预应力连续箱梁设计应注意的问题

Some Noticeable Problems in Design of P.C. Continuous Box Girder

预应力混凝土连续箱梁 ,由于设计和施工方面对一些问题认识不足 ,有部分在建或已建结构出现腹板斜裂缝 ,齿板后底板横向裂缝或中跨跨中底板纵向裂缝等问题。主要从设计方面分析此类裂缝出现的原因 。

Due to the neglects in design and construction,P.C. continuous box girders are found that some kinds of cracks occured on parts of the structures being or having been built. Combining theory with practice, this paper analyzes why these cracks occured and presents how to avoid them.