（中国地震局工程力学研究所  哈尔滨 150080）

［提要］  以3个巨型钢框架结构为例，假设4个计算方案，输入代表不同场地条件的5条典型地震波，应用有限元分析方法，对不同计算方案的算例进行三维弹性地震时程反应分析。通过对不同计算方案结果的比较分析，研究考虑楼板刚度与否和次框架对巨型钢框架结构反应的影响，为进一步深入研究巨型钢结构的抗震性能及抗震设计提供基础。

［关键词］  巨型钢结构  楼板刚度  主框架  次框架  结构反应

Influence on Response of Mega Steel-frame Structures from Floor Stiffness and Hypo-frame/Authors:Liu Jieping，Zhang Lingxin(Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China)

Abstract:Three mega steel-frame structures are selected as examples, four analytical models are hypothesized, and five typical earthquake wa

ves are selected, which represent different site conditions respectively. Using finite element analysis method, three-dimensional elastic history time analysis of three mega steel-frame structures with different analytical models subjected to different earthquake ground motions is conducted. In order to study influence on response of mega steel-frame structures from floor stiffness and hypo-frame, the results of different examples are compared. The conclusions obtained lay foundation for studying the seismic performance and seismic design of mega structures profoundly.

Keywords:mega steel structure; floor stiffness; mainframe; hypo-frame; structure response

*中国地震局工程力学研究所预研究项目。