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IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints


IASS Symposium 2014

SESSION: General 5: Dynamics and Earthquake Engineering

Optimal placement algorithm of viscous damping walls for the seismic design of tall buildings

< Table of Contents for General 5: Dynamics and Earthquake Engineering
  • Proceedings Name: IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints
  • ISSN: (Electronic Version) 2518-6582
  • Session: General 5: Dynamics and Earthquake Engineering
  • Title: Optimal placement algorithm of viscous damping walls for the seismic design of tall buildings
  • Author(s): Xi ZHAN, Yimin ZHENG, Xin ZHAO
  • Keywords: viscous damping wall, optimal placement algorithm, grid shear velocity, tall building
Abstract
Viscous damping wall (VDW) is an innovative high efficient energy dissipation device for reducing the dynamic responses of building structures and can be flexibly arranged according to the locations of partition walls in tall buildings. Comparing with the traditional rod type damper, the viscous damping wall has more energy dissipation capacity due to the larger friction area between the surfaces of embedded steel plate and the viscous media, and can be applied for suppressing the vibration amplitude of the building structures under both earthquake and wind. Both the number and position of the devices will contribute to the energy dissipation capacity of the viscous damping walls. The number of VDWs in certain project is commonly limited due to budget constraint; it is always desirable that the VDWs are to be installed in those places which can maximize the energy dissipation during earthquake. In current engineering practices, the positions of viscous damping walls are commonly determined by engineering experiences or building deflection. Grid shear velocities (GSWs) of building floors were proposed in this paper as the index for determine the optimal placements of the viscous damping walls in a tall building. Based on the grid shear velocity, the proposed optimal placement algorithm can effectively improve the energy dissipation capacity of the viscous damping walls. The grid shear velocities (GSV) based optimal placement algorithm is applied in a tall building structure located in an area of high seismicity to illustrate its applicability and effectiveness in the final part of this paper.

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