Analysis of the Traveling Wave Effect of Deck Reinforced Concrete Arch Bridge
Based on the size of a foreign long-span arch bridge,the equivalent scale of the prototype bridge and the shaking table test are carried out according to the size of the shaking table,and the finite element software ABAQUS is used to model and verify the analysis of the traveling wave effect.The arch ring,column and bridge deck are built with solid elements.The seismic wave is Lanzhou wave applicable to Class Ⅱ site.The acceleration time history is adjusted to lm/s2,and the longitudinal and vertical ground motions are input.The vertical seismic motion is 0.65 times of the longitudinal earthquake.This paper analyzes the influence of the traveling wave effect produced by different wave velocities on the axial force,bending moment and the displacement of the arch foot,1/4 section,3/4 section and 1/2 section of the arch ring of the reinforced concrete arch bridge under the Class Ⅱ site conditions.The research results show that under the action of traveling wave effect,the axial force of each key section of the arch ring decreases with the increase of wave velocity.The in-plane bending moment first decreases,then increases,and then decreases again.It finally tends to be stable.In terms of the displacement,the traveling wave effect has a significant impact on the displacement of 1/4,1/2,and 3/4 sections.
reinforced concrete arch bridgescale modeltraveling wave effectearthquakefinite element modelnu-merical simulation
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