥的主缆架设施工。
5.对钢桁加劲梁架设方案进行了研究,论证了哪吒大桥钢桁加劲梁施工采用缆索吊装方案进行施工的合理性,分析了该方案对哪吒大桥结构受力的影响。对钢桁加劲梁施工中节段连接方式进行了分析,得出了哪吒大桥钢桁加劲梁施工应采用刚铰混合的连接方式施工,给出了适合哪吒大桥施工的设铰方案。对钢桁加劲梁架设的跨中合龙方案进行了探讨,得出了哪吒大桥应采用跨中位置压重方式施工的结论,分析了温度对钢桁加劲梁合龙施工的影响,为哪吒大桥施工提供指导。
6.对哪吒大桥主索鞍顶推施工进行了全程监测及预报,科学合理地确定了顶推时机及顶推量,为钢桁加劲梁架设及二期铺装施工提供了安全保障。
本论文研究得到河南省杰出人才项目“桥梁健康监测与损伤诊断的整体方法研究”(项目编号：084200510003)的资助。
NaZha Bridge is the third group implementation project that Henan Province aids Jiangyou City, Sichuan Province after earthquake, designed as a double twins single span suspension bridge with steel truss stiffening girder, exemplified in Qian Yuan mountain scenic spot of Jiangyou City, and is the important bridge in connecting Sichuan provincial highway S302 and the direction of Qian Yuan mountain. Based on the actual construction circumstance of NaZha bridge, the paper mainly studies the construction monitoring of NaZha bridge. The main jobs as follow:
1. Establish the whole construction process calculation models of NaZha bridge by the finite element software "Midas/Civil", revise these models according to the material properties used actually in bridge、construction error and boundary constraint conditions, analyse the whole construction of NaZha bridge on the basis of the models, and provide theoretical guidance for construction monitoring of NaZha bridge.
2. Formulate the construction monitoring -scheme for NaZha bridge and guide the construction monitoring of NaZha bridge.
3. Though follow-up monitoring and controlling the main towers construction of NaZha bridge, forecast the following construction of the main towers;Analyse the stability of the builded main towers, get the initial condition of the main tower in naked tower stage, and provide convenience for the following constructions of main cable erection steel truss stiffening girder erection and the main cable saddle pushing construction。
4. Systematically analyse the construction affecting factors for main cable erection, make out the impact relationship between the midspan win of the main cable and the factors which include the length change of the main cable without stress、temperature changes、span changes、the value of pre-taking up and so on, and guide the main cable erection of NaZha bridge.
5. Study on erection methods of steel truss stiffening girder, demonstrate that using cable hoisting method for steel truss stiffening girder erection is rational, and analyze the erection method's influence to the structure stress of NaZha bridge. Study on connection styles during the construction of steel truss stiffening girder, get out that the erection of steel truss stiffening girder of NaZha bridge should adopt the hinge and rigid hybrid connection, and make out the setting hinge scheme which is suitable for the construction of NaZha bridge. Study on closure methods of steel truss stiffening girder, conclude that NaZha bridge should adopt the loading construction method in midspan for the close construction of steel truss stiffening girder, and though analysing the temperature's influence to the closure construction of steel truss stiffening girder of NaZha bridge, guide the construction of the bridge.
6. Though the whole process monitoring and predicting for the main cable saddle pushing construction of NaZha bridge, determine the pushing time and the pushing quantity scientifically and reasonably, and provide security for steel truss stiffening girder erection and bridge deck pavement construction.
This thesis research gets funding from the project"The overall scheme research on bridge health monitoring and damage diagnosis" of outstanding talents projects of Henan province(-the project Numbers:084200510003).
