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http://dx.doi.org/10.9712/KASS.2012.12.2.109

A Study on the Dynamic Instability Characteristics of Latticed Domes Under Sinusoidal Excitations  

Kim, Seung-Deog (세명대학교 건축공학과)
Kang, Joo-Won (영남대학교 건축학부)
Jang, Je-Pil (세명대학교 건축공학과)
Publication Information
Journal of Korean Association for Spatial Structures / v.12, no.2, 2012 , pp. 109-118 More about this Journal
Abstract
Few paper deal with the dynamic bucking under the load with periodic characteristics, and the behavior under periodic excitation is expected the different behavior against STEP excitation. A space frame structure has high stiffness with a structure resisting external forces in steric conformation. According to many structural conditions, structural stability problems in the space frame are determined and considered very important. This study seeks to understand the space frame collapse mechanism using the 2-free nodes truss model in order to examine static structural instability characteristics of the latticed dome. According to geometrical shape, the star dome, parallel lamella dome and three way grid dome were selected as models. The models were examined for characteristics of instability behavior according to rise-span ratio(${\mu}$) and shape imperfection.
Keywords
Space frame; Latticed dome; Initial imperfection; Sinusoidal excitations; Dynamic bucking;
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