Numerical analysis of reinforced concrete seismic columns strengthened with fiber polymer
This article proposes a coplanar projection method to solve the recognition problem of steel fiber polymer intersections.Establish a numerical model for the shock absorption column specimens of active powder hospital concrete containing 1%and 2%steel fiber polymer steel fiber polymer.The comparison between the numerical model and the actual specimen slices shows that the improved method has good simulation results.Using an improved anchor cable element to simulate the bond slip behavior between steel fiber polymer and a hospital building concrete.Then,the uniaxial compression,triaxial compression,and three-point bending of a reinforced concrete seismic column sample containing 1%steel fiber polymer in a hospital building were simulated to further investigate the concrete cracking and steel fiber polymer slip behavior of the concrete seismic column sample.The failure modes of numerical reinforced concrete seismic column specimens under various mechanical tests are consistent with the experimental results,proving the practicality and accuracy of the established numerical model.This study provides a foundation for numerical simulation of the mechanics of reinforced concrete seismic columns.
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