%0 Journal Article
%T 大震下钢框架梁柱节点调和变形机制与设计方法
%A 黄远
%A 朱正庚
%A 郭亚飞
%J 湖南大学学报(自然科学版)
%D 2017
%X 为了提高钢框架结构的变形能力，进而改善其抗震性能，建立了钢框架结构梁端〖CD*2〗节点区调和变形机制，通过增加节点区的剪切变形来降低对梁端的转动需求.首先采用通用非线性有限元软件MSCMarc建立钢框架梁柱节点的有限元模型，对已有试验进行非线性有限元分析，有限元分析结果与试验结果吻合良好.在验证了有限元模型合理性的基础上，分析了不同参数条件下，层间位移角为004时钢框架梁柱节点的节点区剪切变形和梁端变形的关系，发现了影响梁端和节点区变形的关键参数.在此基础上提出了梁端〖CD*2〗节点区调和变形的简化设计方法，为钢框架梁柱节点的抗震设计提供参考.</br>In order to improve the deformation capacity of the steel frame structure so as to enhance the seismic performance，in this paper，a concerted deformation mechanism between the steel beam and panel zone was built by increasing the shear deformation of the panel zone so that the rotation demand of the steel beam may be reduced.Nonlinear finite element (FE) models of the steel frame beam-column joints were also established by using MSC.Marc.The results from the FE models fit well with the test data.Based on the reasonability of the FE models，parametric analyses were carried out to explore the relationship between the shear deformation of the panel zone and the deformation of the beam end in the beam-column joints when the story drift ratio is 0.04.The key parameters that affect the deformation of the beam end and the panel zone were identified.A simplified design method of the concerted deformation between the steel beam and panel zone was proposed，which may provide references for seismic design of the steel frame beam-column joints under rare earthquakes.
%K 钢框架 梁柱节点 变形 有限元 抗震设计&lt
%K /br&gt
%K steel frames beam-column joints deformation finite element seismic design
%U http://hdxbzkb.cnjournals.net/ch/reader/view_abstract.aspx?file_no=20170703&flag=1