多層建築の構造設計について

概要

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The authers feel that the structural design of a tall building based on the deformation is as important as the design based on the stress and strength. There is a limitation in interstory deflections because of the difficulty of design of details which can follow to a larg deflection, increase of bending moment at the lower columns by vertical loads, producing negative stope restoring force characteristics in the plastic range, and unstable feelings which be given to the people in the building. The limitatation of deflections adopted in this paper is 1/300 of the story height or less than that, and calculation of earthquake responses is made by a digital electronic computer. The limitations are decided based on the allowable deflections of details usually used. Repeating the response calculation, comparison of the maximum deflections obtained with the given limitation, and correction of the values of rigidities, the systems in which the maximum deflections of elastic response to an earthquake or more accod to given values are calculated. It becomes clear that a parabolic rigidity distribution of a building in vertical direction shows preferable results in the response calculation, provided that the earthquake characteristics given to the building are not quite different from those of the E1 Centro and Taft Earthquakes.
社団法人日本建築学会の論文
1965-01-30