（中国建筑科学研究院工程抗震研究所， 北京 100013）

［摘要］水泥砂浆面层是多层砌体房屋抗震加固经常采用的方法，但是国家标准《砌体结构加固设计规范》(GB 50702—2011)和行业标准《建筑抗震加固技术规程》(JGJ 116—2009)中分别给出的加固后墙体抗震受剪承载力的计算方法并不相同。采用增强系数对这两本标准的计算方法进行了统一，以面层厚度、砂浆强度等级、钢筋配置、加固施工工艺为变化因素，进行了基准增强系数、不同厚度墙体增强系数的对比分析，发现了两本标准的计算结果存在着较大差异，最后为标准的修订提出了进一步的研究方向。

［关键词］抗震加固; 砌体房屋; 水泥砂浆面层; 增强系数; 抗震受剪承载力

中图分类号：TU362.1       文献标识码：A       文章编号：1002-848X(2014)11-0034-04

Discussion on calculation of seismic shear capacity of brick wall strengthening with cement mortar splint

Cheng Shaoge, Liu Pei, Bai Xueshuang

 (Institute of Earthquake Engineering, China Academy of Building Research, Beijing 100013, China)

Abstract: Strengthening with cement mortar splint is a common method for seismic strengthening of the multi-story masonry buildings. Different calculation methods of seismic capacity were given in current national standard Code for design of strengthening of masonry structures (GB 50702—2011) and Technical specification for seismic strengthening of buildings (JGJ 116—2009). In order to compare the difference between the two standards, the calculation methods of the two standards will be united firstly based on the increasing coefficient. Then the benchmark increasing coefficient and increasing coefficient with different thickness of brick wall were compared carefully, in the analysis, the mortar splint thickness, mortar strength grade, arrangement of reinforcement, construction technique were considered. It is shown that the calculation results of the two standards were quite different, and finally some research proposals for further revision of the standards are put forward.

Keywords: seismic strengthening; masonry structure; cement mortar splint; increasing coefficient; seismic shear capacity

作者简介：程绍革，研究员，博士生导师，Email: chengshaoge@163.com。

参考文献

［1］JGJ 116—2009建筑抗震加固技术规程［S］. 北京：中国建筑工业出版社，2009.

［2］GB 50702—2011砌体结构加固设计规范［S］. 北京：中国建筑工业出版社，2011.