Optimizing the steel girders in a high strength steel composite bridge

Skoglund, Oskar; Leander, John; Karoumi, Raid

doi:10.1016/j.engstruct.2020.110981

Cited by 21 publications

(14 citation statements)

References 5 publications

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“…Many studies have shown the Genetic Algorithm (GA) optimization technique as a powerful tool to improve the design on structural engineering (Agrawal, Chandwani and Porwal (2013), Kociecki & Adeli (2015), Yldirim & Akcay (2019), Martinelli & Alves (2020), Skoglund, Leander & Karoumi (2020)). The GA was proposed by Holland (1992) based on the Charles Darwin's Theory of Evolution.…”

Section: Engenharia Civilmentioning

confidence: 99%

Optimum design of prestressed steel beams via genetic algorithm

2023

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The objective of this article is to present an optimization problem formulation to reduce the total structural cost of prestressed doubly-symmetric and monosymmetric I-shaped steel simply supported beams with straight tendons. The optimization problem was implemented via MATLAB's native Genetic Algorithm. The validation and evaluation processes adopted two examples from literature. The design method follows the Brazilian standard NBR 8800:2008 for the Ultimate and Serviceability Limit States. The best result was found for a monosymmetric case by up to 20.00% and 25.70%. Saving in material weight and installation of tendons, without exceeding the security limits, was also effective. Furthermore, the results presented an efficient alternative for structural engineering, providing a significant model for similar analyzes.

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Section: Engenharia Civilmentioning

confidence: 99%

Optimum design of prestressed steel beams via genetic algorithm

2023

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“…The ground structure, which is a predetermined big structure with large number of structural components, usually starting point for topology optimization. Excess components are continually removed during the optimization process until the best design with the lowest weight is attained [53]. Vector always used to represent collection of topological variables.…”

Section: Formulation Of Optimization Problemsmentioning

confidence: 99%

Literature review of bridge structure's optimization and it's development over time

Zaheer

Tan

Qamar

2022

Int. J. Simul. Multidisci. Des. Optim.

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The structural development in bridge engineering along with efficiency have got much attention in few decades. Leading to the development, Optimization of structure established on mathematical analysis emerged mostly employed strategies for productive and sustainable design in the bridge engineering. Despite the widespread knowledge, there has yet to be a rigorous examination of recent structural optimization exploration development. Thus, the primary objectives of this paper are to critically review previous structural optimization research, provide a detailed examination of optimization goals and outline recent research field limitations and provide guidelines for future research proposal in the field of bridge engineering structural optimization. This article begins by outlining the relevance of efficiency and sustainability in the bridge construction, as well as the work done required for this review. Suitable papers are gathered and followed by a statistical analysis of the selected publications. Following that, the selected papers are evaluated in terms of the optimization targets as well as their spatial patterns. Structure's optimization four key steps, including modeling, optimization techniques, formulation of optimization concerns and computational tools, are also researched and examined in depth. Finally, research gaps in contemporary works are identified, as well as suggested guidance for future works.

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“…e use of high-strength steel (HSS) materials in construction and bridge engineering can reduce the section size and structural dead weight of components, leading to several advantages such as reduction in the welding seam size and welding workload, decrease in the cost of processing, transportation, construction, and installation of structural components, and creation of a large building usage space [1][2][3][4]. erefore, HSS has always received signi cant attention in the construction and structural industries.…”

Section: Introductionmentioning

confidence: 99%

Local and Global Interactive Buckling Capacity of Thin-Walled Box-Section Members of BS700 High-Strength Steel under Axial Compression

Gao

Xie

et al. 2022

Advances in Materials Science and Engineering

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The local and global buckling capacity of the thin-walled box-section members formed by cold bending of ten BS700 high-strength steel (HSS) specimens are experimentally determined through an axial compression test. The mechanical properties of the materials are evaluated through material performance test, and a material model suitable for finite element analysis is proposed. The initial geometric imperfection of the members is measured, and it is found that the maximum initial deflection can be 1/1000 of the length of the members, as specified in the Chinese code. Based on the test, the ultimate bearing capacity and failure modes of the component with local and global interactive buckling are obtained. Further, a finite element model is established, and the corresponding results are compared with the test results. Furthermore, the test results are compared with those obtained using the existing specifications. The results show that the failure modes of the specimens are primarily local and global buckling failure. The influence of residual stress and initial geometric imperfection is considered in the proposed finite element model. Comparing the ultimate bearing capacity and load-displacement curves with the corresponding test results, it is found that the finite element model can effectively reproduce the test results. By comparing the test results with those obtained based on the steel structure design codes of China, the United States, and Europe, it is found that the test results are all higher than the existing code results, and the Chinese and European codes are relatively conservative with a difference of more than 20%, while the difference between the test results and the American code results is nearly 10%. Therefore, it is necessary to further improve the calculation methods of local and global buckling capacity of thin-walled box-section members of BS700 HSS under axial compression.

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Optimizing the steel girders in a high strength steel composite bridge

Cited by 21 publications

References 5 publications

Optimum design of prestressed steel beams via genetic algorithm

Optimum design of prestressed steel beams via genetic algorithm

Literature review of bridge structure's optimization and it's development over time

Local and Global Interactive Buckling Capacity of Thin-Walled Box-Section Members of BS700 High-Strength Steel under Axial Compression

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