Title:
Evaluataing and strengthening of structural concrete using strut-and-tie models
Author(s):
Keith Kesner and Randall W. Poston
Publication:
Concrete International
Volume:
22
Issue:
11
Appears on pages(s):
48-54
Keywords:
DOI:
Date:
11/1/2000
Abstract:
During the past several years there has been a gradual movement in both the ACI and AASHTO codes towards the use of strut-and-tie modeling techniques in the design of structural concrete members. This is due to the more rational nature of the strut and tie methods. Not only are these methods useful for designing structural concrete for new construction, strut-and-tie methods are also extremely valuable tools in the analysis and design of strengthening measures for concrete structures. This article describes how strut-and-tie models have been used in evaluating both the capacity of structural members and in the design of strengthening measures. The resulting retrofits represent structurally efficient and cost-effective methods of strengthening. The case studies are from bridge applications, including structures with both mild and prestressed reinforcement.