屋根型単層ラチスシェルの地震荷重伝達能力に限界づけられるトラスアーチ架構の動的挙動と保有耐力評価

抄録

The study deals with EP roof type lattice shells with ceiling panels supported by truss arch frames on the both sides. The estimation method based on the elasto-plastic dynamic buckling analyses considering a geometric nonlinearity is proposed to calculate practically the base-shear strength coefficient and the applied seismic lateral and vertical load distributions on the lattice shell and the truss arch frame. As far as the collapsed mechanism is concerned, the member buckling occurs in the both structural elements. The proposed method is practically useful to determine the collapse mechanism and calculate the ultimate lateral strength on the earthquake-proof design for the damage and safety limit earthquakes.