单边螺栓连接梁柱加强节点试验研究
Experimental Study on One-Side Bolted Strengthened Beam-to-Column Joints
在T形方颈单边螺栓连接钢梁-钢管柱节点的现有试验研究报道中,柱壁鼓曲变形引起的螺栓拔出破坏,是较为典型的情况。为避免钢管柱壁在梁端弯矩作用下产生弯曲变形,需进一步提高节点的变形能力,文中提出了两类装配式节点加强组件,并对内置加强组件的4个节点试件开展了单调荷载下的静力性能试验,探讨了加强组件类型与组件长度对节点结构响应的影响。试验结果表明:加强组件可有效避免节点发生螺栓拔出破坏,其中双槽钢组件和H型钢组件能使节点的屈服弯矩分别提高8.1%~31.8%和72.1%~72.6%,峰值弯矩分别提高11.6%~21.7%和36.7%~38.1%;建议T形方颈单边螺栓连接钢梁-钢管柱节点使用H型钢外伸组件,组件截面可根据节点内力设计。
In the reported experimental studies on T-head square-neck one-side bolts (TSOBs) bolted beam to square hollow steel (SHS) column joints, bolt pulling-out caused by SHS column wall bulge deformation is typical. To avoid the SHS column wall deformation under the bending moment of the beam end and to improve the joint deformation capacity, two types of assembled strengthening components were proposed in this paper, and static performance tests under monotonic load were carried out on four joints with the strengthening components to explore the influence of the type and length of strengthening components on the joint structural response. The test results show that strengthening components can avoid bolt pulling-out failure, with double-channel component and H-steel component increasing the yield bending moment of the joints by 8.1%~31.8% and 72.1%~72.6%, and the peak bending moment by 11.6%~21.7% and 36.7%~38.1%, respectively. The extended H-steel component is recommended for use in TSOBs bolted beam to SHS column joints, and its cross-section can be designed based on the joint internal forces.
| [1] |
SUN L L,LIANG Z Q,WU L,et al.Experimental and theoretical modeling for predicting bending moment capacity of T-head square-neck one-side bolted endplate to tube column connection[J].Journal of Building Engineering,2021,43:103104.DOI:10.1016/j.jobe.2021.103104. |
| [2] |
SUN L L,LIANG Z Q,WANG Q S,et al.Seismic response on T-head square-neck one-side bolted endplate connection of beam to square tubular column[J].Engineering Structures,2021,246:113077.DOI:10.1016/j.engstruct.2021.113077. |
| [3] |
孙乐乐.T形方颈单边螺栓连接钢梁-方钢管柱节点力学性能与设计方法研究[D].济南:山东大学,2023. |
| [4] |
SUN Lele.Study on structural performance and design method of T-head square-neck one-side bolted beam to SHS column joints[D].Jinan:Shandong University,2023.(in Chinese) |
| [5] |
马强强.装配式梁柱内套筒组合螺栓连接节点力学性能研究[D].青岛:青岛理工大学,2016. |
| [6] |
MA Qiangqiang.Study on mechanical propertiesof fabricated beam-column connection joints using innersleeve composite bolts.Qingdao:Qingdao University of Technology,2016.(in Chinese) |
| [7] |
孙风彬.新型方钢管柱H钢梁内套筒装配连接节点力学性能分析[D].青岛:青岛理工大学,2019. |
| [8] |
SUN Fengbin.Mechanical properties analysis of new type prefabricated inner sleeve connection between square steel tube column and H-beam[D].Qingdao:Qingdao University of Technology,2019.(in Chinese) |
| [9] |
鲁秀秀.装配式方钢管内套筒端板梁柱连接节点力学性能研究[D].青岛:青岛理工大学,2016. |
| [10] |
LU Xiuxiu.Study on mechanical properties of prefabricated inner sleeve end-plate beam-column joint[D].Qingdao:Qingdao University of Technology,2016.(in Chinese) |
| [11] |
王燕,马强强,杨怡亭,装配式钢结构H形钢梁-钢管柱连接节点的力学性能研究[J].建筑钢结构进展,2019,21(3):13-22.DOI:10.13969/j.cnki.cn31-1893.2019.03.002. |
| [12] |
WANG Yan,MA Qiangqiang,YANG Yiting,et al.A study on the mechanical behavior of H-shaped beam-tubular column connections of prefabricated steel structures[J].Progress in Steel Building Structures,2019,21(3):13-22.DOI:10.13969/j.cnki.cn31-1893.2019.03.002.(in Chinese) |
| [13] |
国家市场监督管理总局,国家标准化管理委员会.金属材料 拉伸试验 第1部分:室温试验方法:GB/T 228.1—2021[S].北京:中国标准出版社,2021. |
| [14] |
State Administration for Market Regulation,Standardization Administration of the People's Republic of China.Metallic Materials—Tensile Testing:Part 1:Method of Test at Room Temperature:GB/T 228.1—2021[S].Beijing:Standards Press of China,2021.(in Chinese) |
| [15] |
European Standard.Eurocode 3:Design of Steel Structures-Part 1-8:Design of Joints:EN 1993-1-8[S].Brussels:European Standard,2004. |
国家自然科学基金(52408166)
山东省自然科学基金(ZR2024QE243)
山东省青年科技人才托举工程项目(SDAST2024QTA024)
山东省住房城乡建设科技计划项目(2024KYKF-JZGYH101)
中央高校基本科研业务费(3072024JJ2701)
/
| 〈 |
|
〉 |