Seismic Design of Structures by Sequential Quadratic Programming with Trust Region Strategy and Endurance Time Method

The optimal design of structures subjected to seismic loading poses significant challenges due to the presence of high nonlinearity and computational complexity. To address these challenges, this paper presents a novel methodology that combines Sequential Quadratic Programming with Trust-Region stra...

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Bibliographic Details
Published inKSCE journal of civil engineering Vol. 28; no. 11; pp. 5104 - 5115
Main Author Feng, Yue
Format Journal Article
LanguageEnglish
Published Seoul Korean Society of Civil Engineers 01.11.2024
Springer Nature B.V
대한토목학회
Subjects
Civil Engineering
Concrete
Design
Design optimization
Earthquake loads
Endurance
Engineering
Geotechnical Engineering & Applied Earth Sciences
Industrial Pollution Prevention
Nonlinear dynamics
Nonlinear systems
Nonlinearity
Objective function
Quadratic programming
Reinforced concrete
Seismic analysis
Seismic design
Seismic response
Structural Engineering
Structures
Taylor series
토목공학
Endurance time analysis
Sequential quadratic programming
Trust region
Optimization
Seismic
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Summary:The optimal design of structures subjected to seismic loading poses significant challenges due to the presence of high nonlinearity and computational complexity. To address these challenges, this paper presents a novel methodology that combines Sequential Quadratic Programming with Trust-Region strategy (SQP-TR) and Endurance Time Method (ETM). SQP-TR is initially presented as a numerical optimization approach to address optimization problems by linearizing the constraints and approximating the objective function with Taylor expansion, as well as employing the filter method and trust region strategy to ensure convergence and feasibility. A five-story linear frame validates its effectiveness and demonstrates promising outcomes. ETM is successfully implemented as a seismic analysis approach to perform nonlinear time history analyses in order to capture the dynamic input feature of the seismic load and evaluate the nonlinear dynamic behaviors of structures. Its practical application is demonstrated by a nine-story structure with nonlinearity, which shows satisfactory results. Finally, the proposed methodology is applied to optimize a twelve-story three-Dimensional (3D) Reinforced Concrete (RC) nonlinear building under seismic load, and the results demonstrate that the method can accomplish optimal seismic design with high accuracy and efficiency.
ISSN:1226-7988
1976-3808
DOI:10.1007/s12205-024-0306-2