论文部分内容阅读
最新版本的欧洲规范8开启了设计在节点处提升地震输入能耗散能力的抗弯钢框架(MRFs)的大门。近20年来,为了预测主要参数从而描述节点的单调和周期性性能,在此框架内进行了很多试验研究和理论研究。基于这一努力,关于预测普通节点刚度和抗力的公式已纳入欧洲规范3。尽管如此,依然缺少关于处理这种柱脚节点的转动承载力的相关内容。为了弥补对评估柱脚节点其塑性转动性能方面的欠缺,介绍一个可以评估暴露的底板节点延性能力的数学模型。在构件法的框架内,从单节点组件延性能力的定义出发,建立一个可以预测底板节点转动性能的力学方法。此外,在与Salerno大学进行的3个足尺试验相比较后,对提出的力学模型进行了验证。
The latest version of Eurocode 8 opens the door to curved steel frames (MRFs) designed to boost the energy dissipation of seismic inputs at nodes. In the past 20 years, many experimental and theoretical studies have been conducted in this framework in order to predict the monotonic and periodic performance of the nodes in order to predict the main parameters. Based on this effort, a formula for predicting the stiffness and resistance of common nodes has been incorporated into the European norm 3. In spite of this, there is still a lack of relevant content about the handling capacity of such column joints. To compensate for the lack of plasticity in evaluating the behavior of column-to-column joints, a mathematical model that evaluates the ductile capacity of exposed floor joints is presented. In the framework of the component method, starting from the definition of the ductility of a single-node component, a mechanical method that can predict the rotational behavior of the node of the bottom plate is established. In addition, the proposed mechanical model was verified after comparison with the three full-scale tests conducted at the University of Salerno.