介绍了简支结构变连续体系在墩顶处施加纵向体外预应力的施工方法。
The paper introduces longitudinal construction method externally prestressed at pier's top when simply-supported structure turns to continuous hierarchy.
在设有大吨位吊车系统的重型厂房中，吊车梁用钢量所占比例较大，对吊车梁的优化设计对工程造价影响很大，大跨多跨重型厂房吊车梁宜采用突缘变截面简支结构。
The weight of steel for crane beam has a great proportion in the total amount consumed in the construction of the heavy-duty plant with large-tonnage cranes.
因此，桥梁上部采用先简支后连续梁结构越来越多。
Therefore, the upper bridge with simply supported continuous beam structure more and more.
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