后张预应力加固砖墙抗震性能研究及工程应用

提出采用后张预应力技术对砖混墙体进行抗震加固的新技术,并进行8片试验墙体在水平低周反复荷载下的试验研究.对比分析了未加固墙体与加固墙体的破坏形态和受力特点.试验结果表明,后张预应力加固砖砌体墙体可以显著提高墙体的延性和抗剪承载力,改善破坏形态.

Research and application on seismic behaviors of brick walls retrofitted with post-tensioned tendons

A new seismic retrofitting technology of using post-tensioning tendons to retrofit brick wall structures was presented and eight brick walls retrofitted with post-tensioned tendons were tested under lateral low-cyclic reversed load. Mechanical behaviors and failure modes of the seismically retrofitted brick walls using post-tensioning were compared to the response of a non-retrofitted brick wall. It could be found that the ductility and the shear capacity of the brick wall retrofitted using post-tensioned tendons could be significantly improved, and the failure modes were also enhanced.