扩翼式弱轴连接边框节点抗震性能研究.pdf

第 48 卷 第 2 期 西安建筑科技大学学报（自然科学版） Vol.48 No.2 2016 年 4 月 J.Xian Univ. of Arch. Tech. (Natural Science Edition) Apr. 2016 DOI: 10.15986/j.1006-7930.2016.02. 012 扩翼式弱轴连接边框节点抗震性能研究 徐莹璐 1，卢林枫 1，刘子龙 2 （1. 长安大学建筑工程学院，陕西 西安 710061 ；2. 新时代(西安)设计研究院有限公司，陕西 西安 710018 ） 摘要：提出了一种新型的节点域箱形加强式工字形柱弱轴连接，基于此节点形式设计梁端翼缘扩大型边框架节点足尺试件进 行单调荷载试验研究．采用通用有限元软件ABAQUS对此类节点在单调荷载作用下的受力性能进行模拟对比验证后，对此 类节点进行低周反复荷载作用下的一系列有限元变参数模拟分析，研究各种因素对该类节点力学性能的影响．研究结果表明： 扩翼式新型弱轴连接节点在低周反复荷载作用下，塑性转动能力能达到 0.03 rad以上，塑性铰出现在扩大翼缘的末端，柱子 节点域基本处于弹性状态，能较好地满足“强柱弱梁”和“强节点域”的抗震设计理念；我国抗震设计规范中“梁端扩大部 分的直角边长比可取为 1:2 至 1:3”这项规定对扩翼式新型弱轴连接同样适用；给出了蒙皮板尺寸的建议取值． 关键词：弱轴连接；扩翼；试验研究；变参数分析 中图分类号：TU391 文献标志码：A 文章编号：1006-7930(2016)02-0220-05 Study on seismic behavior of widened beam flange weak-axis connections in frame side joint 1 1 2 XU Yinglu , LU Linfeng , LIU Zilong (1.School of Civil Engineering, Chang′an University, Xi′an 710061, China; 2. New Era(Xi′an)Design Engineering Co.,Ltd, Xi′an 710018, China) Abstract: This paper puts forward a new box strengthen-joint region connection for weak axis of I-section column. A full-scale test of frame side joint with widened beam flange connections under monotonic loading was carried out based on the proposed joint. A general finite element software ABAQUS was used to simulate the mechanical behavior of the joints under monotonic loading, and the simulation results were in good agreement with the experimental results. In order to study the effect of various factors on the performance of this kind of joint, a series of parameters analysis under cyclic loading were employed through finite element