Experimental Comparison of the Performance and Residual Capacity of CFFT and RC Bridge Columns Subjected to Blasts

Echevarria, Alicia; Zaghi, Arash E.; Chiarito, Vincent P.; Christenson, Richard; Woodson, Stanley C.

doi:10.1061/(asce)be.1943-5592.0000762

Cited by 39 publications

(13 citation statements)

References 28 publications

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“…The deflection of the column is smaller when columns having closely spaced transverse reinforcement subjected to the blast loading. Echevarria et al [66]. The resistance offered by the column leads towards the damage in a column against the blast loading, Kravchenko et al [67] also found that the steel ratio has a considerable effect on the column resistance to the blast impact.…”

Section: Literature On the Numerical Studiesmentioning

confidence: 99%

A review on the performance of reinforced concrete structures under blast loading

Senthil¹,

Gupta²,

Rupali³

et al. 2020

JSEAM

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An explosion on the elevated structures caused by terrorist activities or manmade events can induce significant deformations in the Civil Engineering structures. Therefore, it is necessary to review the response of the structural behavior such as reinforced concrete slab, reinforced concrete beams, and columns. On the basis of this objective, a detailed literature review is conducted to understand the scope for protecting such structures and the structural behavior under blast loading. Based on the detailed literature survey, the investigations about the behavior of conventional reinforced concrete columns and slab initiated in 2005 however, the behavior of reinforced concrete beam was focused since the year 2010. Also, the literature reveals that the investigations on structural elements using analytical techniques are limited in comparison to experiments and simulations. In addition to that, the response of the structural elements was predicted and the trend was calibrated and fitted logarithmically with the experimental results. The predicted spall diameter in the reinforced concrete slab is 0.95 m corresponding charge weight of 100 kg however the influence of spalling was found to be negligible after the 100 kg of charge weight. The predicted spall length in the reinforced concrete beam is 1.6 m corresponding charge weight of 100 kg and the effect may be negligible after 100 kg of charge weight. The predicted deflection in the reinforced concrete columns is 30 mm corresponding to a peak reflected impulse of 1000 MPa-ms, whereas the deflection was found to be negligible after the 1000 MPa-ms of peak reflected impulse.

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Section: Literature On the Numerical Studiesmentioning

confidence: 99%

A review on the performance of reinforced concrete structures under blast loading

Senthil¹,

Gupta²,

Rupali³

et al. 2020

JSEAM

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“…The presented study stems from recent studies conducted on RC and CFFT bridge columns. Recent studies have proven the CFFT system a viable alternative to conventional RC columns for bridges vulnerable to earthquake and blast hazards [21][22][23][24][25][26][27][28]. Additionally, the CFFT system has shown that it can provide increased corrosion resistance and construction benefits including accelerated construction times and increased workzone safety [26].…”

Section: Open Accessmentioning

confidence: 99%

“…The additional columns shown in this figure were used for blast experiments performed by UConn. The blast experiments are not discussed herein, but detailed information regarding the blast experiments can be found in Echevarria et al [21][22][23]. The steel reinforcement for the columns was placed inside their respective tubes, and spacers were used to maintain clear cover between the steel and column surfaces.…”

Section: Specimen Construction and Materials Propertiesmentioning

confidence: 99%

Residual Axial Capacity Comparison of CFFT and RC Bridge Columns after Fire

Echevarria¹,

Zaghi

Christenson

et al. 2015

Polymers

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Abstract:The fire performance of protected concrete-filled fiber reinforced polymer (FRP) tube (CFFT) and conventional reinforced concrete (RC) bridge columns is studied through two phases of experimental research comprised of fire exposure and residual axial capacity tests. Two one-fifth scale CFFT columns and two one-fifth scale conventional RC columns having similar axial and flexural capacities were subjected to two durations of extreme temperature exposure. The CFFT columns were protected by the Tyfo ® CFP fire protection system during the experiments. Subsequently, the post-fire robustness of the columns was quantified by measuring the residual axial capacity characteristics of each column. The protected CFFT columns exhibited superior axial strength and stiffness retention compared to the RC columns after fire exposure.

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“…e failure of load-bearing columns can result in the progressive collapse of structures. erefore, it is important to improve the reliability of vulnerable columns under blasts to ensure the safety of structures [2,3].…”

Section: Introductionmentioning

confidence: 99%

Improved SDOF Approach to Incorporate the Effects of Axial Loads on the Dynamic Responses of Steel Columns Subjected to Blast Loads

Yan

Huang

2019

Advances in Civil Engineering

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In this paper, a complicated single-degree-of-freedom (SDOF) approach was developed to determine the global response of steel columns under combined axial and blast-induced transverse loads. Nonlinear section and member analyses were incorporated into the suggested SDOF method to account for the complex features of the material behavior, the high strain rate effect, and the column geometry. The SDOF technique was validated through comparisons with available finite element and experimental data, and a good consistency was obtained. Then, the validated SDOF approach was utilized to derive the pressure-impulse curves under various levels of axial loading. The level of the axial load was shown to have a significant influence on the dynamic behavior of a steel column subjected to a blast load.

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Experimental Comparison of the Performance and Residual Capacity of CFFT and RC Bridge Columns Subjected to Blasts

Cited by 39 publications

References 28 publications

A review on the performance of reinforced concrete structures under blast loading

A review on the performance of reinforced concrete structures under blast loading

Residual Axial Capacity Comparison of CFFT and RC Bridge Columns after Fire

Improved SDOF Approach to Incorporate the Effects of Axial Loads on the Dynamic Responses of Steel Columns Subjected to Blast Loads

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