【摘要】 提出采用后张预应力筋对砖砌体结构进行抗震加固的新技术。为验证加固效果,采用MSC.MARC通用有限元分析软件建立后张预应力加固无筋砖墙墙片的有限元模型,进行在水平低周反复荷载下的数值仿真计算,并与试验结果进行对比验证。结果表明,后张预应力加固技术可以显著提高无筋墙体的开裂能力和抗剪承载力,改善墙体抗震性能。更多还原

【Abstract】 A new seismic retrofitting technology of using post-tensioning tendons to retrofit brick wall structures is presented.To verify the validity of the retrofitting technology,MSC.MARC was used to set up the models of one unreinforced brick wall and the other retrofitted with post-tensioned tendons,which were simulated under lateral lowcyclic reversed load,whose results were compared with those of the test.Numerical results showed that this new retrofitting technology could significantly improve the cracking capacity and shear bearing capacity,and the seismic behaviors of the brick wall retrofitted using post-tensioned tendons could be significantly improved.更多还原