INFLUENCE OF BAUSCHINGER EFFECT ON SEISMIC RESISTANCE OF STEEL STRUCTURES

Abstract

The restoring force charaderistics of steel frames can be decomposed into the skeleton part， the Bauschinger part and the elastically unloaded part． Hiしherto，洫 most cases ， the Bauschinge rpart has been disregarde idn evaluahllg the seismic resistance of steel structures ， and the contribution of 亡he Bauschinger effect to 出 e seism 孟c resistance has been lef tunknown ． In this paper ， the shape of the Bauschinge rpart in the restoring forc echaracteristics of stee 呈 mQment frame sls made clear experimen 亡aLly ， and the influenc oef the Ba ロschinger effect on the seismic resistance of steel moment frames is c ［arified through dynamic response analyses allowing for the Bauschingef effect ． It is demQnstrated出 at the influenc eof the Bauschinge reffect is remarkable and the energy absorption capacity of steel moment frames can be doubled by the Bauschinger effect， Key脚 rds ：restoring for ccheara ‘teristi．sc， Bazasゐc加9艀 轟齪 ， energy absorption caPa ‘it）’