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Vol. 47 (2006) No. 3 December n. 152


Experimental Studies of Tower Structures with Hysteretic Dampers

< Table of Contents for Vol. 47 (2006) No. 3 December n. 152
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 47 (2006) No. 3 December n. 152
  • Pages: 229-236
  • Title: Experimental Studies of Tower Structures with Hysteretic Dampers
  • Author(s): Y. Ookouchi, T.Takeuchi, T.Uchiyama, K.Suzuki, T.Sugiyama, T.Ogawa & S. Kato
  • Keywords: Truss Tower, Seismic Retrofit, Buckling Restrained Brace, Connections
Abstract
The authors propose the concept of damage-tolerant truss-structures by introducing hysteretic dampers into them, which dissipate the seismic energy and avoid the buckling of other members by limiting the response forces. This concept is employed in practical communication towers and its validity is confirmed. This concept simplifies reinforcement work since only a few diagonal members need to be replaced with damper members. In this study, the actual sizes of the structures around the dampers have been mocked up, and cyclic loadings up to 4% of the story drift angle are performed. These results are compared with those of the diagonal members made of normal pipes and concrete in-filled members; further, the energy dissipation capacity of each system is discussed. When the diagonal members are replaced with damper members, site work required for connections become minimum and simple. In this study, various types of connections have been tested, and their out-of-plane stabilities have been compared and discussed.

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