(1 郑州大学土木工程学院， 郑州 450002； 2 河南工业大学土木建筑学院，郑州 450052)

［摘要］对中国和美国相关规范中基础隔震结构水平地震作用的分布规律进行了分析，根据基础隔震结构的地震反应特点，给出了基础隔震结构水平地震作用改进算法。与基础隔震结构时程反应的对比分析表明，该改进算法既能较好地描述基础隔震结构水平地震作用的分布形态，又能满足结构层间剪力的要求，是合理有效的。

［关键词］基础隔震结构；水平地震作用；改进算法；规范

An improved method on horizontal earthquake action of base isolated structures

Wang Jianqiang¹, Ding Yonggang²(1 School of Civil Engineering, Zhengzhou University, Zhengzhou 450002, China;2 School of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450052, China)

Abstract:The prescription on vertical distribution form of horizontal earthquake action of base isolated structures in the codes of China and United States are expatiated, according to the earthquake response characters of base isolated structures, an improved method on horizontal earthquake action of base isolated structures is proposed, the results among the prescription in the codes, the improved method and the time history analysis are compared, it is shown that the results of the improved method not only depict the vertical distribution form very well but also satisfy the story shear of the structure, so the improved method is rational and available.

Keywords:base isolated structures; horizontal earthquake action; improved method; code

国家自然科学基金（50478050）；河南省高等学校青年骨干教师资助计划项目。

作者简介：王建强，博士，副教授，Email:wjq1975@163.com。

参考文献

［1］GB50011—2001建筑抗震设计规范［S］.北京：中国建筑工业出版社，2001.

［2］Uniform Building Code［S］. International conference of building officials, Whittier, California, 1997.

［3］International Building Code ［S］. International code council, Whittier, California, 2000.

［4］NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures ［S］. Federal emergency management agency, vol. FEMA-450, Washington DC, 2003.

［5］KELLY J M. Earthquake-resistant design with rubber (second edition)［M］. Springer: London, 1997