| Title |
Effects of Geometrically Initial Imperfection in Proportioning Method for Member Sections of Single Layer Reticulated Domes |
| Authors |
Kim. Jong-Min ; Hwangbo. Seok ; Han. Sang-Eul |
| Keywords |
Single Layer Reticulated Dome ; Proportioning Method for Member Sections ; Geometrical Initial Imperfection ; Elasto-plastic Buckling |
| Abstract |
First author proposed a proportioning method for member sections of rigidly jointed single layer reticulated dome subjected to uniform and non-uniform load without any geometrical initial imperfection, and discussed the validity and effectiveness of the method which was based on linear buckling stress and a knock down factor. However, buckling of a single layer reticulated dome is strongly affected by geometrical initial imperfection. It is well known that geometrical initial imperfections reduce the nonlinear buckling capacity of a single layer raticulated dome. Thus, structural engineers may be recommended to reflect the effects of geometrical initial imperfections in proportioning member sections. In this paper, firstly, the presented proportioning method by first author is applied to dome without consideration of any imperfections and the thickness and diameter of each member are determined. Secondly, the load bearing capacities of the proportioned domes are checked with geometrical initial?? imperfection, by the inelastic buckling analysis. |