PC斜張橋の斜材張力および主桁プレストレスの最適化に関する研究
1989 年 1989 巻 408 号 p. 31-40
詳細
1989 年 1989 巻 408 号 p. 31-40
In designing a prestressed concrete cable stayed bridge, such important problems like finding the optimal value of cable stay forces and girder prestress as well as the selecting arrangement of stay cable, shape of main girder, etc. has to be overcome.
In this study, a method of optimization considering a combination of the stay cable forces, the girder prestressing, creep and shrinkage of concrete and construction process is developed based on the strain energy criterion proposed by Yamada, Furukawa, et al. And also an optimization system to determine automatically both cable stay forces and girder prestress is developed using a personal computer.
A few prestressed concrete cable stayed bridges on which much data have been published are analyzed to demonstrate the applicability of this system. The results obtained are sufficient to apply in the determination of both the optimal value of cable stay forces and girder prestress of the prestressed concrete cable stayed bridge.
