方钢管柱-H形钢梁铸钢节点初始转动刚度研究

发布时间：2018-04-07 16:11

本文选题：方钢管柱　切入点：H形钢梁　出处：《天津大学学报(自然科学与工程技术版)》2017年S1期

【摘要】：为研究方钢管柱-H形钢梁铸钢连接节点的初始转动刚度,本文在基于变形协调原则的节点承载力理论的基础上,采用变形叠加方法,提出梁柱连接铸钢节点初始转动刚度理论,并推导了初始转动刚度公式.由初始转动刚度理论及公式可知,影响节点初始转动刚度的主要因素是钢管柱尺寸以及梁的高度等.通过改变柱壁厚等参数对5个足尺试件进行分析,其初始转动刚度的试验结果、数值模拟结果与公式计算结果吻合较好,验证了初始转动刚度理论及公式.分别选取钢管柱外径为200,mm、250,mm、300,mm,钢管柱壁厚为8,mm、10,mm、12,mm,铸钢连接件环板高度为35,mm、40,mm、45,mm,H形钢梁梁高为194,mm、219,mm、244,mm,铸钢节点所在层层高为3,000,mm、4,000,mm、5,000,mm,采用ABAQUS软件进行参数化数值分析.参数化数值模拟结果与初始转动刚度公式计算结果吻合较好,其比值在0.895~0.958之间,进一步验证了初始转动刚度理论及公式的有效性.
[Abstract]:In order to study the initial rotational stiffness of cast steel joint of square steel pipe column H-shaped steel beam, based on the theory of joint bearing capacity based on the principle of deformation coordination, this paper puts forward the initial rotational stiffness theory of cast steel joint of Liang Zhu connection based on deformation superposition method.The formula of initial rotational stiffness is derived.According to the theory and formula of initial rotational stiffness, the main factors affecting the initial rotational stiffness of joints are the size of steel tube column and the height of beam.The experimental results of the initial rotational stiffness of five full-scale specimens are analyzed by changing the wall thickness of the column. The numerical simulation results are in good agreement with the calculated results, and the initial rotational stiffness theory and formula are verified.The results of parameterized numerical simulation are in good agreement with the calculation results of the initial rotational stiffness formula, the ratio of which is between 0.895and 0.958, which further verifies the validity of the initial rotational stiffness theory and formula.
【作者单位】：天津大学建筑工程学院;滨海土木工程结构与安全教育部重点实验室(天津大学);
【基金】：国家自然科学基金资助项目(51525803) 中国博士后科学基金资助项目(2016M601262)
【分类号】：TU391

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