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Analysis on Damage of Urban Bridges Caused by Vehicle Collision
PEI Xiao-yin，WEN Chuan-yong，ZHANG Yong-shui
2011, 30(1):
19-21.
The stress state of the bridge pier under the collision of heavy vehicles with different speeds，and the collision
mechanism of vehicle and bridge are mainly studied． The simulation analysis of piers and vehicles is carried out on the basis
of the general finite element program ABAQUS． The plain concrete three-dimensional entity model is used as the pier
model． The nonlinearity of concrete material is fully considered and reinforced steel is calculated with the consideration of
liner elasticity． Ordinary steel entity model is used as the vehicle model，without the consideration of the impact on the
vehicles in the collision． Simulated analyses which aim at the situation of vertical impact on the pier caused by different
vehicles with three different speeds are carried out． Analyses show that the stress of the pier's collision point is firstly increased
with the increase of time，and then the stress will decrease when it reaches the maximum value． This characteristic
conforms to the plastic destruction law of the concrete． Meanwhile，analyses also show that the higher the vehicle speed is，
the larger the stress and displacement of the pier reaches.
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