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鄭良知1，許秀珍1，黃本才2

（1 上海中巍結(jié)構(gòu)設(shè)計(jì)事務(wù)所有限公司， 上海 200135； 2 同濟(jì)大學(xué)航空航天與力學(xué)學(xué)院， 上海 200092）

 

［摘要］天幕工程長540m、寬31.2m，其高低起伏的空間管桁架不僅需滿足建筑創(chuàng)意的效果，在復(fù)雜的風(fēng)荷載、溫度作用下還需要滿足結(jié)構(gòu)的彈塑性動(dòng)力計(jì)算、穩(wěn)定分析以及構(gòu)造簡潔易于施工方面的要求，從而設(shè)計(jì)出較完美適用的結(jié)構(gòu)。介紹了此空間桁架結(jié)構(gòu)方案的確定，并通過風(fēng)洞數(shù)值模擬計(jì)算確定風(fēng)振系數(shù)及荷載，進(jìn)行了考慮幾何非線性和材料非線性的荷載-位移全過程分析以及節(jié)點(diǎn)強(qiáng)度分析，最后得到幾點(diǎn)設(shè)計(jì)體會(huì)。

［關(guān)鍵詞］空間桁架； 非線性分析； 穩(wěn)定分析； 風(fēng)振系數(shù)

中圖分類號(hào)：TU393.3       文獻(xiàn)標(biāo)識(shí)碼：A       文章編號(hào)：1002-848X(2013)16-0044-05

 

Zheng Liangzhi1, Xu Xiuzhen1, Huang Bencai2

 (1 China Majesty Structure Design Office Co., Ltd., Shanghai 200135, China; 2 School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China)

 

Abstract: The tentorium is 540m in length and 33.2m in width. The space tube truss with rising and falling should not only meet the requirements of architecture creative effect, but also the requirements of dynamic elastic-plastic calculation, stability analysis and easy simple construction under the complex wind loads and temperature loads. Selection of the structural system was introduced. By wind-driven numerical simulation calculation, wind vibration coefficients and loads were determinated. Considering geometric and material nonlinearity, analysis of loaddisplacement of the whole process and the analysis of joints strength were carried out. Finally some experiences were got in the design of the project.

Keywords: space truss; nonlinear analysis; stability analysis; wind vibration coefficient

作者簡介：鄭良知，高級(jí)工程師，一級(jí)注冊結(jié)構(gòu)工程師，Email：zjlzzheng@126.com。

 

［1］蘇州工業(yè)園區(qū)天幕平均風(fēng)壓數(shù)值風(fēng)洞模擬（二）［R］.上海：同濟(jì)大學(xué)，2007.

［2］黃本才，齊輝，陳勇.懸挑屋蓋多模態(tài)和交叉項(xiàng)對(duì)風(fēng)激動(dòng)力響應(yīng)的影響［J］. 同濟(jì)大學(xué)學(xué)報(bào)：自然科學(xué)版，2004，32（6）:722-726.

［3］張昕，黃本才，徐曉明，等.體育場懸挑屋蓋空間風(fēng)激動(dòng)力響應(yīng)和等效風(fēng)荷載實(shí)用計(jì)算［J］.建筑結(jié)構(gòu)學(xué)報(bào)，2005, 26(2):40-45.

［4］徐國輝. 空間拱斜柱支承管桁架結(jié)構(gòu)的設(shè)計(jì)［J］. 結(jié)構(gòu)工程師, 2010，26(2):22-30.