- 摘 要
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廖旭釗
(廣東省建筑設(shè)計(jì)研究院，廣州510010)[摘要] 廣州大學(xué)城中心區(qū)體育場東看臺罩棚采用“預(yù)應(yīng)力斜拉網(wǎng)格——桅桿吊掛的雙鉸結(jié)構(gòu)體系”，本文結(jié)合工程實(shí)際，總結(jié)了斜拉網(wǎng)格結(jié)構(gòu)的結(jié)構(gòu)特點(diǎn)及主要設(shè)計(jì)要素的影響：介紹了大跨度鋼結(jié)構(gòu)罩棚風(fēng)荷載的特點(diǎn)及荷載風(fēng)振系數(shù)的簡化處理方法，總結(jié)了罩棚抗風(fēng)設(shè)計(jì)的難點(diǎn)；簡要介紹了本工程斜拉網(wǎng)格結(jié)構(gòu)拉索預(yù)應(yīng)力的確定原則及施工控制；提出了“局部優(yōu)化配重”的無抗風(fēng)索設(shè)計(jì)思路；對本工程斜拉網(wǎng)格結(jié)構(gòu)整體穩(wěn)定問題進(jìn)行了分析。
[關(guān)鍵詞] 承載力特征值；修正系數(shù)；基礎(chǔ)埋深The steel shed structure design of the east stand of Guangzhou University Cty's central stadium
Liao Xuzhao
(The Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010, China)Abstract: The system of prestressed stay grid and suspended mast with double hinges" is adopted in the east stand of Guangzhou University City's central stadium. This article summarizes the structural characteristics of stay grid structure and infections of main design factors from actual constructions. The characteristics about wind loads of the large-span steel shed structure and simplifying methods for the wind-shake coefficient ofloads are introduced, in the meanwhile summarizing the difficulties in the wind-resistance design ofsheds. The confirming principles for prestress forces of stay grid cables and constructional controlling are briefly presented, bringing forward the designing idea of "optinuzationally partly weighed" windless cable. The whole body stabilization ofthe stay grid structure in this project is analysed.
Keywords: characteristic-value of bearing capacity; modified coefficient;
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