- 摘 要
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(1 北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045； 2 中國建筑科學(xué)研究院有限公司， 北京 100013；3 北京科技大學(xué)土木與資源工程學(xué)院， 北京 100083)
［摘要］三亞國際體育產(chǎn)業(yè)園體育場鋼結(jié)構(gòu)體系由外側(cè)鋼結(jié)構(gòu)、輪輻式索桁架結(jié)構(gòu)、屋頂膜結(jié)構(gòu)組成。介紹了體育場鋼結(jié)構(gòu)各組成部分的結(jié)構(gòu)體系、支承條件及連接關(guān)系，重點(diǎn)闡述了鋼結(jié)構(gòu)體系的設(shè)計(jì)難點(diǎn)及解決方案。設(shè)計(jì)了一種鉸接柱支承的水平桁架結(jié)構(gòu)，通過水平環(huán)桁架整體作用減小了環(huán)梁截面。設(shè)計(jì)了碳纖維增強(qiáng)復(fù)合材料拉索(CFRP索)組成的輪輻式索桁架結(jié)構(gòu)，減輕了懸挑端自重，減小了交叉索對環(huán)索內(nèi)力的影響，降低了索夾承受的不平衡力。對索膜結(jié)構(gòu)形態(tài)進(jìn)行了分析，實(shí)現(xiàn)了索桁架結(jié)構(gòu)初始態(tài)位形與目標(biāo)建筑幾何相一致。研究了鋼結(jié)構(gòu)體系的整體穩(wěn)定性能和各種荷載作用下的極限承載能力，結(jié)果表明鋼結(jié)構(gòu)整體穩(wěn)定性能滿足要求。研究了個(gè)別拉索發(fā)生偶然斷索情況下鋼結(jié)構(gòu)體系的抗連續(xù)倒塌性能，結(jié)果表明斷索不會引起連續(xù)斷索導(dǎo)致結(jié)構(gòu)倒塌。分析了不同施工安裝次序?qū)ν鈧?cè)鋼結(jié)構(gòu)內(nèi)環(huán)梁穩(wěn)定性的影響，通過屈曲分析得到內(nèi)環(huán)梁計(jì)算長度，用于施工過程穩(wěn)定驗(yàn)算。此外還介紹了關(guān)鍵節(jié)點(diǎn)設(shè)計(jì)。
［關(guān)鍵詞］輪輻式索桁架；鉸接柱；極限承載力；斷索分析；碳纖維索
中圖分類號：TU318 文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2021)19-0018-07
Steel structure design on the stadium of Sanya International Sports Industry Park
LIANG Chenyu1, ZHU Zhongyi1, BAI Guangbo1, CHEN Yi1, WANG Wei1, SUN Tonghai1, XUE Yuan2, LIU Xiaogang3
(1 Beijing Institute of Architectural Design, Beijing 100045， China； 2 China Academy of Building Research, Beijing 100013， China； 3 School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083， China)
Abstract: The steel structure system of the stadium of Sanya International Sports Industry Park is composed of the outer steel structure, the wheel-spoke shaped cable-truss structure and the roof membrane structure. The structural system, supporting conditions and connection relations of the various components of the steel structure of the stadium were introduced, and the design difficulties and solutions of the steel structure system were emphasized. A kind of horizontal truss structure supported by hinged columns was designed. The section of the ring beam was reduced by the overall action of the horizontal ring truss. The spoke-type cable-truss structure composed of carbon fiber reinforced polymer(CFRP) composite cable was designed, which reduces the dead weight of the cantilever end, reduces the influence of the cross cable on the internal force of the loop cable, and reduces the unbalanced force borne by the cable clamp. The form of the cable-membrane structure was analyzed, and the initial configuration of the cable-truss structure was consistent with the target building geometry. The overall stability of the steel structure system and the ultimate bearing capacity under various loads were studied. The results show that the overall stability of the steel structure meets the requirements. The continuous collapse resistance of the steel structure system in the case of accidental cable break of individual cables was studied. The results show that the cable break will not cause the continuous cable break to cause the structure to collapse. The influence of different construction and installation sequences on the stability of the inner ring beam of the outer steel structure was analyzed, and the calculated length of the inner ring beam was obtained through buckling analysis, which was used for the stability check of the construction process. In addition, the design of key nodes was introduced.
Keywords:wheel-spoke shaped cable-truss； hinged column； ultimate bearing capacity； cable break analysis； carbon fiber reinforced polymer composites cable
作者簡介：梁宸宇，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email：liangchenyu@biad.com.cn。
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