预制混凝土外挂墙板与钢框架摩擦耗能新型连接节点力学性能试验研究

隋伟宁; 马勇; 杨海涛; 吴金国

doi:10.13204/j.gyjzG22011501

预制混凝土外挂墙板与钢框架摩擦耗能新型连接节点力学性能试验研究

doi: 10.13204/j.gyjzG22011501

沈阳建筑大学土木工程学院, 沈阳 110168

基金项目:

辽宁省教育厅高等学校创新人才基金项目(LR2020049)。

辽宁省科技厅省自然科学基金项目(2020-MS-221)

详细信息

作者简介:
隋伟宁,女,1979年出生,博士,教授。电子信箱:416856649@qq.com

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出版历程
- 收稿日期: 2022-01-15

Experimental Study on Mechanical Properties of a New Connection Joint Between PC External Wall Panel and Steel Frame with Frictional Energy Dissipation

School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

摘要

摘要: 研究了铝摩擦板开孔形式、螺栓预紧力对摩擦耗能新型连接节点力学性能的影响,为预制混凝土(PC)外挂墙板节点的设计与工程应用提供参考。为获得PC外挂墙板与框架间摩擦耗能新型连接节点的力学性能,选取了4组典型的试验试件进行拟静力加载试验。试验加载过程中观察到长圆孔铝摩擦板随着中心钢板水平位移的增加而滑动,圆孔铝摩擦板未观察到明显的滑动现象,加载结束后,铝摩擦板表面观察到明显的磨损现象,长圆孔铝摩擦板相对挤出4.5 mm,而圆孔铝摩擦板相对位置保持不变。研究表明:对于采用圆孔铝摩擦板的节点,随着预紧力的增加,临界摩擦系数减小,节点处相对滑移减小;摩擦耗能新型连接节点采用单圆孔铝摩擦板时综合性能更加优异;虽然摩擦系数和平均摩擦系数在加载过程中不恒定,但是整体耗能性能不衰减,表明该类摩擦耗能型节点具有很好的耗能性能。
- 钢框架 /
- PC外挂墙板 /
- 摩擦耗能新型连接节点 /
- 能量耗散性能 /
- 铝摩擦板
Abstract: The effects of the aluminum friction plate opening form and bolt preload on the mechanical properties of the new friction energy dissipation connection joints were studied to provide reference for the design and engineering application of PC (precast concrete) external wall panel joints. To obtain the mechanical properties of the new friction energy dissipation connection joints between PC external wall panels and frames, four sets of typical test specimens were selected for the proposed static loading test; during the loading test, it was observed that the long round-hole aluminum friction plate slid with the increase of the horizontal displacement of the central steel plate. The friction plate slides with the increase of the horizontal displacement of the central steel plate, and no obvious sliding phenomenon for the round-hole aluminium friction plate; after the loading, obvious wear was observed on the surface of the aluminium friction plate, and the long round-hole aluminium friction plate was extruded by 4.5 mm relatively, while the relative position of the round-hole aluminium friction plate remains unchanged; for the joint with the round-hole aluminium friction plate, with the increase of the preload force, the critical friction coefficient, and the relative slip at the joint decreased. The new type of friction energy dissipation connection joint with the single round-hole aluminum friction plate had better comprehensive performance. Although the friction coefficient and the average friction coefficient were not constant during the loading process, the overall energy dissipation performance did not deteriorate, indicating that the type of friction dissipation joint has good energy dissipation performance.
- steel frame /
- precast concrete external wall /
- new friction energy dissipation connection joint /
- energy dissipation performance /
- aluminum friction plate

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