Optimal Design of Steel-Concrete Composite I-girder Bridges Using Three Meta-Heuristic Algorithms

Kaveh, A.; Zarandi, Mohammad Mahdi Motesadi

doi:10.3311/ppci.12769

Cited by 9 publications

(8 citation statements)

References 35 publications

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“…Rempling et al [96] propose a set-based parametric design [97,98] applied to SCCB optimization. Kaveh et al applied and compared different algorithms to composite bridges in their studies successfully [99,100]. e optimization techniques are summarized in Table 2.…”

Section: Optimizationmentioning

confidence: 99%

Steel‐Concrete Composite Bridges: Design, Life Cycle Assessment, Maintenance, and Decision‐Making

Martí

2020

Advances in Civil Engineering

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Steel-concrete composite bridges are used as an alternative to concrete bridges because of their ability to adapt their geometry to design constraints and the possibility of reusing some of the materials in the structure. In this review, we report the research carried out on the design, behavior, optimization, construction processes, maintenance, impact assessment, and decision-making techniques of composite bridges in order to arrive at a complete design approach. In addition to a qualitative analysis, a multivariate analysis is used to identify knowledge gaps related to bridge design and to detect trends in research. An additional objective is to make visible the gaps in the sustainable design of composite steel-concrete bridges, which allows us to focus on future research studies. The results of this work show how researchers have concentrated their studies on the preliminary design of bridges with a mainly economic approach, while at a global level, concern is directed towards the search for sustainable solutions. It is found that life cycle impact assessment and decision-making strategies allow bridge managers to improve decision-making, particularly at the end of the life cycle of composite bridges.

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Section: Optimizationmentioning

confidence: 99%

Steel‐Concrete Composite Bridges: Design, Life Cycle Assessment, Maintenance, and Decision‐Making

Martí

2020

Advances in Civil Engineering

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“…Therefore, the effect of the outrigger position on seismic demand is determined to find the optimal position. Different optimization methods can be used in solving engineering problems [57][58][59][60][61][62][63].…”

Section: Dynamic Analysismentioning

confidence: 99%

Optimal Location of Energy Dissipation Outrigger in High-rise Building Considering Nonlinear Soil-structure Interaction Effects

Tavakoli¹,

Kamgar

Rahgozar

2020

Period. Polytech. Civil Eng.

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Buckling-restrained braces (BRBs) emerged to improve the seismic performance of high-rise structures as compared to the ordinary diagonal bracing. In this paper, the seismic performance of braced buildings with the BRB outrigger system is investigated to determine the optimal configuration of BRB outrigger, considering the nonlinear SSI effect. For this purpose, the nonlinear dynamic analysis is carried out on four braced buildings with a BRB outrigger system placed on three different soil types. The outrigger configuration changes from first to the top story to capture the seismic performance of different locations of BRB outrigger. It is observed that the outrigger location affects the seismic performance, which is measured in terms of inter-story drift ratio, story displacement, story shear, and energy dissipation capacity. The results are compared to the fixed base condition buildings, which proves considering SSI, shifts the optimal location to the upper story of the structure. Moreover, the effect of soil’s stiffness on the seismic responses of structures and the optimal BRB outrigger location is investigated. Finally, the merits of BRB outrigger are shown by comparing its seismic performance that of the conventional outrigger, under frequent, basic, and rare earthquakes. The results show that the optimal locations of different 2-D buildings rested on the dense soil, medium soil, and soft clay are obtained at 0.6, 0.65, and 0.7 of the building’s height (H), respectively. Also, the results show that the optimum location of the BRB outrigger system based on the energy dissipation criteria is 0.45H to 0.65H.

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“…Pedro et al [ 6 ] minimized the cost of bridges in steel-concrete composite beams. Kaveh and Zarandi [ 7 ] used three optimization techniques to reduce the costs in the design of steel-concrete composite bridges. Orcesi, Cremona, and Ta [ 8 ] performed a multiobjective optimization, considering the live cycle of the bridge.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization Applied to the Design of Sustainable Pedestrian Bridges

Tres

Piqueras

Medeiros

et al. 2023

IJERPH

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The demand for more sustainable structures has been shown as a growing tendency, and engineers can use optimization techniques to aid in the design and sizing stage, achieving solutions that minimize its cost and environmental and social impacts. In pedestrian bridges, which are subjected to human-induced vibrations, it is also important to ensure the users’ comfort, besides the security verifications. In this context, the objective of this paper is to perform a multi-objective optimization of a steel-concrete composite pedestrian bridge, minimizing cost, carbon dioxide emissions, and vertical acceleration caused by human walking. For this, the Multi-Objective Harmony Search (MOHS) was applied to obtain non-dominated solutions and compose a Pareto Front. Two scenarios were considered with different unit emissions obtained from a life cycle assessment in the literature. Results show that by increasing 15% the structure cost, the vertical acceleration is reduced from 2.5 to 1.0 m/s2. For both scenarios, the optimal ratio for the web height and total span (Le) lies between Le/20 and Le/16. The web height, the concrete strength, and the slab thickness were the design variables with more influence on the value of the vertical acceleration. The Pareto-optimal solutions were considerably sensitive to the parameters varied in each scenario, changing concrete consumption and dimensions of the welded steel I-beam, evidencing the importance of carrying out a sensitivity analysis in optimization problems.

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Optimal Design of Steel-Concrete Composite I-girder Bridges Using Three Meta-Heuristic Algorithms

Cited by 9 publications

References 35 publications

Steel‐Concrete Composite Bridges: Design, Life Cycle Assessment, Maintenance, and Decision‐Making

Steel‐Concrete Composite Bridges: Design, Life Cycle Assessment, Maintenance, and Decision‐Making

Optimal Location of Energy Dissipation Outrigger in High-rise Building Considering Nonlinear Soil-structure Interaction Effects

Multi-Objective Optimization Applied to the Design of Sustainable Pedestrian Bridges

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