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Effect of Plan Irregularity and Beam Discontinuity on Structural Performances of Buildings under Lateral Loadings

  • Islam, Md. Rajibul (Department of Civil and Environmental Engineering, Kongju National University) ;
  • Chakraborty, Sudipta (Department of Civil and Environmental Engineering, Kongju National University) ;
  • Kim, Dookie (Department of Civil and Environmental Engineering, Kongju National University)
  • Received : 2022.04.23
  • Accepted : 2022.06.02
  • Published : 2022.06.30

Abstract

Irregularities in the structure are crucial factors in screening structural vulnerability under extreme loadings. Numerical analyses were carried out considering wind and seismic loadings for four structures with discrete irregularity: continuous and discontinuous beams with varied story levels, and L-shaped irregular buildings. Structural responses such as maximum displacements, bending moments, axial forces, torsions, and story drifts are evaluated as per the criteria and limits defined by ACI 318. The outcomes indicate that the frame system with beam discontinuity on the upper half of the height exhibits the best structural performance. The results also indicate that the asymmetrical design of the L-shaped model makes it more susceptible to damage when subjected to strong lateral loading conditions.

Keywords

Acknowledgement

This research was supported by Underground City of The Future program funded by the Ministry of Science and ICT.

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