The Action Of Bridge Pier Structure Seismic Performance Response Analysis Under Multi-dimensional Earthquake

This article use the finite element analysis software OpenSees static Pushoveranalysis of reinforced concrete hollow pier model and dynamic time history analysis.By means of the existing test model to model, then the dynamic model of the staticPushover analysis and time history analysis, comparing different models under theaction of the multi-dimensional seismic aseismatic performance, find out the influenceof different model parameters on the seismic performance of the model.During the earthquake ground motion yes multidimensional, research on themulti-dimensional seismic also more and more, more and more necessary. Seismicwaves through the movement of the ground is very complex, various points ofvibration velocity and vibration period and vibration phase is different. Due to thedifference between the motion of a particle on the ground, can make each part of theground not only produce three translation component, and also can produce threerotational component. In this paper, the dynamic analysis is mainly on the hollow piermodel three orthogonal translation component of ground motion, that is, a vertical andtwo horizontal component seismic response analysis of hollow piers at the same time.Therefore, this article using OpenSees software for hollow pier model under themulti-dimensional seismic response analysis of the seismic performance of the resulthas a certain research significance. This article has carried on the following severalaspects work:1. Through extensive and in-depth consulting literature, understanding of thehollow pier under the action of the multi-dimensional seismic damage forms andreasons of preliminary determine the factors influencing the seismic performance ofbridge piers.2. By an example of the experiment for the model to establish the correspondingOpenSees numerical model, and compared with the experimental results, verify theOpenSees simulation accuracy.3. Through the Pushover analysis of OpenSees model under different seismicwave and the dynamic time history analysis, research in an axial compression ratio,reinforcement ratio, height of pier under the bridge seismic performance.