组合桥面系杆拱桥力学与经济性能研究
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摘要
为明确大跨度组合桥面系杆拱桥的力学与经济性能,针对主跨200m的桥梁,进行3种系杆拱桥方案(组合桥面、竖直吊杆;正交异性钢桥面、竖直吊杆;组合桥面、网状吊杆)的试设计研究。采用TDV RM Bridge有限元程序建立3种试设计方案模型,对比3种方案的静力强度和稳定性等力学性能;统计各方案材料用量,引入材料指标,对比3种方案的经济性能。结果表明:对于主跨200m的系杆拱桥,组合桥面与正交异性钢桥面相比更能展现出良好的技术与经济竞争力;采用网状吊杆,可显著提高系杆拱桥的结构刚度、减小拱肋和系梁的活载弯矩、节省材料用量,但应重视吊杆的疲劳问题。
In order to explore the mechanical and economic performance of tied-arch bridges with composite deck,we performed the trial design of three schemes(namely,composite deck and vertical hangers,orthotropic steel deck and vertical hangers,and composite deck and network hangers)of 200 mmain span tied-arch bridges.Meanwhile,we adopted the TDV RM Bridge finite element software to establish models of three trial design schemes,and compared the mechanical performances,such as structural static strength and static stability,of three schemes.Moreover,we compared the economic performances of three schemes by counting the total quantities and introducing the material indexes.The results show that the 200 mspan tied-arch bridge with composite deck exhibits a better technical and economic competitiveness than that with orthotropic steel deck.The adoption of network hangers can significantly increase the structural stiffness,decrease the live-load moment of arch rib and tied beam,and save the total cost of bridge,whereas,the fatigue properties of the inclined hangers should be paid particular attention to.
In order to explore the mechanical and economic performance of tied-arch bridges with composite deck,we performed the trial design of three schemes(namely,composite deck and vertical hangers,orthotropic steel deck and vertical hangers,and composite deck and network hangers)of 200 mmain span tied-arch bridges.Meanwhile,we adopted the TDV RM Bridge finite element software to establish models of three trial design schemes,and compared the mechanical performances,such as structural static strength and static stability,of three schemes.Moreover,we compared the economic performances of three schemes by counting the total quantities and introducing the material indexes.The results show that the 200 mspan tied-arch bridge with composite deck exhibits a better technical and economic competitiveness than that with orthotropic steel deck.The adoption of network hangers can significantly increase the structural stiffness,decrease the live-load moment of arch rib and tied beam,and save the total cost of bridge,whereas,the fatigue properties of the inclined hangers should be paid particular attention to.
引文
[1]肖汝诚.桥梁结构体系[M].北京:人民交通出版社,2013.(XIAO Ru-cheng.Bridge Structural Systems[M].Beijing:China Communications Press,2013.in Chinese)
[2]詹建辉,彭晓彬.大跨度组合梁斜拉桥结构设计方案研究[J].桥梁建设,2016,46(4):85-91.(ZHAN Jian-hui,PENG Xiao-bin.Study of Structural Design Scheme for Long Span Composite Girder CableStayed Bridge[J].Bridge Construction,2016,46(4):85-91.in Chinese)
[3]孙海涛,张德明,邵长宇.银川滨河黄河大桥主桥设计[J].桥梁建设,2017,47(5):95-100.(SUN Hai-tao,ZHANG De-ming,SHAO Chang-yu.Design of Main Bridge of Binhe Huanghe River Bridge in Yinchuan[J].Bridge Construction,2017,47(5):95-100.in Chinese)
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[6]Friot D,Bellier G E.Bonpas Tied-Arch TGVMéditerranée High-Speed Rail Bridge over the A7Motorway Toll Plaza[C]//Proceedings of the 3rd International Meeting Composite Bridges.Madrid:Spanish Society of Civil Engineers,2001:745-757.
[7]邵长宇.索承式组合结构桥梁[M].北京:人民交通出版社股份有限公司,2017.(SHAO Chang-yu.Cable Supported Composite Bridges[M].Beijing:China Communications Press Co.,Ltd.,2017.in Chinese)
[8]周德,叶梅新,欧丽.高速铁路大跨度下承式结合梁系杆拱桥桥面结合方式研究[J].武汉理工大学学报(交通科学与工程版),2010,34(1):52-56.(ZHOU De,YE Mei-xin,OU Li.Study on Composite Deck Structure of Large Span Through Tied-Arch Bridge on High-Speed Railway[J].Journal of Wuhan University of Technology(Transportation Science&Engineering),2010,34(1):52-56.in Chinese)
[9]邵长宇.组合结构桥梁的发展与应用前景[J].城市道桥与防洪,2016(9):11-15.(SHAO Chang-yu.Development and Application Prospect of Combined Structural Bridge[J].Urban Roads,Bridges&Flood Control,2016(9):11-15.in Chinese)
[10]EN 1994-2:2005,Eurocode 4-Design of Composite Steel and Concrete Structures-Part 2:General Rules and Rules for Bridges[S].
