采用新型抗剪连接件的型钢混凝土柱轴压性能试验研究

李帼昌; 曹凯奇; 杨志坚; 邱增美

doi:10.13204/j.gyjzG21031004

采用新型抗剪连接件的型钢混凝土柱轴压性能试验研究

doi: 10.13204/j.gyjzG21031004

沈阳建筑大学土木工程学院, 沈阳 110168

基金项目:

国家重点研发计划资助(2017YFC0703407)。

详细信息

作者简介:
李帼昌,女,1964年出生,博士,教授,博士生导师。电子信箱:liguochang0604@sina.com

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- 文章访问数: 127
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- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2021-03-10
- 网络出版日期: 2022-07-23
- 刊出日期: 2022-07-23

Experimental Research on Mechanical Properties of Steel Reinforced Concrete Columns with New Shear Connectors Under Axial Compression

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

摘要

摘要: 为研究轴心受压状态下新型抗剪连接件对型钢混凝土柱力学性能的影响,以抗剪连接件形式、间距为变化参数,对6根采用新型抗剪连接件的型钢混凝土短柱进行了轴心受压试验,分析了试件的破坏形态、荷载-位移曲线、荷载-应变曲线、延性系数以及轴力分配规律。研究结果表明:设置栓钉、π形开孔板、π形CR抗剪连接件对强约束区混凝土承担荷载的比例影响较大,且试件延性均有所提高,其中设置π形CR抗剪连接件的试件SRCDC-1延性最好,与无抗剪连接件试件相比,其延性系数提高了8.4%。最后,在考虑箍筋、型钢对混凝土约束作用的基础上,对布置新型抗剪连接件的型钢混凝土柱轴压承载力进行了计算,并给出了相关计算建议。
- 抗剪连接件 /
- 型钢混凝土柱 /
- 轴心受压 /
- 试验研究 /
- 承载力
Abstract: In order to study the influence of new shear connectors on the mechanical properties of steel reinforced concrete columns under axial compression, six short steel reinforced concrete columns with new shear connectors were tested under axial compression with the form and spacing of shear connectors as variable parameters. The failure mode, load-displacement curve, load-strain curve, ductility coefficient and axial force distribution of the specimens were analyzed. The results showed that the setting of stud, π-type perforated panel and π-type CR shear connector had a great influence on the proportion of concrete bearing load in the strong restraint area, and the ductility of the specimens was improved. The ductility of SRCDC-1 with π-type crestbond shear connector was the best and its ductility coefficient was increased by 8.4% compared with the specimens without shear connector. Finally, the bearing capacity of Steel reinforced concrete columns with new shear connectors under axial compression was calculated on the basis of considering the restraint effect of stirrups and section steel on concrete, and relevant calculation suggestions were given.
- shear connector /
- steel reinforced concrete column /
- axial compression /
- experimental study /
- bearing capacity

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