GB ~ 25 m 1 N c 2 v = 0. 43A s 槡 E c fc 0. 7A s γf N c v E c 380 m f c A s f 3 - γ 1 Newmark 4 Newmark ML1

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1 Journal of Highway and Transportation Research and Development Vol. 31 No. 1 Jan doi /j. issn ANSYS kn 34. 3% mm kn 44. 9% mm - U441 A Slip Effect of Shear Studs in Steel - concrete Composite Beam Suspension Bridge CHEN Chu-long 1 GAO Rong-xiong 1 WU Qiao-yun 2 JIANG Fei 3 ZHU Hong-ping 1 1. School of Civil Engineering and Mechanics Huazhong University of Science and Technology Wuhan Hubei China 2. School of Environment and Civil Engineering Wuhan Institute of Technology Wuhan Hubei China 3. Central Southern Electric Power Design Institute Wuhan Hubei China Abstract Steel-concrete composite beam is combined by steel girder concrete slab and stud connectors there are different degrees of shearing deformation in the 3 components of the composite beam during stress process which cause the relative slip effect between the interface of concrete slab and steel girder. Based on the ANSYS finite element method FEM a 3D finite element model of the world's first 3-pylon 4-span suspension bridge Wuhan Yingwuzhou Yangtze River Bridge is built. By the splicing technique of FE models the refined model of the standard segment is embedded into the fishbone beam truss model and the slip effect of the shear connector between the steel girder and the precast concrete slab under the most unfavorable condition is studied. The calculation result shows that 1 under the design moving load the peak value of the single stud connector's shearing force of Yingwuzhou bridge is kn which is only 34. 3% of its design bearing strength the maximum value of the relative slipping is mm 2 under 1. 5 times the design moving load the peak value of the single stud connector's shearing force is 27 kn which reaches 44. 9% of its design bearing strength and the maximum value of the relative slipping is mm. These data indicate that the working performance of the existing stud connectors used in Yingwuzhou bridge is excellent and the bearing capacity is surplus. Key words bridge engineering steel-concrete composite beam slip effect splicing of finite element models stud connector cclking@ 163. com

2 GB ~ 25 m 1 N c 2 v = 0. 43A s 槡 E c fc 0. 7A s γf N c v E c 380 m f c A s f 3 - γ 1 Newmark 4 Newmark ML15 f = Betti Gjelsvik 373 MPa γ = σ s /f = 226 /373 = C60 5 Gjelsvik C60 N c v = 0. 7A s γf = = MN = kn N v - Δ Fisher N v - Δ Q = Q 6-7 u 1 - e Δ Δ Q ANSYS Q 3 u 4 2 N v - Δ = m m 15 m 36 m m 3 m 1

3 1-73 Ι 20 cm φ22 ML Fig. 1 1 m Layout of Yingwuzhou Yangtze River Bridge unit m Fig. 2 2 cm Standard cross-section of Yingwuzhou Yangtze River Bridge unit cm COMBIN ANSYS ANSYS SOLID45 SOLID45 COMBIN39 SHELL63 SHELL63 Y Z X COMBIN39 COMBIN39 - C MPa kg /m MPa kg /m m 3 Fig. 3 Three m standard segment model m

4 ~ 365 m ~ m Fig. 4 Layout of shear studs 530 ~ 635 m X Y Z m 105 m m 5 L1 ~ L5 R1 ~ R m 105 m 105 m 6 Fig. 6 Schematic diagram of control section numbers and locations Fig. 5 Splicing model ANSYS m kn 34. 3% mm % 0. 4 mm ~ 5 mm kn /m kn /m 8 I m MIDAS /Civil

