Abstract Steel-concrete connections, as key components of hybrid bridges, present a complex structural type and mechanical behavior. On the basis of the steel-concrete connections in the Lichuan Bridge, a numerical analysis was performed in this work to comprehensively investigate the mechanical performances of each structural component and compare the characteristics of different connector types between two different schemes. Results show that the perfobond strip and stud connectors in the steel-concrete connections of the Lichuan Bridge exhibit a non-uniform mechanical behavior in the direction of the bridge midline. The connectors in the end areas near the bearing plate demonstrate a large inner force. Normal stress on the top flange is neither transversely nor uniformly distributed in the steel-concrete connections under hogging moment, but the arrangement of tendons affects the distribution of normal stress on the top flange. The mutation part of the stiffening ribs in a steel beam shows increased stress concentration. However, the two connector types only slightly influence the stress of concrete and steel flange.
Fund:Supported by the National Natural Science Foundation of China (No.51178051); the Road and Transport R&D Project for Western Regions of China Commissioned by Ministry of Transport (No.2013318812410); and the Scientific Research Project of Dongjiang Lichuan Bridge (No. R-[2014]26-624)
ZHANG Kai,LIU Yong-jian,JU Ming-jie, et al. Analysis of Structural Types and Mechanical Performance of Steel-concrete Connections without Cells[J]. Journal of Highway and Transportation Research and Development, 2016, 10(4): 55-62.
[1] CHEN Kai-li, YU Tian-qing, XI Gang. Development and Prospect of Hybrid Cable-stayed Bridges[J]. Bridge Construction, 2005(2):1-4. (in Chinese)
[2] LIU Yu-qing. Development of Design Technique for Joint Parts of Hybrid Girder[J]. World Bridge,2005(4):9-12. (in Chinese)
[3] LIU An-shuang, LIU Xue-shan, DAI Tong, et al. Design of Steel and Concrete Joint Parts of Dauble-line Bridge of Changjiang River Bridge in Chongqing[J]. Bridge Construction, 2007(2):35-38. (in Chinese)
[4] LIU Ming-hu, XU Guo-ping, LIU Feng. Study and Design of Steel-concrete Joint Part of Hybrid Girder of Edong Bridge[J]. Journal of Highway and Transportation Research and Development, 2010,27(12):78-85. (in Chinese)
[5] ZHANG Qi-zhi, WU Bao-shi. Model Test Study of Steel and Concrete Joint Section of Jiujiang Changjiang River Highway Bridge[J]. Bridge Construcion, 2013, 43(5):68-74.(in Chinese)
[6] LIU Cheng-yu, ZHAO Ting-heng. Design of Steel-concrete Connection Joint of Queshi Bridge[C]//Proceedings of Thirteenth Annual Conference of Bridge and Structural Engineering Society of China Civil Engineering Society. Shanghai:Bridge and Structural Engineering Society of China Civil Engineering Society, 1998:304-308.(in Chinese)
[7] CHEN Kai-li, WANG Jie-zao, AN Qun-hui. Model Tests on Steel-concrete Joining Section of Main Girder of a Cable-stayed Bridge[J]. Journal of Civil Engineering, 2006, 39(3):86-90. (in Chinese)
[8] PU Huai-ren. Design of the Joint Part of Steel-concrete Mixed Girder Bridge of Pingsheng-bridge of Guangdong[J]. Highway Engineering,2011,36(3):90-94.(in Chinese)
[9] ZHANG Guo-quan, DAI Shao-xiong. Stress Analysis of Steel-concrete Combined Sections in a Cable Stayed Bridge with Single Tower[J]. Structural Engineers, 2007, 23(3):26-30.(in Chinese)
[10] WEN Wu-song, WANG Shuang-yan, WANG Bang-mei. Load Transmission Study of Connections in Hybrid Cable Stayed Bridge[J]. Bridge Construction, 1997(3):75-81.(in Chinese)
[11] HU Jian-hua, HOU Wen-qi, HUANG Qiong. Experimental Study of Different Structure Forms of Steel-concrete Joint Section of Hybrid Self-anchored Suspension Bridge[J]. Journal of Railway Science and Engineering, 2007,4(5):28-34.(in Chinese)
[12] ZHANG Xi-gang, WU Wen-ming, LIU Gao. Mechanical Model and Simplified Calculation Method Steel-concrete Connection Joint with Full-connection Bearing-plates[J].Journal of Highway and Transportation Research and Development, 2013, 12(10):49-53. (in Chinese)
[13] WU Wen-ming,LIU Gao, XU Guo-ping, et al, Structural Characteristics of Steel-concrete Connection Joint with Full-connection Bearing-plate Type[J]. Journal of Highway and Transportation Research and Development, 2010, 27(3):75-80. (in Chinese)
[14] XIN H, LIU Y, HE J, et al. Experimental and Analytical Study on Stiffened Steel Segment of Hybrid Structure[J]. Journal of Constructional Steel Research, 2014, 100:237-258.
[15] DUNAI L, FUKUMOTO Y, OHTANI Y. Behaviour of Steel-to-concrete Connections under Combined Axial Force and Cyclic Bending[J]. Journal of Constructional Steel Research,1996, 36(2):121-147.
[16] KIM S, LEE C, AHN J, et al. Experimental Study on Joint of Spliced Steel-PSC Hybrid Girder, Part I:Proposed Parallel-Perfobond-rib-type Joint[J]. Engineering Structures, 2011, 33(8):2382-2397.
[17] KIM S, LEE C, KIM S, et al. Experimental Study on Joint of Spliced Steel-PSC Hybrid Girder, Part II:Full-scale Test of Spliced Hybrid I-Girder[J]. Engineering Structures, 2011, 33(9):2668-2682.
[18] KIM S E, NGUYEN H T. Finite Element Modeling and Analysis of a Hybrid Steel-PSC Beam Connection[J]. Engineering Structures, 2010, 32(9):2557-2569.
[19] GUO Jin-qiong, FANG Zhen-zheng, ZHENG Zhen. Design Theory for Box Girder[M]. Beijing:China Communications Press, 2008. (in Chinese)