Inquiry into Cracks in the W ebs of Curved Prestressed Concrete Box Girders

Journal of Chongqing Jiaotong University(Natural Science) ›› 2007, Vol. 26 ›› Issue (2): 1-4.

Inquiry into Cracks in the W ebs of Curved Prestressed Concrete Box Girders

CHEN Bo;ZHOU Zhi-xiang;LIU Ji-zheng

School of Civil Engineering＆Architecture，Chongqing Jiaotong University，Chongqing 400074，China

Received:2006-02-28 Revised:2015-01-22 Online:2007-04-15 Published:2015-01-22

预应力砼平面曲线箱梁腹板裂缝问题的探讨

陈波，周志祥，刘基正

重庆交通大学土木建筑学院，重庆 400074

作者简介:陈波(1975—），男，重庆市人，硕士生，从事桥梁检测、加固及维护方面的研究.E-mail:chenbojiaoyuan@163.com

Abstract

Abstract: Based on the analyses of the reasons for the cracks produced in the webs of curved prestressed concrete box girders， a modified formula is ded uced for calculating the radial forces produced from the deviation ofthe location ofprestressing tendons，the further form ula 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 re,terence for the design and construction of such kind of bridge.

Key words: curved box girder, crack, radial force, location deviation

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

关键词: 曲线箱梁桥, 腹板裂缝, 径向力, 位置偏差

CLC Number:

CHEN Bo;ZHOU Zhi-xiang;LIU Ji-zheng. Inquiry into Cracks in the W ebs of Curved Prestressed Concrete Box Girders[J]. Journal of Chongqing Jiaotong University(Natural Science), 2007, 26(2): 1-4.

陈波，周志祥，刘基正. 预应力砼平面曲线箱梁腹板裂缝问题的探讨[J]. 重庆交通大学学报（自然科学版）, 2007, 26(2): 1-4.

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