- 摘 要
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(1 西北农林科技大学水利与建筑工程学院, 杨凌 712100; 2 中交公路规划设计院有限公司, 北京 100010)
[摘要]为了研究低温下栓钉连接件的抗剪承载力,通过15个栓钉连接件在低温下的推出试验,对栓钉连接件在低温下的破坏形态、荷载-位移曲线、抗剪承载力和抗剪刚度进行了研究。结果表明:低温下栓钉连接件的破坏形式会由混凝土破坏转变为栓钉剪断破坏;随着温度降低,栓钉的抗剪承载力近似呈线性提高,但塑性及延性变差;栓钉的抗剪刚度随温度降低而提高,且直径越大,提升幅度越小。
[关键词]栓钉连接件; 低温; 推出试验; 抗剪承载力; 抗剪刚度
中图分类号:TU398-7文献标识码:A文章编号:1002-848X(2020)09-0086-06
Experimental study on shear resistance of stud connectors at low temperature
XIE Yikun1, FANG Guoqiang2, ZHANG Ning1, YAO Xiaochao1
(1 School of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China;2 CCCC Highway Consultants Co., Ltd., Beijing 100010, China)
Abstract:In order to study the shear bearing capacity of stud connectors at low temperature, through the push-out test of 15 stud connectors at low temperature, the failure mode, load-displacement curve, shear capacity and shear stiffness of stud connectors at low temperature were studied. The results show that the failure mode of the bolt-and-nail connector will change from concrete failure to stud shear failure at low temperature; as the temperature decreases, the shear bearing capacity of the stud increases approximately linearly, but the plasticity and ductility deteriorate;shear stiffness increases with decreasing temperature, and the larger the diameter, the smaller the increase
Keywords:stud connection; low temperature; push-out test; bearing capacity; shear stiffness
*交通部西部交通建设科技项目(2014318363230)。
作者简介:谢宜琨,硕士研究生,Email:zbxieyikun@163.com。