[1]秦华乾,王振山,杨勇,等.带翼缘双折型钢板剪力键粘结滑移及承载力计算研究[J].地震工程与工程振动,2022,42(02):212-224.[doi:10.13197/j.eeed.2022.0221]
 QIN Huaqian,WANG Zhenshan,YANG Yong,et al.Research on bond-slip performance and bearing capacity calculation of double-fold steel plate shear key with flange[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2022,42(02):212-224.[doi:10.13197/j.eeed.2022.0221]
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带翼缘双折型钢板剪力键粘结滑移及承载力计算研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
42
期数:
2022年02期
页码:
212-224
栏目:
论文
出版日期:
2022-04-30

文章信息/Info

Title:
Research on bond-slip performance and bearing capacity calculation of double-fold steel plate shear key with flange
作者:
秦华乾2 王振山12 杨勇2 刘云贺12 郭宏超2
1. 西安理工大学 西北旱区生态水利工程国家重点实验室, 陕西 西安 710048;
2. 西安理工大学 土木建筑工程学院, 陕西 西安 710048
Author(s):
QIN Huaqian2 WANG Zhenshan12 YANG Yong2 LIU Yunhe12 GUO Hongchao2
1. State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, China;
2. School of Civil and Architectural Engineering, Xi’an University of Technology, Xi’an 710048, China
关键词:
剪力键粘结滑移破坏模式极限承载力设计方法
Keywords:
shear keybond slipfailure modeultimate bearing capacitydesign method
分类号:
TU375.2
DOI:
10.13197/j.eeed.2022.0221
摘要:
文中提出了一种带翼缘双折型钢板剪力键,旨在获得较好的承载力与变形能力;共设计6个试件,采用推出试验方法,研究该剪力键的破坏模式、受力性能、不同灌浆料以及贯穿钢筋的影响规律等;结果发现:该剪力键约束下,混凝土板开裂区域以剪力键为中心呈梯形分布,开裂面积达到1/2板面以上,显著高于栓钉连接形式;剪力键整体发生变形,其中孔外侧腹板屈曲明显。该剪力键滑移后,刚度衰减较小,承载力增长较快;与栓钉相比,普通混凝土叠合板剪力键的承载力提高50%以上,采用高强灌浆料后可提高1倍以上;同时,该剪力键在承载力达到峰值后,刚度及强度下降缓慢,表现出较好的变形能力。最后,基于双折型钢板剪力键破坏机理,建立简化力学模型,并提出承载力实用计算方法,与试验结果吻合较好。
Abstract:
In this paper,a double-folded steel plate shear key with flange was proposed to obtain better bearing capacity and deformation capacity. A total of 6 specimens were designed and the push-out test method was adopted to study the failure mode,mechanical performance,influence law of different grouting materials and penetrating reinforcement of the shear key.The results show that:under the constraint of this shear connector,the cracking area of the concrete slab is distributed in trapezoidal form with shear key as the center. The cracking area reaches more than 1/2 of the concrete slab,which is significantly higher than the type of bolted joint.The shear key is deformed as a whole,and the buckling of the pore lateral web is obvious.After sliding,the stiffness attenuation is small and the bearing capacity can be improved continuously.Compared with the bolt,the bearing capacity of the shear key of the composite slab of ordinary concrete can be increased by more than 50%,and it can be increased by more than one time after using the high-strength grouting material. After the bearing capacity reaches the peak,the stiffness and strength of the shear piece decrease slowly,showing better deformation capacity. Finally,a simplified mechanical model is established based on the failure mechanism of shear key of double-folded steel plate,and a practical calculation method of bearing capacity is proposed,which is in good agreement with the test results.

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备注/Memo

备注/Memo:
收稿日期:2021-1-22;改回日期:2021-5-21。
基金项目:国家自然科学基金项目(51978571)
作者简介:秦华乾(1996-),男,硕士研究生,主要从事组合结构研究.E-mail:a58391390@163.com
通讯作者:王振山(1980-),男,副教授,博士,主要从事新型建筑材料与组合结构研究.E-mail:wangdayuwang@126.com
更新日期/Last Update: 1900-01-01