Abstract
The purpose of this paper is to obtain useful buckling data on the single layer two-way grid dome with diagonal members. The dome is composed of circular steel tube menber, spherical nodes and PC bar members. PC bar members as tension member are placed diagonals of the two-way grid. The numerical method considers both node size and rigidity of tubular member ends. The numerical analysis parameters of domes are the attachment of tension member, the initial axial force of tension member, the load pattern and so on. For these domes, effects of these parameters on both buckling load and mode are examined. As a result, the buckling load of two-way grid dome increases by the attachment of tension member and the intruduction of the initial axial force to tension member respectively. Initial axial force of maximum buckling load is defined by the initial axial force of tension member that the buckling load of two-way grid dome becomes maximum value.
