Super-long span suspension bridge
US5784739A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1996 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Oct 2, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01D11/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
As a countermeasure against storms for long span, particularly super-long span suspension bridges with the center span exceeding 2,000 m, there is provided a super-long span suspension bridge which can be improved of its static and dynamic wind resistance performance by applying a mass to a portion of the girder. In a suspension bridge with the center span exceeding 2,000 m, a mass application member capable of temporarily carrying a predetermined amount of additional load is provided on either side of the stiffening girder for a distance equal to 1/3 at the maximum of the center span so that a mass weighing 30% or less of the weight of the girder is temporarily applied in the mass application member in the girder on the windward side when the bridge is subjected to a storm, and cross stays are provided each at a point inward from either end of the center span section at a distance equal to 1/4 to 1/3 of the center span.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.