1.利用有限元软件Midas/Civil建立哪吒大桥施工全过程计算模型,根据桥梁现场实际的材料特性、施工误差及边界约束情况对计算模型进行修正,在此基础上对哪吒大桥施工全过程进行分析,为哪吒大桥施工监控提供理论指导。
2.制定哪吒大桥施工监控方案,指导了哪吒大桥的施工监控。
3.对哪吒大桥主塔进行全过程跟踪监测与控制,对主塔的施工进行预报；分析主塔成塔时的稳定性,得到主塔在裸塔时的初始状态,为后期主缆架设、钢桁加劲梁架设及主索鞍顶推施工等工作提供方便。
4.对影响主缆架设施工的因素进行了系统分析,得出了主缆无应力索长变化、温度变化、跨径变化和预抬高量等施工因素对主缆跨中标高的影响关系,指导了哪吒大桥的主缆架设施工。
5.对钢桁加劲梁架设方案进行了研究,论证了哪吒大桥钢桁加劲梁施工采用缆索吊装方案进行施工的合理性,分析了该方案对哪吒大桥结构受力的影响。对钢桁加劲梁施工中节段连接方式进行了分析,得出了哪吒大桥钢桁加劲梁施工应采用刚铰混合的连接方式施工,给出了适合哪吒大桥施工的设铰方案。对钢桁加劲梁架设的跨中合龙方案进行了探讨,得出了哪吒大桥应采用跨中位置压重方式施工的结论,分析了温度对钢桁加劲梁合龙施工的影响,为哪吒大桥施工提供指导。
6.对哪吒大桥主索鞍顶推施工进行了全程监测及预报,科学合理地确定了顶推时机及顶推量,为钢桁加劲梁架设及二期铺装施工提供了安全保障。
本论文研究得到河南省杰出人才项目“桥梁健康监测与损伤诊断的整体方法研究”(项目编号：084200510003)的资助。
NaZha Bridge is the third group implementation project that Henan Province aids Jiangyou City, Sichuan Province after earthquake, designed as a double twins single span suspension bridge with steel truss stiffening girder, exemplified in Qian Yuan mountain scenic spot of Jiangyou City, and is the important bridge in connecting Sichuan provincial highway S302 and the direction of Qian Yuan mountain. Based on the actual construction circumstance of NaZha bridge, the paper mainly studies the construction monitoring of NaZha bridge. The main jobs as follow:
1. Establish the whole construction process calculation models of NaZha bridge by the finite element software "Midas/Civil", revise these models according to the material properties used actually in bridge、construction error and boundary constraint conditions, analyse the whole construction of NaZha bridge on the basis of the models, and provide theoretical guidance for construction monitoring of NaZha bridge.
2. Formulate the construction monitoring -scheme for NaZha bridge and guide the construction monitoring of NaZha bridge.
3. Though follow-up monitoring and controlling the main towers construction of NaZha bridge, forecast the following construction of the main towers;Analyse the stability of the builded main towers, get the initial condition of the main tower in naked tower stage, and provide convenience for the following constructions of main cable erection steel truss stiffening girder erection and the main cable saddle pushing construction。
4. Systematically analyse the construction affecting factors for main cable erection, make out the impact relationship between the midspan win of the main cable and the factors which include the length change of the main cable without stress、temperature changes、span changes、the value of pre-taking up and so on, and guide the main cable erection of NaZha bridge.
5. Study on erection methods of steel truss stiffening girder, demonstrate that using cable hoisting method for steel truss stiffening girder erection is rational, and analyze the erection method's influence to the structure stress of NaZha bridge. Study on connection styles during the construction of steel truss stiffening girder, get out that the erection of steel truss stiffening girder of NaZha bridge should adopt the hinge and rigid hybrid connection, and make out the setting hinge scheme which is suitable for the construction of NaZha bridge. Study on closure methods of steel truss stiffening girder, conclude that NaZha bridge should adopt the loading construction method in midspan for the close construction of steel truss stiffening girder, and though analysing the temperature's influence to the closure construction of steel truss stiffening girder of NaZha bridge, guide the construction of the bridge.
6. Though the whole process monitoring and predicting for the main cable saddle pushing construction of NaZha bridge, determine the pushing time and the pushing quantity scientifically and reasonably, and provide security for steel truss stiffening girder erection and bridge deck pavement construction.
This thesis research gets funding from the project"The overall scheme research on bridge health monitoring and damage diagnosis" of outstanding talents projects of Henan province(-the project Numbers:084200510003).
