EXPERIMENTAL STUDY ON BOND BEHAVIOR OF NSM CFRP STRIPS-CONCRETE INTERFACE
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摘要: 嵌入式(NSM)加固法是FRP材料加固混凝土结构的一种新的应用形式。通过CFRP板条嵌入混凝土试块的界面单剪试验,研究粘结长度对界面粘结性能的影响。根据实测应变分布,得到沿粘结长度界面粘结应力分布,并通过计算分析,对局部粘结滑移关系进行了初步探讨。Abstract: Near -surface mounted(NSM) FRP reinforcement is emerging as a promising technique for the strengthening of concrete structures.It is presented an experimental study on the bond behavior of NSM CFRP strips using a simple shear test set -up.The effect of bond length on bond performance is examined.The failure mode,the FRP strain and bond stress distributions,and the local bond -slip relationship are all discussed.
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Key words:
- CFRP /
- near -surface mounted /
- concrete /
- bond
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[2] 姚谏,滕锦光.FRP复合材料与混凝土的粘结强度试验研究.建筑结构学报,2003,24(5); 李荣,滕锦光,岳清瑞.FRP材料加固混凝土结构应用的新领域--嵌入式(NSM)加固法.工业建筑,2004,34(4); [3] De Lorenzis L,Nanni A.Bond between NSM Fiber-Reinforced Polymer Rods and Concrete in Structural Strengthening.ACI Structural Journal,2002,99(2):123~132; [4] Blaschko M.Bond Behaviour of CFRP Strips Glued into Slits. In:Proceedings of the Sixth International Symposium on FRP Reinforcement for Concrete Structures.Singapore:2003.205~214
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