氯盐侵蚀对含节理锚固体力学劣化规律  

Mechanical degradation law of anchor solid with joints by chloride salt erosion

作　　者：李军 董致宏 王海军 张长锁 LI Jun;DONG Zhihong;WANG Haijun;ZHANG Changsuo(BGRIMM Technology Group,Beijing 100160,China;Civil and Resource Engineering School,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]北京科技大学土木与资源工程学院,北京100083

出　　处：《矿冶》2025年第1期26-33,共8页Mining And Metallurgy

摘　　要：为探究锈蚀后锚固体试样黏结性能劣化规律,以“混凝土—黏结材料—锚杆”锚固体结构为研究对象,考虑节理数量、节理位置和黏结材料因素对锚固体力学性能的影响,采用通电方式实现锚固体的加速锈蚀,通过拉拔试验获取锚固体荷载—滑移曲线。研究表明:试样的节理数量越多,位置越靠上,通电锈蚀后力学性能劣化越明显,拉拔试验的荷载—滑移曲线斜率越小,发生相对滑移破坏的概率越大,节理位置对锚固体力学性能的劣化作用小于节理数量。相较于透水性更差的树脂锚固体,通电锈蚀对砂浆锚固体的力学性能劣化作用更明显。In order to explore the deterioration law of bonding performance of anchor solid specimens after corrosion,the anchor structure of“concrete-bonding material-anchor”was taken as the research object.Considering the influence of joint number,joint position and bonding material on the mechanical properties of anchor solids,the accelerated corrosion of anchor solids was realized by electrification,and the load-slip curves of anchor solids were obtained through the pull-out test.The results show that:the more the number of joints in the specimen,the more the position is up,the more obvious the deterioration of mechanical properties after energized corrosion,the smaller the slope of the load-slip curve of the pullout test is,the greater the probability of occurrence of relative slip damage,and the deterioration of the mechanical properties of the anchors by the position of the joints is smaller than the number of joints.The effect of electrical corrosion on the deterioration of the mechanical properties of mortar anchor solids is more pronounced than that of resin anchor solids,which are less permeable.

关 键 词：锚固体 通电锈蚀 拉拔试验 黏结应力 氯盐侵蚀 

分 类 号：TU377[建筑科学—结构工程]