- 摘 要
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（1 中南建筑設計院股份有限公司，武漢 430071；2東南大學土木工程學院，南京 210096；3 南通新華建筑安裝工程有限公司，南通 226300）
［摘要］會議室預應力混凝土曲梁往往具有跨度大、半徑大、圓心角小等特點，預應力配筋主要應針對豎向平面內的彎矩，同時盡可能減小扭矩的作用。曲梁中預應力的效應應包含由于水平向等效荷載產生的分布等效扭矩。為了盡可能減小扭矩的不利作用，提出了預應力筋在截面橫向偏置的布筋方式。實例計算結果表明，這一布筋方式在保證豎向平面彎曲效應的前提下，起到了降低扭矩峰值的作用。
［關鍵詞］大跨度；預應力；曲梁；偏置
中圖分類號：TU378-2文獻標識碼：A文章編號：1002-848X(2012)03-0125-03
Research on prestressed bar distribution and design method of-prestressed concrete curved beam of conference hall
Zhao Fuling1, Wu Jing2, Cheng Xuan3(1 Central-South Architectural Design Institute Co., Ltd., Wuhan 430071, China;2 School of Civil Engineering, Southeast University, Nanjing 210096, China; 3 Xinhua Construction and Installation Engineering Company, Nantong 226300, China)
Abstract:Prestressed curved beams of conference hall are usually have characteristics of large span, big radius, small central angle, etc. Prestressed bars are applied to balance the moment in the vertical plane and minimize the torque action. It is suggested that the prestressing effect should include the distributed equivalent torque under horizontal equivalent loads. In order to minimize the adverse effect of the torque action, bars should be arranged eccentrically in the horizontal section. Examples showed that prestressed bars arranged in this pattern could reduce the peak torque and balance the moment in vertical plane at the same time.
Keywords:large span; prestress; curve beam; offset
作者簡介：趙福令,碩士, Email:zhaofuling_1982@126.com。
參考文獻
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［2］E A B SALSE. Analysis and design of prestressed concrete circular bow girder for bridge structures［C］//Second International Symposium on Concrete Bridge Design ACI,American Concrete Institute, Defroit,1969: 714-740.
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