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李志東1，李偉政1，袁立樸1，甘明1，高巍1，李華峰1，葉彬1，雷素敏2，尹國高2

 (1 北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045; 2 中鐵第四勘察設(shè)計(jì)院集團(tuán)有限公司， 武漢 430063)

 

［摘要］南京南站主站房采用建橋合一的復(fù)雜框架結(jié)構(gòu)，列車在站房首層頂板通過、?？?。首層結(jié)構(gòu)作為承軌層采用型鋼混凝土框架結(jié)構(gòu)，頂板沿南北向分成7段，各項(xiàng)結(jié)構(gòu)性能應(yīng)同時(shí)滿足民用及鐵路橋涵規(guī)范的要求。層2采用鋼管混凝土柱鋼桁架共同組成的框架結(jié)構(gòu)，為減小頂板溫度區(qū)段長度，通過在桁架側(cè)伸出牛腿設(shè)置限位滑動(dòng)支座的方法，將樓面分成3段。屋面結(jié)構(gòu)采用雙向正交正放鋼網(wǎng)架，為加強(qiáng)整體剛度未設(shè)置溫度縫。主站房結(jié)構(gòu)自下而上形成“7-3-1”的復(fù)雜結(jié)構(gòu)分段體系。結(jié)構(gòu)設(shè)計(jì)中，采用三維實(shí)體建模整體分析計(jì)算，列車及相關(guān)荷載作為特殊工況計(jì)入計(jì)算模型中，以保證計(jì)算精度滿足要求。鑒于工程規(guī)模宏大，設(shè)計(jì)中采用多點(diǎn)輸入地震反應(yīng)的時(shí)程分析法進(jìn)行了抗震補(bǔ)充計(jì)算，根據(jù)分析結(jié)果對(duì)相關(guān)部位進(jìn)行加強(qiáng)。還就列車振動(dòng)對(duì)站房舒適度的影響、CFD方法在工程中的應(yīng)用、關(guān)鍵構(gòu)件及斗拱節(jié)點(diǎn)的設(shè)計(jì)進(jìn)行了介紹。

［關(guān)鍵詞］建橋合一結(jié)構(gòu)； 列車荷載； 列車振動(dòng)； 承軌梁； 斗拱節(jié)點(diǎn)

中圖分類號(hào)：TU248.1；TU337；TU375      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2013)17-0021-12

 

Li Zhidong1, Li Weizheng1, Yuan Lipu1, Gan Ming1, Gao Wei1, Li Huafeng1, Ye Bin1, Lei Sumin2, Yin Guogao2

 (1 Beijing Institute of Architectural Design, Beijing 100045, China; 2 China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China)

 

Abstract: The project of Nanjing South Railway Station uses building-bridge combined complex frame structure, the train will stop or go through the elevated station. The first-floor structure which directly bears the train loads uses steel reinforced concrete composite frame structure, the roof is divided into 7 sections along the north and south, the frame structural performance should meanwhile satisfy the requirements of civil and railway bridge and culvert codes. The level 2 uses frame structure in which concrete-filled steel tube column and steel truss are combined. In order to reduce the length of roof temperature segment, the roof is divided into 3 sections by limit sliding supports installed on the corbels which overhang on the trusses. The roof structure uses the bidirectional orthogonal space truss, where the temperature seam is not interposed in order to enhance the overall roof stiffness. The building structure of the main station consists of a thorough “7-3-1”complex structure system. The usage of three dimensional entity computation model into which the train and correlating loads were put as special operating modes and overall analysis computation, can guarantee to meet the computation precision requirement. Concerning broad scale of the project, multi-point input seismic response time-history analysis was complementally used and the correlating components were strengthened according to the analysis result. The influence of train vibration on the station building comfort level is also introduced, the application of CFD method and the key components as well as the ‘dougong’ node design etc.

Keywords: building-bridge combined structure; train load; train vibration; bearing-rail beam; ‘dougong’  node

作者簡介：李志東，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：zhidong_li@163.com。

 

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