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（1 廣東省建筑設(shè)計(jì)研究院， 廣州 510010； 2 廣東省城鄉(xiāng)規(guī)劃設(shè)計(jì)研究院， 廣州 510290）

［摘要］肇慶火車(chē)站站前廣場(chǎng)鋼結(jié)構(gòu)雨棚為長(zhǎng)懸臂結(jié)構(gòu)，最大懸挑尺寸為43-760m。通過(guò)對(duì)比分析，確定了該結(jié)構(gòu)豎向支撐體系采用斜交網(wǎng)格鋼管柱體系，長(zhǎng)懸臂結(jié)構(gòu)采用平面桁架，為有效減小結(jié)構(gòu)撓度，桁架的平面支撐采用預(yù)應(yīng)力拉索。綜合考慮大懸臂結(jié)構(gòu)的力學(xué)特點(diǎn)，對(duì)結(jié)構(gòu)進(jìn)行內(nèi)力和變形分析，并對(duì)屋面進(jìn)行張拉膜結(jié)構(gòu)設(shè)計(jì)。結(jié)果表明該結(jié)構(gòu)安全可靠，可供同類(lèi)結(jié)構(gòu)設(shè)計(jì)參考。

［關(guān)鍵詞］肇慶火車(chē)站； 長(zhǎng)懸臂鋼結(jié)構(gòu)； 鋼桁架； 鋼管柱； 膜結(jié)構(gòu)

中圖分類(lèi)號(hào)：TU398-7文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)06-0019-05

Design of   large-cantilever steel structure awning of Zhaoqing Railway Station

Chen Qian1， Ou Tong1， Yang Jianwei2， Tian Xiaoxia2， Zhang Yanhui1

(1 Architectual Design and Reasearch Institute of Guangdong Province,  Guangzhou 510010, China；

2 Guangdong Urban & Rural Planning and Design Institute, Guangzhou 510290，  China)

Abstract:Steel structure awning in Zhaoqing Railway Station Square is a large-cantilever structure with the maximum cantilever size of 43-760m. Through the comparative analysis, the vertical support system of the structure adopts oblique grid steel tubular column system. Large-cantilever structure adopts plane truss in order to effectively reduce the structural deflection. The plane support of the truss adopts pre-stressed cable. Considering the mechanical characteristics of large-cantilever structure, the internal force and deformation of the structure were analyzed, and the membrane structural design was conducted on the roof. The results show that the structure is safe and reliable, and can provide reference for design of similar structures.

Keywords:Zhaoqing Railway Station; large-cantilever steel structure; steel truss; steel tubular column; membrane structure

作者簡(jiǎn)介：陳前，碩士，工程師，Email：chenqiantuo@126.com。