Structural Engineering and Mechanics

  • 제71권4호
  • /
  • Pages.433-444
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  • 2019
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Experimental and numerical study on shear studs connecting steel girder and precast concrete deck

  • Xia, Ye (Department of Bridge Engineering, Tongji University) ;
  • Chen, Limu (Department of Bridge Engineering, Tongji University) ;
  • Ma, Haiying (Department of Bridge Engineering, Tongji University) ;
  • Su, Dan (Embry Riddle Aeronautical University)
  • 투고 : 2019.02.10
  • 심사 : 2019.05.31
  • 발행 : 2019.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

Shear studs are often used to connect steel girders and concrete deck to form a composite bridge system. The application of precast concrete deck to steel-concrete composite bridges can improve the strength of decks and reduce the shrinkage and creep effect on the long-term behavior of structures. How to ensure the connection between steel girders and concrete deck directly influences the composite behavior between steel girder and precast concrete deck as well as the behavior of the structure system. Compared with traditional multi-I girder systems, a twin-I girder composite bridge system is more simplified but may lead to additional requirements on the shear studs connecting steel girders and decks due to the larger girder spacing. Up to date, only very limited quantity of researches has been conducted regarding the behavior of shear studs on twin-I girder bridge systems. One convenient way for steel composite bridge system is to cast concrete deck in place with shear studs uniformly-distributed along the span direction. For steel composite bridge system using precast concrete deck, voids are included in the precast concrete deck segments, and they are casted with cast-in-place concrete after the concrete segments are erected. In this paper, several sets of push-out tests are conducted, which are used to investigate the heavier of shear studs within the voids in the precast concrete deck. The test data are analyzed and compared with those from finite element models. A simplified shear stud model is proposed using a beam element instead of solid elements. It is used in the finite element model analyses of the twin-I girder composite bridge system to relieve the computational efforts of the shear studs. Additionally, a parametric study is developed to find the effects of void size, void spacing, and shear stud diameter and spacing. Finally, the recommendations are given for the design of precast deck using void for twin I-girder bridge systems.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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피인용 문헌

  1. A Nonlinear Static Procedure for the Seismic Design of Symmetrical Irregular Bridges vol.2020, 2019, https://doi.org/10.1155/2020/8899705