Technical Advances of Temporary Facilities for the Failure Prevention of Large-Span Cantilever Casting Construction of Mountainous Concrete Box-Type Arch Bridges

Figure 9

Principle of temporary short prestressing design for the main arch ring segment and tentative layout of the prestressed tendons for the field test study. T, B denote the top and bottom plates of the arch box-girder, respectively. (a) Force equilibrium of no. k arch ring segment. (b) Diagram of arch ring prestressing. (c) Longitudinally different patterns of prestressed tendons for field test study.

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