Abstract
Recently, the accidents of collapse in arch bridges under construction have been occured one after another. In result, the safety construction management/control as it ought to be, becomes one of the most important problems for an arch bridge during erection. From the above point of view, we developed a new safety control system for an arch bridge erected by means of the cable erection method, and tried to apply the fail safe design to one of an arch bridge in place of the allowable stress design. In this paper, we give an outline of this system and design, and describe the results of its application to the design and construction of a longspan arch bridge. In addition, it is mentioned the results of 3-dimensional measurements for the arch-rib configurations.
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