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（中國(guó)建筑西南設(shè)計(jì)研究院有限公司， 成都 610042）

［摘要］成都東安湖體育公園體育場(chǎng)主體結(jié)構(gòu)采用鋼筋混凝土少墻框架結(jié)構(gòu)，屋蓋鋼結(jié)構(gòu)采用懸挑平面桁架+立面單層交叉網(wǎng)格。除西側(cè)主席臺(tái)看臺(tái)區(qū)域外，均采用預(yù)制看臺(tái)板；  突破常規(guī)，在29m標(biāo)高桁架高度內(nèi)設(shè)置300m長(zhǎng)的高區(qū)觀景平臺(tái)及在16m標(biāo)高單層網(wǎng)格交叉處設(shè)置兩個(gè)約165m長(zhǎng)的低區(qū)觀景平臺(tái)，其平臺(tái)的豎向支承均為立面弧形交叉網(wǎng)格。在建筑南側(cè)布置了四個(gè)為29m標(biāo)高觀景平臺(tái)提供豎向交通用途的鋼筋混凝土筒體。通過(guò)對(duì)結(jié)構(gòu)進(jìn)行靜力分析、穩(wěn)定性分析、地震彈性及彈塑性分析、節(jié)點(diǎn)分析、大跨樓板舒適度、結(jié)構(gòu)抗連續(xù)倒塌等系列計(jì)算分析，保證了結(jié)構(gòu)的安全、合理、經(jīng)濟(jì)。

［關(guān)鍵詞］大懸挑；  平面桁架；  單層交叉網(wǎng)格；  觀景平臺(tái)；  少墻框架

中圖分類(lèi)號(hào)：TU245.1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)19-0022-08

Structural design of Chengdu Dong′an Lake Sports Park Stadium

FENG Yuan, CHEN Wenming, ZHOU Quan, YAO Li, WU Pengcheng,  DENG Chen, XIANG Xin′an, DENG Kaiguo 

(China Southwest Architectural Design and Research Institute Co.， Ltd.,  Chengdu 610042, China)

Abstract:Chengdu Dong′an Lake Sports Park Stadium adopts reinforced concrete less-wall frame structure for its main part, and its steel structure of roof adopts cantilever plane truss and single-layer cross grid on facade. In addition to the platform area on the west side of the podium, prefabricated viewing platform slab is adopted. To break the conventional practice, a 300m long high area viewing platform is set within the truss height of 29m elevation, and two 165m long low area viewing platforms are set at the intersection of single-layer grid at the elevation of 16m. The vertical support of the platform is vertical arc-shaped cross grid. Four reinforced concrete cylinders are arranged on the south side of the building to provide vertical traffic for the 29.0m viewing platform. Through the static analysis, stability analysis, seismic elastic and elastic-plastic analysis, joint analysis, large-span floor comfort, anti-progressive collapse and other series of calculation and analysis, the structure is proven to be safe, reasonable and economic.

Keywords:large cantilever; plane truss; single-layer cross grid; viewing platform; less-wall frame

*國(guó)家重點(diǎn)研發(fā)計(jì)劃基金資助（2016YFC0701204），中國(guó)建筑股份有限公司科技研發(fā)基金資助(CSCEC-2015-Z-43)。

作者簡(jiǎn)介：馮遠(yuǎn)，教授級(jí)高級(jí)工程師，Email:xnyfy@vip.163.com；  通信作者：周全，碩士，高級(jí)工程師，Email:283018109@qq.com。