Composite Interaction of Steel Frame Members and Reinforced Concrete Walls Under Seismic Loading

地震荷载下钢框架构件与钢筋混凝土墙的复合相互作用

• 批准号: 9810005
• 负责人: Jerome Hajjar
• 金额: $ 11.49万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9810005&HistoricalAwards=false
• 关键词: Composite; Interaction; Steel; Frame; Members

9810005 Hajjar This project presents a combined computational/experimental effort focusing on the seismic behavior of the interface between concrete walls and steel frame members in composite wall structural building systems. The work targets the development of comprehensive, nonlinear, static and dynamic analysis procedures for modeling composite wall building structures, including the behavior of the steel/concrete interface; and achieving a more through understanding of the composite cyclic interaction between RC walls and steel framing. Composite structural wall systems provide excellent strength and stiffness to withstand both service level drift and ultimate forces from seismic events. The objectives of the research include the development of a finite element formulation for the seismic analysis of composite reinforced concrete walls with surrounding steel framing, the quantification through experimental testing of the combined cyclic shear and tensil strength of headed hear studs and deformed bar anchors embedded in concrete panels, and the verification and calibration of the shear and axil strength interaction relations under monotonic and cyclic loading for connectors used in practice used in practice. A three-dimensional, nonlinear finite element to model to simulate the cyclic interaction at the steel/concrete wall interface will be formulates. A series of experiments will be designed to document the cyclic interaction along the interface between RC walls and surrounding steel framing. The analyses will feature a geometrically and materially nonlinear finite element formulation, using a new fiber-based finite element for the shear connectors and appropriate continuum elements for the concrete in the interface region, align with stress-space plasticity formulations for both the concrete and steel. The ultimate goals is the development of clear guidelines for: 1) incorporating the steel-concrete interface behavior in both linear and nonlinea r analyses of composite wall systems; and 2) detailing the steel frame-concrete panel connection to achieve desirable performance goals. This project is supported under the fourth year competition of NSF 94-154. ***

9810005 Hajjar这个项目提出了一项综合计算/实验努力，重点介绍了复合壁结构建筑系统中混凝土壁和钢框架构件之间界面的地震行为。 该工作针对建模复合壁建筑结构的综合，非线性，静态和动态分析程序的开发，包括钢/混凝土界面的行为；并通过了解RC壁和钢框架之间的复合循环相互作用而获得更多的实现。复合结构壁系统提供了出色的强度和刚度，可承受服务水平的漂移和地震事件的最终力量。 这项研究的目标包括开发有限元配方，用于对周围钢框架进行复合钢筋混凝土壁的地震分析，通过对组合循环剪切的实验测试和头部的刺激性测试进行定量，并在混凝土和校准中嵌入了固定在混凝土和校准中的固定固定的螺柱，并进行了变形的杆，并进行了变形的固定固定，并进行了验证，并进行了验证，并进行了验证，并进行了验证，并进行了验证，并进行了验证，并进行了cy型固定的固定型，并进行了cy型的固定型，并进行了cy型的固定式固定式固定的固定。实践中使用的连接器。 用于模拟钢/混凝土壁界面处的环状相互作用的三维非线性有限元将是公式的。 将设计一系列实验，以记录沿RC壁和周围钢框架之间的界面的循环相互作用。 这些分析将采用几何和物质非线性有限元配方，使用新的基于纤维的有限元来用于剪切连接器，并适合界面区域中混凝土的合适的连续元素，并与混凝土和钢的应力空间可塑性配方保持一致。 最终目标是制定以下明确的准则：1）将钢质纠纷界面行为纳入复合壁系统的线性和非线性分析； 2）详细说明钢架 - 混凝土面板连接以实现理想的性能目标。 该项目在NSF 94-154的第四年比赛中得到了支持。 ***