假想荷载法的演化

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Evolution of Notional Load Approach

Institute of High Performance Structures, Zhejiang University, Hangzhou 310058, China

摘要: 回顾了假想荷载的来龙去脉,介绍了中国、欧洲和美国规范中对假想荷载法的规定,提出了假想荷载系数公式中的总楼层数应解读为施加假想力的楼层以上的楼层总数,以规避现行假想荷载法取值在逻辑上的一个漏洞,并提出了新的建议公式,新公式在逻辑上更加合理,数值上也更有规律。
- 假想荷载 /
- 二阶分析 /
- 稳定性
Abstract: A brief review is given for the notional load approach, and clauses in the codes GB 50017, Eurocode 3 and AISC 360 are introduced. A new understanding is proposed for the total story number in the current code formulae, which is reinterpreted as the story number above the story at which the notional load exerts. Such a new explanation avoids the logical defect of the traditional notional load approach. A new equation is proposed for the notional load computation.
- notional load /
- second order analysis /
- stability

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