Determination of Second-Order Effects and Design for Stability Using the Drift Limit

被引：0
|
作者：
Sabelli, Rafael [1 ]
Griffis, Larry [2 ]
Geschwindner, Louis F. [3 ,4 ]
机构：
[1] Walter P Moore, Seism Design, San Francisco, CA 94105 USA
[2] Walter P Moore, Austin, TX USA
[3] Providence Engn Corp, Lancaster, PA USA
[4] Penn State Univ, Architectural Engn, State Coll, PA USA
来源：
ENGINEERING JOURNAL-AMERICAN INSTITUTE OF STEEL CONSTRUCTION | 2021年 / 58卷 / 03期
关键词：
stability design; drift limit; second-order analysis; amplifier;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Buildings for which second-order effects are significant are often governed by drift limits. Amplifier-based approximate second-order analysis, as presented in AISC Specification Appendix 8 (2016), typically utilizes factors based on first-order drift, for which a preliminary design and an analysis are required. This paper derives equations for the amplifier used in approximate second-order analysis, B-2, based on the second-order drift. Upper-bound values of amplifiers based on the drift limit can thus be determined in advance of design, eliminating the need for iteration and simplifying the design process; these values are not excessively conservative for drift-governed designs.
引用
收藏
页码：185 / 196
页数：12
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