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Risk-Informed Mean Recurrence Intervals for Updated Wind Maps in ASCE 7-16
| 题名： | Risk-Informed Mean Recurrence Intervals for Updated Wind Maps in ASCE 7-16 |
| 其他题名： | ANSI(American National Standards Institute).(1982)."Minimum design loads for buildings and other structures."ANSI A58.1,Washington,DC. |
| 正文语种： | 英文 |
| 作者： | Therese P. McAllister |
| 关键词： | risk-informed；reliability；structure；istent；asce；period；engineering；different；section；retur |
| 摘要： | ASCE 7 is moving toward adopting load requirements that are consistent with risk-informed design goals characteristic of performance-based engineering (PBE). ASCE 7-10 provided wind maps that correspond to return periods of 300, 700, and 1,700 years for Risk Categories I, II, and combined III/IV, respectively. The risk targets for Risk Categories III and IV buildings and other structures (designated as essential facilities) are different in PBE. The reliability analyses reported in this paper were conducted using updated wind load data to (1) confirm that the return periods already in ASCE 7-10 were also appropriate for risk-informed PBE, and (2) to determine a new risk-based return period for Risk Category IV. The use of data for wind directionality factor, Kd, which has become available from recent wind tunnel tests, revealed that reliabilities associated with wind load combinations for Risk Category II structures are, in fact, consistent with the reliabilities associated with the ASCE 7 gravity load combinations. This paper shows that the new wind maps in ASCE 7-16, which are based on return periods of 300, 700, 1,700, and 3,000 years for Risk Categories I, II, III, and IV, respectively), achieve the reliability targets in Section 1.3.1.3 of ASCE 7-16 for nonhurricane wind loads. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N05016 |
| 英文栏目名称： | TECHNICAL NOTES |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002011 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 05 |
| 页码： | 182-185 |
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