引文
[1]周昌栋,谭永高,宋官保.悬索桥上部结构施工[M].北京：人民交通出版社.2004
[2]雷俊卿,郑明珠,徐恭义.悬索桥设计[M].北京：人民交通出版社,2002
[3]周孟波.悬索桥设计手册[M].北京：人民交通出版社,2003
[4]徐君兰.大跨桥梁施工监控[M].北京：人民交通出版社,2000
[5]孙胜江.悬索桥钢箱梁吊装施工监控研究[D].西安：长安大学硕士学位论文,2001
[6]Karoumi Raid. Some modeling aspects in the nonlinear finite element analysis of cable supported bridges [J]. Computers and Structures,1999,71(4):397-412
[6]Bocciolone M,Cheli F, Curami, et al. Wind measurements on the Humber bridge and numerical simulations[J]. Journal of Wind Engineering and Industrial Aerodynamics,1992, 42(1-3):1393-1404
[8]Karuna R, Yao M S, Brown C J, et al. Modelling and analysis of the Humber Bridge[J]. Journal of the International Association for Shell and Spatial Structures,1998,39(127):117-122
[9]Al-Qarra H. Dee Estuary Bridge-control of geometry during construction[J]. Proceedings of the Institution of Civil Engineers,1999,132(1):31-39
[10]Dameron R A, Dunham R S, Castro J C. Nonlinear analysis and experimental validation of a stiffening truss chord of the golden gate bridge[J]. Computing in Civil Engineering,1994,(2): 1106-1114
[11]Larose G L. Monitoring the dynamic behaviour of bridges during construction[J]. Proceedings of the International Modal Analysis Conference,2001,(1):511-517
[12]曹洪武.钢桁架悬索北盘江大桥结构特性研究[D].上海：同济大学硕士学位论文,2007
[13]蒋望.钢桁加劲梁悬索桥施工与成桥阶段仿真计算分析[D].长沙：长沙理工：大学硕十学位论文,2008
[14]门永斌.桁架加劲梁悬索桥悬臂架设过程分析及稳定性研究[D].成都：西南交通大学硕士学位论文,2008
[15]卫星,刘高,李俊,等.大跨钢桁加劲梁悬索桥耳板节点实验研究[J].桥梁建设,2009,(1)：15-18
[16]王雷刚.悬索桥钢桁加劲梁吊装施工监控研究[D].西安：长安大学硕士学位论文,2009
[17]王蒂.悬索桥施工监控理论及软件研究[D].西安：长安大学硕士学位论文,2002
[18]徐汉铮.大跨径悬索桥施工监控系统研究[D].西安：长安大学,2005
[19]何为.大跨径悬索桥施工监控中若干问题的研究[D].杭州：浙江大学,2006
[20]姜军,忻刚明,孙胜江.大跨悬索桥加劲梁吊装阶段的施工控制[J].公路,2009,(12)：35-38
[21]潘韬.大跨径悬索桥主缆成桥线形分析[D].武汉：武汉理工大学,2006
[22]门永斌,沈锐利,唐茂林.悬索桥索塔施工过程的模拟分析[J].湖南工程学院学报,2007,17(2)：88-91
[23]叶志龙.悬索桥主缆架设误差影响分析及参数控制[D].成都：西南交通大学硕士学位论文,2005
[24]唐茂林.大跨度悬索桥空间几何非线性分析与软件开发[D].成都：西南交通大学,2003
[25]Xia Yong, Chen Bo. Xu You-lin. Temperature monitoring of Tsing Ma Suspension Bridge: Numerical simulation and field measurement[J]. Proceedings of the 12th International Conference on Engineering, Science. Construction, and Operations in Challenging Environments-Earth and Space 2010,2010:2535-2542
[26]Bosch Harold R. Monitoring the aerodynamic performance of a classic suspension bridge [J]. NIST Special Publication,1990,(796):24-32
[27]Moqensen Bo. Integrated monitoring and modelling system [J]. Bulletin of the Permanent International Association of Navigation Congresses,1991,(72):101-107
