Back to Search
Start Over
Performance-Based Optimization for Strut-Tie Modeling of Structural Concrete
- Source :
- Journal of Structural Engineering. 128:815-823
- Publication Year :
- 2002
- Publisher :
- American Society of Civil Engineers (ASCE), 2002.
-
Abstract
- Conventional trial-and-error methods are not efficient in developing appropriate strut-and-tie models in complex structural concrete members. This paper describes a performance-based optimization ~PBO! technique for automatically producing optimal strut- and-tie models for the design and detailing of structural concrete. The PBO algorithm utilizes the finite element method as a modeling and analytical tool. Developing strut-and-tie models in structural concrete is treated as an optimal topology design problem of continuum structures. The optimal strut-and-tie model that idealizes the load transfer mechanism in cracked structural concrete is generated by gradually removing regions that are ineffective in carrying loads from a structural concrete member based on overall stiffness performance criteria. A performance index is derived for evaluating the performance of strut-and-tie systems in an optimization process. Fundamental concepts underlying the development of strut-and-tie models are introduced. Design examples of a low-rise concrete shearwall with openings and a bridge pier are presented to demonstrate the validity and effectiveness of the PBO technique as a rational and reliable design tool for structural concrete.
- Subjects :
- Pier
Engineering
business.industry
Mechanical Engineering
Design tool
Stiffness
Topology design
Building and Construction
Structural engineering
Performance index
Finite element method
Mechanics of Materials
Transfer mechanism
medicine
Shear wall
General Materials Science
medicine.symptom
business
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 1943541X and 07339445
- Volume :
- 128
- Database :
- OpenAIRE
- Journal :
- Journal of Structural Engineering
- Accession number :
- edsair.doi...........3cb33732154b77f607ba6e5fcdc3a24b