Combined with construction example of Huaitong expressway Baozhaoxi bridge,The characteristics and construction method of the three column prestressed beam of highway.To provide ref-erence for design and construction of similar prestressed beam.%结合怀通高速公路宝照溪大桥施工实例，介绍高速公路三柱式预应力盖梁工程特点及施工方法。为类似预应力盖梁的设计和施工提供参考。
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