Risk-Based Multiobjective Optimal Seismic Design for RC Piers Using the Response Surface Method and NSGA-II
| Autor: | Guquan Song, Yufeng Gai, Hu Sicong, Huang Zheng, Yixuan Zou |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Optimal design
Earthquake engineering Article Subject Computer science business.industry ComputingMethodologies_SIMULATIONANDMODELING Probabilistic logic Sorting Box girder 020101 civil engineering 02 engineering and technology Structural engineering Engineering (General). Civil engineering (General) 01 natural sciences 0201 civil engineering Seismic analysis 010101 applied mathematics Genetic algorithm 0101 mathematics Seismic risk TA1-2040 business Civil and Structural Engineering |
| Zdroj: | Advances in Civil Engineering, Vol 2021 (2021) |
| ISSN: | 1687-8086 |
| DOI: | 10.1155/2021/8852203 |
| Popis: | In this paper, a risk-based multiobjective optimal seismic design method for reinforced concrete (RC) piers is proposed. This method is used to determine the size and reinforcement ratios of piers to minimize the seismic risk of bridge systems and the construction cost of piers. The Pacific Earthquake Engineering Research- (PEER-) based probabilistic seismic risk assessment approach and the response surface method (RSM) are adopted to develop the seismic risk response surface model, which represents the relationship between the design parameters of piers and the seismic risk of bridge systems. The Pareto optimal solutions of piers are determined by applying an improved version of the nondominated sorting genetic algorithm (NSGA-II). As a case study, the proposed optimal seismic design method is applied to a continuous concrete box girder bridge. The optimal design schemes of piers according to two strategies are determined from the Pareto optimal solutions. The results show that the seismic risk response surface model can be used to accurately describe the relationship between the design parameters of piers and the seismic risk of bridge systems. The case study demonstrates the effectiveness of the proposed optimal seismic design method. The analysis of the Pareto optimal solutions allows designers to more rationally conduct the seismic design of piers. |
| Databáze: | OpenAIRE |
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