Seismic performance of double-layer spherical reticulated shell with replaceable bar-type dampers

Yang Yang; Bill Spencer; Youming Li; Shizhao Shen

doi:10.1260/0266-3511.26.1.31

Seismic performance of double-layer spherical reticulated shell with replaceable bar-type dampers

Yang Yang, Bill Spencer, Youming Li, Shizhao Shen

Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

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. Aparameter 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.

Original language	English (US)
Pages (from-to)	31-44
Number of pages	14
Journal	International Journal of Space Structures
Volume	26
Issue number	1
DOIs	https://doi.org/10.1260/0266-3511.26.1.31
State	Published - Mar 1 2011

Keywords

Reticulate shells
bar type dampers
dynamic stability
seismic performance

ASJC Scopus subject areas

Conservation
Civil and Structural Engineering
Architecture
Building and Construction

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