A new control method is proposed to improve the seismic performance of double-layered Kiewitt Spherical reticulated shells. The approach taken is to replace selected bars in the shell with passive viscoelastic dampers; thus, the grid of the shell doesn't need to be changed. Computational models of the shell with the eight different damper topologies are developed using ANSYS®. The seismic response of the shell is simulated to determine the performance of the various damper topologies. A parameter study is conducted to determine optimal values for the damping coefficient of dampers. Finally, the dynamic stability and failure modes of the shell are investigated through incremental dynamic analysis. If designed well, failure of the controlled shell is usually the result of a strength failure, rather than a dynamic instability.
CaoZ.ZhangY. G. (2000). A Study on the Seismic Response of Lattices Shells. International Journal of Space Structures, 15(3&4): 243–247.
2.
FanF.ShenS. Z.ParkeG. A. R. (2005). Study of the Dynamic Strength of Reticulated Domes under Severe Earthquake Loading. International Journal of Space Structures, 20(4):235–244.
3.
HorrA. M.SchmidtL. C. (1996). A Fractional Domain Dynamic Analysis of Large Space Structures with Added Electrometric Dampers. International Journal of Space Structures, 11(3): 279–289.
4.
KasaiK.MotoyuiS.OokiY. (2001). Viscoelastic Damper Modeling and Its Application to Dynamic Analysis of Visco-Elastically Damped Space Frames. IASS International Symposium on Theory, design and realization of shell and spatial structures, Nagoya, Japan, October 9–13, 2001: 266–267.
5.
LiangH. T.WuJ. Z.ZhangY. G. (2003). Shaking Table experimental research on passive control of double-layer reticulated shell with some bottom chords replaced by dampers. Earthquake Engineering and Engineering Vibration, 23(4): 178–182. (Chinese).
6.
MamoruI.MasatoshiM. (2006). Buckling-restrained Brace Using Steel Mortar Planks: Performance Evaluation as A Hysteretic Damper. Earthquake engineering and Structural Dynamics, 35:1807–1826.
7.
OhH. U.OnodaJ. (2002). An Experimental Study of a Semi-active MR Fluid Variable Damper for Vibration Suppression of Truss Structures. Smart Materials and Structures. 11(1):156–162.
8.
OnodaJ.OhH. U.MinesugiK. (1996). Semi-active Vibration Suppression of Truss Structures by ER Fluid Damper. Structural Dynamics and Materials Conference. 3: 1569–1577.
9.
QinN. B.ZhangY. G.RuY. (2005). Shaking Table Experimental Study on Earthquake Resistance Control of Double-layer Latticed Cylindrical Shell with New Type Damper Elements. Journal of Building Structure, 26(6): 108–11. (Chinese).
10.
SakaT.TaniguchiY. (1997). Damage to Spatial Structures by the 1995 Hyogoken-Nanbu Earthquake in Japan. International Journal of Space Structures, 3&4: 125–133.
11.
ShenS. Z.LanT. T. (2001). A Review of the Development of Spatial Structures in China. International Journal of Space Structures, 16(3): 157–171.
12.
ShingnK.NikiT. (2001). A Study on Base Isolated Shell. IASS, Symposium 2001, Nagoya: 262–263.
13.
UchikoshiM.KatoS.NakazawaS.MukaiyamaY. (2001). How Do We Realize a Super Large Dome under Severest Earthquake?-A Dome with Seismic Isolation System. IASS International Symposium on Theory, design and realization of shell and spatial structures, Nagoya, Japan, October 9–13, 2001: 258–259.
14.
WangX. L.ChenX. Y.YinZ. Z. (2007). An Analysis of Seismic Vibration Reduction of K6 Spherical Latticed Shell by Means of Buckling-Restrained Braces. Journal of Gansu Sciences, 19(1): 122–126. (Chinese).
15.
XuY. L.QuW. L.ChenZ. H. (2001). Control of Wind-excited Truss Tower using Semi-active Friction Damper. Journal of Structural Engineering, ASCE, 861–868.
16.
YangY. (2009). Replaceable Spar-Type Piezoelectric Friction Damper and Its Application in Vibration Control of Lattice Shells. National Science Foundation Report of China. (Chinese).
17.
ZhangY. G.LiangH. T. (2003). Semi-active Control Strategy of Double Layer Cylindrical Lattice Shell Replacing Controllable Chords. Journal of Beijing University of Technology, 29(3): 320–324. (Chinese).
18.
ZhangY. G.RenG. Z. (2001). A Practical Method on Seismic Response Controlled Double Layer Cylindrical Lattice Shell with Variable Stiffness Members. IASS International Symposium on Theory, design and realization of shell and spatial structures, Nagoya, Japan, October 9–13, 2001: 153–154.
19.
ZhuL. M.QianJ. H.ZhangW. Y. (2007). Parameter analysis of vibration reduction of double-layer cylindrical latticed shell with viscous dampers. Journal of Building Structures, 28(4): 58–63. (Chinese).
