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Study on Evaluating Displacement Tolerance of Sky-bridge in Tall Buildings

고층 스카이브리지의 변위 허용치 산정에 대한 연구

  • Kim, Yun Gon (Department of Architectural Engineering, Daegu University)
  • 김윤곤 (대구대학교 건축공학과)
  • Received : 2020.03.22
  • Accepted : 2020.04.21
  • Published : 2020.04.30

Abstract

The new method for evaluating the displacement tolerance of sky-bridges with pin-roller type supports was proposed considering both return period of phase difference between connected buildings and geometrical characteristics of skybridge. Because displacement tolerance is relative value, which is most affected by the phase difference of the connected buildings, the dynamic response of these building with time history analysis should be evaluated. However, the initial phase could not be specified, so the result of displacement tolerance would be varied with respect to initial value. Thus, the tolerance can be reasonably evaluated SRSS calculation with design displacements based on statistical approach and of each building. In addition, the geometrical characteristics of sky-bridge should be considered because the transverse displacement of sky-bridge span causes the shear deformation of the bridge and longitudinal displacement tolerance cannot release the shear deformation. Therefore, the some pin-end support in sky-bridge should have longitudinal displacement tolerance to accommodate the shear deformation. By resolving this shear deformation, it is possible not only to accommodate transverse displacement, but also to avoid the complicated joint details such as both pot bearing and guided supports with shear key.

Acknowledgement

Supported by : 대구대학교

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