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Analysis of Shear Behavior of Shear Key for Concrete Track on Railway Bridge Considering Construction Joint

타설 경계면을 고려한 철도교 콘크리트궤도 전단키의 전단 거동 해석

Lee, Seong-Cheol;Kang, Yun-Suk;Jang, Seung Yup
이성철;강윤석;장승엽

  • Received : 2016.01.20
  • Accepted : 2016.05.04
  • Published : 2016.06.30

Abstract

Concrete track on railway bridges should be designed to effectively respond to the movement of the superstructure of the bridge. In the design procedure, shear keys are generally placed on the protection concrete layer (PCL) before casting the concrete track so the shear force due to slip between the concrete track and the bridge super-structure can be transferred. In this paper, a nonlinear structural analysis procedure that considers the construction joint has been developed to predict the shear behavior of a shear key. With the developed analysis procedure, it was possible to predict the shear force-shear slip response at the construction joint in a shear key by considering the friction of concrete surface and the dowel action of the rebars. The analysis results showed good agreement with the test results for 4 specimens.

Keywords

Concrete track;Railway bridge;Shear key;Shear;Friction

References

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Acknowledgement

Supported by : 국토교통부