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拱桥成桥后拱轴线型是否符合设计要求,将直接影响拱桥结构内力,如果拱轴偏离设计拱轴线过大,将对拱结构产生附加的内力,这显然对拱结构的使用安全是不利的。如何判断各施工阶段所测的应力值与变形是否满足要求,必须在施工前将各施工阶段施工过程模拟,以便于与实测值进行比较,本文主要对系杆拱桥各施工阶段进行模拟,以便于指导施工。
If the arch axis shape after arch bridge is in compliance with the design requirements, it will directly affect the internal force of the arch bridge structure. If the arch axis is too large from the designed arch axis, additional internal force will be generated on the arch structure, which obviously is unfavorable to the safety of the arch structure. How to judge whether the stress value and deformation measured in each construction phase meet the requirements, we must simulate the construction process before construction so as to compare with the measured value. This paper mainly simulates each construction stage of the tied arch bridge, in order to facilitate Guide construction.