接合部の非線形な剛性特性を考慮した半剛接鋼骨組の地震応答解析

概要

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In this paper, in order to discuss aseismic capacity of semi-rigid frames under actual earthquake wave, the seismic response analyses for two semi-rigid frames were conducted, which are semi-rigid 1-bay 3-story frame and 3-bay 4-story frame with mixed use of semi-rigid and rigid connections. Here, the dynamic characteristics of steel frame such as fixed end-moment, base shear force and displacement of frames were discussed by inputting four kinds of seismic waves: El Centro NS; JR Takatori EW; Taft NS; and Golden gate EW earthquakes. Semi-rigid connections were represented by a discrete rotational spring with nonlinear connection stiffness which is given by using a three-parameter power model, and whose hysteretic moment-rotation relation was assumed by using an independent hardening model. The results obtained from this study were as follows: 1) the maximum bending moment, shear force can be reduced by proper combinations of rigid and semi-rigid connections, and 2) semi-rigid connections may be used for tall frames accompanying with rigid connections.
一般社団法人日本建築学会の論文
2003-03-20