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Article

Numerical Simulation on Dynamic Behavior of Slab–Column Connections Subjected to Blast Loads

1
Korean Peninsula Infrastructure Special Committee, Korea Institute of Civil Engineering and Building Technology, Goyang-si 10223, Korea
2
Coastal Development and Ocean Energy Research Center, Korea Institute of Ocean Science and Technology, 385 Haeyang-ro, Yeongdo-gu, Busan 49111, Korea
3
Department of Civil and Environmental Engineering, The University of Suwon, Hwaseong-si 18323, Korea
*
Author to whom correspondence should be addressed.
Academic Editors: Lina M. López, Ricardo Castedo and Anastasio P. Santos
Appl. Sci. 2021, 11(16), 7573; https://doi.org/10.3390/app11167573
Received: 23 July 2021 / Revised: 14 August 2021 / Accepted: 15 August 2021 / Published: 18 August 2021
(This article belongs to the Special Issue Blast and Impact Engineering on Structures and Materials)
Although many studies on the blast-resistant performance of structures have focused mainly on single members such as beams and columns, there is little research on the behavior of joints that are subjected to blast loads. In this study, the structural behavior of a slab–column connection subjected to blast load was investigated using a numerical analysis method. LS-DYNA was used as a finite element analysis program, and in order to improve the accuracy of numerical analysis, mesh size, material model, and simulation method of blast load were determined through preliminary analysis. The effect of different restraints of the joints, depending on the position of the columns in the slab, on the blast resistance performance was investigated. As a result, the highly confined slab-interior column connection showed better behavior than other edge and corner columns. The drop panel installed between the lower column and the slab was effective in improving the blast-resistance performance of the slab–column connection. For a more accurate evaluation of blast resistance performance, it was suggested that various evaluation factors such as ductility ratio, reinforcing stress, and concrete fracture area can be considered along with the support rotation, which is an important evaluation factor suggested by many standards. View Full-Text
Keywords: blast loads; slab; column; connections; numerical analysis blast loads; slab; column; connections; numerical analysis
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MDPI and ACS Style

Lim, K.M.; Han, T.H.; Lee, J.H. Numerical Simulation on Dynamic Behavior of Slab–Column Connections Subjected to Blast Loads. Appl. Sci. 2021, 11, 7573. https://doi.org/10.3390/app11167573

AMA Style

Lim KM, Han TH, Lee JH. Numerical Simulation on Dynamic Behavior of Slab–Column Connections Subjected to Blast Loads. Applied Sciences. 2021; 11(16):7573. https://doi.org/10.3390/app11167573

Chicago/Turabian Style

Lim, Kwang M., Taek H. Han, and Joo H. Lee. 2021. "Numerical Simulation on Dynamic Behavior of Slab–Column Connections Subjected to Blast Loads" Applied Sciences 11, no. 16: 7573. https://doi.org/10.3390/app11167573

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