PROBABILISTIC DESCRIPTIONS OF WIND EFFECTS AND WIND-LOAD FACTORS FOR DATABASE-ASSISTED DESIGN
PROBABILISTIC DESCRIPTIONS OF WIND EFFECTS AND WIND-LOAD FACTORS FOR DATABASE-ASSISTED DESIGN
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DOI：
10.1061/(asce)0733-9445(2005)131:3(507
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发表时间：
2005-03
期刊：
影响因子：
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通讯作者：
S. Diniz;E. Simiu
中科院分区：
文献类型：
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作者：
S. Diniz;E. Simiu
数据库辅助设计（DAD）的风导致结构减少材料消耗和故障风险，即，提高安全性和可持续性。本文提出了一种与DAD兼容的概率方法，用于估计：（1）对应于任意平均风速重现间隔的风效应;（2）风荷载系数。与ASCE 7标准和早期的结构可靠性估计不同，该程序考虑了峰值估计的固有随机性和相关风相关知识的不确定性。在合理选取不确定性参数的基础上，得出以下结论：（1）极端风速分布类型对荷载系数的估计有显著影响。我们的估计，基于极值III型反向威布尔分布，屈服载荷系数与ASCE 7标准中规定的值一致，与20世纪80年代发表的估计相反。(2)风速比的变化平均…
Database-assisted design (DAD) for wind results in structures with reduced material consumption and failure risks, i.e., in improved safety and sustainability. The paper presents a DAD-compatible probabilistic procedure for estimating: (1) Wind effects corresponding to any mean recurrence interval of the wind speeds, and (2) wind-load factors. Unlike the ASCE 7 Standard and earlier structural reliability estimates, the procedure accounts for the inherent randomness in the estimation of peaks and for relevant wind-related knowledge uncertainties. On the basis of a selection of uncertainty parameters believed to be reasonable, it is concluded that: (1) The extreme wind speed distribution type significantly affects the estimates of the load factors. Our estimates, based on the Extreme Value Type III Reverse Weibull distribution, yield load factors consistent with values specified in the ASCE 7 Standard—in contrast to estimates published in the 1980’s. (2) The variability of the ratio between wind speeds aver...