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（1 中國航空工業(yè)規(guī)劃設(shè)計(jì)研究院， 北京 100011；2 北京交通大學(xué)， 北京 100044）

［摘要］河南藝術(shù)中心大劇院是屋蓋為平面鋼管相貫桁架、下部由三個(gè)鋼筋混凝土結(jié)構(gòu)單元組成的復(fù)雜結(jié)構(gòu)體系。進(jìn)行了基于延性的結(jié)構(gòu)抗震設(shè)計(jì)研究，對整體結(jié)構(gòu)進(jìn)行小震、中震反應(yīng)譜分析及大震彈塑性時(shí)程分析，對結(jié)構(gòu)自振特性、構(gòu)件應(yīng)力比、結(jié)構(gòu)位移、塑性鉸分布與損壞程度等進(jìn)行了深入的量化分析。研究了結(jié)構(gòu)整體大變形失穩(wěn)破壞極限狀態(tài)下的體系強(qiáng)屈比和體系延性，并確立了關(guān)鍵節(jié)點(diǎn)不屈服的性能設(shè)計(jì)目標(biāo)，對整體結(jié)構(gòu)進(jìn)行了考慮幾何非線性、材料彈塑性、初始幾何缺陷的荷載-位移全過程屈曲穩(wěn)定分析，并完成了相關(guān)結(jié)構(gòu)構(gòu)件與節(jié)點(diǎn)的設(shè)計(jì)。實(shí)現(xiàn)了基于延性的抗震安全及體系穩(wěn)定安全的雙重設(shè)計(jì)目標(biāo)。

［關(guān)鍵詞］桁架；鋼管；延性；彈塑性時(shí)程分析；體系穩(wěn)定；屈曲分析；抗震

Ductility performance design and research of the theatre steel roof of Henan Provincial Art Centre

Ge Jiaqi¹,Wang Shu¹, Liang Haitong¹, Zhang Qingliang¹, Huang Jiyang²(1 China Aeronautical Project and Design Institute, Beijing 100011, China; 2 Beijing Jiaotong University, Beijing 100044, China)

Abstract: The theatre steel roof of Henan Provincial Art Centre is a complex structural system, comprised of the in-plane penetrated weld pipe truss and three reinforced concrete elements underneath. Firstly, structural earthquake-resistant design and research are performed based on ductility by operating analysis of minor shock, midium seismic spectrum and ultimate seismic time-history respectively, as well as quantifying structural natural frequency, member stress ratio, displacement, plastic hinge distribution, and damage level. In addition, structural overall stability design and research are mainly conducted in this design to build the performance design goals of stress-strength ratio, global deformation ductility, and non-buckling key connections respectively under ultimate limit state of large global displacement instability damage, through operating global-procedure load-displacement buckling analysis and design, as well as considering geometric nonlinearity, elastic-plastic material, and initial yemetric imperfection. Based on  series of analysis and research, the objective of dual ductility performance of both earthquake resistance and global stability safety is realized.

Keywords:truss;weld pipe;ductility；elastic-plastic time-history analysis；overall stability； buckling analysis；aseismic

作者簡介：葛家琪，研究員，Email:capdi.gssd@vip.163.com。

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