Reliability Evaluation of Current Design Procedures for Steel Buildings Under Seismic Loads

本研究计划继续进行第二阶段的工作，评估根据《统一建筑规范》(UBC)建议的最新规定设计的建筑物的性能和安全性加州结构工程协会(SEAOC)。研究将集中在风险对结构抗力中不确定性的敏感性，特别是非结构部件的贡献；对现行规范程序的评估；以及开发替代程序，以实现更具风险一致性的设计。我们将研究其他建筑类型，即偏心支撑框架和双框架体系。根据风险研究的结果，将仔细研究不同建筑物类型的RW系数，如有需要，将推荐与不同建筑物类型的安全要求更一致的RW替代值。此外，还将制定设计程序，通过漂移限制提供给定量的损害控制。在抗震性能或典型建筑类型、覆层和要研究的非结构构件方面获得的知识将是最积极的。预计结果将对建筑规范的制定产生重要影响。

This research program continues work in a second phase evaluation of the performance and safety of buildings designed according to the recent provisions recommended by the Uniform Building Code (UBC) and the Structural Engineering Association of California (SEAOC). Research will concentrate on sensitivity of risk to uncertainty in structural resistance, in particular the contribution of nonstructural components; appraisal of current code procedures; and development of alternative procedures for more risk consistent design. Additional building types, i.e., eccentric braced frame and dual frame systems, will be studied. Based on the results of the risk study, the Rw factors for different building types will be carefully examined and if needed alternative values of Rw will be commended which are more consistent with safety required for different building types. Also, design procedures will be developed which provide a given amount of damage control through drift limitation. Knowledge to be gained in the seismic behavior or representative building types, cladding, and nonstructural elements to be studied will be most positive. Results are anticipated to have an important impact on building code development.