T形件初始抗弯刚度简化计算研究
Research on Simplified Calculation of Initial Bending Stiffness of T-Stubs
周超 1牟星 2周艳 3吴子超3
作者信息
- 1. 青岛工学院建筑工程学院,山东青岛 266300
- 2. 东莞城市学院城建与环境学院,广东东莞 523419
- 3. 广东建设职业技术学院土木工程学院,广州 510440
- 折叠
摘要
通过已有的高强螺栓连接T形件试验和有限元分析对比,验证了有限元模型的有效性.在此基础上,根据有限元和理论分析,简化得到T形件初始抗弯刚度力学模型,给出了在弹性阶段T形件的有效长度计算表达式,得到了 T形件初始抗弯刚度计算公式.最后,选取了考虑T形件翼缘宽度、翼缘厚度、螺栓直径、螺栓等级和螺栓间距等因素变化的35组试件进行有限元参数化分析,将初始抗弯刚度理论计算结果与有限元计算结果进行比较,误差大部分在15％以内,验证了理论计算公式的有效性.
Abstract
The validity of the finite element model was verified by comparing the existing test data and finite element analysis results of T-stubs connected with high-strength bolts.According to the finite element anal-ysis and theoretical analysis,the mechanical model of initial bending stiffness of T-stubs proposed in Euro-code 3 was simplified,and the expression for calculating the effective length of T-stubs in elastic stage was obtained,the calculation formula of initial bending stiffness of T-stubs was derived.Finally,35 groups of T-stubs considering the changes of flange width,flange thickness,bolt diameter,bolt grade and bolt spacing were selected to carry out finite element parametric analysis.The theoretical calculation results of initial bending stiffness were compared with those of finite element analysis,and the errors were mostly within 15％,which verified the validity of theoretical calculation formula.
关键词
T形件/初始抗弯刚度/有效长度/有限元Key words
T-stubs/initial bending stiffness/effective length/finite element引用本文复制引用
基金项目
广东省普通高校青年创新人才项目(2020KQNCX124)
出版年
2024
NETL
NSTL
万方数据