DESIGN OF PRESTRESSED CONCRETE CURVED GIRDERS FOR SCENE FRAME OF DONGLI PARK IN HARBIN
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摘要: 哈尔滨市动力区景观园景框梁采用了圆弧总长度为33.6m的预应力混凝土曲梁。对预应力曲梁的材料选择、预应力筋的线型选择、荷载取值与内力计算、预应力筋与非预应力筋的选配、曲梁裂缝及挠度控制等问题进行了分析,可供设计建造同类工程参考。Abstract: The 33.6 meter-length prestressed concrete curved girder is applied in scene f rame of Dongli Park in Harbin.The following problems of this curved girder are a nalyzed:how to determine the material of the curved girder,the profile of prestr essing tendons;how to calculate external loads and internal forces;how to comput e areas of pretressing tendons and non-prestressing steel;how to control the cr ack and deflection of the girder.It may bea reference for design and constructio n of similar projects.
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Key words:
- prestressing /
- concrete /
- curved girder
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[2] GB 50010-2002 混凝土结构设计规范 郑文忠,王英.预应力混凝土房屋结构设计统一方法与实例.哈尔滨:黑龙江科学技术出版社,1998.85~88 [3] 李江山.预应力连续箱梁设计应注意的问题.公路,2002(2):4~7 [4] 陈一马,陈莹.钢筋混凝土折梁结构设计手册.北京:机械工业出版社,1995.27~28
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