FRP束与砌体材料锚固性能试验研究

发布时间：2018-04-04 12:06

本文选题：FRP束　切入点：砌体　出处：《西安建筑科技大学学报(自然科学版)》2015年06期

【摘要】：FRP剥离破坏是FRP加固结构中较为常见的一种破坏模式,其脆性的破坏特征很大程度上限制了FRP这一高性能材料在加固领域的应用.之前的研究已经证明施加适当的锚固措施能有效的控制和延缓剥离破坏的发生,提高加固效果.FRP束锚固件是一种将FRP布滚卷或折叠后通过树脂胶植入预钻孔洞的锚固措施.但是目前针对其锚固性能的研究还不完善,尤其针对其与砌体材料之间锚固性能的研究还很匮乏.相比FRP束锚固混凝土试件,砌体材料(例如烧结粘土砖)由于尺寸较小会对共锚固性能产生很大影响.本文针对FRP束与砌体材料的锚固性能进行深入研究.首先针对FRP网格加固砌体结构优化了锚固件构造方式,进而采用拉拔试验方案,分析研究了FRP束锚固砌体材料的力学性能及其破坏机理,并通过试验研究分析了锚固件主要参数与锚固强度的相关关系,最后依据试验结论提出了相应设计建议.
[Abstract]:FRP debonding failure is FRP reinforcement structure in a common failure mode, failure characteristics of the brittleness is largely restricted to the FRP of the high performance materials used in the strengthening field. Previous studies have shown that applying appropriate anchorage measures can effectively control and delay the occurrence of peeling off damage, improve the reinforcement effect of.FRP beam anchor is a kind of FRP cloth roll through the resin pre implant anchorage measures of drilling holes in winding or folding. But the current research on the anchorage performance is not perfect, especially on the anchorage performance between the masonry materials is still scarce. Compared to FRP beam anchorage concrete, masonry materials (e.g. sintered clay brick) due to the small size will have a great influence on the anchorage performance. This paper is to conduct a thorough study on the anchorage performance of FRP beam and masonry materials. Firstly, FRP grid reinforced masonry structure Optimizes the anchor structure, then the pull-out test scheme, analysis of mechanical properties and failure mechanism of FRP beam anchorage of masonry materials, and correlation between the anchor parameters and anchoring strength are analyzed through experimental research, finally, based on the test results and put forward the corresponding design suggestions.

【作者单位】：西安建筑科技大学土木工程学院;英国贝尔法斯特女王大学;
【基金】：国家自然科学基金项目(51408478) 陕西省自然科学基础研究基金项目(2014JQ2-5024) 陕西省教育厅专项科研计划项目(14JK1437)
【分类号】：TU522.3

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