Effect of Moments Due to Lateral Deformation in Gravity Columns
Abstract eng: In steel buildings, all columns of a story experience similar drifts under seismic loads when floor diaphragms are rigid. Columns in lateral-force-resisting frames are designed with these deformations in mind, but gravity columns often are not. When gravity columns are continuous, moments develop when interstory drifts occur. Using nonlinear dynamic analysis software, moments due to lateral deformation from seismic forces were obtained for lateral-force-resisting columns within 3- and 9-story buckling-restrained-brace frames (BRBFs). Moments in gravity columns were then determined. Gravity columns were evaluated with interaction equations to determine whether load demands exceeded column capacity. For most gravity columns, column capacity was exceeded. Recommendations for improved gravity column design are given.
Contributors:
Conference Title:
Conference Title:
14th World Conference on Earthquake Engineering
Conference Venue:
Bejing (CN)
Conference Dates:
2008-10-12 / 2008-10-17
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
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Record created 2014-12-05, last modified 2014-12-05
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