Apparatus for prestressing concrete floor of inclined shaft wall
US10612241B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2017 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Dec 1, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2103/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for prestressing a concrete floor of an inclined shaft wall includes two end bearing components, a corrugated pipe, a tension bearing rod piece and two anchor heads. The tension bearing rod piece is composed of a left tension bearing rod, a right tension bearing rod, and a loading mechanism. The left tension bearing rod and the right tension bearing rod, are connected integratedly by the loading mechanism, and the tension bearing rod piece passes through the corrugated pipe. The two end bearing components are respectively arranged at the left and right ends of the tension bearing rod piece in a sleeving manner. The two anchor heads respectively lock the left and right end bearing components. Before pouring of the floor of the shaft wall, the loading apparatus is pre-buried. After the strength of floor concrete increases to certain extent, a transverse prepressing stress is applied to the floor concrete through the loading mechanism. Finally, an internal space of the loading apparatus is blocked by grouting, so as to integrate the tension bearing component, the loading apparatus and the like with the floor concrete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.