Design of Main Bridge Deck System of DaoQingzhou River Crossing Passage in Fuzhou
王帆1, 马铮2, 蔡銮1
1. China Railway Major Bridge Reconnaissance & Design Institute Co., Ltd., Wuhan Hubei 430056, China; 2. Wuhan Technical College of Communications, Wuhan Hubei 430065, China
Design of Main Bridge Deck System of DaoQingzhou River Crossing Passage in Fuzhou
WANG Fan1, MA Zheng2, CAI Luan1
1. China Railway Major Bridge Reconnaissance & Design Institute Co., Ltd., Wuhan Hubei 430056, China; 2. Wuhan Technical College of Communications, Wuhan Hubei 430065, China
摘要The main bridge of the Daoqingzhou river crossing adopts a double-layer variable-height prestressed steel truss composite girder scheme. The web members are triangular trusses. The main span is 276 m, the standard truss height is 9.5 m, and the truss height near the fulcrum is increased from 9.5 m to 23.0 m. This bridge is a dual-purpose bridge for road and rail. Its biggest structure features: larger span, lower truss height, and heavier load. In order to share part of the main truss force, the upper road deck of the main bridge of Daoqingzhou cross-river passage adopts steel dense beams + concrete slabs which are combined with the beam system. The concrete slab and the steel beam are connected by shear nails. The prestress of the concrete slab is anchored on the steel beam; The lower track bridge deck adopts the integral bridge deck system of longitudinal and transverse beams + orthotropic slabs. The partial weighted section adopts a box structure, and the interior is filled with iron sand concrete for weight. In the position of truss height change, the advantages and disadvantages of two kinds of bridge deck systems, flat chord and no flat chord, are compared. At the same time, in order to meet the architectural appearance requirements of the triangular truss structure, the lower rail bridge deck adopts an innovative form of bridge deck structure at the variable height position, and it is the point-supported integral bridge deck system. The side longitudinal beams and box shaped crossbeams are set on the bridge deck system. A stable plane frame formed by side longitudinal beams and box shaped crossbeams, And through vertical supports, the rail deck system is supported on the corbels extended by the inclined web rods, and the structure is clearly stressed. In the aspect of force, a detailed structrucal calculation for the upper deck and the lower deck of the standard section is made. The calculation results show that the structural stiffness and stress are within the requirements of the specification. The more prominent torsion problem of the crossbeam is analyzed in-depth, and transverse bridge frame model and local finite element model are built for structural safety verification. In addition, for the position of Corbel force transmission, fine structural finite element calculation is carried out. Then the stress state of each component plate in this part is analyzed to ensure the safety of the structure.
Abstract：The main bridge of the Daoqingzhou river crossing adopts a double-layer variable-height prestressed steel truss composite girder scheme. The web members are triangular trusses. The main span is 276 m, the standard truss height is 9.5 m, and the truss height near the fulcrum is increased from 9.5 m to 23.0 m. This bridge is a dual-purpose bridge for road and rail. Its biggest structure features: larger span, lower truss height, and heavier load. In order to share part of the main truss force, the upper road deck of the main bridge of Daoqingzhou cross-river passage adopts steel dense beams + concrete slabs which are combined with the beam system. The concrete slab and the steel beam are connected by shear nails. The prestress of the concrete slab is anchored on the steel beam; The lower track bridge deck adopts the integral bridge deck system of longitudinal and transverse beams + orthotropic slabs. The partial weighted section adopts a box structure, and the interior is filled with iron sand concrete for weight. In the position of truss height change, the advantages and disadvantages of two kinds of bridge deck systems, flat chord and no flat chord, are compared. At the same time, in order to meet the architectural appearance requirements of the triangular truss structure, the lower rail bridge deck adopts an innovative form of bridge deck structure at the variable height position, and it is the point-supported integral bridge deck system. The side longitudinal beams and box shaped crossbeams are set on the bridge deck system. A stable plane frame formed by side longitudinal beams and box shaped crossbeams, And through vertical supports, the rail deck system is supported on the corbels extended by the inclined web rods, and the structure is clearly stressed. In the aspect of force, a detailed structrucal calculation for the upper deck and the lower deck of the standard section is made. The calculation results show that the structural stiffness and stress are within the requirements of the specification. The more prominent torsion problem of the crossbeam is analyzed in-depth, and transverse bridge frame model and local finite element model are built for structural safety verification. In addition, for the position of Corbel force transmission, fine structural finite element calculation is carried out. Then the stress state of each component plate in this part is analyzed to ensure the safety of the structure.
