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| CONSTRUCTION TECHNIQUE THAT BRING PRESTRESSED EQUIVALENT PRESSURE TO BEAR ON NO. 0 BLOCK CANTILEVER BRACKET OF CONSTRUCTED BRIDGE |
| WANG Zhao-hui |
| Fourteenth Engineering Bureau of MOR |
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Abstract The No. 0 block of concrete continuous girder is in complicated stress state under the action of big bearing support counterforce and prestressed stress in three-dimensions. The phenomenon of stress centralization in soleplate and costal board nearby the bearing support is in evidence. It expends quite longtime in the duration, of concrete construction* because of the very large amount of concrete. It is easy that the asymmetric distortion of bracket crazes the concrete. The paper puts forward the construction method that bring equivalent prestressed pressure to bear on No* 0 block bracket of cantilever constructed bridge. This method can availably prevent the concrete crack and economize very much charge wiien it is compared with the traditional method that throw advanced press with conversion weight. At the same time, the paper introduces the design thinking of the light bracket which can be consulted and used for reference with similar engineering.
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Received: 20 May 1999
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[1]裴若娟.某特大桥部分预应力混凝土连续梁0#块空 间分析[J].铁道工程学报，1998(2):43-46.
[2]段明德.对挂篮设计及应用的探讨[J].铁道工程学 报.1998(2):129～133.
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1999, Vol. 16 
