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双直立PC斜拉桥以其开阔的桥面视野、优美的造型以及明确合理的受力性能,被我国诸多市政桥梁工程所采用。在该类新型结构体系施工过程中仍为很多问题需求解决,本文以采用该造型的某实例桥梁工程为背景,针对在极端高温施工条件下桥梁结构体系转换的种种困难,提出了一种新的斜拉桥体系转换技术,并通过有限元分析对结构进行仿真分析,从理论上对该方法的可行性进行验证。研究结果表明,该方法在确保了桥梁结构的受力合理的情况下大大提高了施工的进度,可以为其它类似工程提供参考。
Double vertical PC cable-stayed bridge with its open deck view, beautiful shape and a clear and reasonable force performance, by many municipal bridge project. In the construction process of this new type of structural system, there are still many problems that need to be solved. In this paper, an example of the use of the bridge project as the background, in view of the extreme temperature conditions of the bridge structure system conversion difficulties, put forward a new Cable-stayed bridge system conversion technology, and through the finite element analysis of the structure of the simulation analysis, the feasibility of the method to verify in theory. The results show that the proposed method can greatly improve the construction progress under the reasonable load of bridge structure and can provide references for other similar projects.