哥斯達黎加國家體育場結(jié)構(gòu)設(shè)計與分析
李霆,李宏勝,駱順心,錢波
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李霆,李宏勝,駱順心,錢波(中南建筑設(shè)計院股份有限公司,武漢 430071)[摘要] 針對哥斯達黎加國家體育場位于高烈度地震區(qū)、鋼罩棚超大跨度拱傾斜放置、罩棚造型復雜等特點,介紹了結(jié)構(gòu)相關(guān)技術(shù)問題的處理措施。在罩棚拱基礎(chǔ)中利用預應(yīng)力拉索平衡拱豎向荷載下的水平推力,采用長樁+短樁的方式承擔地震和風下的水平推力。在看臺基礎(chǔ)之間加設(shè)水平支撐,使基礎(chǔ)梁和支撐形成一水平桁架,工程樁共同承擔地震水平作用,解決了剪力墻下因水平剪力過大而無法布樁的難題。根據(jù)罩棚建筑造型,采用拱支網(wǎng)架結(jié)構(gòu),暗置節(jié)點板的相貫焊接節(jié)點、雙向斜交桁架構(gòu)成的菱形網(wǎng)格使結(jié)構(gòu)機理符合建筑造型要求。[關(guān)鍵詞] 體育場; 預應(yīng)力拉索; 拱基礎(chǔ); 基礎(chǔ)面內(nèi)支撐; 拱支網(wǎng)架中圖分類號:TU245,TU356 文獻標識碼:A 文章編號:1002-848X(2012)12-0026-06Structure design and analysis of National Stadium of Costa RicaLi Ting, Li Hongsheng, Luo Shunxin, Qian Bo(Central-south China Architectural Design Institute Co., Ltd., Wuhan 430071, China)Abstract: The measures are described in the progress of structure design and analysis of National Stadium of Costa Rica, which is in the high intensity seismic region. The structure has a complex shape canopy and an inclined large span arch. It is used prestressed cable, long pile and short pile to balance the level thrust at the arch foundation. A truss added on the level of pile caps to dispersing the shear under structural wall. Arch supported space latticed structure adopt on the canopy. Welding concurrent line joint with internaly plate, two-way oblique truss consisting of the diamond space truss meet the architecture requirements.Keywords: stadium; prestressed cable; arch foundation; truss on foundation level; arch supported space latticed structure作者簡介:李霆,教授級高級工程師,Email:lting@vip.sina.com.參考文獻[1] 梁樞果. 援哥斯達黎加國家體育場風洞試驗與抗風性能分析[D].武漢:武漢大學,2008.[2] Codigo sismico de Costa Rica[S]. Editiorial Tecnologica de Costa Rica, 2002.[3] 李霆,劉炳清,建慧城,等. 長江防洪模型大廳結(jié)構(gòu)設(shè)計與分析[J]. 建筑結(jié)構(gòu),2010,40(3): 1-5.[4] CECS 212:2006預應(yīng)力鋼結(jié)構(gòu)技術(shù)規(guī)程[S]. 北京:中國計劃出版社,2006.[5] 沈世釗,陳昕. 網(wǎng)殼結(jié)構(gòu)穩(wěn)定性[M].北京:科學出版社,1999.