- 摘 要
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(1 西北農(nóng)林科技大學(xué)水利與建筑工程學(xué)院, 楊凌 712100; 2 中交公路規(guī)劃設(shè)計院有限公司, 北京 100010)
[摘要]為了研究低溫下栓釘連接件的抗剪承載力,通過15個栓釘連接件在低溫下的推出試驗,對栓釘連接件在低溫下的破壞形態(tài)、荷載-位移曲線、抗剪承載力和抗剪剛度進行了研究。結(jié)果表明:低溫下栓釘連接件的破壞形式會由混凝土破壞轉(zhuǎn)變?yōu)樗ㄡ敿魯嗥茐?;隨著溫度降低,栓釘?shù)目辜舫休d力近似呈線性提高,但塑性及延性變差;栓釘?shù)目辜魟偠入S溫度降低而提高,且直徑越大,提升幅度越小。
[關(guān)鍵詞]栓釘連接件; 低溫; 推出試驗; 抗剪承載力; 抗剪剛度
中圖分類號:TU398-7文獻標識碼:A文章編號: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
*交通部西部交通建設(shè)科技項目(2014318363230)。
作者簡介:謝宜琨,碩士研究生,Email:zbxieyikun@163.com。