Reinforced concrete structural design optimization: A critical review

Afzal, Muhammad Shekaib; Liu, Yuhan; Cheng, Jack Chin Pang; Gan, Vincent J.L.

doi:10.1016/j.jclepro.2020.120623

Cited by 92 publications

(64 citation statements)

References 168 publications

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“…Besides, it is also found that more articles related to structural performance improvement come from countries that fall in seismically active zones, including the USA, China, and South Korea. This finding suggests that geographical and environmental factors can affect the research directions [10]. In these regions, researchers are probably more motivated to pay attention to improving the structural behavior under dynamic seismic loads.…”

Section: Spatial Trends Of Optimization Objectivesmentioning

confidence: 99%

“…Problem formulation refers to determining the three fundamental components of an optimization problem in the problem search space, namely the design variables, objective function(s), and constraints [10]. When conducting structural optimization, it is presupposed some freedom to change the attributes of the structure.…”

Section: Formulation Of Optimization Problemsmentioning

confidence: 99%

“…In structural optimization with the goal of cost minimization, stress and displacement constraints are usually adopted, and the specific design requirements depend on the regional specifications applied instead of the type of optimization. Some most commonly used regional specifications include the ACI Codes for Concrete, Eurocodes 2, AASHTO, and British Standards [10].…”

Section: Formulation Of Optimization Problemsmentioning

confidence: 99%

“…Concrete based composite materials are most commonly used in buildings and civil engineering infrastructures [9], including plain concrete, reinforced concrete, pre-stressed concrete, etc. [1,10]. Although some civil engineering structures which contain different types of materials, structures that only contain a single type of material are normally considered in terms of structural optimization due to the computational difficulty when considering material distribution of structures.…”

Section: Introductionmentioning

confidence: 99%

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Structural Optimization in Civil Engineering: A Literature Review

Mei

Wang

2021

Buildings

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Since tremendous resources are consumed in the architecture, engineering, and construction (AEC) industry, the sustainability and efficiency in this field have received increasing concern in the past few decades. With the advent and development of computational tools and information technologies, structural optimization based on mathematical computation has become one of the most commonly used methods for the sustainable and efficient design in the field of civil engineering. However, despite the wide attention of researchers, there has not been a critical review of the recent research progresses on structural optimization yet. Therefore, the main objective of this paper is to comprehensively review the previous research on structural optimization, provide a thorough analysis on the optimization objectives and their temporal and spatial trends, optimization process, and summarize the current research limitations and recommendations of future work. The paper first introduces the significance of sustainability and efficiency in the AEC industry as well as the background of this review work. Then, relevant articles are retrieved and selected, followed by a statistical analysis of the selected articles. Thereafter, the selected articles are analyzed regarding the optimization objectives and their temporal and spatial trends. The four major steps in the structural optimization process, including structural analysis and modelling, formulation of optimization problems, optimization techniques, and computational tools and design platforms, are also reviewed and discussed in detail based on the collected articles. Finally, research gaps of the current works and potential directions of future works are proposed. This paper critically reviews the achievements and limitations of the current research on structural optimization, which provide guidelines for future research on structural optimization in the field of civil engineering.

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Section: Spatial Trends Of Optimization Objectivesmentioning

confidence: 99%

Section: Formulation Of Optimization Problemsmentioning

confidence: 99%

Section: Formulation Of Optimization Problemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structural Optimization in Civil Engineering: A Literature Review

Mei

Wang

2021

Buildings

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“…The reinforcement concrete (RC) structure is one of the most commonly used building forms, contributing to the consumption of considerable amounts of material such as cement, concrete, and reinforcing steel, which in turn extensively impacts the built environment and China’s sustainable development agenda [ 4 , 5 , 6 ]. Thus, it is imperative to explore new high-performance structural systems that enhance the utilization rate of structural building materials and improve compliance with the requirements for green buildings [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Behavior of a Two-Way Lightweight Steel–Concrete Composite Slab Voided with Thin-Walled Core Boxes towards Sustainable Construction

et al. 2020

Self Cite

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High-performance engineered structural systems are crucial for sustainable development in the field of construction. In our previous research, a novel steel–concrete composite beam with transverse and longitudinal hidden girders exhibited good flexural behavior and desirable ductility. However, there is a dearth of studies on the flexural response of a steel–concrete composite slab voided with thin-walled core boxes. Therefore, in this study, we investigated the overarching flexural mechanism of the proposed structure when subjected to uniform vertical loads. The experimental detection results illustrated that the deflection value of the composite beam was 95.75% less than the GB/T 50152-2012 recommendation. Numerical results further validated this observation. The recorded data from the strain profile at the mid-span of the frame girder indicated that there was a considerable membrane effect, which delayed the strain growth of rebars, yielding appreciable bearing capacity. Thus, two original approaches to predicting the ultimate load of this novel structure are proposed, considering limit analysis using the upper-bound method and the membrane effect, with the latter closely linked to the experimental results. The findings can promote the extensive application of similar sustainable systems and inspire further advancements in advanced engineering structures.

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An improved evolutionary structure optimization method considering stress minimization and smooth design

Wang,

Tang,

Zhu

et al. 2024

Numerical Meth Engineering

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The design of continuum structures often presents challenges related to stress concentration, which can cause significant structural damage. To address this issue, the current study presents a new stress minimization method that utilizes the Windowed Evolutionary Structural Optimization (WESO) framework. The method aims to improve algorithm stability by optimizing design variables with an intermediate density. The use of a P‐norm stress aggregation method improves the assessment of global stress levels and enhances computational efficiency. Furthermore, a stable element sensitivity formulation, derived from the adjoint sensitivity analysis of the global stress measure, effectively handles the nonlinear stress behavior. Mesh filtering techniques are utilized to convert sensitivity from elements to nodes, and the structural topological solution is represented using the level set function (LSF) based on element‐node sensitivity. This method addresses the singularity issue commonly found in density‐based optimization methods and facilitates the achievement of smooth topological solutions. Through 2D and 3D benchmark designs, the proposed method's feasibility, stability, and superiority are thoroughly demonstrated. A parametric study is conducted to identify the optimal parameter range for the algorithm, leading to the development of a rational method for parameter selection. The optimized topology, with its smooth boundaries, can guide the design of structures without the need for redesign or post‐processing, helping to drive innovation and development in engineering.

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Reinforced concrete structural design optimization: A critical review

Cited by 92 publications

References 168 publications

Structural Optimization in Civil Engineering: A Literature Review

Structural Optimization in Civil Engineering: A Literature Review

Behavior of a Two-Way Lightweight Steel–Concrete Composite Slab Voided with Thin-Walled Core Boxes towards Sustainable Construction

An improved evolutionary structure optimization method considering stress minimization and smooth design

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