Nonlinear ABAQUS Simulations for Notched Concrete Beams

Tawfik, Ahmed Bahgat; Mahfouz, Sameh Youssef; Taher, Salah El‐Din F.

doi:10.3390/ma14237349

Cited by 11 publications

(4 citation statements)

References 37 publications

(63 reference statements)

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“…Then, structural analysis is performed. The required steel reinforcement is then calculated to enhance the mechanical performance of structural elements such as ductility, tensile strength, and creep resistance [ 2 , 3 , 4 , 5 , 6 , 7 ]. Finally, the ultimate limit state and serviceability limit state requirements provided by design codes are checked [ 8 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Reinforced Concrete Materials in Construction

2022

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The structural design process is iterative and involves many design parameters. Thus, this paper presents a controlled framework for selecting the adequate structural floor system for reinforced concrete buildings and efficiently utilizing the corresponding construction materials. Optimization was performed using an evolutionary algorithm to minimize the total construction cost, considering the costs of concrete, steel reinforcement, formwork, and labor. In the problem formulation, the characteristic compressive strength of concrete was treated as a design variable because it affects the mechanical performance of concrete. The design variables included the column spacings, concrete dimensions, and steel reinforcement of different structural components. The constraints reflected the Egyptian code of practice provisions. Because the choice of the structural floor system affects the design details, three systems were considered: solid slabs, flat slabs with drop panels, and flat slabs without drop panels. Two benchmark examples were presented, and the optimal design results of the structural floor systems were compared. The solid slab system had the lowest construction cost among the three structural floor systems. Comparative diagrams were developed to investigate the distribution of construction costs of each floor system. The results revealed that an adequate choice of design variables could save up to 17% of the building’s total construction cost.

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Section: Introductionmentioning

confidence: 99%

Optimal Design of Reinforced Concrete Materials in Construction

2022

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“…The construction costs of materials are important issues in the structural design of reinforced concrete (RC) structures [1][2][3]. Concrete and steel reinforcement are the main factors affecting direct construction costs [4]. Therefore, it is favorable to consider lighter RC structural components while still meeting the design provisions imposed by the standards and codes [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effects of Concrete Grades and Column Spacings on the Optimal Design of Reinforced Concrete Buildings

Rady

Mahfouz

2022

Materials

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This paper investigates the effects of concrete grades and column spacings on the optimal design of reinforced concrete (RC) buildings. To this end, cost design optimization was performed for buildings with three different floor systems: flat plates (FS), flat slabs with drop panels (FSDP), and solid slabs (SS). The evolutionary method provided by the Excel solver was used as the optimization algorithm because it can deal with the complex nature of structural design problems. The objective function was the total construction cost of the building, including the costs of concrete, reinforcement bars, labor, and formwork, while still fulfilling the constraints of the Egyptian code of practice (ECP-18). The applicability of the presented algorithm was investigated in a design example, where the tuning of the evolutionary algorithm control parameters was sought, and the best parameters were investigated. Two case studies were employed to study the impacts of changing the column spacing and concrete grades on the optimal cost for each floor system. The results showed that low concrete grades, (i.e., characteristic strength up to 40 MPa) and column spacings up to 5 m are preferred in terms of direct construction costs for low-rise RC residential buildings.

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“…Concrete damage simulation predominantly employs methodologies, such as CIT, VCCT, XFEM [27][28][29], and the damage mechanics-based CDP model [30]. Given our emphasis on macroscopic effects on the overarching bridge structure, local crack propagation was not a component of this study.…”

Section: Initial Damage Simulation Approachmentioning

confidence: 99%

Simulation of Test Arch Based on Concrete Damage Plasticity Model and Damage Evolution Analysis

Tian,

Cai,

Shi

et al. 2023

Applied Sciences

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In light of the limited research on latent damages during the construction of large-span suspension arches, this study introduced a method to simulate structural damage utilizing random porosity. Initially, based on data from real-world engineering projects, the most susceptible areas within the arch structure were pinpointed. Subsequently, multiple test arch simulation models were constructed. Employing Python, commands for random porosity were implemented within ABAQUS and distinct mesh modules were devised to depict structures under varying degrees of damage. The current investigation delved into the structural responses of these susceptible areas under different damage rates, shedding light on damage progression patterns. Notably, our findings demonstrated that concealed damages on the top plate of the arch foot profoundly influenced structural integrity, whereas damages at the arch hance were comparatively minimal and predominantly manifest at the arch base. The pronounced localized damage at both the arch base and hance initiated and intensified at sectional corners, necessitating enhanced anti-crack measures in these regions. Moreover, depending on the stresses of the arch structure, diverse reinforcement strategies could be employed, optimizing the balance between load-bearing efficiency and cost considerations.

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Nonlinear ABAQUS Simulations for Notched Concrete Beams

Cited by 11 publications

References 37 publications

Optimal Design of Reinforced Concrete Materials in Construction

Optimal Design of Reinforced Concrete Materials in Construction

Effects of Concrete Grades and Column Spacings on the Optimal Design of Reinforced Concrete Buildings

Simulation of Test Arch Based on Concrete Damage Plasticity Model and Damage Evolution Analysis

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