Experimental investigation of adjacent buildings connected by fluid damper

You Lin Xu, S. Zhan, J. M. Ko, W. S. Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

67 Citations (Scopus)


Dynamic characteristics and harmonic response of adjacent buildings connected by fluid damper were experimentally investigated using model buildings and fluid damper. Two building models were constructed as two three-storey shear buildings of different natural frequencies. Model fluid damper connecting the two buildings was designed as linear viscous damper of which damping coefficient could be adjusted. The two buildings without fluid dampers connected were first tested to obtain their individual dynamic characteristics and responses to harmonic excitation. The tests were then carried out to determine modal damping ratios of the adjacent buildings connected by the fluid damper of different damping coefficients and at different locations. Optimal damper damping coefficient and location for achieving the maximum modal damping ratio were thus found. The measured modal damping ratios and harmonic responses of the building-fluid damper system were finally compared with those from the individual buildings. The comparison showed that the fluid damper of proper parameter could significantly increase the modal damping ratio and tremendously reduce the dynamic response of both buildings.
Original languageEnglish
Pages (from-to)609-631
Number of pages23
JournalEarthquake Engineering and Structural Dynamics
Issue number6
Publication statusPublished - 1 Jan 1999


  • Adjacent buildings
  • Dynamic characteristic
  • Experimental investigation
  • Fluid damper
  • Harmonic response

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)


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