摘要
冷弯薄壁型钢结构墙体-楼盖连接中构件数量大,合理简化各构件间的连接作用是建立正确有限元模型的关键,已有研究表明,轴压比对梁柱连接体系抗震性能影响较大。本文结合冷弯壁型钢结构墙体-楼盖连接节点试验,采用有限元计算方法对试验试件进行计算,并进行了改变轴压比参数的分析。结果表明:1螺钉耦合加界面接触建模方法计算结果与试验结果吻合,该模型能用于冷弯薄壁型钢结构墙体-楼盖连接节点力学性能分析;2墙体轴压比对连接节点的力学性能影响很大,轴压比越大,节点承载力越小,耗能能力越低,建议设计轴压比不超过0.6。
The rational finite element analysis model can conduct a detailed parametric analysis, and get the influence to the model induced by parameter variation. Cold-formed thin-walled steel wall-floor connection component ranges, and the connection is complex, rational connection between the various components is the key to establish a correct finite element model. In this paper, based on the cold-formed thin-walled steel wall-floor joint test, explore a reasonable simplified finite element method and conducts a parametric analysis. The results showed that： ① Screw coupling plus interfacial contact modeling results coincides with the experimental results, the model can be used for cold-formed thin-walled steel wall-floor joint mechanical analysis. ② Wall axial compression ratio has great influence on the mechanical properties of the joint：the greater of axial compression ratio,the smaller of joint capacity and the lower of energy dissipation capacity. Proposed design of axial compression ratio is no more than 0. 6.
出处
《四川建筑科学研究》
北大核心
2015年第2期21-25,共5页
Sichuan Building Science
基金
四川省科技支撑计划(2011GZ0043)
四川省教育厅应用基础项目(12ZB157)
关键词
冷弯薄壁型钢
连接节点
建模方法
轴压比
cold-formed thin-walled steel
joint
modeling
axial compression ratio
