靖江市體育中心體育館上承式張弦桁架拱設(shè)計(jì)研究
韓重慶1，黃遠(yuǎn)2，黃桂新3
- 摘 要
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（1 東南大學(xué)建筑設(shè)計(jì)研究院有限公司，南京 210096；2 南京長(zhǎng)江都市建筑設(shè)計(jì)股份有限公司，南京 210002; 3 深圳市東大建筑設(shè)計(jì)有限公司，深圳 518000）［摘要］靖江體育中心體育館屋面為屋脊沿矩形對(duì)角線布置的雙坡屋面，為統(tǒng)一各榀桁架形狀及受力、優(yōu)化用鋼量，設(shè)計(jì)出一種可適用于不規(guī)則坡屋面的新型上承式張弦桁架拱結(jié)構(gòu)。以用鋼量最小為目標(biāo)，采用二次開發(fā)的ANSYS優(yōu)化設(shè)計(jì)程序，對(duì)控制該結(jié)構(gòu)形狀的各參數(shù)進(jìn)行優(yōu)化。結(jié)果表明：當(dāng)桁架跨度小于100m時(shí)，宜采用在跨度三分點(diǎn)附近布置2根撐桿的結(jié)構(gòu)形式；拱腳處桁架高度建議取0.45～0.55倍的結(jié)構(gòu)高度，拱腳距支座距離建議取0.06～0.08倍的跨度；結(jié)構(gòu)用鋼量隨高跨比的增大而減小，當(dāng)高跨比取0.10時(shí)，用鋼量接近最優(yōu)值。［關(guān)鍵詞］坡屋面; 上承式張弦桁架拱; 穿心節(jié)點(diǎn); 用鋼量中圖分類號(hào)：TU242.4，TU318+.2 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2014)21-0062-05Design and research on top-bear truss-arch string structure of Jingjiang Sports Center StadiumHan Chongqing1, Huang Yuan2, Huang Guixin3(1 Architects & Engineers Co., Ltd. of Southeast University, Nanjing 210096, China; 2 Nanjing Yangtze River Urban Architectural Design Co., Ltd., Nanjing 210002, China; 3 Shenzhen Dongda Architects Design Co., Ltd., Shenzhen 518000, China)Abstract: Jingjiang Sports Center Stadium has the double-pitch roof with ridges arranged along the rectangular diagonal line. In order to unify the shape and force of each truss and optimize the steel consumption, a new type of top-bear truss-arch string structure was designed to be suitable for irregular pitch roof. A further-developed optimization program based on ANSYS was used to optimize key parameters controlling the shape of top-bear truss-arch string structure to reach the goal of the minimum steel consumption. The results show that when span of top-bear truss-arch string structure is less than 100m, two struts should be arranged at third-point of the structure. The ratio of truss height at the arch foot to total height should be 0.45 to 0.55. The ratio of arch foot span to total span should be 0.06 to 0.08. With the increase of high-span ratio, the steel consumption becomes smaller. When high-span ratio is 0.10, the steel consumption approaches the optimal value.Keywords:pitch roof; top-bear truss-arch string structure; continuous web plate joint; steel consumption作者簡(jiǎn)介：韓重慶，博士，研究員級(jí)高級(jí)工程師， Email:chq_han@seu.edu.cn。參考文獻(xiàn)［1］錢令希.工程結(jié)構(gòu)優(yōu)化設(shè)計(jì)［M］.北京:科學(xué)出版社，2011.［2］黃桂新.上承式張弦桁架拱結(jié)構(gòu)受力性能研究［D］.南京:東南大學(xué)，2012.［3］熊偉，吳敏哲. 大跨度張弦桁架形態(tài)優(yōu)化設(shè)計(jì)［J］. 建筑結(jié)構(gòu)，2007,37(2)：6-9.［4］GB 50009—2012 建筑結(jié)構(gòu)荷載規(guī)范［S］. 北京：中國(guó)建筑工業(yè)出版社，2012.［5］楊叔庸，孫文波，諸福華. 廣州國(guó)際會(huì)展中心張弦梁結(jié)構(gòu)節(jié)點(diǎn)設(shè)計(jì)［J］. 建筑結(jié)構(gòu)，2004，34(11)：26-29.［6］DIN EN-10293 Steel castings for general engineering uses［S］. Berlin：Beuth Verlag Gmbh，2005.
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