上下地震動を受ける矩形平面状の屋根型偏平球殻の応答性状 : 応答値の推定と位相差の影響の検討

概要

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The effect of vertical earthquake motions plays an important role for the design of a long-span structure. This paper considered a simply supported roof shell on a square plan and investigated the effects of vertical earthquake motions considering phase differences of applied earthquake motions at the bases. As a result of dynamic analysis, the following results have been obtained. i) The uniform support excitations from earthquake, which are identical and have no phase differences, give rise to larger values of responses than those induced from some different classes of support excitations. ii) By the analysis under three earthquake motions : EL-CENTRO UD, TAFT UD and HACHINOHE UD, the presumptive coefficient α for non-dimensional maximum in -plane stresses remains constant with respect to τ (= R/ts), and the presumptive coefficient β for non-dimensional maximum bending stresses varies linearly with respect to τ. In accordance with above-mentioned results, this paper has proposed the presumptive equations for nondimensional maximum responses of in-plane and bending stresses.
社団法人日本建築学会の論文
1988-01-30