5 kn 44. 9% mm Tab. 1 1 Slippages of shear studs in different load cases / / / / / mm /kn mm /kn mm /kn mm /kn mm /kn L L L L L R R R R R ANSYS - 27 kn 1 References J Tab. 2 Contrastive analysis of shear stud models under overload XIANG Hai-fan. Major Technical Innovations in World's and design load with maximum positive bending moment Bridge Development J. Guangxi Communication Science /mm /kn and Technology M. O L NIE Jian-guo. Steel-concrete Composite Bridge M. L Beijing China Communications Press L L J L ZHANG Jin-quan QU Zhao-le SONG Jian-yong et al. R R Overview of Multi-pylon Multi-span Suspension Bridge R J. Journal of Highway and Transportation Research and R Development R kn 34. 3% mm % mm 4 BETTI R GJELSVIK A. Elastic Composite Beams J. Computers & Structures

6 76 31 J LI Fa-xiong NIE Jian-guo. Elastic Analytical Solutions of Shear Lag Effect of Steel-Concrete Composite Beam J. Engineering Mechanics Experimental Study on Shear Behavior of Perforated J Corrugated Plate Connectors in Steel and Concrete LI Sheng-li OU Jin-ping. Analysis of Dynamic Behavior of Catwalks of Long-span Suspension Bridge without Wind- Composite Beam J. Journal of Building Structures resistant Cable J. Journal of Highway and Transportation Research and Development WANG Zhen-hai ZHAO Can-hui LI Qiao. Experimental J Investigation on Load-slip Relationship of Perfobond Rib Shear Connectors J. Journal of Southwest Jiaotong ZHANG Jin-quan QU Zhao-le SONG Jian-yong et al. University Two Principal Control Indexes of Multi-pylon Suspension 11 GB Bridge and Related Calculation Cases J. Journal of GB Code for Design of Steel Structures Highway and Transportation Research and Development M ZHU Pin-ru. Design Principle of Steel Concrete Composite Beam M. Beijing China Building Industry Press J CHEN Jian-bing YOU Yuan-bao WAN Shui. 10. PBL - J M WANG Lian-guang. Theory and Calculation of Steelconcrete Composite Structure M. Beijing Science Press 檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸檸 70 PCT 8. C J LI Hong-jiang YE Jian-shu WAN Shui et al Experimental Research on Prestressed Concrete Box Girder FUJIOKA A IIDA S YOSHIDA T et al. Development with Corrugated Steel Webs J. China Journal of of the Corrugated Steel Web T-shaped Girder SOUGAWA Highway and Transport Bridge C Proceedings of the Symposium on 9. PC Developments in Prestressed Concrete. Japan Prestressed J. Concrete Engineering Association LI Li-feng XIAO Xiao-yan LIU Qing. Study on the 12. T M. Residual Flexural Capacity of Composite Box Girders with Corrugated Steel Webs after Fatigue Damage J. China Civil Engineering Journal PRC. Ministry of Transport. Universal Design Drawings of Highway Bridge Superstructure T - beam Series M. 10. Beijing China Communications Press J JT /T JT /T Corrugated Steel Webs in Composite YANG Ming SUN Yun ZHANG Shu-ren et al. Structure Bridges Development and Prospect of Externally Prestressed Box 14 JTG D Beams with Corrugated Steel Webs J. Journal of Highway and Transportation Research and Development JTG D Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts

76 34 2. 1. 1 Fig. 1 1 a-a b-b a-a σ ma = 74. 4 MPa σ a = 15. 74 MPa σ 0a =90. 15 MPa 0. 9 σ t =135 MPa b-b σ mb = 21. 77 MPa τ b = 13. 789 MPa σ 0b =

76 34 2. 1. 1 Fig. 1 1 a-a b-b a-a σ ma = 74. 4 MPa σ a = 15. 74 MPa σ 0a =90. 15 MPa 0. 9 σ t =135 MPa b-b σ mb = 21. 77 MPa τ b = 13. 789 MPa σ 0b = 34 11 2012 11 SHIP SCIENCE AND TECHNOLOGY Vol. 34 No. 11 Nov. 2012 0 430064 GB150-98 ASME THR3 +. 4 A 1672-7649 2012 11-0075 - 07 doi 10. 3404 /j. issn. 1672-7649. 2012. 11. 017 Stress and fatigue analysis