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（1 中國(guó)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81m×108m大跨度鋼結(jié)構(gòu)，下部由主臺(tái)、后臺(tái)、觀眾廳三個(gè)混凝土結(jié)構(gòu)單元組成的復(fù)雜結(jié)構(gòu)體系。采用僅考慮上部鋼結(jié)構(gòu)、上下結(jié)構(gòu)共同工作的整體結(jié)構(gòu)、改變上下結(jié)構(gòu)連接的滑動(dòng)支座約束剛度等不同結(jié)構(gòu)計(jì)算模型，進(jìn)行小震作用反應(yīng)譜分析、大震作用動(dòng)力彈塑性時(shí)程分析。結(jié)果表明，下部結(jié)構(gòu)剛度以及支座約束剛度對(duì)屋蓋鋼結(jié)構(gòu)自振周期、地震作用總水平剪力、水平位移、支座反力影響均超過(guò)10%；在罕遇地震作用下對(duì)結(jié)構(gòu)塑性鉸分布有明顯的影響。屋蓋鋼結(jié)構(gòu)抗震安全性能設(shè)計(jì)應(yīng)考慮上下部共同工作影響。

［關(guān)鍵詞］上下結(jié)構(gòu)共同工作；支座約束剛度；環(huán)桁架；反應(yīng)譜分析；彈塑性時(shí)程分析；塑性鉸

Earthquake resistance behavior analysis and research of the coincident structural steel top roof and bottom structures of the theatre of Henan Provincial Art Centre

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

Abstract:The theatre of Henan Provinical Art Centre is a complex structural system, including the long-span structural steel roof with the dimension of 81m×108m and the reinforced concrete bottom structures consisting of main stage, back stage, and exhibition hall. Both spectral response analysis of frequently occured earthquake action and elastic-plastic time-history analysis of seldomly occurred earthquake action are performed, considering the top structure only, the coincident top and bottom structure, and the structures by modifying sliding support connections between top and bottom structures. As a result, there are more than 10 percent impacting  on natural frequency of the roof, total seismic horizontal shear force, horizontal displacement, and support reaction, as well as especially apparent impact on the distribution rule of structural plastic hinge under seldomly occurred earthquake action ,due to the stiffness of bottom structure and its support restraint. And the coincident effect of top and bottom structures shall be considered in the design of structural steel roof′s earthquake-resistance behavior.

Keywords:coincident top and bottom structures; stiffness of support restraint; hoop truss; spectral response analysis; elastic-plastic time-history analysis; plastic hinge

作者簡(jiǎn)介：王樹，一級(jí)注冊(cè)結(jié)構(gòu)工程師。

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