Partially and fully earth-anchored cable-stayed bridges using main-span prestressing unit and method of constructing the same
US8695142B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 21, 2010 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Oct 21, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01D21/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Provided are partially and fully earth-anchored cable-stayed bridges, each of which uses a prestressing unit including anchor units and a prestressing member from deck segments installed at its main span such that the prestressing unit serves as a conventional windproof cable and can simultaneously introduce a tensile stress. Thereby, a magnitude of the maximum compressive stress acting on a cross section of each main-span deck segment is reduced, so that it is possible to reduce a cross-sectional area of each main-span deck segment and thus to ensure economical construction. All or part of the compressive stress generated at the main span can be offset by the tensile stress caused by the prestressing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.