Numerical Simulation Study of Progressive Collapse of Reinforced Concrete Frames with Masonry Infill Walls under Blast Loading

Xu, Qinghu; Zhen, Xuezhi; Han, Mengjun; Zhang, Wenkang

doi:10.1155/2022/1781415

Cited by 4 publications

(8 citation statements)

References 28 publications

(30 reference statements)

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“…As scholars have done more comparative experiments on bearing capacities under various loading rates, the work counted dynamic increase factor (DIF) for bearing capacities of RC structural members with variations in strain rates, as shown in Figure 7. Data were taken from [5,8,10,11,14,15,17,19,23,45,47,49,51,52,55,56,64,65,67,74,129]. Due to the non-negligible dynamic effects on the mechanical behaviors of RC structural members, RC structural members exhibit different mechanical properties under static and dynamic loading (i.e., maximum bearing capacity, stiffness, ductility factor and hysteretic behavior).…”

Section: Dynamic Modified Model At Member Levelmentioning

confidence: 99%

Section: Dynamic Modified Model At Member Levelmentioning

confidence: 99%

“…The elastic modulus and the strain, corresponding to the compressive strength of concrete, were also affected by the loading rate [3]. As for structural members consisting of RC materials, such as columns [4][5][6][7], beams [8][9][10][11][12][13][14][15], shear walls [16][17][18][19] and joints [20][21][22][23][24], changes in mechanical behaviors and failure patterns were observed for specimens under various loading rates, namely the dynamic effect at the member level. Different damage phenomena of RC structural research area, several attempts have been made by scholars to establish dynamic modified models to consider dynamic effects at the member level, based on either experimental or numerical results [4,33,34].…”

Section: Introductionmentioning

confidence: 99%

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Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Gao

et al. 2023

Buildings

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In this paper, research on dynamic behaviors of RC structural members was reviewed using experimental, theoretical and numerical perspectives. First, in a basic overview, measurement methods, main conclusions and current limitations of available dynamic loading tests were presented. Then, theoretical studies on the dynamic constitutive models of RC materials, the dynamic increase factor (DIF) model for concrete and reinforced steel and proposed modified models of dynamic behavior parameters at the structural member level were summarized. Finally, the available modeling approach and method for incorporating dynamic effects in numerical simulations of RC structures were reviewed. Moreover, the work involved a brief introduction to a dynamic hysteretic model established using experimental data, which was designed to provide an alternative approach to the commonly-used DIF method for considering these dynamic effects. This paper, therefore, aimed to provide a valuable reference for experimental studies and numerical simulations on the dynamic behaviors of RC structures—while also putting forward issues that need to be addressed by future work.

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Section: Dynamic Modified Model At Member Levelmentioning

confidence: 99%

Section: Dynamic Modified Model At Member Levelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Gao

et al. 2023

Buildings

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“…The consistent research findings are concluded that as the loading rate increases, both the tensile strength and compressive strength of concrete, the yield strength and ultimate strength of reinforcement are magnified, and the elastic modulus and the strain corresponding to the compressive strength of concrete are also affected by the loading rate [2]. As for structural members consisting of RC materials, such as columns [3][4][5][6], beams [7][8][9][10][11][12][13][14], shear walls [15][16][17][18][19] and joints [20][21][22][23][24][25], changes in mechanical behaviors to different degrees are observed for specimens under various loading rates, namely the dynamic effect at the member level. Different failure patterns of RC structural members could be observed in seismic hazards, as shown in Figure 2.…”

Section: Introductionmentioning

confidence: 99%

Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Li¹,

Gao²,

Li³

et al. 2023

Preprint

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In this paper, the research progress on dynamic behaviors of RC structural members is reviewed from experimental, theoretical and numerical perspectives. Firstly, the basic overview, measurement methods, main conclusions and current limitations of available dynamic loading tests are presented. Then the theoretical studies on the dynamic constitutive models of RC materials, the dynamic increase factor (DIF) model for concrete and reinforcing steel and the proposed modified models of dynamic behavior parameter at the structural member level are summarized. Finally, the available modelling approach and the method for incorporating the dynamic effect in numerical simulation of RC structures are reviewed. Moreover, a brief introduction is made to the dynamic hysteretic model established on the experimental data, which provides an alternative approach to consider the dynamic effect beside the commonly used DIF method. This paper provides valuable reference for experimental studies and numerical simulations on the dynamic behaviors of RC structures, and also puts forward some issues that need to be solved in the future research works..

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“…Numerical methods such as the finite element analysis (FEA) and finite difference method (FDM) have been extensively used to analyze the behavior of such structures. FEA is a powerful numerical tool that is widely utilized in structural engineering to investigate the behavior of structures subjected to various loading conditions [1]. The MDOF frames are a type of structural system that is commonly employed in modern buildings and bridges.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis and Parametric Study on Multiple Degrees-of-Freedom Frames

Alaneme,

Bahrami,

Ibe Iro

et al. 2023

Civ Eng J

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The design of multiple degrees-of-freedom frames is critical in civil engineering, as these structures are commonly used in various applications such as buildings, bridges, and industrial structures. In this study, a six-degrees-of-freedom beam-column element stiffness matrix was formulated by superposition of beam and truss elements stiffness matrices and was adapted to statically analyze indeterminate frame structures. The development of a numerical model for the frame structures was achieved using the finite element method in the current study. Also, the investigation of the effects of various parameters such as frame geometries, material properties, and loading conditions was conducted on the internal forces developed in the frame structures. Three different parametric study cases that presented the frame structures with varying geometries and loading conditions were analyzed utilizing this matrix approach for the sake of emphasis and to evaluate the flexibility and adequacy of this formula to analyze the indeterminate frames using the MATLAB software. The analysis method comprised the derivation of the system displacements employing the relationships between the stiffness matrix and fixed end forces as the force vector and taking the attained displacements, which would be transformed to the local coordinates to obtain the member forces. The computed results from the element stiffness matrix approach were further statistically compared with the results achieved from the finite element software (SAP2000) applying the analysis of variance (ANOVA). The statistical results showed a P-value > 0.05, which indicated a good correlation between the compared results and adequate performance for the derived beam-column element matrix formula method. Doi: 10.28991/CEJ-2023-09-07-012 Full Text: PDF

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Numerical Simulation Study of Progressive Collapse of Reinforced Concrete Frames with Masonry Infill Walls under Blast Loading

Cited by 4 publications

References 28 publications

Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Numerical Analysis and Parametric Study on Multiple Degrees-of-Freedom Frames

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