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（中國地震局工程力學研究所  哈爾濱 150080）

［提要］  以3個巨型鋼框架結構為例，假設4個計算方案，輸入代表不同場地條件的5條典型地震波，應用有限元分析方法，對不同計算方案的算例進行三維彈性地震時程反應分析。通過對不同計算方案結果的比較分析，研究考慮樓板剛度與否和次框架對巨型鋼框架結構反應的影響，為進一步深入研究巨型鋼結構的抗震性能及抗震設計提供基礎。

［關鍵詞］  巨型鋼結構  樓板剛度  主框架  次框架  結構反應

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

*中國地震局工程力學研究所預研究項目。