| 摘要 |
PURPOSE:To construct the arch bridge of a long span to be designed with short lengths by paying out central members through base members after the base members containing the central members are erected and the base members are rolled, and by connecting the central members confronted with each other, to each other. CONSTITUTION:Base members 11 containing central members 12 in the base members 11 are respectively erected on both banks. Then, after the base members 11 are rolled, or during the rolling process, the central members 12 contained in the base members 11 are extended, and the central members 12 confronted with each other are connected to each other on center. |
