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
刘红波 1邱灿 2原燕鹏 2高修建 3井司南 3刘文锐 3陈志华2
作者信息
- 1. 天津大学建筑工程学院,天津 300072;河北工程大学土木工程学院,河北邯郸 056000
- 2. 天津大学建筑工程学院,天津 300072
- 3. 中国铁路设计集团有限公司,天津 300308
- 折叠
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.
Abstract
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 simula-tions,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Key words
inverted trapezoidal steel pipe/intersecting joint/section correction factor/parametric analysis引用本文复制引用
基金项目
河北省全职高端人才引进项目(2020HBOZYC013)
出版年
2024
NETL
NSTL
万方数据