アンカーボルトを多数配列したノンスリップ型露出柱脚の復元力特性 : 無軸力下の場合のセルフセンタリング性能

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Steel buildings generally use anchor-bolt-yield-type exposed column-bases. These column-bases show slip-type restoring force characteristics, and the cyclic behavior of column-bases with multi-rows of anchor-bolts becomes very complicated. The authors have proposed non-slip-type column-bases using a wedge device to minimize slip. This paper describes an experimental study on both non-slip-type and slip-type column-bases subjected to cyclic loadings for comparison with models of restoring force characteristics proposed by the authors. The following observations were made: 1) The non-slip-type column-bases showed no slip behavior. 2) The non-slip-type column-bases with multi-rows of anchor bolts provided self-centering performance. 3) The slip-type column-bases with multi-rows of anchor bolts showed complicated cyclic curves. However, the cyclic behavior of the non-slip-type column-bases was very simple.
2007-11-30