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The Effects of Coupling Beam on Lateral Drift of High-rise Buildings

고층건물의 횡변위에 대한 커플링보의 효과

  • Received : 2011.09.29
  • Accepted : 2011.12.13
  • Published : 2011.12.31

Abstract

The effects of coupling beam, which is generally used in high-rise building structure system as shear wall-coupling beam, on the lateral drift of high-rise buildings are studied in this paper. Six different analytical models, which are combination of two inputs, such as concrete strength and wall thickness, are selected and analyzed on lateral drifts with different stiffness of coupling beams. MIDAS GEN was used for analysis. Calculated lateral drifts were compared with allowable limits(H/400~H/500) proposed by standard CEN EC 3/1, in order to analyze the control evaluation of coupling beams. Calculated x-direction displacements were 68~87 percent of allowable limit(H/500). With increase of wall thickness(100mm) and concrete strength(5Mpa), eight to ten percent and four percent of x and y-direction displacement were decreased individually. About three percent of lateral displacement was increased with 20 percent decrease of coupling beam stiffness and additional 20 percent decrease resulted in additional five to eight percent increase.

Keywords

Shear Wall;Coupling Beam;Lateral Drift;Concrete Strength;Wall Thickness;Stiffness Reduction

References

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Acknowledgement

Supported by : 인제대학교