[28]Stephen G A, Brwonjohn J M W, Taylor C A. Measurements of static and dynamic displacement from visual monitoring of the Humber Bridge[J]. Engineering Structures,1993. 15(3):197-208
[29]Wong K Y, Lau C K, Flint A R. Planning and implementation of the structural health monitoring system for cable-supported bridges in Hong Kong[J]. Proceedings of SPIE-The International Society for Optical Engineering,2000,(3995):266-275
[30]Abe Masato. Fujino Yozo, Yanagihara Masato, et al. Monitoring of Hakucho Suspension Bridge by ambient vibration measurement [J]. Proceedings of SPIE-The International Society for Optical Engineering,2000,(3995):237-244
[31]Pakzad Shamim N, Fenves Gregory. Statistical analysis of vibration modes of a suspension bridge using spatially dense wireless sensor network [J]. Journal of Structural Engineering.2009. 135(7):863-872
[32]Nayeri Reza D, Tasbihgoo Farzad. Wahbeh Mazen. et al. Study of time-domain techniques for modal parameter identification of a long suspension bridge with dense sensor arrays [J]. Journal of Engineering Mechanics,2009,135(7):669-683
[33]梅葵花.悬索桥主缆施工监控的研究[D].西安：长安大学硕十学位论文,2000
[34]蒋国富.大跨径桥梁高墩日照温度效应的研究[D].西安：长安大学,2008
[35]白剑.悬索桥施工过程温度场测试及温度效应分析[D].西安：长安大学硕士学位论文,2004
[36]曾胜欢.大跨度悬索桥混凝土索塔的施工控制及非荷载效应分析[D].西安：长安大学硕士学位论文,2008
[37]中华人民共和国交通部.JTJ 041-2000公路桥涵施工技术规范(S).北京：人民交通出版社,2000
[38]刘高,彭运动,周平,等.坝陵河大桥钢桁加劲梁施工架设方案研究[J].公路交通科技,2009,26(5)：80-85、90
[39]旷斌,凌桂香.坝陵河大桥施工技术阶段总结[J].中国科技信息,2006,(20)：54-57
[40]王忠彬,沈锐利,唐茂林.悬索桥钢桁架加劲梁施工方法分析[J].石家庄铁道学院学报,2006,19(1)：117-121
[41]刘小飞.北盘江大桥悬索桥钢桁加劲梁施工技术[J].贵州工业大学学报(自然科学版),2008,37(3)：184-187
[42]张平,李靖华,上官兴.山区悬索桥钢桁主梁施工研究[J].中外公路,2009,29(1)：135-139
[43]王碧波,易伦雄.镇胜公路北盘江大桥钢桁梁架设方案研究[J].桥梁建设,2009,(3)：48-50
[44]姜华,魏群,彭运动.坝陵河大型悬索桥钢桁加劲梁安装施工新技术[J].华北水利水电学院学报,2010,31(1)：37-40
[45]门永斌,沈锐利,唐茂林.大跨度悬索桥加劲梁悬臂架设施工分析[C].第十八届全国桥梁学术会议论文集(上册),北京：人民交通出版社,2008年：543-549
[46]魏建东,刘忠玉.悬索桥结构分析中索鞍的精确模拟[J].工程力学,2006,23(7)114-118
[47]McDonald Brain M, Peyrot Alain H.Analysis of cables suspended in sheaves[J].Journal of Structural Engineering, ASCE.1988.114(3):693-706
[48]罗喜恒,肖汝诚,项海帆.用于悬索桥非线性分析的鞍座-索单元[J].土木工程学报,2005,38(6)：47-53
[49]孙胜红,姜军.悬索桥索塔容许偏位及主索鞍顶推分析[J].公路,2007,(10)：54-57
[50]李景丰,蔡泳.独塔混凝土斜拉桥边跨合龙段施工方案优化[J].中外公路,2009,29(4)：125-128
[51]陈洪彬,陈群,王斐,等.大跨度连续刚构桥合龙顶推效应分析及方案研究[J].公路,2009,(7)：209-211
[52]孙吉飚.朝天门长江大桥钢桁拱合龙技术[J].现代交通技术,2007,4(2)：46-48
[53]杨国海.坝陵河大桥钢桁加劲梁跨中合龙技术[C].全国桥梁学术会议论文集,北京：人民交通出版社,2009：246-250
[54]林洽,彭运动,沈锐利,等.大跨度钢桁梁悬索桥悬臂架设的合龙方案研究[C].全国桥梁学术会议论文集,北京：人民交通出版社,2009：250-255
