五河口斜拉桥施工控制中间索力的确定方法

合理确定斜拉桥前支点挂篮施工的中间索力,对于挂篮受力安全和施工方便有重要作用。通过对施工过程的模拟和挂篮实际受力的分析,提出了混凝土斜拉桥前支点挂篮施工的中间索力的确定方法,并结合五河口斜拉桥的施工控制,利用该法确定了中间张拉索力。实际应用表明该方法正确、合理。

Method of Determining Middle Cable Force in Construction Control of Wuhekou Cable-stayed Bridge

It is important for safety of the suspended wagon and convenient construction to determine the middle cable force rationally when the cable-stayed bridge is constructed by suspended wagon which has a support at front end.Through simulating the construction process and analyzing the actual force of the suspended wagon,a method of determining the middle cable force is put forward for the concrete cable-stayed bridge constructed by suspended wagen.Associating the construction control of Wuhekou Cable-stayed Bridge,the middle cable forces of the bridge are determined by the method.The practical application shows that the method is correct and rational.