- 摘 要
-
（北京交通大學土建學院，北京 100044）
［摘要］為探討大跨空間結(jié)構中采用上部鋼結(jié)構-下部混凝土結(jié)構組合體系的鋼混凝土結(jié)構的共同工作模式，以擬建工程海原博物館為算例，分別建立僅上部鋼結(jié)構模型和鋼混凝土結(jié)構整體模型，并分別對兩模型進行了靜力分析、小震作用彈性分析、大震作用動力彈塑性時程分析。此外，在罕遇地震下，還探討了混凝土結(jié)構的彈塑性性質(zhì)對整體結(jié)構的影響。結(jié)果表明，在靜、動力作用下，采用共同工作模式能夠極大地提高結(jié)構的位移、內(nèi)力等性能指標。在設計分析時，不能忽視下部結(jié)構支承作用的放大效應；在罕遇地震作用下，考慮下部混凝土彈塑性影響后會減弱結(jié)構的地震響應。
［關鍵詞］共同工作；動力分析；彈塑性時程分析；混凝土彈塑性
中圖分類號：TU391文獻標識碼：A文章編號：1002-848X(2011)03-0050-05
Research on the coincident work between upper steel structure and lower
concrete structure of Haiyuan Museum
Chen Dan, Yang Weiguo, Zhao Ya, Liu Wuhua
(School of Civil Engineering & Architecture, Beijing Jiaotong University, Beijing 100044, China)
Abstract:In order to investigate the joint work pattern of upper steel part and lower supporting concrete part，the example of Ningxia Haiyuan Museum was adopted to build finite element models for upper steel structure only and stee-concrete structure. And a further analysis for the models was done in terms of statistic analysis, elastic analysis under frequent earthquake and dynamic elasto-plastic time history analysis under immediate earthquake. Besides, the influence of concrete structure’s elasto-plastic property to the whole structure under rare earthquake was discussed. The results show that the joint work pattern can improve the performance of the structure such as increasing displacement and internal force considerably. Moreover， the magnification effect of the lower structure’s supporting action can not be ignored in design. And the seismic response of the structure will be declined if the elasto-plasticity of the low-part concrete under rare earthquake is taken into account.
Keywords:coincident work; dynamic analysis; elasto-plastic time-history analysis; concrete elasto-plasticity
作者簡介：陳丹，碩士，Email：cherry87.cd@163.com。
參考文獻
［1］王樹，葛家琪，張慶亮，等. 大劇院上下結(jié)構共同工作對鋼屋蓋抗震性能影響分析［J］. 建筑結(jié)構，2008，38(12)：7-9.
［2］黃季陽. 大懸挑鋼屋蓋結(jié)構預應力體系分析與抗震性能研究［D］. 北京：北京交通大學，2008.
［3］王亞勇. 關于設計反應譜、時程法和能量方法的探討［J］. 建筑結(jié)構學報, 2000, 21(1): 21-28.
［4］曹資，薛素鐸. 空間結(jié)構抗震理論與設計［M］. 北京：科學出版社，2005.