[2]雷俊卿,郑明珠,徐恭义.悬索桥设计[M].北京：人民交通出版社,2002
[3]周孟波.悬索桥设计手册[M].北京：人民交通出版社,2003
[4]徐君兰.大跨桥梁施工监控[M].北京：人民交通出版社,2000
[5]孙胜江.悬索桥钢箱梁吊装施工监控研究[D].西安：长安大学硕士学位论文,2001
[6]Karoumi Raid. Some modeling aspects in the nonlinear finite element analysis of cable supported bridges [J]. Computers and Structures,1999,71(4):397-412
[6]Bocciolone M,Cheli F, Curami, et al. Wind measurements on the Humber bridge and numerical simulations[J]. Journal of Wind Engineering and Industrial Aerodynamics,1992, 42(1-3):1393-1404
[8]Karuna R, Yao M S, Brown C J, et al. Modelling and analysis of the Humber Bridge[J]. Journal of the International Association for Shell and Spatial Structures,1998,39(127):117-122
[9]Al-Qarra H. Dee Estuary Bridge-control of geometry during construction[J]. Proceedings of the Institution of Civil Engineers,1999,132(1):31-39
[10]Dameron R A, Dunham R S, Castro J C. Nonlinear analysis and experimental validation of a stiffening truss chord of the golden gate bridge[J]. Computing in Civil Engineering,1994,(2): 1106-1114
[11]Larose G L. Monitoring the dynamic behaviour of bridges during construction[J]. Proceedings of the International Modal Analysis Conference,2001,(1):511-517
[12]曹洪武.钢桁架悬索北盘江大桥结构特性研究[D].上海：同济大学硕士学位论文,2007
[13]蒋望.钢桁加劲梁悬索桥施工与成桥阶段仿真计算分析[D].长沙：长沙理工：大学硕十学位论文,2008
[14]门永斌.桁架加劲梁悬索桥悬臂架设过程分析及稳定性研究[D].成都：西南交通大学硕士学位论文,2008
[15]卫星,刘高,李俊,等.大跨钢桁加劲梁悬索桥耳板节点实验研究[J].桥梁建设,2009,(1)：15-18
[16]王雷刚.悬索桥钢桁加劲梁吊装施工监控研究[D].西安：长安大学硕士学位论文,2009
[17]王蒂.悬索桥施工监控理论及软件研究[D].西安：长安大学硕士学位论文,2002
[18]徐汉铮.大跨径悬索桥施工监控系统研究[D].西安：长安大学,2005
[19]何为.大跨径悬索桥施工监控中若干问题的研究[D].杭州：浙江大学,2006
[20]姜军,忻刚明,孙胜江.大跨悬索桥加劲梁吊装阶段的施工控制[J].公路,2009,(12)：35-38
[21]潘韬.大跨径悬索桥主缆成桥线形分析[D].武汉：武汉理工大学,2006
[22]门永斌,沈锐利,唐茂林.悬索桥索塔施工过程的模拟分析[J].湖南工程学院学报,2007,17(2)：88-91
[23]叶志龙.悬索桥主缆架设误差影响分析及参数控制[D].成都：西南交通大学硕士学位论文,2005
[24]唐茂林.大跨度悬索桥空间几何非线性分析与软件开发[D].成都：西南交通大学,2003
[25]Xia Yong, Chen Bo. Xu You-lin. Temperature monitoring of Tsing Ma Suspension Bridge: Numerical simulation and field measurement[J]. Proceedings of the 12th International Conference on Engineering, Science. Construction, and Operations in Challenging Environments-Earth and Space 2010,2010:2535-2542
[26]Bosch Harold R. Monitoring the aerodynamic performance of a classic suspension bridge [J]. NIST Special Publication,1990,(796):24-32
[27]Moqensen Bo. Integrated monitoring and modelling system [J]. Bulletin of the Permanent International Association of Navigation Congresses,1991,(72):101-107
