张惠英  吴  朋  王  浩
    （清华大学工程设计研究所  北京 100084）

[提要]  某办公楼是北京地区五十年代建造的具有代表意义的砖砌体结构房屋。经过对该房屋进行了抗震加固，改造后使其具有了8度抗震设防能力，并增设了中央空调等现代设施。作者主要介绍了有关的结构设计方法，供参考。
[关键词]  夹板墙  抗震加固  刚度折算模型

An office building is a typical brick masonry structure which was built in the mid 1950's in Beijing.rrhe structural design on seismic strengthening against 80 earthquake intensity and modification are introduced.ln addition,this building is added with modern equipments, such as central air-conditioning system.
Keywords:  masonry building; concrete clamping plate; seismic strengthening; model; transformed stiffness