RIA: Computer Modeling and Examination of 3D Inelastic Beam-Column Joint Behavior in Steel Structures

建筑设计和施工的最新趋势增加了更现实地模拟结构行为的需要。一个值得关注的领域是评估非弹性梁柱节点的行为及其对结构响应的影响。在提出的研究中，将开发一种将关节柔性纳入三维框架结构分析和设计的有限元分析程序。该程序将能够进行几何或材料非线性分析，或两者兼而有之。非弹性循环行为将使用从经典塑性扩展而来的多参数力空间边界面方法来处理。现有的实验研究结果将在一个交互系统中用于分配关节行为特征到模型中。该项目将用于研究二维和三维框架结构的关节灵活性，并为设计制定实用指南。所开发的方法在一定程度上也适用于钢筋混凝土和复合材料体系。

Recent trends in building design and construction are increasing the need to model structural behavior more realistically. One area of concern is evaluation of inelastic beam-column joint behavior and its influence on structural response. In the proposed research, a finite element analysis procedure for including joint flexibility in the analysis and design of 3D frame structures will be developed. This procedure will be capable of geometric or material nonlinear analysis, or both. Inelastic cyclic behavior will be handled using multi-parameter force-space bounding surface methods extended from classical plasticity. Results of existing experimental research will be utilized in an interactive system for assigning joint behavior characteristics to the model. This program will be used for studying joint flexibility in 2D and 3D framed structures, and developing practical guidelines for design. The methods developed will to some degree also be applicable to reinforced concrete and composite systems.