Concrete bridge girder support structure and cantilever erection method using same
US4259759A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 1979 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Feb 15, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01D21/065
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A concrete bridge girder support structure for use in a cantilever erection method is disclosed. The support structure comprises an upper shoe for use as a fixture to the girder through a sole plate fixed to the girder at a predetermined position, a lower shoe fixed on a pier and abutment, a movable part(s) disposed between the upper and lower shoes, and a movable plate placed for bridge-axial movement relative to the upper shoe. A concrete bridge girder erection method using such a support structure is also disclosed. The girder having the sole plate fixed thereto at the predetermined position is carried on the movable plate and continuously advanced along the upper shoe up to a predetermined erection position with bridge-axial movement of the movable plate. At the erection position, the sole plate is integrally fixed to the upper shoe of the support structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.