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

Applied Sciences

BoYeon Lee¹  DoGuen Yoo²  KwangMo Lim²  JooHa Lee² 

[1] Department of Architecture, The University of Suwon, Gyeonggi-do 18323, Korea;Department of Civil and Environmental Engineering, The University of Suwon, Gyeonggi-do 18323, Korea;

关键词: blast loads;    slab-column joints;    prediction model;    damage level;   

DOI  :  10.3390/app10175837

来源: DOAJ

【 摘 要 】

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/kg^1/3 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.

【 授权许可】

Unknown