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独特的悬挂法发展出一种单跨组合桁架桥形式的合理结构。这种结构是将混凝土主梁和钢桁架安装在跨越索上,施工时索水平力传递给临时地锚,完工后通过“体系转换”再将水平力传递给桁架上、下弦杆充当预应力,这种类型的单跨组合桁架桥施工过程中不需要临时支架或脚手架,相对其他桥型开挖工程小,能将施工对环境的破坏降到最低,因此在深谷中建造这种桥既经济、又符合可持续发展理念。
The unique suspension method developed a reasonable structure in the form of a single-span combined truss bridge. In this structure, the concrete girder and the steel truss are installed on the crossover cable, and the horizontal force of the cable is transmitted to the temporary anchor during construction. After completion, the horizontal force is transmitted to the truss through the “system conversion”, the lower chord serves as the prestressing force, This type of single span composite truss bridge does not require temporary brackets or scaffolding during construction and is less damaging to the environment than any other bridge type excavation, so building such a bridge in the deep valleys is economical, In line with the concept of sustainable development.