Collision Capacity Evaluation of RC Columns by Impact Simulation and Probabilistic Evaluation

Yi, Na Hyun; Choi, Ji Hun; Kim, Sung Jae; Kim, Jang-Ho Jay

doi:10.3151/jact.13.67

Cited by 13 publications

(4 citation statements)

References 22 publications

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“…Some previous research was developed on impact load including various axial compression ratios. Yi et al 34 used the axial compression ratio of 0.0539 and 0.0686 to study the anti‐impact capacity of the columns; Abdelkarim and ElGawady 35 took the axial compression ratio ranging from 0 to 0.1 when developing parametrical study on the dynamic peak value and equivalent static force caused by the vehicle impact on the columns. Therefore, the axial compression ratio ranging from 0 to 0.1 is studied here to compare the peak value of the load that makes the residual capacity of the columns reach 50% of the initial capacity.…”

Section: Responses Of Columns Under Vehicle Impact Loadmentioning

confidence: 99%

Performance assessment of reinforced concrete columns under vehicle impact load using P‐I diagram

Cao

Shi

et al. 2020

Structural Concrete

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P‐I diagrams are widely used for structures subjected to blast loads. In the same manner, structures subjected to vehicle impact load, such as bridge columns, could potentially take advantages of the P‐I diagram if the dynamic characteristics of vehicle impact load and bridge columns are well considered. In the paper, the performance of bridge columns and hence the use of P‐I diagram is evaluated under vehicle impact load. The main tasks of the paper are (1) to determine the dynamic characteristics of vehicle impact load through finite element method, and three simplified load shapes are obtained including isosceles triangle, right triangle, and rectangular shapes; (2) to investigate structural failure modes under various shear‐bending ratios and impact loads; (3) to establish the damage index based on the residual axial capacity of bridge columns and to obtain P‐I diagrams at different damage levels of bridge columns under vehicle impact load; (4) to parametrically analyze the effects on the impulse asymptotic and the peak load asymptotic of P‐I diagrams, including column diameter, stirrup reinforcement ratio, longitudinal reinforcement ratio, and strength of the concrete. Finally, a simplified calculation method of P‐I diagrams is proposed to evaluate the performance of bridge columns under vehicle impact load.

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Section: Responses Of Columns Under Vehicle Impact Loadmentioning

confidence: 99%

Performance assessment of reinforced concrete columns under vehicle impact load using P‐I diagram

Cao

Shi

et al. 2020

Structural Concrete

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“…In structural systems, Steel Reinforced Concrete (SRC) columns, as the main impact resistant load-bearing components, are widely used in fields such as high safety public buildings, transportation facilities, protective engineering, and military engineering. At present, the dynamic research results of steel reinforced concrete column structures mainly focus on the failure mechanism, mechanical performance indicators, and design calculation methods under earthquake [1][2][3][4] . However, there are significant differences in the material properties between concrete columns and SRC columns, and there are obvious shortcomings in using the impact resistance performance indicators of concrete columns to evaluate the impact resistance performance of SRC columns [5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response Numerical Simulation and Performance Evaluation of SRC Columns Under Lateral Impact

2023

Advances in Frontier Research on Engineering Structures

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Using ANSYS/LS-DYNA finite element analysis software, numerical simulation was conducted on the dynamic response of steel reinforced concrete column under impact loads. The effects of different constraint conditions, impact mass, impact speed, and impact position on the impact resistance performance of SRC columns were studied. The results show that under the constraint of fixed-simple and the same velocity, the closer to the column end, the greater the impact force is; Under the same impact speed, the impact force of the cantilever column is significantly greater than that of the fixed constraint state. Under the action of fixed constraints and the same impact energy, the maximum displacement of the SRC column continuously increases with the increasing impact position. As the impact position continues to increase, the time when the maximum displacement occurs is also continuously delayed. Under the cantilever constraint condition, the maximum displacement of the SRC column is significantly greater than that of the fixed simple constraint state and the fixed-fixed constraint state. The maximum displacement of the SRC cantilever column occurs at the top, while under the fixed-fixed constraint condition, the maximum displacement of the SRC column occurs at the direct impact position. The maximum stress of steel under three constraint states all occur at the instantaneous and direct impact points, and the stress of the column steel rapidly decreases with the increase of SRC column displacement response; Under the action of a small amount of impact energy, the SRC column under cantilever constraint undergoes splitting failure at the impact location as the impact energy increases, and the final failure belongs to brittle failure.

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“…During their service life, RC compression members can also experience extreme dynamic loading conditions such as wind, earthquake, blast, and lateral impact loads [1]. As compared to the static load and other dynamic loads, less attention has been given to assess the dynamic impact load resisting capacities of these structural elements [2].…”

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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Collision Capacity Evaluation of RC Columns by Impact Simulation and Probabilistic Evaluation

Cited by 13 publications

References 22 publications

Performance assessment of reinforced concrete columns under vehicle impact load using P‐I diagram

Performance assessment of reinforced concrete columns under vehicle impact load using P‐I diagram

Dynamic Response Numerical Simulation and Performance Evaluation of SRC Columns Under Lateral Impact

Numerical Investigation of Bundled RC Column under Impact Load

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