DYNAMIC ANALYSIS OF CONCRETE GIRDER BRIDGES UNDER STRONG EARTHQUAKES: THE EFFECT OF COLLISION, BASE-ISOLATED PIER AND WING WALL
Keywords:
Dynamic Analysis, Collision, Gap, Isolation Rubber, Concrete Girder Bridge, Wing WallAbstract
This paper presents the dynamic analysis of concrete girder bridges taking into account the effect of collision on parapet wall. In addition, adopting of seismic isolation rubber on pier structure and wing wall on parapet were analyzed. Two spans concrete girder bridgeswith variation of gap were examined in theoretically by 3D FEM model of ABAQUS. The abutment was simplified by parapet wall which was modeled by 3D reinforced concrete structure. In order to examine the seismic behavior of bridge, six different inputs of seismic ground accelerations were applied at footing of pier structure.It has been suggested that allowing the collisionon abutment by restricting the girder bridges displacement, the size of expansion joints can be reduced in order to reduce the cost of construction and seismic reinforcement. According to the analytical results, it was found that installation of the wing wall had a capability for the horizontal displacement resistance. The seismic isolation rubber and the wing wall structure had a significant effect in reducing the response stress of parapet wall on small gap. Furthermore, cracking was also affected by the wing wall.
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Copyright (c) 2020 Desy Setyowulan , Keizo Yamamoto, ToshitakaYamao, Tomohisa Hamamoto (Author)
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
