Dynamic behaviour of axially-loaded RC columns under horizontal impact loading

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

doi:10.1016/j.engstruct.2018.04.095

Cited by 77 publications

(21 citation statements)

References 21 publications

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“…These scaled dimensions have represented a prototype column with the cross section dimensions of 300 × 300 mm and height of 4,500 mm, which have been used in ground floors of medium‐rise office concrete framed buildings. Similar scale factors, dimensions and also close dimensionless slenderness (height/ cross section dimension) had been used for impact tests previously carried out . Besides, test setup and especially the measurement capacities of sensors had been considered when RC columns were designed.…”

Section: Experimental Studymentioning

confidence: 99%

Experimental investigation of axially loaded reinforced concrete square column subjected to lateral low‐velocity impact loading

Yılmaz

Kıraç

2019

Structural Concrete

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Design of reinforced concrete (RC) columns has been carried out under the effect of static loads and dynamic loads with long return period such as earthquake and wind. However, due to reasons such as the vehicle crash to the bridges of highway or seaway, rock fall, the collision of masses with the effect of flood and landslide, the effect of the blast-induced air-shock wave to buildings that have strategic importance, RC column may subject to sudden dynamic impact loads. For this reason, it is considered that the impact behavior of RC columns, which are highly important vertical load-bearing members for the stability of structures, should be investigated and taken account of the design stage. For this purpose, an experimental study was performed. Sixteen RC square columns with the scale of 1/3 were manufactured and tested under impact load by using drop-weight test setup that was specially designed by authors for impact tests of beam, column, and slab specimens. In the experimental study, the axial load level applied to RC column, input impact energy, and shear reinforcement ratio were taken as variables and with the effect of lateral impact energy applied to RC columns, time-history of impact load acting on columns, the acceleration and the displacement values of columns were measured. The effect of experimental variables on the impact behavior of RC columns was determined and interpreted in detail. It has been demonstrated that axial load level, impact energy, and shear reinforcement ratio have a significant effect on the impact behavior of RC columns. K E Y

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Section: Experimental Studymentioning

confidence: 99%

Experimental investigation of axially loaded reinforced concrete square column subjected to lateral low‐velocity impact loading

Yılmaz

Kıraç

2019

Structural Concrete

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“…Unlike the studies above, the predominance of flexural failure modes on the responses of square RC columns with different cross-sectional dimensions subjected to horizontal impact loads was obtained by Cai et al [25] when the impact loads were applied to the top positions of columns (columns' head). In addition, the influences of the columns' slenderness ratio, impact weight, and velocity parameters were evaluated on the impact responses and damage patterns of the columns.…”

Section: Columns Subjected To Impact Loadsmentioning

confidence: 75%

“…Hoop spacing Significant effects on the column shear capacity Boundary conditions More severe damage for fixed base columns Contact surface Significant effects on the initial impact phase Column Inertia Cai et al [25] Experimental Height of impact location Changing the column failure mode from shear to flexural failures with increasing the height of impact load Column cross-sectional dimension Positive on the magnitude of impact forces Impact weight Positive on the average values of impact forces Impact velocity…”

Section: Beams and Slabs Subjected To Impact Loadsmentioning

confidence: 99%

State-of-the-Art Review on Responses of RC Structures Subjected to Lateral Impact Loads

Zhang

Gholipour

Mousavi

2020

Arch Computat Methods Eng

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Reinforced concrete structures and structural members used in strategic infrastructures such as highway bridges, high-rise buildings, etc. are inherently subjected to lateral impact loads arising from the collision of vehicles, vessels, falling rocks, and rigid objects having different impact geometries, weights, and velocities. Due to the brittle nature of concrete materials, both localized and overall failure modes are very likely to occur in concrete structures under dynamic and impulsive loads. Hence, many attempts have been carried out in the literature to recognize the failure behaviors and to assess the vulnerability of concrete structure under lateral impact loads. This paper presents a comprehensive state-of-the-art review on the responses and failure behaviors of various types of concrete structures and structural members subjected to lateral impact loads based on analytical, numerical, and experimental studies carried out by the previous research works. In addition, the influences of various structural- and load-related parameters on the impact resistance and failure behaviors of different concrete structures under lateral impact loads are reviewed.

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“…In addition, the experimental research can help to analyze the dynamic response of the vehicle impacting the column in more detail and intuitively. In terms of experimental research, Lia et al 6,7 presented experimental works for investigating the collision process, damage and failure mode, dynamic behavior, and impact resistance evaluation method of reinforced concrete (RC) columns under lateral impact loading. The experimental research can get the result which is more consistent with the actual engineering, but it is expensive and difficult to carry out.…”

Section: Introductionmentioning

confidence: 99%

Numerical research on impact performance of bridge columns with aluminum foam protection devices

Zhang

Pan

Xiao

2020

International Journal of Distributed Sensor Networks

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This article presents a new protection device using aluminum foam to enhance the impact resistance of bridge columns. First, the protection device is designed according to the characteristics of aluminum foam material. The geometric configuration and structure of the device are described. Second, the impact performance of bridge column is analyzed, including impact force analysis, damage analysis, and the influence of axial load. Third, three-dimensional solid element models of columns with and without the protection device are developed in order to verify the effect of the protection device. By comparing dynamic responses of vehicle impact on columns with and without the protection device, it is considered that the protection device has certain protection effect: after installing the protective device, the peak value of impact force reduces by 37.5%, the maximum displacement of column top reduces by 23.7%, the maximum stress at column bottom reduces by 51.6%, the maximum stress at column bottom reduces by 51.6%, the maximum acceleration of the vehicle reduces by 40.6%, and 86.84% of the impact energy is absorbed by the protection device. Finally, the devices with different foam thicknesses and porosities are comparatively analyzed to investigate the influence of these design parameters on impact performance. The results show that the increase in the thickness of aluminum foam has positive effects on the protection capability. The protection capability improves with aluminum foam porosity increasing when the porosity is less than 60%.

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Dynamic behaviour of axially-loaded RC columns under horizontal impact loading

Cited by 77 publications

References 21 publications

Experimental investigation of axially loaded reinforced concrete square column subjected to lateral low‐velocity impact loading

Experimental investigation of axially loaded reinforced concrete square column subjected to lateral low‐velocity impact loading

State-of-the-Art Review on Responses of RC Structures Subjected to Lateral Impact Loads

Numerical research on impact performance of bridge columns with aluminum foam protection devices

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