Structural Engineering and Mechanics

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A study on preventing the fall of skew and curved bridge decks by using rubber bearings

  • Published : 2001.10.25
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Abstract

The paper deals with preventing the collapse of by the means of supporting the bridges by rubber bearings and pedeck structures of skew and curved bridges during earthquakes, rmitting pounding between the decks and the abutments. Seismic response during pounding is characterized by various phenomena, such as the caging of bridge decks between abutments during an earthquake or decks popping out. These behaviors depend on only a small difference in seismic intensity. Regarding the global characteristics of a seismic response, smaller clearance between a deck and its abutments results in smaller impact damage of the abutments as well as lesser deformation of the rubber bearings. Similarly, smaller clearance between a deck and the side blocks results in smaller damage. The stiffnesses of the bearings and the stiffness ratio between them control the deck displacement. In short to medium length bridges, zero clearance between a deck and the abutments or the deck and the side blocks is the most effective way in preventing the deck from falling and limits the damage to the abutments or the side blocks.

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References

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Cited by

  1. Rigid-Body Motion of Horizontally Curved Bridges Subjected to Earthquake-Induced Pounding vol.21, pp.12, 2016, https://doi.org/10.1061/(ASCE)BE.1943-5592.0000962
  2. Seismic performance of single pier skewed bridges with different pier-deck connections vol.10, pp.6, 2016, https://doi.org/10.12989/eas.2016.10.6.1467
  3. Simplified structural response of continuous span bridges curved in plan vol.2, pp.3, 2007, https://doi.org/10.1556/Pollack.2.2007.3.6
  4. Eccentricity-Induced Seismic Behavior of Curved Bridges Based on Controllability vol.12, pp.10, 2020, https://doi.org/10.3390/sym12101633
  5. The effect of curvature angle of curved RC box-girder continuous bridges on their transient response and vertical pounding subjected to near-source earthquakes vol.28, pp.None, 2001, https://doi.org/10.1016/j.istruc.2020.09.019