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(北京市建筑設(shè)計(jì)研究院 北京 100045)
【提要】 大開口環(huán)形空間索桁架結(jié)構(gòu)是由內(nèi)環(huán)索將平面索桁架連成整體的一種索桿張力結(jié)構(gòu)，目前世界上已有幾個(gè)大型體育場采用了這種結(jié)構(gòu)體系。介紹了這種結(jié)構(gòu)體系的穩(wěn)定性分析理論和自應(yīng)力模態(tài)計(jì)算方法，研究了這種結(jié)構(gòu)體系自應(yīng)力模態(tài)的特點(diǎn)和力學(xué)性能。分析表明結(jié)構(gòu)空間性能好，內(nèi)力分布均勻，對非對稱荷載有較強(qiáng)的適應(yīng)能力，并具有較高的承載能力。
【關(guān)鍵詞】 索桁架 內(nèi)環(huán)索 自應(yīng)力模態(tài) 靜力性能 結(jié)構(gòu)承載力
Research of Space Cabletruss Structure with Large Opening Annular Plan/Zhu Zhongyi, Ke Changhua(Beijing Institute of Architectural Design, Beijing 100045, China)
Abstract:The space cabletruss structure with large opening annular plan is one of cablestrut tensile structures, composed plan cabletruss structures connected by inner rings. Several stadiums in the world have adopted the structural type. The cablestrut structure's stability theory and method of solving the selfstress modes are introduced. The study about characters of the selfstress modes and static performance is carried out. It is shown that the structure is a good spatial structural system which internal force distributes uniformly, can fit better unsymmetric load and has excellent loadcarrying capacity.
Keywords:cabletruss structure; inner ring; states of selfequilibrium stress; static performance; loadcarrying capacity