Approximation approach; Complementary tools; Design basis; Design method; Fib model codes; Field methods; Reinforced concrete structures; Simple++; Stress field; Strut-and-tie model; Civil and Structural Engineering; Building and Construction; Materials Science (all); Mechanics of Materials
Abstract :
[en] The introduction of strut-and-tie models in fib Model Code 1990 as a design basis for discontinuity regions constituted a significant step toward promoting consistent design methods for reinforced concrete structures. In fib Model Code 2010, the scope was broadened through the stress field method that was introduced as a complementary tool. The present article summarizes subsequent evolutions in both methods, which will be incorporated in the upcoming fib Model Code 2020. Besides emphasizing their suitability for the structural design and assessment, their adaptability to the “Levels-of-approximation” approach is also depicted. This article presents the theoretical ground of both methods and looks on their potential for computer-modeling implementation. With this respect, several strategies are presented by discussing their advantages and optimum field of application.
Disciplines :
Civil engineering
Author, co-author :
Lourenço, Miguel Sério; JSJ Ltd, Lisbon, Portugal ; Instituto Politécnico de Setúbal, Setúbal, Portugal
Fernández Ruiz, Miguel ; School of Civil Engineering, Universidad Politécnica de Madrid, Madrid, Spain
Blaauwendraad, Johan; Delft University of Technology, Delft, Netherlands
Bousias, Stathis; Department of Civil Engineering, University of Patras, Patras, Greece
Hoang, Linh Cao; Department of Civil and Mechanical Engineering, Technical University of Denmark, Lyngby, Denmark
Mata-Falcón, Jaime ; Institute of Structural Engineering, ETH, Zurich, Switzerland
Meléndez, Carlos; Esteyco SA, Madrid, Spain
Mihaylov, Boyan ; Université de Liège - ULiège > Département ArGEnCo > Structures en béton
Ferreira, Miguel Pedrosa ; Grupo NOV, Leiria, Portugal
The authors of this article would like to express their gratitude to all members of fib's WP 2.2.4, particularly to Stein Atle Haugerud and Quentin Roubaty, for the fruitful and stimulating conversations held during writing of fib's Bulletin number 100, whose content is the basis of the present manuscript.
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