6533b828fe1ef96bd12882ed
RESEARCH PRODUCT
OPTIMUM DESIGN OF REINFORCED CONCRETE STRUCTURES UNDER VARIABLE LOADINGS
C. PolizzottoSanti Rizzosubject
Optimal designEngineeringControl and OptimizationCritical sectionbusiness.industryApplied MathematicsPortal frameStructural engineeringManagement Science and Operations ResearchIndustrial and Manufacturing EngineeringComputer Science ApplicationsShakedownVariable (computer science)Simple (abstract algebra)Limit (mathematics)Ductilitybusinessdescription
Abstract This paper presents a method for optimal design of reinforced concrete (RC) structures, subjected to quasi-static variable loads and accounting for cross-sections limited ductility requirements. It consists of a very simple refinement procedure to be applied in the classical Optimal Shakedown Design, (OSD), which leads to a strengthened structure satisfying the requisite that the actual plastic relative rotations, developed at a specified set of critical sections as a result of a variable repeated loading program, do not exceed given upper limits. This strengthened design is a safe but not strictly optimal design and is obtained using the simple rule that the steel reinforcement area at every critical section of the classical OSD must be increased by an amount which is inversely proportional to the correspondent relative rotation upper limit. A few examples illustrate the easiness of such a refinement procedure.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1987-07-01 | Engineering Optimization |