Buckling Strength of Single Layer Lattice Domes Under Static Seismic Load

Abstract

Keywords : Static seismic load, Single layer lattice dome, Continuum shell analogy, Elasto-plastic buckling analysis, Buckling load factor, Incremental dynamic analysis 静的地震荷重，単層ラチスドーム，連続体置換，弾塑性座屈解析，座屈荷重係数，動的増分解析Although large numbers of attempts have been made to evaluate buckling strength of single layer lattice domes under equallydistributed vertical loads, stability under seismic loads has not been studied enough yet. In this paper, evaluation method on buckling strength of single layer lattice domes based on continuum shell analogy under equivalent static seismic loads proposed in the previous studies is investigated. First, the buckling behavior under distributed loads proportional to the static seismic loads is researched taking shape parameters into account. Next, the buckling strength for vertical loads and the buckling strength for static seismic loads is evaluated using continuum shell analogy, and converted to elasto-plastic buckling strength using knockdown factors and Dunkerley formulation. The effectiveness of the proposed evaluation is discussed against the results of time-history response analyses. FV' 15) FV /FH 14)FV'/FH'FH' (1) (2), ,

Shape optimization and buckling analysis of novel two-way aluminum alloy latticed shells

“…Journal of Building Engineering. 36, 102100. and seismic responses [15][16][17][18] have been conducted ever since the single-layer latticed shell was proposed. Practical applications of cable-stiffened single-layer latticed shells can be also found worldwide [19,20] (Fig.…”