[28]Stephen G A, Brwonjohn J M W, Taylor C A. Measurements of static and dynamic displacement from visual monitoring of the Humber Bridge[J]. Engineering Structures,1993. 15(3):197-208
[29]Wong K Y, Lau C K, Flint A R. Planning and implementation of the structural health monitoring system for cable-supported bridges in Hong Kong[J]. Proceedings of SPIE-The International Society for Optical Engineering,2000,(3995):266-275
[30]Abe Masato. Fujino Yozo, Yanagihara Masato, et al. Monitoring of Hakucho Suspension Bridge by ambient vibration measurement [J]. Proceedings of SPIE-The International Society for Optical Engineering,2000,(3995):237-244
[31]Pakzad Shamim N, Fenves Gregory. Statistical analysis of vibration modes of a suspension bridge using spatially dense wireless sensor network [J]. Journal of Structural Engineering.2009. 135(7):863-872
[32]Nayeri Reza D, Tasbihgoo Farzad. Wahbeh Mazen. et al. Study of time-domain techniques for modal parameter identification of a long suspension bridge with dense sensor arrays [J]. Journal of Engineering Mechanics,2009,135(7):669-683
[33]梅葵花.悬索桥主缆施工监控的研究[D].西安：长安大学硕十学位论文,2000
[34]蒋国富.大跨径桥梁高墩日照温度效应的研究[D].西安：长安大学,2008
[35]白剑.悬索桥施工过程温度场测试及温度效应分析[D].西安：长安大学硕士学位论文,2004
[36]曾胜欢.大跨度悬索桥混凝土索塔的施工控制及非荷载效应分析[D].西安：长安大学硕士学位论文,2008
[37]中华人民共和国交通部.JTJ 041-2000公路桥涵施工技术规范(S).北京：人民交通出版社,2000
[38]刘高,彭运动,周平,等.坝陵河大桥钢桁加劲梁施工架设方案研究[J].公路交通科技,2009,26(5)：80-85、90
[39]旷斌,凌桂香.坝陵河大桥施工技术阶段总结[J].中国科技信息,2006,(20)：54-57
[40]王忠彬,沈锐利,唐茂林.悬索桥钢桁架加劲梁施工方法分析[J].石家庄铁道学院学报,2006,19(1)：117-121
[41]刘小飞.北盘江大桥悬索桥钢桁加劲梁施工技术[J].贵州工业大学学报(自然科学版),2008,37(3)：184-187
[42]张平,李靖华,上官兴.山区悬索桥钢桁主梁施工研究[J].中外公路,2009,29(1)：135-139
[43]王碧波,易伦雄.镇胜公路北盘江大桥钢桁梁架设方案研究[J].桥梁建设,2009,(3)：48-50
[44]姜华,魏群,彭运动.坝陵河大型悬索桥钢桁加劲梁安装施工新技术[J].华北水利水电学院学报,2010,31(1)：37-40
[45]门永斌,沈锐利,唐茂林.大跨度悬索桥加劲梁悬臂架设施工分析[C].第十八届全国桥梁学术会议论文集(上册),北京：人民交通出版社,2008年：543-549
[46]魏建东,刘忠玉.悬索桥结构分析中索鞍的精确模拟[J].工程力学,2006,23(7)114-118
[47]McDonald Brain M, Peyrot Alain H.Analysis of cables suspended in sheaves[J].Journal of Structural Engineering, ASCE.1988.114(3):693-706
[48]罗喜恒,肖汝诚,项海帆.用于悬索桥非线性分析的鞍座-索单元[J].土木工程学报,2005,38(6)：47-53
[49]孙胜红,姜军.悬索桥索塔容许偏位及主索鞍顶推分析[J].公路,2007,(10)：54-57
[50]李景丰,蔡泳.独塔混凝土斜拉桥边跨合龙段施工方案优化[J].中外公路,2009,29(4)：125-128
[51]陈洪彬,陈群,王斐,等.大跨度连续刚构桥合龙顶推效应分析及方案研究[J].公路,2009,(7)：209-211
[52]孙吉飚.朝天门长江大桥钢桁拱合龙技术[J].现代交通技术,2007,4(2)：46-48
[53]杨国海.坝陵河大桥钢桁加劲梁跨中合龙技术[C].全国桥梁学术会议论文集,北京：人民交通出版社,2009：246-250
[54]林洽,彭运动,沈锐利,等.大跨度钢桁梁悬索桥悬臂架设的合龙方案研究[C].全国桥梁学术会议论文集,北京：人民交通出版社,2009：250-255
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