| Title |
Study on Evaluating Displacement Tolerance of Sky-bridge in Tall Buildings |
| DOI |
https://doi.org/10.5659/JAIK_SC.2020.36.4.135 |
| Keywords |
skybridge; hinge-roller type support; relative displacement; torsional effect; displacement tolerance |
| 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. |