Experimental investigation and improved FE modeling of axially-loaded circular RC columns under lateral impact loading

Liu, Bin; Fan, Wei; Guo, Wei; Chen, Baisheng; Liu, Rong

doi:10.1016/j.engstruct.2017.09.009

Cited by 126 publications

(35 citation statements)

References 22 publications

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“…The increase of the shear damages and also the increase of the energy transferred to test specimen have increased the acceleration and the displacement values, which are measured from the RC column. These effects of the shear reinforcement ratio on the impact behavior of the RC column, which is determined as a result of the experimental study conducted, have been in good agreement with the results obtained from the experimental and analytical studies that exist in the literature …”

Section: Resultssupporting

confidence: 87%

“…Under the lateral impact load with same input energy level, the increases of moment capacity, the strength, and also stiffness level due to the increase of the applied axial load reduced the maximum and residual displacement values measured from the column. Similar tendency for axially‐loaded RC columns subjected to impact or blast load has been demonstrated in a considerable number of the analytical and experimental studies presented in the literature . However, the increase of the applied axial load to the level of balanced axial load value reduced the ductility of the column and also increased the P−Δ effect.…”

Section: Resultssupporting

confidence: 78%

“…Therefore, the residual displacements of Specimen‐8, Specimen‐15, and Specimen‐16, which are subjected to the axial load of 60 kN, have increased with the increase of the applied axial load. The results supporting this tendency have been also included in other studies in the literature . Specimen‐12 which has the greater shear reinforcement spacing is one of RC column that has been tested under the higher impact energy of 1.236 kJ.…”

Section: Resultsmentioning

confidence: 89%

“…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%

“…In this experimental study, the effect of shear reinforcement ratio, column support conditions, impact velocity on impact behavior of RC columns were determined. Liu et al, both experimentally and analytically investigated the dynamic response of axially‐loaded circular RC columns under the effect of the impact load. The role of axial load level, longitudinal reinforcement ratio, the volumetric stirrup ratio of spiral reinforcement, and input impact energy in impact behavior of RC columns were examined.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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: Resultssupporting

confidence: 87%

Section: Resultssupporting

confidence: 78%

Section: Resultsmentioning

confidence: 89%

Section: Experimental Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Investigation of impact behavior of reinforced concrete beam to column connection strengthened with carbon fiber‐reinforced polymer strips

Kaya

Aras

Yılmaz

et al. 2021

Structural Concrete

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Reinforced concrete (RC) members may expose to impulsive dynamic loads due to the reasons such as the explosions occurring in the interior or exterior part of them, rockfall, the vehicle crash to the bridges, the collision of masses with the effects of floods and landslide. Many studies have investigated the effects of impulsive dynamic loads on the beam, column, and slab RC structural elements have been investigated in the literature. However, the authors have not encountered any study focused on the impact behavior of beam to column connections of the frames constructing the bearing system of reinforced concrete structures. Therefore, an experimental study has been planned to investigate RC beam impact behavior to column connections strengthened with carbon fiber‐reinforced polymer (CFRP) strips. The concrete compressive strength, shear reinforcement spacing, CFRP strip spacing, and input impact energy applied to test specimens were taken as experimental variables. The time histories of impact load acting on test specimens, accelerations, displacements, and the strains measured from CFRP strips have been recorded in experiments. The experimental variables' effect on dynamic responses of RC beam to column connections strengthened with CFRP strips subjected to impact load has been interpreted in detail. The study's scope and improved numerical analysis procedure have also been introduced to verify experimental results. Good agreement between numerical and experimental results demonstrated that the presented numerical procedures could be safely used for evaluation of impact behavior of RC beam to column connections strengthened with CFRP strips.

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

Liu

Al-Bukhaiti

Zhao

et al. 2022

Lecture Notes in Civil Engineering

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Experimental investigation and improved FE modeling of axially-loaded circular RC columns under lateral impact loading

Cited by 126 publications

References 22 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

Investigation of impact behavior of reinforced concrete beam to column connection strengthened with carbon fiber‐reinforced polymer strips

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

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