（悉地國(guó)際設(shè)計(jì)顧問（深圳）有限公司，上海 200433）

[摘要]  地下樞紐工程局部區(qū)域具有大跨度、重荷載的特點(diǎn)。某樞紐工程地下室頂板覆土厚度為1.1~1.8m，局部區(qū)域梁跨度為16.8~21m，出地面高架平臺(tái)樓面梁縱向跨度為21m，橫向跨度為16.2m并挑出6m，樓面活荷載為20kN/m²。介紹了該工程預(yù)應(yīng)力梁的設(shè)計(jì)思想和方法，可供同類工程參考。

[關(guān)鍵詞]  地下樞紐；大跨度結(jié)構(gòu)；預(yù)應(yīng)力混凝土梁

中圖分類號(hào)：TU398+.9               文獻(xiàn)標(biāo)識(shí)碼：A         文章編號(hào)：

作者簡(jiǎn)介：史曉宇，博士， Email：shixy1978@126.com。

Design on prestressed concrete beams of underground control building

Abstract: Large-span and heavy load are the characteristics of underground control buildings. The depth of soil upon top slab of an underground control building is variable from 1.1 meters to 1.8 meters, and the spans for some beams are 16.8 meters or 21 meters respectively. Span of longitudinal beam for the trestle is 21 meters, and transverse beam is 16.2 meters with cantilever beam extended for 6 meters. The live load of slabs is 20kN/m². Design method and considerations for prestressed concrete beamswere discussed, which can be used in the same structures.

Keywords: underground control building; large-span structure; prestressed concrete beam

參 考 文 獻(xiàn)

[1] JGJ140—2004 預(yù)應(yīng)力混凝土結(jié)構(gòu)抗震設(shè)計(jì)規(guī)程[S]. 北京：中國(guó)建筑工業(yè)出版社，2004.

[2] LIN T Y, BURNS N H. Design of prestressed concrete structures [M]. Third Edition. New York： John Wiley and Sons, 1981.

[3] DGJ08-69—2007 預(yù)應(yīng)力混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)程[S]. 上海：同濟(jì)大學(xué)出版社, 2007.

[4] GB50009—2012 建筑結(jié)構(gòu)荷載規(guī)范[S]. 北京,中國(guó)建筑工業(yè)出版社,2012.

[5] 舒宣武, 韋宏. 廣州國(guó)際會(huì)議展覽中心大跨度預(yù)應(yīng)力混凝土梁設(shè)計(jì)[J].建筑結(jié)構(gòu),2003,33(12):46-49.