Comparative Study on Dynamic Response of Square Section RC-Members and CFRP-Reinforced Members Under Unequal Transverse Impact Loading

Liu, Yanhui; Al-Bukhaiti, Khalil; Zhao, Shichun; Abas, Hussein; Zaidi, Khaled; Xu, Nan; Dong, Angang

doi:10.1007/978-981-16-6932-3_12

Cited by 4 publications

(1 citation statement)

References 15 publications

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“…To adequately analyze the structural safety of RC members under impact loading, both flexural capacity and maximum deflection response must be estimated (Fujikake et al, 2009). Numerous researchers and scholars have explored RC structures under severe loads (e.g., earthquakes, blasts, impact) (AL-Bukhaiti et al, 2021;Dok et al, 2021;Heng et al, 2021;Jia et al, 2021;Liu et al, 2020Liu et al, , 2021Tran et al, 2021;Wang et al, 2021;Yanhui et al, 2022;Zhao et al, 2021).…”

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confidence: 99%

Experimental Study on Existing RC Circular Members Under Unequal Lateral Impact Train Collision

Al-Bukhaiti

Liu

Zhao

et al. 2022

Int J Concr Struct Mater

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With the fast growth of high-speed rail in recent years, derailment has become the first hidden danger of high-speed rail transportation. The high-speed train passes near the station building. So the train may derail and hit the station building. Building a high-speed railway station usually uses a reinforced concrete structure. As a result of high impact energy on the impact body, the reinforced concrete (RC) member may fail; the impact point is near the member's foot; the structural member's constraint can be considered fixed support. This paper investigates the dynamic behavior of four types of circular reinforced concrete members under unequal lateral impact loads. The RC member's failure mechanism and dynamic response addressed the significance of unequal lateral impact load. The usual circular reinforced concrete members are used as the model to perform the drop-weight impact test. The specimens' crack pattern, failure mechanism, impact, deflection, and strain time–history curves are obtained. Findings show that between the impact point and the adjacent support, shear fractures occur that fail in shear mode. Shear cracks are based on impact velocity, longitudinal reinforcement ratio, and stirrup ratio. One type is more destructive to members and nodes. A shear fracture occurs when a longitudinal reinforcement fractures towards the closer support. The effects of impact velocity, longitudinal reinforcement ratio, and stirrup ratio on the dynamic impact response are studied. The experimental results may help improve structural member impact resistance. The critical section (right side) computed the static shear resistance using shear force, whereas the maximum external load resistance determines static bending moment resistance. Understanding how circular members fail to be subjected to unequal lateral impact loads provides insight into circular RC members' impact design and damage evaluation.

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confidence: 99%

Experimental Study on Existing RC Circular Members Under Unequal Lateral Impact Train Collision

Al-Bukhaiti

Liu

Zhao

et al. 2022

Int J Concr Struct Mater

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Effect of Cross-Section Shape on RC Specimen’s Behavior Under Asymmetrical Impact Loading

Al-Bukhaiti

Liu

Zhao

et al. 2023

Lecture Notes in Civil Engineering

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By applying asymmetrical lateral impact forces on RC specimens, the specimens’ cross-sectional shape is analyzed. The effectiveness of the RC specimens’ resistance to impact was examined using a drop hammer. Performing research on the factors that led to the failure of various RC specimen shapes and the dynamic responses they exhibited. In the experiment, eight circular and square specimens were used. Includes the method of failure, the impact force, and the deflection time history. The findings point to shear fractures between the point of impact and the adjacent support. The right side of the impact point has suffered significant damage, and the shear tests on all specimens failed. The peak impact force that square specimens can bear may be greater than circular ones. Protecting the concrete core and reducing maximum deflection are benefits of using a square specimen. When the ratio of stirrups is raised, there is only a little variation in the square specimen’s damage range. This may cause a slight reduction in damage, but it is not significant. The plateau force of a circular specimen can be increased, but only a little. An increase in the stirrup ratio may increase energy use.

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Failure mechanism and static bearing capacity on circular RC members under asymmetrical lateral impact train collision

et al. 2023

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Comparative Study on Dynamic Response of Square Section RC-Members and CFRP-Reinforced Members Under Unequal Transverse Impact Loading

Cited by 4 publications

References 15 publications

Experimental Study on Existing RC Circular Members Under Unequal Lateral Impact Train Collision

Experimental Study on Existing RC Circular Members Under Unequal Lateral Impact Train Collision

Effect of Cross-Section Shape on RC Specimen’s Behavior Under Asymmetrical Impact Loading

Failure mechanism and static bearing capacity on circular RC members under asymmetrical lateral impact train collision

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