金属预埋吊件剪切力学性能试验研究  

Experimental study on shear mechanical behavior of metal anchors for lifting and handling

作　　者：孟宪宏[1] 潘月 戴承良 姜波 MENG Xianhong;PAN Yue;DAI Chengliang;JIANG Bo(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China;China Academy of Building Research,Beijing 100013,China)

机构地区：[1]沈阳建筑大学土木工程学院,沈阳110168 [2]中国建筑科学研究院有限公司,北京100013

出　　处：《建筑结构》2024年第3期26-30,共5页Building Structure

基　　金：“十三五”国家重点研发计划资助(2016YFC0701700)。

摘　　要：为确定可行的金属预埋吊件(简称预埋吊件)剪切试验方法以及为安全系数提供可靠依据,对100、150mm两种不同边距的预埋吊件混凝土试件进行抗剪试验研究。研究预埋吊件的受剪力学性能,测量楔形体破坏角度,分析荷载-位移曲线,探究混凝土楔形体破坏的抗剪极限承载力与预埋吊件的物理特性之间的关系。结果表明:试验中所有预埋吊件均发生混凝土楔形体破坏,其角度与理想状态下的破坏角度接近;预埋吊件的直径、预埋到混凝土中的深度、预埋吊件轴心到剪力垂直边缘的距离与抗剪极限承载力之间均呈正相关。In order to determine the feasible shear test method of metal anchors for lifting and handling(refer to embedded anchor)and provide the basis for reliable safety factor,the shear test of embedded anchor of concrete specimens with different sides of 100mm and 150mm was carried out.The shear mechanical behavior of the embedded anchor,the wedge failure angle was measured,the load⁃displacement curve was analyzed,and the relationship between the shear ultimate bearing capacity of the concrete wedge failure and the physical properties of the embedded anchor was investigated.The results show that the concrete wedge failure occurs in all the embedded anchor in the test,and the failure angle is close to that in the ideal condition.The diameter of the embedded anchor,the burial depth of the embedded hanging in concrete,the distance between the axis of embedded anchor and the vertical edge of the shear force are all positively correlated with shear ultimate bearing capacity.

关 键 词：金属预埋吊件 混凝土 楔形体破坏 剪切试验 边距 抗剪极限承载力 

分 类 号：TU375[建筑科学—结构工程]