(1 厦门大学建筑与土木工程学院, 厦门 361005; 2 厦门大学建筑设计研究院有限公司, 厦门 361005;3 阳光城集团股份有限公司, 厦门 361005)

摘要: 箱形截面梁柱连接节点研究较少,提出一种新型柱端水平板-螺栓连接节点用以小型钢框架结构快速装配。 通过方钢管柱端水平板-螺栓连接节点试件与传统内隔板全焊接节点试件在低周往复荷载作用下的对照试验,结合数值模拟,研究节点的抗震性能。 结果表明:新型节点试件的滞回曲线更加饱满,屈服荷载较传统节点试件提高 31. 61%、极限承载力提高 16. 18%、等效黏滞阻尼系数提升 23. 82%;方钢管柱端水平板-螺栓连接节点屈服荷载、极限荷载与模拟结果基本一致,误差约为 5%;加劲肋可以有效降低柱腹板与水平端板处焊缝应力,增加水平端板厚度可以提高节点极限承载力,有效降低螺栓杆处应力。 并分析得出方钢管柱端水平板-螺栓连接节点的延性提高,脆性断裂风险降低,具有良好的抗震性能;在节点设计中宜设置柱与端板之间的加劲肋,水平端板厚度不宜小于 16mm。

关键词: 箱形柱梁框架节点; 滞回曲线; 数值模拟; 抗震性能

中图分类号:TU391 文献标志码:A 文章编号:1002-848X(2023)12-0015-07

DOI:10. 19701 / j. jzjg. 20201706

Experimental study on seismic performance of small square steel tube column end horizontal plate-bolt connection joints

ZHANG Pengcheng1,2, HU Lepeng1, ZHOU Yuan3

(1 Academy of Architecture and Civil Engineering, Xiamen University, Xiamen 361005, China; 2 Architecture Design Institute of Xiamen University, Xiamen 361005, China; 3 Yango Group Co. , Ltd. , Xiamen 361005, China)

Abstract: There are few researches on the beam-column connection joint of box section. A new horizontal plate-bolt joint of column end was proposed for fast assembly of small steel frame structures. The seismic performance of the joint was studied by the control test of the square steel tube column end horizontal plate-bolt connection joint specimen and the traditional welded joint specimen with the inner diaphragm under the low cycle reciprocating load, combined with the numerical simulations. The results show that the new joint specimens have fuller hysteresis curves, and the yield load, ultimate bearing capacity and equivalent viscous damping coefficient increase by 31. 61%, 16. 18% and 23. 82% compared with the traditional node specimens. The yield load and ultimate load of the new joint are basically consistent with the simulation results, and the error is about 5%. The stiffener can effectively reduce the weld stress between the column web and the end plate, and increase the thickness of the horizontal end plate can improve the ultimate bearing capacity of the joint and effectively reduce the stress at the bolt rod. And the analysis shows that the square steel tube column end horizontal plate-bolt connection joint has improved ductility, reduced the risk of brittle fracture, and has good seismic performance. In the design of the joint, it is appropriate to set the stiffener between the column and the end plate, and the thickness of the horizontal end plate should not be less than 16mm.

Keywords:joint of box column-box beam framework; hysteresis curve; numerical simulation; seismic performance

[引用本文] 张鹏程,胡乐朋,周源. 小型方钢管柱端水平板-螺栓连接节点抗震性能试验研究[J]. 建筑结构,2023,53(12):15-21,60. ZHANG Pengcheng ,HU Lepeng,ZHOU Yuan. Experimental study on seismic performance of smallsquare steel tube column end horizontal plate-bolt connection joints[J]. Building Structure,2023,53(12):15-21,60.