Determination of reasonable parameters for skew bridge under different skew angles

A finite element model is created using OpenSees software to perform a time history analysis in order analyze the seismic response law of skew bridge and damage volume its key components, typical 3×20 m continuous girder as an example. The under various factors such size abutment expansion joint, shear gap, strength studied then rate assessed for bearing, key, pier. research results show that action earthquake ground motion with 0.3 g PGA, force transmitted pier small, elastic owing sliding but degree larger than bearing impact increases rotation effect main beam direction off acute angle, resulting greater at angle obtuse angle. decreases increasing is, smaller joint will be corresponding maximum displacement key. With increase deformation limitation on significantly, linear slip, which risk subsidence. strength, greatly first, slightly. However, obviously. In area high earthquake, it recommended can “fuse element”. For any oblique gap reduced 2 cm, increased 125 % or 150 %. When between 30 60, 12 cm 16 cm.