（1北京市建筑工程研究院有限责任公司，北京100039；2北京建筑工程学院，北京100044）

[摘 要]  结合北京某多层砖混结构房屋抗震加固工程，介绍了砖混墙体采用后张预应力抗震加固新技术的工程应用。并进行了八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。研究结果表明，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。

[关键词]  后张预应力；加固；砖墙；试验；施工工艺

中图分类号：TU398⁺.5          文献标识码：A         文章编号：1002-848X（2013）S1-1412-05

*北京市科技计划项目（D131100003713003）

作者简介 ：华少锋，硕士研究生，Email：huashaofeng@163.com。

Research and application on seismic behaviors of a multistory brick building retrofitted with post-tensioned tendons

Hua Shaofeng^1,2, Liu Hang¹

(1 Beijing Building Constructing Research Institute, Beijing 100039, China; 2 Beijing University of Civil Engineering and Architecture, Beijing 100044, China)

Abstract: The application of the new seismic retrofitting technology of using post-tensioning tendons to retrofit brick wall structures was presented according to a seismic retrofitting project of multistory brick building in Beijing. Meanwhile, 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.

Keywords: post-tensioned; retrofitting; brick wall; test; construction technique