Earthquakes and Structures

  • 제10권6호
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  • Pages.1467-1486
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  • 2016
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic performance of single pier skewed bridges with different pier-deck connections

  • Attarchiana, Nahid (Int'l Institute of Earthquake Eng. and Seismology (IIEES)) ;
  • Kalantari, Afshin (Int'l Institute of Earthquake Eng. and Seismology (IIEES)) ;
  • Moghadam, Abdolreza S. (Int'l Institute of Earthquake Eng. and Seismology (IIEES))
  • 투고 : 2015.02.14
  • 심사 : 2016.05.23
  • 발행 : 2016.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

This research focuses on seismic performance of a class of single pier skewed bridges with three different pier-deck connections; skew angles vary from $0^{\circ}$ to $60^{\circ}$. A well-documented four span continuous deck bridge has been modeled and verified. Seat-type connections with fixed and sliding bearings plus monolithic pier-deck connections are studied. Shear keys are considered either fully operational or ineffective. Seismic performances of the bridges and the structural components are investigated conducting bidirectional nonlinear time history analysis in OpenSees. Several global and intermediate engineering demand parameters (EDP) have been studied. On the basis of results, the values of demand parameters of skewed bridges, such as displacement and rotation of the deck plus plastic deformation and torsional demand of the piers, increase as the skew angle increases. In order to eliminate the deck collapse probability, the threshold skew angle is considered as $30^{\circ}$ in seat-type bridges. For bridges with skew angles greater than $30^{\circ}$, monolithic pier-deck connections should be applied. The functionality of shear keys is critical in preventing large displacements in the bearings. Pinned piers experience considerable ductility demand at the bottom.

키워드

과제정보

연구 과제 주관 기관 : International Institute of Earthquake Engineering and Seismology (IIEES)

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피인용 문헌

  1. Developing a new procedure for evaluating the ductility capacity of rectangular RC piers subjected to biaxial flexural loadings vol.172, pp.None, 2016, https://doi.org/10.1016/j.engstruct.2018.05.108
  2. The Effect of In-Span Hinges and Span Numbers on the Seismic Vulnerability of Curved Box-Girder Highway Bridges Considering Material and Geometric Uncertainties vol.7, pp.4, 2021, https://doi.org/10.1061/ajrua6.0001164