(1 北京工业大学城市建设学部, 北京 100124; 2 河北省建筑科学研究院有限公司, 石家庄 050021)

摘要: 研发了装配式 π 形连接件和双 L 形带斜向加劲肋连接件轻钢框架梁柱节点,进行了 10 个足尺轻钢框架梁柱节点的低周反复荷载试验,包括 7 个 π 形连接件节点、2 个双 L 形带斜向加劲肋连接件节点以及 1 个普通 H 型钢梁腹板栓接、翼缘焊接节点。 设计参数包括节点构造,π 肢长度以及框架柱的截面类型,比较了不同节点的破坏形态、滞回特性、承载力、刚度退化、耗能能力及应变特征。 结果表明:π 形连接件节点与普通 H 型钢梁腹板栓接、翼缘焊接节点相比,初始刚度和承载力显著提高;π 形连接件节点与双 L 形带斜向加劲肋连接件节点相比,初始刚度和承载力明显提高;增大 π 肢长度可提高节点初始刚度及承载力;钢管混凝土柱节点比钢管柱节点的刚度及耗能能力明显提高;H 型钢柱节点刚度低于钢管混凝土柱节点。 π 形连接件节点和双 L 形带斜向加劲肋连接件节点构造简单、便于装配、抗震性能优越,可用于低多层装配式轻钢框架结构,其设计思路也可用于其他装配式钢框架结构。

关键词: 装配式轻钢框架; π 形连接件; 双 L 形带斜向加劲肋连接件; 梁柱节点; 抗震性能

中图分类号:TU398 文献标志码:A 文章编号:1002-848X(2022)23-0046-10

DOI:10. 19701 / j. jzjg. HJZL2207

Experimental investigation on seismic behavior of prefabricated lightweight steel composite structure beam-column joints

CAO Wanlin1, YANG Zhaoyuan1, ZHAO Shiyong2

(1 Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing100124, China; 2 Hebei Academy of Building Research Co. , Ltd. , Shijiazhuang 050021, China)

Abstract: The prefabricated π-shaped connectors and double L-band oblique stiffening rib connector lightweight steelcomposite structure beam-column joints have been developed. The low-week repeated load tests of ten full scaleprefabricated lightweight steel composite structure beam-column joints have been carried out, included seven jointspecimens with π-shaped connector joints, two L-band oblique stiffening rib connector joints, and one ordinary H-shapedsteel beam web bolt and flange welding joint. The experimental variables include the joint construction, length of π-shapedconnector, and the frame column section types. The failure characteristic, hysteretic property, bear capacity, stiffnessdegradation, energy dissipation and strain characteristics of different joints were analyzed. The results show that the initialstiffness and bearing capacity of π-shaped connector joints are significantly higher than those of H-shaped steel beam webbolt and flange welding joint. The initial stiffness and bearing capacity of π-shaped connector joints are obviously increasedcompared with those of double L-band oblique stiffening rib connector joints. Increasing length of π-shaped connector canimprove initial stiffness and bearing capacity of joints. The stiffness and energy dissipation capacity of concrete filled steeltubular column joints are obviously higher than those of steel tubular column joints. The stiffness of H-shaped steel columnjoints is lower than the joints with concrete filled steel tubular column. The π-shaped joint and double L-band obliquestiffening rib connector joints have the advantages of simple structure, high assembly rate, and high seismic performance.The π-shaped connector joints can be used in low multi-storey prefabricated lightweight steel composite structures anddesign idea can also be used for some other prefabricated steel frame structures.

Keywords:prefabricated lightweight steel frame; π-shaped connector joint; double L-band oblique stiffening rib connectorjoint; beam-column joint; seismic performance

∗“十三五”国家重点研发计划( 2018YFD1100903)。

第一作者:曹万林,博士,教授,主要从事工程抗震研究,Email: wlcao@ bjut. edu. cn。

[引用本文] 曹万林,杨兆源,赵士永. 装配式高性能轻钢框架梁柱节点抗震性能试验[ J]. 建筑结构,2022,52(23 ): 46-55. CAO Wanlin, YANG Zhaoyuan, ZHAO Shiyong. Experimental investigation on seismic behavior ofprefabricated lightweight steel composite structure beam-column joints[J]. Building Structure,2022,52(23):46-55.