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首页> 外文期刊>Engineering Structures >Reliability of steel frames designed in accordance with the National Building Code of Canada seismic provisions and its implication in codified design
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Reliability of steel frames designed in accordance with the National Building Code of Canada seismic provisions and its implication in codified design

机译：根据加拿大国家建筑规范的抗震规定设计的钢框架的可靠性及其在规范化设计中的意义

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摘要

The 2005 edition of the National Building Code of Canada (NBCC) that replaces the 1995 edition of the NBCC has been released recently. The new edition incorporated many changes to the seismic provisions. The rationale behind these changes is documented in the literature. However, a quantitative assessment of the implied reliability level of the designed structures according to the seismic provisions in the new and previous editions of the NBCC is lacking, and the target reliability levels used to calibrate the new seismic design loads, if any, is not spelled out. In this study, a reliability assessment of six steel moment resisting frames designed according to these codes is carried out. The assessment uses a ductility-based procedure and the obtained results are compared with those obtained using the procedure developed for use in the SAC project. The estimated reliabilities for the designed frames using both procedures are in good agreement. In addition, the reliability levels for frames designed in accordance with the new and previous editions of the NBCC are consistent. Use of the ductility-based procedure for calibrating seismic design loads to meet specified target reliability levels considering both incipient damage and incipient collapse are illustrated. The results suggest that, depending on the displacement ductility capacity factor, the seismic design level could be governed by the considered target reliability levels for the incipient damage or incipient collapse.
机译：最近发布了取代1995年版NBCC的2005年加拿大国家建筑法规（NBCC）。新版本对地震规定进行了许多更改。这些变化背后的原理在文献中有记载。但是，缺乏根据新版和旧版NBCC中抗震规定对设计结构的隐含可靠性水平进行定量评估的方法，并且没有用于校准新抗震设计载荷（如果有）的目标可靠性水平。阐明。在这项研究中，根据这些规范设计的六个钢制抗弯框架进行了可靠性评估。评估使用基于延展性的程序，并将获得的结果与使用为SAC项目开发的程序获得的结果进行比较。使用这两个过程对设计框架的估计可靠性是一致的。此外，根据新版和旧版NBCC设计的框架的可靠性水平是一致的。说明了使用基于延性的程序来校准地震设计载荷，以达到既定目标可靠性水平，同时考虑了初期损坏和初期坍塌的目的。结果表明，根据位移延性承载力因子，地震设计水平可以由考虑的初期破坏或初期坍塌目标可靠度水平控制。

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