The Study Of The Seismic Performance Of The FRP Confined Concrete Bridge Columns

The bridge structure is an important part of the traffic network in our country，andsusceptible to damage under semic action. At the same time,the bridge pier, the main bearingcomponent of the bridge,is the most easy to damage in the bridge structure under the seismicaction. The brittle failure of RC columns in the bridge is ofen caused by deficiency ofductility.A new method for strengthening the columns by wrapping the FRP can shearcapacity and the ductility of the RC columns.The bridge pier is the most easily damaged partsunder earth-quake.To explore the performance of FRP material reinforcement bridge pierunder earth-quake is a very important guarantee for people’s lives and property safety ofcountry.For these reasons, this paper comined with the present research of the domestic andforeigns,adopts the method of numerical simulation for analysis the seismic performance ofFRP constraint bridge piers. This article main research content is as follows:(1)Based on the different constitutive relation of FRP confined concrete in the domesticand foreigns,choosing the most suitable for study of this article.(2)Using the software of OpenSees to simulation analysis the reinforced concrete column,the different type material of FRP confined concrete columns,By contrast,verifies thecorrectness of modeling made by OpenSees software(3)Through to analysis the different reaction by adiusting the parameters of thereinforced concrete column columns under the action of a single thrust,concluded the besteffect of confined concrete by the material of FRP.(4)To analysis the hysteretic performance of FRP confined concrete columns underrepeated load by different parameters,obtaining the comprehensive aseismic effect of FRPconfined concrete columns.