深圳大运综合交通枢纽站房钢结构相贯节点试验与数值模拟  

Experiments and Numerical Simulations for the Intersecting Joints of the Steel Structure of Shenzhen Universiade Comprehensive Transportation Hub Station

作　　者：刘红波[1,3] 邱灿 原燕鹏 高修建 井司南 刘文锐 陈志华 LIU Hongbo;QIU Can;YUAN Yanpeng;GAO Xiujian;JING Sinan;LIU Wenrui;CHEN Zhihua(School of Civil Engineering,Tianjin University,Tianjin 300072,China;China Railway Design Corporation,Tianjin 300308,China;School of Civil Engineering,Hebei University of Engineering,Handan 056000,China)

机构地区：[1]天津大学建筑工程学院,天津300072 [2]中国铁路设计集团有限公司,天津300308 [3]河北工程大学土木工程学院,河北邯郸056000

出　　处：《工业建筑》2024年第8期78-86,共9页Industrial Construction

基　　金：河北省全职高端人才引进项目(2020HBOZYC013)。

摘　　要：为研究深圳大运综合交通枢纽站房钢结构的圆主管倒梯形支管相贯节点的受力性能,对1个足尺寸节点试件开展了加载试验,并采用有限元软件ABAQUS进行数值模拟,试验结果与数值模拟结果拟合较好,节点在设计荷载下处于弹性状态,2.3倍设计荷载下节点无法继续承载进而发生破坏。基于验证可靠的有限元模型,研究了相关参数对节点承载力的影响规律:增大支管上下翼缘宽度与主管外径之比、支管与主管轴线之间夹角可以提高节点承载力,此外提出了倒梯形截面支管相贯节点的承载力截面修正系数计算公式,为工程设计提供了依据。To investigate the mechanical properties of the circular main pipe intersecting with the inverted trapezoidal branch pipe at the station building of Shenzhen Universiade Comprehensive Transportation Hub,full-scale joint specimens were subjected to loading tests,and numerical simulations were conducted by using the ABAQUS finite element software.The experimental results agreed well with the numerical simulations,demonstrating elastic behavior under design loads but failure occurred at 2.3 times the design load.Utilizing validated finite element models,the study examined the influence of various parameters on the bearing capacity of joints.Increasing the ratio of the flange width of the branch pipe to the outer diameter of the main pipe,as well as the angle between the axes of the branch pipe and the main pipe,could enhance the bearing capacity of the joint.Furthermore,a formula for calculating the bearing capacity correction factor of inverted trapezoidal section intersecting joints was proposed,offering a foundation for engineering design considerations.

关 键 词：倒梯形钢管 相贯节点 截面修正系数 参数化分析 

分 类 号：TU392.3[建筑科学—结构工程]