机械锚固对锚杆锚固力影响的试验研究  

The experimental study of the influence of the mechanical anchoring on anchor anchoring force

作　　者：王学蕾[1] 毕全超 张铭修 饶强[1] 付之信 

机构地区：[1]河北建筑工程学院,河北张家口075000

出　　处：《山西建筑》2017年第18期46-47,共2页Shanxi Architecture

基　　金：河北建筑工程学院研究生创新基金(编号:XA201709);河北省科技厅计划项目(编号:15275416);河北省教育厅青年基金(编号:QN2014136);张家口市交通局项目(路堑边坡锚固结构在冻融循环下的力学行为及灾害预防研究;编号:16033)

摘　　要：通过对9组试件进行拉拔试验,研究机械锚固对锚杆锚固力的影响并得出如下结论:弯锚可以增加锚固力,但效果不明显;在贴焊钢筋直径和长度相同的情况下,对称贴焊要比单侧贴焊的最大锚固力大一些;贴焊钢筋直径对最大锚固力影响较大,但不是贴焊钢筋直径越大越好,在贴焊钢筋长度相同的情况下,无论是单侧贴焊还是对称贴焊,都会使钢筋—砂浆间平均黏结强度降低。In this experiment, nine groups of specimens were drawn to study the influence of mechanical anchoring on anchor anchoring force and the following conclusions were drawn, bending anchor can increase the anchoring force, but the effect is not obvious, in the case of the same di-ameter and length of the welding bar, the symmetrical paste is larger than the maximum anchoring force of the single side welding, the diameter of the welded bar has a great influence on the maximum anchoring force, but the diameter of the bar is not the better, in the case of the same length of the welding bar, whether it is unilateral solder paste or symmetrical welding, will make the average bond strength between the steel and mortar, and the larger the diameter of the welding bar.

关 键 词：机械锚固 锚固力 拉拔试验 贴焊钢筋 平均黏结强度 

分 类 号：TD353.6[矿业工程—矿井建设]