后植型FRP束锚固件与砌体材料锚固性能研究  

Anchorage performance of post-installed FRP anchors in clay bricks

作　　者：郑晓龙[1] 陶毅 史庆轩[1] 陈建飞[2] 

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]英国贝尔法斯特女王大学

出　　处：《土木工程学报》2018年第1期41-50,共10页China Civil Engineering Journal

基　　金：国家自然科学基金(51408478);中国博士后基金(2015M572529)

摘　　要：针对FRP束锚固件在砌体材料(实心黏土砖)中的应用进行了研究,相比植入FRP束的混凝土试件,实心黏土砖的体积较小,因此其锚固性能会有明显不同。首先通过拉拔试验对FRP束与实心黏土砖的锚固性能进行了深入研究,分析并总结了相关重要参数对其锚固性能及破坏模式的影响规律。试验结果表明,采用预浸折叠式FRP束能有效提高锚固强度、预钻孔尺寸对锚固强度的影响较为明显。通过对试验结果和现有混凝土锚固强度模型的分析,确定锚固强度和破坏的有效投影面积相关,提出了两个针对FRP束与砌体材料的锚固强度模型,两者均能较准确的预测FRP束与砌体材料的锚固强度。The existing research of anchorage performance is rare in the fields of FRP anchor embedded in masonry structure. This study focuses on the application and behavior of the FRP anchors embedded in clay brick. The difference of the brick unit is that it has smaller dimensions compared to common concrete specimens. This paper reports an experimental study on FRP anchors under pull-off loading in detail. The experimental results indicate that FRP anchors made from folded pre-immersed FRP sheet can efficiently improve the anchorage performance. The size of the anchor hole has significant influences on the performance of anchorage. Through the analysis of the existing anchorage strength model of concrete and the present test on brick, it has been found that the anchorage strength is dominated by the projected area of the failure body. Based on two concrete anchorage strength models, this paper eventually developed two strength models for FRP anchor embedded into clay brick.

关 键 词：FRP束锚固件 砌体材料 锚固性能 试验研究 锚固强度模型 

分 类 号：TU362[建筑科学—结构工程]