王帆, 马铮, 蔡銮. Design of Main Bridge Deck System of DaoQingzhou River Crossing Passage in Fuzhou[J]. Journal of Highway and Transportation Research and Development, 2023, 17(3): 16-25.
WANG Fan, MA Zheng, CAI Luan. Design of Main Bridge Deck System of DaoQingzhou River Crossing Passage in Fuzhou. Journal of Highway and Transportation Research and Development, 2023, 17(3): 16-25.
[1] China Railway Major Bridge Reconnaissance&Design Institute Co., Ltd, Construction Drawing Design of Daoqingzhou Bridge and Connection Project in Fuzhou City[Z].Wu Han,2017.(in Chinese) [2] PENG Wei. Principles of Steel Structure Design[M]. ChengDu:Southwest Jiaotong University Press,2004.(in Chinese) [3] WU Cong.Modern Steel Bridge[M].Beijing:China Communications Press,2006.(in Chinese) [4] YI Lun-xiong. Plate Truss Composite Structure of Railway Cable-stayed Bridge and its Construction Method.Steel Construction.2016,31(1):86-88.(in Chinese) [5] HU Hui-yue,LIU Jun-feng,NING Bo-wei.Design of Steel Truss Composite Girder of Main Bridge of Sanmenxia Huanghe River Rail-cum-Road Bridge. Bridge Construction,2018,48(2):83-88.(in Chinese) [6] GB/T 10433-2002.Cheese Head Studs for Arc Stud Welding[S].(in Chinese) [7] JTG D64-2015.Specifications for Design of Highway Steel Bridge[S].(in Chinese) [8] SUN Ying-jie,XU Wei. Design of Composite Double Decks and Fully Welded SteelTruss Girder of Pingtan Straits Rail-cum-Road Bridge[J]. Bridge Construction,2016,46(1):1-5.(in Chinese) [9] SU Guo-ming. Design of Steel Truss Girder of Main Bridge of Jiaojiang Bridge on Hangzhou-Shaoxing-Taizhou Railway[J]. Bridge Construction,2018,48(6):99-103.(in Chinese) [10] ZOU Min-yong,YI Lun-xiong,WU Guo-giang. Design of Steel Girder for the Main Bridge of Wuhu Chanjiang River Rail-cum-Road Bridge on Shangqiu-Hefei-Hangzhou Railway[J].Bridge Construction,2019,49(1):65-70.(in Chinese) [11] CHANG Fu-ping, JIANG Yan-zheng,LI Peng. Study of Orthotropic Steel Deck Plate Systems for Composite Steel Truss Girder[J]. Bridge Construction,2011,6(1):37-41.(in Chinese) [12] JTG/T D64-01-2015,Specifications for Design and Construction of Highway Steel-concrete Composite Bridge[S].(in Chinese) [13] JTG D60-2015,General Specifications for Design of Highway Bridges and Culverts[S].(in Chinese) [14] TB 10091-2017,Code for Design on Steel Structure of Railway Bridge[S].(in Chinese) [15] WANG Xin-min. ANSYS Engineering Structure Numerical Analysis[M].Beijing:China Communications Press,2007.(in Chinese) [16] LIU Yu-qing. Composite Structure Bridge[M]. Beijing:China Communications Press,2005.(in Chinese) [17] GE Sheng-jin. Steel-concrete Composite Bridge Design Based on European Standards[M].Beijing:China Communications Press,2010.(in Chinese) [18] NIE Jian-guo. Steel-concrete composite bridges[M].Beijing:China Communications Press,2011.(in Chinese) [19] ZHAO Ting-heng. Detail design of bridge steel structure[M].ChengDu:Southwest Jiaotong University Press,2014.(in Chinese) [20] WANG Hai-bin. Erection Techniques for Continuous Steel Truss Girder of a Huanghe River Rail-cum-Road Bridge of Zhengzhou-Jinan High-Speed Railway[J]. Bridge Construction,2022,52(5):8-13.(in Chinese)
2023, Vol. 17 
