设计变更条件下的桥梁监控及摩阻测试分析

张 杰1  傅工范2  田静辉3  肖汝诚1

(1.同济大学;2. 义乌市交通设计院;3.天津市政工程设计研究院 )

 

摘 要结合义乌江大桥工程实例,论述在设计变更条件下,为实现成桥后桥面线形及结构内力状态符合设计要求,以及保证设计变更前后全桥整体性能,而采取的一系列有针对性的措施,达到了有效的对线形控制和内力监测的目的。对施工中长索单端张拉时钢束实际伸长量与理论伸长量有偏差的问题进行了分析,通过现场摩阻试验,对分析结果进行了验证,得出了一些有价值的结论。

关键词:施工监控,摩阻,单端张拉

Bridge construction monitoring of design alteration and analysis of friction test

Zhang Jie1 Fu Gong-fan2  Tian Jing-hui3 et al

Abstract With the engineering practice of Yiwu River Bridge, the construction monitor and control was discussed in order to guarantee the line shape and the state of internal force of design in conditions of design alteration. The analysis was done on one-end tension of long cable, and the experiment on the friction to certification the hypothesis before.    

Keywords construction monitor and control, friction, one-end tension