Title:
Strengthening Existing Structures With Post-Tensioning
Author(s):
Miroslav F. Vejvoda
Publication:
Concrete International
Volume:
14
Issue:
9
Appears on pages(s):
38-43
Keywords:
beams (supports); cantilever beams; columns (supports); deterioration; external prestressing; post-tensioning; prestressing; prestressing steels; General
DOI:
Date:
9/1/1992
Abstract:
There is a great demand for strengthening of existing structures. The two main reasons for strengthening are: repairs due to a deficiency, and increase of strength. Post-tensioning (PT) is the most efficient and the most versatile method of strengthening of existing structures. Its flexibility and adaptability to the particular requirements of a project are immense. It seems that only the designer's imagination and creativity limit the use of PT for repairs. In most cases, the PT strengthening requires minimum demolition and has only minor impact on the overall structure. This results in very reasonable costs, considering that many cases provide a life extension beyond the original life span of the structure.