Numerical Study on Dynamic Response of Reinforced Concrete Columns under Low-speed Horizontal Impact Loading

Cai, Jianguo; Ye, Jiabin; Wang, Yongqi; Chen, Qingjun

doi:10.1016/j.proeng.2017.11.085

Cited by 15 publications

(8 citation statements)

References 2 publications

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“…Cai et al 35 used ABAQUS to simulate the dynamic response of 7 reinforced concrete members with a section size of 150 mm × 150 mm under low-speed horizontal impact loads. The authors studied the effect of impact mass and velocity on the failure mode of members.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on existing RC circular section members under unequal impact collision

Liu

Al-Bukhaiti

Zhao

et al. 2022

Sci Rep

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Traffic accidents and derailed train-related incidents have occurred more often than ever in recent years, resulting in some economic damage and casualties. Reinforced concrete (RC) constructions often involve derailed train and vehicle accidents. Rarely are such side collisions studied in previous studies. To do this, high-fidelity simulation-based finite-element (FE) models are created in this paper to accurately simulate the collision of circular RC members with a derailed train. The reinforced concrete member structure is common in high-speed railway stations. The impact energy of the impact body is significant, causing structural member failure. It analyses the dynamic behavior of reinforced concrete members under unequal span impact loads. Numerical implementations of impact issues are discussed from the perspective of geometric, contact, and material properties. The reliability and precision of the ABAQUS code to solve impact issues are verified by comparing failure modes, impact, and deflection time history experimental outputs. By analysing the impact response characteristics, used the control variables to study the failure process and mode (including the characteristics of impact and reaction forces, deflection time history curve, impact force–deflection curve, and bearing reaction force–deflection curve). The reinforcement ratio, impact velocity, concrete strength, and slenderness ratio significantly affect shear crack pattern and development. Changes in impact velocity and slenderness ratio also affect member failure modes.

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Section: Introductionmentioning

confidence: 99%

Numerical study on existing RC circular section members under unequal impact collision

Liu

Al-Bukhaiti

Zhao

et al. 2022

Sci Rep

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“…In recent years, dynamic responses of reinforced concrete (RC) members under impact have drawn much more attention. Some researchers have used the drop hammer device or the lateral impact device to carry out impact tests on reinforced concrete members (Fujikake et al, 2009;Sha and Hao, 2013;Zhao et al, 2017;Ye et al, 2021), and other researchers have used numerical simulation methods to carry out impact analysis on reinforced concrete members (Cai et al, 2017;Saleh et al, 2019;He et al, 2020;Tran et al, 2021). Several impact tests have primarily been performed to study the dynamic responses of RC beams under impact.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on the Dynamic Responses and Failure Criterion of RC Beam Under Impact

Guo

Jiang

et al. 2022

Front. Mater.

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During the period of service, the infrastructure is subjected to various forms of impact. To investigate the impact responses of a reinforced concrete (RC) beam, a numerical model of the RC beam under impact was developed by the finite element package LS-DYNA in this study. The numerical model was verified by using the drop hammer test on the RC beam. Using the numerical model, the midspan displacement of the RC beam is analyzed under the interaction of impact mass and impact velocity. The results show that the response surface of midspan displacement can be fitted as a binary power function of impact mass and impact velocity. The midspan displacement under various impact conditions with equal impulse or equal impact energy is different. Within the scope of a low-speed impact, the midspan displacement decreases with an increase in the impact mass under the equal impulse, while it increases with an increase in the impact mass under the equal impact energy. In addition, the impact failure of the RC beam is judged by the deformation criterion. The threshold value of the ductility coefficient is recommended to be set as 15 in the impact-resistant design for RC beams in civil engineering structures within the scope of a low-speed impact.

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“…Fan et al [10] proposed numerically predicting efficiently the flexural and shear capacities of RC beams and columns subjected to low impact loading. Although these and other previous researchers [11,18,19] carried out experimental tests and numerical simulations of RC columns subjected to impact loads, their studies mainly focused on single impact with low impact velocity. From the literature, it is observed that limited studies were conducted to evaluate the impact performance of the BRC column under repeated impact load.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Bundled RC Column under Impact Load

Abay

Aure

2021

Advances in Civil Engineering

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Dynamic impact load has an extensive application area in civil engineering, including highway, military, and marine structures. Many researchers have studied the performance of reinforced concrete (RC) columns under impact load. However, very limited work has been conducted on the effect of bundle reinforced concrete (BRC) columns subjected to lateral impact load. In this study, to examine the behavior of RC columns under impact load, numerical simulations of one with normal reinforcement distribution and three different bundles of reinforced concrete column specimens have been conducted using an explicit finite element (FE) analysis. In addition to the bundle reinforcement distribution, the parameters considered in the study are impact scenarios, impact velocity, pure axial load, and impact locations. From the numerical analysis, it has been found that bundling of longitudinal reinforcement does not only improve the impact capacity but also stabilizes the fluctuating response of impacted reinforced concrete columns. Both peak impact force and maximum lateral displacements of impacted BRC columns increase with increasing initial impact velocity. The numerical results also show that pure axial load slightly improved the impact capacity of the BRC columns. Finally, while the global failure of the RC column governs the response of repeatedly impacted BRC columns, failure characteristics of the single impacted columns are associated with local concrete damage at the impact zone.

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Numerical Study on Dynamic Response of Reinforced Concrete Columns under Low-speed Horizontal Impact Loading

Cited by 15 publications

References 2 publications

Numerical study on existing RC circular section members under unequal impact collision

Numerical study on existing RC circular section members under unequal impact collision

Numerical Investigation on the Dynamic Responses and Failure Criterion of RC Beam Under Impact

Numerical Investigation of Bundled RC Column under Impact Load

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