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丁潔民¹，孔丹丹²，何志軍¹
（1 同濟(jì)大學(xué)建筑設(shè)計(jì)研究院，上海200092；2 河北工業(yè)大學(xué)土木工程學(xué)院，天津300132）

[摘要]  對(duì)安徽大學(xué)體育館屋蓋張弦網(wǎng)殼結(jié)構(gòu)的動(dòng)力特性進(jìn)行了分析，采用時(shí)程分析法對(duì)固定鉸支座和彈性支座張弦網(wǎng)殼結(jié)構(gòu)進(jìn)行水平、豎向地震作用分析，分析了上下部結(jié)構(gòu)協(xié)同工作對(duì)張弦結(jié)構(gòu)抗震性能的影響。結(jié)果表明，張弦網(wǎng)殼結(jié)構(gòu)的自振頻率密集，結(jié)構(gòu)的低階整體振型以豎向振動(dòng)為主，剛性網(wǎng)殼下布置索桿施加初始預(yù)應(yīng)力可以提高結(jié)構(gòu)基頻；8度多遇地震作用下，張弦網(wǎng)殼結(jié)構(gòu)的水平、豎向地震作用的內(nèi)力和位移響應(yīng)屬于同一量級(jí)，大跨度張弦網(wǎng)殼結(jié)構(gòu)的抗震設(shè)計(jì)需要對(duì)不同方向的地震作用進(jìn)行分析：大跨度張弦結(jié)構(gòu)應(yīng)對(duì)屋蓋與下部結(jié)構(gòu)整體進(jìn)行地震響應(yīng)分析或合理地對(duì)下部結(jié)構(gòu)的剛度和慣性進(jìn)行等效。
[關(guān)鍵詞]  張弦網(wǎng)殼結(jié)構(gòu)；地震響應(yīng)分析：動(dòng)力特性

    Earthquake response analysis of cable-strut-supported shell structure of Anhui University Gymnasium
    Ding Jiemin¹, Kong Dandan², He Zhijun¹
    (1 Architectural Design and Research Institute of Tongji University ,Shanghai 200092 ,China; 2 College of Civil Engjneering, Hebei University of Technology, Tianjin 300132 ,China)

Abstract:  Dynamic properties of cable-strut-supported shell structure of Anhui University Gymnasium are analyzed. Responses of pin-support and elastic-support structures to horizontal and vertical earthquakes are analyzed with the time history method. Influence of supporting structure on the earthquake response of cable-strut-supported shell structure is analyzed. The result shows that frequencies of cable-strut-supported shell structure are dense and the first mode is almost in the vertical direction. Combining prestressed cable-strut structure with rigid shell can enhance the vertical stiffness of the whole structure and then enhance fundamental frequency. In the 8 seismic fortification intensity area, the displacement and inner force responses of the structure under horizontal and vertical earthquakes are close, so during the designing of large span cable-strut structure, response analysis under earthquakes of different directions should be taken into account. Earthquake responses of the whole structure that includes supporting structure should be analyzed or reasonable methods to consider the influence of supporting structure should be developed.
Keywords:  cable-strut-supported shell structure; earthquake response; dynamic property