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

作　　者：李江山[1] 

机构地区：[1]广东省公路勘察规划设计院,广州市510507

出　　处：《公路》2002年第2期4-7,共4页Highway

摘　　要：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.

关 键 词：预应力 连续箱梁 设计 混凝土 腹板斜裂缝 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]