新型模块化钢框架板式内套筒连接节点力学性能研究
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摘要
采用ABAQUS有限元分析软件建立7个新型模块化钢框架板式内套筒连接节点有限元计算模型,通过改变连接板和内套筒厚度,对节点试件关键位置应力路径进行分析。研究结果表明:模块化钢框架板式内套筒连接节点在静力荷载作用下钢梁与方钢管柱连接区域形成塑性铰,连接板孔洞边缘区域有应力集中现象,建议在孔洞四周做圆弧处理;改变连接板厚度和内套筒厚度对节点承载力影响不大;增加内套筒厚度可以改善内套筒局部应力状态,减小内套筒区域的应力集中现象。
By changing the thickness of connection plate and inner sleeve,seven finite element models of new plateinner sleeve joint of the steel modular frame were established by ABAQUS finite element analysis software. The analysis was carried out in terms of the stress at the key position of each specimen. The results showed that the plastic hinge was formed in the connecting area of the steel beam and the square steel column under the static load and stress concentration occurred at the edge area of the aperture of the connection plate. It was suggested that the holes should be treated with rounded corners; the change in the thickness of the connection plate and the inner sleeve had little effect on the bearing capacity of the joint; increasing thickness of the inner sleeve could improve the local stress state and reduce the stress concentration in the inner sleeve area.
By changing the thickness of connection plate and inner sleeve,seven finite element models of new plateinner sleeve joint of the steel modular frame were established by ABAQUS finite element analysis software. The analysis was carried out in terms of the stress at the key position of each specimen. The results showed that the plastic hinge was formed in the connecting area of the steel beam and the square steel column under the static load and stress concentration occurred at the edge area of the aperture of the connection plate. It was suggested that the holes should be treated with rounded corners; the change in the thickness of the connection plate and the inner sleeve had little effect on the bearing capacity of the joint; increasing thickness of the inner sleeve could improve the local stress state and reduce the stress concentration in the inner sleeve area.
引文
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[3]CNN.High-Rise Housing Going Modular[EB/OL].2012-02-01.http://news.blogs.cnn.com/2012/02/01/High-rise-housing-going-modular/
[4]郑小东.住宅67,蒙特利尔,魁北克省,加拿大[J].世界建筑,2011(8):32-37.
[5]胡文峰.集成建筑探研[D].长沙:中南大学,2011.
[6]曲可鑫.钢结构模块化建筑结构体系研究[D].天津:天津大学,2014.
[7]黄永胜.模块化建筑的结构设计与BIM技术应用研究[D].广州:广州大学,2016.
[8]秦雅菲.模块化可移动钢结构房屋设计与施工[C]//第十二届全国现代结构工程学术研讨会暨第二届全国索结构技术交流会论文集.天津:2012.
[9]孙瑛志,杨晓杰.模块建筑槽钢组合柱长细比与截面惯性矩研究[J].钢结构,2016,31(5):1-5.
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