论文部分内容阅读
介绍了一种新型的铜框架梁柱节点形式,其中预应力钢绞线提供了结构在地震作用下的复位功能(自定心),设置在梁端下翼缘的摩擦件则为结构提供了耗能能力;介绍了下翼缘摩擦式自定心钢框架粱柱节点的构造和工作原理,以节点的低用反复加载试验结果为依据,利用面向对象的开放式计算程序OpenSees建立了节点的数值模型,并侧重于模拟节点在地震作用下的张开/闭合、自定心、摩擦耗能以及螺栓受剪等特性。由计算结果与试验结果对比可知,所建立的数值模型对节点的抗震性能具有良好的模拟效果。
A new type of copper frame beam-column joint is introduced, in which the prestressed steel strand provides the function of resetting the structure under earthquake (self-centering), and the friction element provided on the lower flange of the beam end provides the structure This paper introduces the structure and working principle of lower-flange friction self-centering steel frame beam-column joints. Based on the low repetitive loading test results of joints, the open-ended object-oriented computing program OpenSees is used to establish the nodes Numerical model, and focuses on the characteristics of simulating open / closed, self-centering, frictional energy dissipation and bolt shearing under the action of an earthquake. Comparing the calculated results with the experimental results, we can see that the numerical model established has a good simulation effect on the seismic performance of the joints.