预应力砼平面曲线箱梁腹板裂缝问题的探讨  

Inquiry into Cracks in the Webs of Curved Prestressed Concrete Box Girders

作　　者：陈波[1] 周志祥[1] 刘基正[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《重庆交通学院学报》2007年第2期1-4,13,共5页Journal of Chongqing Jiaotong University

摘　　要：分析了预应力砼平面曲线箱梁腹板产生裂缝的原因,导出了在预应力管道发生位置偏差时径向力的修正计算公式和曲线箱梁腹板厚度的验算公式,讨论了防止曲线箱梁腹板裂缝的措施,可供平面曲线箱梁的设计及施工参考.Based on the analyses of the reasons for the cracks produced in the webs of curved prestressed concrete box girders, a modified formula is deduced for calculating the radial forces produced from the deviation of the location of prestressing tendons, the further formula is presented for checking the thickness of the webs and the other measures to avoid cracking in the webs are also discussed, which may be reference for the design and construction of such kind of bridge.

关 键 词：曲线箱梁桥 腹板裂缝 径向力 位置偏差 

分 类 号：U445.71[建筑科学—桥梁与隧道工程] U448.213[交通运输工程—道路与铁道工程]