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(1 甘肅省建筑設(shè)計(jì)研究院有限公司, 蘭州 730030; 2 蘭州理工大學(xué)土木工程學(xué)院, 蘭州 730050;3 甘肅省工程設(shè)計(jì)研究院有限公司, 蘭州 730030)
摘要: 七里河體育場建筑造型新穎,平面采用四心橢圓,立面呈“7”字形,下部看臺(tái)為周長約 700m 的環(huán)形鋼筋混凝土框架結(jié)構(gòu),屋蓋鋼罩棚結(jié)構(gòu)為倒放三角形空間鋼管桁架結(jié)構(gòu),桁架長軸方向長約 240m,最大懸挑長度約 36m.通過對鋼罩棚結(jié)構(gòu)進(jìn)行單獨(dú)及總裝模型分析并對下部結(jié)構(gòu)是否設(shè)縫進(jìn)行對比分析,確定了合理的結(jié)構(gòu)布置形式與計(jì)算參數(shù). 采用多種軟件對結(jié)構(gòu)進(jìn)行了不同荷載組合下整體抗震分析、屋蓋穩(wěn)定性分析、防連續(xù)倒塌分析和超長結(jié)構(gòu)分析. 采用通用有限元軟件 ABAQUS 對關(guān)鍵節(jié)點(diǎn)進(jìn)行了詳細(xì)分析. 最后,對屋蓋結(jié)構(gòu)進(jìn)行數(shù)值風(fēng)洞模擬分析,給出了屋蓋表面上的平均風(fēng)壓系數(shù)和體型系數(shù)及結(jié)構(gòu)周圍流場的繞流特性. 分析結(jié)果表明:該結(jié)構(gòu)整體穩(wěn)定性能良好,強(qiáng)度與剛度儲(chǔ)備大,關(guān)鍵節(jié)點(diǎn)可靠,計(jì)算結(jié)果均滿足規(guī)范要求.
關(guān)鍵詞: 七里河體育場; 懸挑鋼桁架; 超長混凝土結(jié)構(gòu); 溫度應(yīng)力; 風(fēng)洞數(shù)值模擬; 抗震分析
中圖分類號(hào):TU398. 7 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)09-0067-08
DOI:10. 19701 / j. jzjg. 20220407
Structural design and analysis of Qilihe Stadium
HUANG Zhaosheng1,2, WANG Dong1, YANG Zhongping3, LIU Guolong1, ZHANG Chen1
(1 Gansu Institute of Architectural Design and Research, Lanzhou 730030, China;2 School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China;3 Gansu Engineering Design and Research Institute Co. , Ltd. , Lanzhou 730030, China)
Abstract: Qilihe Stadium has a novel architectural shape. The plane adopts four-center ellipse and the vertical shape is "7" .The lower grandstand is an annular reinforced concrete frame structure with a circumference of about 700m, and the roof steelcanopy is an inverted triangular space steel tube truss structure with a length of about 240m in the long axis direction and amaximum cantilever length of about 36m. Through the analysis of single and general assembly model of the steel canopystructure and the comparative analysis of whether the substructure has joints, the reasonable structure layout and calculationparameters were determined. The whole seismic analysis, roof stability analysis, continuous collapse prevention analysis andsuper-long structure analysis under different load combinations were carried out by using various softwares. The general finiteelement software ABAQUS was used to analyze the key nodes in detail. Finally, the average wind pressure coefficient andshape coefficient on the roof surface and the flow characteristics around the structure were obtained by numerical wind tunnelsimulation on roof structure. The analysis results show that the structure has good overall stability, large strength and stiffnessreserve, reliable key nodes, and the calculation results all meet the requirements of the code.
Keywords:Qilihe Stadium; cantilevered steel truss; super-long concrete structure; temperature stress; wind tunnelnumerical simulation; seismic analysis
第一作者:黃兆升,博士研究生,高級(jí)工程師,一級(jí)注冊結(jié)構(gòu)工程師,主要從事結(jié)構(gòu)抗震研究與設(shè)計(jì),Email:hzssummer@ 126. com.
[引用本文] 黃兆升,王棟,楊忠平,等. 七里河體育場結(jié)構(gòu)設(shè)計(jì)與分析[J]. 建筑結(jié)構(gòu),2023,53(9):67-74. HUANGZhaosheng,WANG Dong, YANG Zhongping, et al. Structural design and analysis of Qilihe Stadium [ J ]. BuildingStructure,2023,53(9):67-74.
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