（1 中国建筑科学研究院，北京100013； 2 北京工业大学建工学院，100022）
［提要］基于性能/位移的混凝土小型空心砌块结构抗震设计需要确定不同性能水平下的目标位移。改进了混凝土小砌块结构的非线性计算方法，用等效框架模拟混凝土小砌块结构，适用于对混凝土小砌块结构的抗震性能进行评估。根据Chopra对能力谱方法所做的改进，给出了混凝土小砌块结构目标位移的确定方法。对某6层混凝土小砌块结构的分析结果表明，改进的能力谱方法可以得到和动力非线性分析方法比较接近的分析结果，为确定混凝土小砌块结构在不同性能水准下的目标位移提供了一种简便实用的分析方法。
［关键词］混凝土小型空心砌块结构；基于性能；目标位移
Performancebased Approach for Determining Target Displacement of Concrete Smallsized Hollow Block Masonry/Chang Zhaozhong1，Zhou Xiyuan1,2，Wang Youwei1，Cui Jianyou1(1 China Academy of Building Research, Beijing 100013,China; 2 College of Civil Engineering, Beijing University of Technology, Beijing 100022,China)
Abstract:The accurate determination of target displacement is demanded for performance/displacement based seismic design of concrete smallsized hollow block masonry at different performance levels. A method for nonlinear analysis of  concrete smallsized hollow block masonry is developed.This method is based on an  equivalent frame simulation of concrete smallsized hollow block masonry and suitable for seismic assessment of concrete smallsized hollow block masonry. Based on the improved capacity spectrum method by Chopra,a method for determining target displacement of concrete smallsized hollow block masonry is presented. From the analytical results of a 6 storey concrete smallsized hollow block masonry building, the  method gives a good agreement with the results from dynamic nonlinear procedure, so it provides a simplified practical method for the determination of target displacement of concrete smallsized hollow block masonry at different performance levels, and the method is applicable to seismic design code.
Keywords:concrete smallsized hollow block masonry;  performancebased;  target displacement
*城市与工程安全减灾省部共建教育部重点实验室开放基金项目；北京市重点实验室开放基金项目。