不同注浆材料填充下的GFRP组合锚杆抗拔特性试验研究  

Experimental Study on the Pull-out Characteristics of GFRP Composite Anchor Rods Filled with Different Grouting Materials

作　　者：叶东昌 卞德存 周治国 杨军 赵亚宇 YE Dong-chang;BIAN De-cun;ZHOU Zhi-guo;YANG Jun;ZHAO Ya-yu(Guangzhou Municipal Engineering Testing Co.,Ltd.,Guangzhou 510520;Guangzhou Construction Co.,Ltd.,Guangzhou 510030;Guangdong Provincial Engineering Research Center for Assembled Underground Structure Detection and Monitoring,Guangzhou 510520)

机构地区：[1]广州市市政工程试验检测有限公司,广州510520 [2]广州建筑股份有限公司,广州510030 [3]广东省装配式地下结构检测与监测工程技术研究中心,广州510520

出　　处：《广州建筑》2023年第4期49-52,共4页GUANGZHOU ARCHITECTURE

基　　金：广东省住房和城乡建设厅科学技术计划项目(2022-K26-503115);广州市建筑集团有限公司科技计划项目(2021-KJ010、2021-KJ054、2023-KJ015)。

摘　　要：本文针对不同注浆材料填充下的GFRP组合锚杆抗拔特性开展试验研究。通过现场拉拔测试试验,可以发现:在充分考虑“钢绞线+GFRP筋”组合形式弹塑性变形基础上,采用普通混凝土砂浆和超高性能混凝土进行灌注的GFRP组合锚杆,两者抗拔性能均满足设计要求,该两种注浆材料强度的大小不影响组合锚杆锚固性能的发挥。This article conducts experimental research on the pull-out characteristics of GFRP composite anchor rods filled with different grouting materials.Through on-site pull-out testing,it can be found that,on the basis of fully considering the elastic-plastic deformation of the combination form of "steel strand+GFRP reinforcement",the GFRP composite anchor rod poured with ordinary concrete mortar and ultra-high performance concrete meets the design requirements in terms of pull-out performance.The strength of these two grouting materials does not affect the performance of the composite anchor rod anchoring.

关 键 词：GFRP组合锚杆 抗拔特性 注浆 拉拔试验 

分 类 号：TU472[建筑科学—结构工程]