한국공간구조학회논문집 (Journal of Korean Association for Spatial Structures)
- 제3권1호
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- Pages.87-97
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- 2003
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- 1598-4095(pISSN)
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- 2287-7401(eISSN)
절점 강성을 고려한 공간 구조물의 비선형 불안정 거동에 관한 연구
A Study of Nonlinear Unstable Phenomenon of Framed Space Structures Considering Joint Rigidity
- 발행 : 2003.03.15
초록
The structural system that discreterized from continuous shells is frequently used to make a large space structures. As well these structures show the unstable phenomena when a load level over the limit load, and snap-through and bifurcation are most well known of it. For the collapse mechanism, rise-span ratio, element stiffness and load mode are main factor, which it give an effect to unstable behavior. In our real situation, most structures have semi-rigid joint that has middle characteristic between pin and rigid joint. So the knowledge of semi-rigid joint is very important problem of stable large space structure. And the instability phenemena of framed space structures show a strong non-linearity and very sensitive behavior according to the joint rigidity For this reason In this study, we are investigating to unstable problem of framed structure with semi-rigidity and to grasp the nonlinear instability behavior that make the fundamental collapse mechanism of the large space frame structures with semi-rigid joint, by proposed the numerical analysis method. Using the incremental stiffness matrix in chapter 2, we study instability of space structures.
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