Abstract
The present paper proposes a simple and efficient procedure to evaluate seismic fragility and risk of spatial structures and studies on seismic loss of a dome structure. As an example for calculating the seismic risk, a numerical investigation is performed for a single layer lattice dome supported by a substructure implemented with ductile braces as buckling restrained braces. The analysis of seismic loss is based on a simple rule for judging the damage to both of the structural and non-structural elements. The effectiveness and feasibility of the study is discussed and necessity of some kind of energy absorbing devices is suggested for more damage reduction through several examples with different yield base shear coefficient.
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