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首页> 外文学位 >Behavior and design of metal building frames using general prismatic and web-tapered steel I-section members.
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Behavior and design of metal building frames using general prismatic and web-tapered steel I-section members.

机译：使用普通的棱形和网状钢制I型截面构件的金属建筑框架的行为和设计。

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摘要

Metal building frames are typically designed using welded prismatic and web-tapered members with doubly-symmetric and/or singly-symmetric cross sections. Until recently, the base U.S. provisions for design of frames with web-tapered members were provided in the AISC ASD (1989) and LRFD (1999) Specifications. Unfortunately, these previous AISC provisions address only a small range of practical designs. As a result, metal building manufacturers have tended to develop their own methods for design of the wide range of nonprismatic member geometries and configurations encountered in practice.;This research develops new design procedures for design of frames using general prismatic members and web-tapered members. An equivalent prismatic member concept utilized in prior research and the prior AISC provisions is generalized to accommodate the broad range of member types and configurations commonly used in metal building industry. Furthermore, the new design procedures incorporate many of the improvements achieved in the AISC (2005 & 2010) Specifications to metal building frame design. These improvements include a new stability design method, the direct analysis method, more complete considerations of different column buckling limit states (flexural, torsional and flexural-torsional buckling), and improved axial load and flexural resistance provisions. This research develops practical design-based procedures for simplified calculation of the elastic buckling resistances of prismatic and web-tapered members to facilitate the application of the proposed design methods. In addition, this research performs a relatively comprehensive assessment of beam lateral torsional buckling (LTB) behavior and strength of prismatic and web-tapered members using refined virtual test simulation. It is demonstrated that web-tapered members behave in a comparable fashion to prismatic members. Based on the virtual simulation study, recommendations for potential improvement of the AISC LTB resistance equations are provided. Lastly, the strength behavior of several representative metal building frames is studied in detail using the same virtual test simulation capabilities developed and applied for the assessment of the beam LTB resistances.
机译：金属建筑框架通常使用具有双对称和/或单对称横截面的焊接的棱柱形和网状锥形构件来设计。直到最近，AISC ASD（1989）和LRFD（1999）规范中都提供了美国有关带网状锥度框架设计的基本规定。不幸的是，这些先前的AISC规定仅涉及一小部分实用设计。结果，金属建筑制造商趋向于开发自己的方法来设计在实践中遇到的各种非棱柱形构件的几何形状和构型。该研究开发了使用通用棱柱形构件和网状圆锥形构件设计框架的新设计程序。 。先前的研究和先前的AISC规定中使用的等效棱柱形构件概念被普遍适用，以适应金属建筑行业中通常使用的各种构件类型和配置。此外，新的设计程序将AISC（2005＆2010）规范中实现的许多改进纳入了金属建筑框架设计。这些改进包括新的稳定性设计方法，直接分析方法，对不同柱屈曲极限状态（挠曲，扭转和挠曲-挠曲屈曲）的更完整考虑，以及改进的轴向载荷和挠曲阻力规定。这项研究开发了实用的基于设计的程序，用于简化计算棱柱形和腹板锥形构件的弹性屈曲阻力的过程，以方便所提出的设计方法的应用。此外，本研究使用改进的虚拟测试模拟对梁的横向扭转屈曲（LTB）行为以及棱柱和腹板锥形构件的强度进行了相对全面的评估。可以证明，网状锥形构件的行为与棱柱形构件相当。基于虚拟仿真研究，为AISC LTB电阻方程的潜在改进提供了建议。最后，使用相同的虚拟测试模拟功能详细研究了几种具有代表性的金属建筑框架的强度行为，并将其用于评估梁LTB电阻。

著录项

  • 作者

    Kim, Yoon Duk.;

  • 作者单位

    Georgia Institute of Technology.;

  • 授予单位 Georgia Institute of Technology.;
  • 学科 Engineering Civil.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 562 p.
  • 总页数 562
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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