钢桁架全螺栓连接板节点受力性能研究

作者：黄威振¹,段先军²,王曙光²,张国军¹,李继光²,刘鑫刚¹,罗宝林²

作者简介：

黄威振,工程师,E-mail: huangweizhen0813@ 126. com

作者单位：

1. 中国航空规划设计研究总院有限公司,北京 100120;2. 北京城建集团有限责任公司,北京 100088

基金项目：

∗2023 北京市国资委国有资本经营预算支持市属国企创新团队项目;北京城建集团有限责任公司创新项目

摘要：

海外某大型航站楼屋盖大跨度钢桁架斜腹杆采用全高强螺栓现场连接板节点,通过试验对比研究,验证原设计节点受力性能安全可靠。在规范允许范围内,针对原设计节点的螺栓群分布进行优化,试验结果表明,优化后的连接板节点承载力提高 24.4%。在试验研究基础上,对不同连接板厚度及螺栓群分布的连接板节点进行数值分析,结果表明,通过增加插板厚度可提高连接区稳定承载力。通过分析连接板应力传递规律,提出适用于本节点的连接板应力修正计算方法。

关键词：航站楼;屋盖;钢桁架;连接板;节点;设计;试验;数值模拟

English：

The inclined web components of the large-span steel trusses in the roof of a large overseasterminal building adopt on-site connection plate joints with fully high-strength bolts. Through comparativeexperimental studies, the original design of the joints was verified to be safe and reliable in terms ofmechanical performance. Within the scope permitted by the code, the bolt group distribution of theoriginal design was optimized, and the test results showed that the bearing capacity of the optimizedconnection plate joints increased by 24.4%. Based on the experimental research, numerical analysis wasconducted on connection plate joints with different plate thicknesses and bolt group distributions. Theresults indicated that increasing the thickness of the insert plate could enhance the stability and bearingcapacity of the connection zone. By analyzing the stress transfer mechanism of the connection plates, amodified calculation method for connection plate stress applicable to this type of joint was proposed.

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