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（北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045）

［摘要］合肥南站屬于特大型交通樞紐，主站房屋蓋平面投影為矩形，采用雙向正交正放大跨桁架結(jié)構(gòu)體系。結(jié)構(gòu)桿件采用圓鋼管，節(jié)點(diǎn)主要采用焊接球節(jié)點(diǎn)和相貫節(jié)點(diǎn)，部分節(jié)點(diǎn)采用鑄鋼件。詳細(xì)介紹了主站房屋頂鋼結(jié)構(gòu)的結(jié)構(gòu)體系，同時(shí)針對(duì)工程特點(diǎn)，對(duì)結(jié)構(gòu)平面支撐體系、立體與平面桁架之間的轉(zhuǎn)換體系以及結(jié)構(gòu)角部區(qū)域桁架布置體系的優(yōu)化內(nèi)容進(jìn)行了介紹；并介紹了鋼結(jié)構(gòu)設(shè)計(jì)控制指標(biāo)及用于結(jié)構(gòu)分析的荷載及荷載組合。采用MIDAS/Gen軟件對(duì)結(jié)構(gòu)建立三維整體模型，結(jié)合自主編制的結(jié)構(gòu)校核程序進(jìn)行了結(jié)構(gòu)分析；對(duì)關(guān)鍵節(jié)點(diǎn)也采用MIDAS/Gen軟件進(jìn)行了有限元分析。結(jié)果表明，整個(gè)結(jié)構(gòu)設(shè)計(jì)滿足規(guī)范要求。

［關(guān)鍵詞］合肥南站； 主站房； 大跨桁架結(jié)構(gòu)； 結(jié)構(gòu)體系； 控制指標(biāo)； 有限元分析

中圖分類號(hào)：TU318， TU323-4， TU393-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)18-0026-06

Large-span steel structural design of main station building of Hefei South Railway Station

Wang Yi

(Beijing Institute of Architecture Design, Beijing 100045, China)

Abstract:Hefei South Railway Station is a super-large transportation hub. The planar projection shape of the roof structure of the main station building is rectangular, and the building adopts bidirectional orthogonally large-span truss structural system. Circular steel hollow pipe is used as the structural elements. Welded spherical joints and intersecting joint are adopted, and there are some cast steel joints. The structural system of the roof steel structure of the main station building was introduced in detail. At the same time, according to the characteristics of the project, and optimization contents of structural plane supporting system, and conversion system for plane truss and three-dimensional plane truss were introduced as well as optimization contents of truss arrangement system in structural corner region. The control indices, the loads and load combinations for steel structural design were introduced. MIDAS/Gen software was used to build a three-dimensional integral model of the structure, and the self-compiled structure checking program was also used for structural analysis. Finite element analysis was conducted on the key joints by MIDAS/Gen software. The results show that the design of the integral structure meets the requirements.

Keywords:Hefei South Railway Station; main station building; large span truss structure; structural system; control index; finite element analysis

作者簡(jiǎn)介：王毅，本科，工程師，Email：wy2309@126.com。