Experimental study on deformation recoverability of Febased SMA reinforced concrete beam-column joints
Beam-column joints are the most important and vulnerable part of frame structures,and their destruction may lead to the collapse of the entire building structure.Shape memory alloy(SMA)as a new type of intelligent metal materials has wide applications in civil engineering.The paper aims at proposing a novel kind of beam-column joint reinforced with Fe-based SMA rebars to increase the deformation recoverability.In this paper,a pseudo-static test of the beam-column joints is used to study the seismic performance such as the hysteresis characteristics,the ultimate bearing capacity and the deformation recoverability for different SMA reinforcement ratios and normal stirrup ratios.The main factors and influencing laws that affect the seismic performance of the FE-based SMA joints including the deformation recoverability are derived,and two new concepts of the restoring force ratio at the balance position and the residual deformation ratio are proposed,respectively.The test results show that Fe-based SMA rebars can replace the ordinary steel rebars in the concrete beam-column joints to effectively increase the deformation recoverability.
Beam-column joints Fe-based shape memory alloy (Fe-based-SMA) deformation recoverability pseudo-static test seismic performance
S.Yan Z.F.Xiao M.Y.Lin
School of Civil Engineering,Shenyang Jianzhu University,Shenyang,China
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
854-863
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）