Post-tensioning apparatus and method
US5939003A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04C5/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A post-tensioning apparatus and method including first and second body sections interconnected by an intermediate anchor head. Each body section has an end anchor head on an end opposite the intermediate anchor head and includes a tendon with a pair of strands adapted for being tensioned between the intermediate anchor head and the corresponding end anchor head of each body section. Each pair of strands is encapsulated between the intermediate anchor head and each corresponding end anchor head of each body section in a mechanically interlocked duct adapted to receive a bonding agent after tensioning of the strands. A passage is provided proximate the end anchor head of the first body section and provides a passage for insertion of bonding agent, preferably in the form of grout, into the duct of the first body section. Grout can be injected through the passage proximate the end anchor head of the first body section such that the grout can enter and fill the duct of the first body section. A tube provides a passage for grout to pass from the duct of the first body section to the duct of the second body section and around the intermediate anchor head. The ducts of both body sections c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.