[11]邵长宇,陈亮,汤虎.大跨径组合梁斜拉桥试设计及力学性能研究[J].桥梁建设,2017,47(4):101-106.(SHAO Chang-yu,CHEN Liang,TANG Hu.Study on Trial Design and Mechanical Performance of Long Span Composite Girder Cable-Stayed Bridges[J].Bridge Construction,2017,47(4):101-106.in Chinese)
[12]陈亮,邵长宇,汤虎.大跨径组合梁斜拉桥经济性能研究[J].世界桥梁,2017,45(5):39-43.(CHEN Liang,SHAO Chang-yu,TANG Hu.Study of Economic Performance of Long-Span Composite Girder Cable-Stayed Bridge[J].World Bridges,2017,45(5):39-43.in Chinese)
[2]詹建辉,彭晓彬.大跨度组合梁斜拉桥结构设计方案研究[J].桥梁建设,2016,46(4):85-91.(ZHAN Jian-hui,PENG Xiao-bin.Study of Structural Design Scheme for Long Span Composite Girder CableStayed Bridge[J].Bridge Construction,2016,46(4):85-91.in Chinese)
[3]孙海涛,张德明,邵长宇.银川滨河黄河大桥主桥设计[J].桥梁建设,2017,47(5):95-100.(SUN Hai-tao,ZHANG De-ming,SHAO Chang-yu.Design of Main Bridge of Binhe Huanghe River Bridge in Yinchuan[J].Bridge Construction,2017,47(5):95-100.in Chinese)
[4]Saul R.Bridges with Double Composite Action[J].Structural Engineering International,1996,6(1):32-36.
[5]Hanswille G.Composite Bridges Recently Built in Germany[C]//Proceedings of the 3rd International Meeting.Madrid:Spanish Society of Civil Engineers,2001:95-110.
[6]Friot D,Bellier G E.Bonpas Tied-Arch TGVMéditerranée High-Speed Rail Bridge over the A7Motorway Toll Plaza[C]//Proceedings of the 3rd International Meeting Composite Bridges.Madrid:Spanish Society of Civil Engineers,2001:745-757.
[7]邵长宇.索承式组合结构桥梁[M].北京:人民交通出版社股份有限公司,2017.(SHAO Chang-yu.Cable Supported Composite Bridges[M].Beijing:China Communications Press Co.,Ltd.,2017.in Chinese)
[8]周德,叶梅新,欧丽.高速铁路大跨度下承式结合梁系杆拱桥桥面结合方式研究[J].武汉理工大学学报(交通科学与工程版),2010,34(1):52-56.(ZHOU De,YE Mei-xin,OU Li.Study on Composite Deck Structure of Large Span Through Tied-Arch Bridge on High-Speed Railway[J].Journal of Wuhan University of Technology(Transportation Science&Engineering),2010,34(1):52-56.in Chinese)
[9]邵长宇.组合结构桥梁的发展与应用前景[J].城市道桥与防洪,2016(9):11-15.(SHAO Chang-yu.Development and Application Prospect of Combined Structural Bridge[J].Urban Roads,Bridges&Flood Control,2016(9):11-15.in Chinese)
[10]EN 1994-2:2005,Eurocode 4-Design of Composite Steel and Concrete Structures-Part 2:General Rules and Rules for Bridges[S].
[11]邵长宇,陈亮,汤虎.大跨径组合梁斜拉桥试设计及力学性能研究[J].桥梁建设,2017,47(4):101-106.(SHAO Chang-yu,CHEN Liang,TANG Hu.Study on Trial Design and Mechanical Performance of Long Span Composite Girder Cable-Stayed Bridges[J].Bridge Construction,2017,47(4):101-106.in Chinese)
[12]陈亮,邵长宇,汤虎.大跨径组合梁斜拉桥经济性能研究[J].世界桥梁,2017,45(5):39-43.(CHEN Liang,SHAO Chang-yu,TANG Hu.Study of Economic Performance of Long-Span Composite Girder Cable-Stayed Bridge[J].World Bridges,2017,45(5):39-43.in Chinese)