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Applied Sciences
Volume 10
Issue 17
10.3390/app10175837
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Article

Prediction of Damage Level of Slab-Column Joints under Blast Load

by
Kwang Mo Lim
1,
Do Guen Yoo
1,
Bo Yeon Lee
2 and
Joo Ha Lee
1,*
1
Department of Civil and Environmental Engineering, The University of Suwon, Gyeonggi-do 18323, Korea
2
Department of Architecture, The University of Suwon, Gyeonggi-do 18323, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(17), 5837; https://doi.org/10.3390/app10175837
Submission received: 23 July 2020 / Revised: 21 August 2020 / Accepted: 21 August 2020 / Published: 23 August 2020
(This article belongs to the Special Issue Buildings and Structures under Extreme Loads II)
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Abstract

The behavior of a slab-column joint subjected to blast loads was studied by numerical analysis using a general-purpose finite element analysis program, LS-DYNA. Under the explosive load, the joint region known as the stress disturbed zone was defined as a region with a scaled distance of 0.1 m/kg1/3 or less through comparison with ConWep’s empirical formula. Displacement and support rotation according to Trinitrotoluene (TNT) weight and scaled distance were investigated by dividing in and out of the joint region. In addition, fracture volume was newly proposed as an evaluation factor for blast-resistant performance, and it was confirmed that the degree of damage to a member due to blast loads was well represented by the fracture volume. Finally, a prediction equation for the blast-resistant performance of the slab-column joint was proposed, and the reliability and accuracy of the equation were verified through additional numerical analysis.
Keywords: blast loads; slab-column joints; prediction model; damage level blast loads; slab-column joints; prediction model; damage level

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MDPI and ACS Style

Lim, K.M.; Yoo, D.G.; Lee, B.Y.; Lee, J.H. Prediction of Damage Level of Slab-Column Joints under Blast Load. Appl. Sci. 2020, 10, 5837. https://doi.org/10.3390/app10175837

AMA Style

Lim KM, Yoo DG, Lee BY, Lee JH. Prediction of Damage Level of Slab-Column Joints under Blast Load. Applied Sciences. 2020; 10(17):5837. https://doi.org/10.3390/app10175837

Chicago/Turabian Style

Lim, Kwang Mo, Do Guen Yoo, Bo Yeon Lee, and Joo Ha Lee. 2020. "Prediction of Damage Level of Slab-Column Joints under Blast Load" Applied Sciences 10, no. 17: 5837. https://doi.org/10.3390/app10175837

APA Style

Lim, K. M., Yoo, D. G., Lee, B. Y., & Lee, J. H. (2020). Prediction of Damage Level of Slab-Column Joints under Blast Load. Applied Sciences, 10(17), 5837. https://doi.org/10.3390/app10175837

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