Experimental and Numerical Study on Seismic Performance of Prefabricated Concrete Frame Beams and Columns
In order to further improve the seismic performance of prefabricated concrete frame beams and columns,this paper adopts a high-strength steel bar prefabricated concrete frame beam column connection structure.Small diameter high-strength steel bars are used at the bot-tom of prefabricated beams instead of ordinary steel bars.When assembling prefabricated components,small-diameter steel bars can move freely within the keyway range to avoid collisions between the tensile steel bars of beams and columns.Three specimens are designed for seis-mic performance testing and numerical research.The experimental results indicate that during the initial loading stage,due to the ideal consid-eration of the boundary constraints of the simulated nodes,the initial stiffness of the nodes is greater than the experimental results,which has little impact on the subsequent results.And the finite element calculation results are in good agreement with the experimental results.Com-pared with XJ,the energy absorption capacity and seismic performance of YZ1 and YZ2 specimens are weaker.Therefore,cast-in-place spec-imens have good seismic performance.
Prefabricated concreteFrame beamSeismic performanceNumerical research
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