混凝土结构中钢筋与玻璃纤维增强筋(GFRP)的基本特征及其应用  

Basic Characteristics and Application of Rebar and Glass Fiber Reinforced Polymer(GFRP)in Concrete Structure

作　　者：罗晶晶 周博杰 赵加兵 Luo Jing-jing;Zhou Bo-jie;Zhao Jia-bing

机构地区：[1]中国建筑一局(集团)有限公司西北分公司,西安710065

出　　处：《建筑技术开发》2019年第1期20-21,共2页Building Technology Development

摘　　要：玻璃纤维增强筋(GFRP),具有较强的抗腐蚀性、耐久性,常应用于地铁站台的混凝土结构中,抗拉性能明显高于钢筋,替代钢筋作为抗拉材料非常合适,但是其延伸率远小于钢筋,同时,抗剪能力比较差,不适合替代钢筋作为主要的抗剪材料。在拉伸状态时,钢筋首先出现轻微紧缩,达到破坏强度时,力不再增加而是迅速下降,钢筋出现明显紧缩,随后突然断裂,而GFRP筋是从中间纤维先开裂,然后断裂的纤维越来越多,直至完全断开。Glass Fiber Reinforced Polymer with strong corrosion resistance and durability,it is often used in the concrete structure of subway platform.GFRP tensile performance is significantly higher than rebar,which reinforced as tensile material is very suitable alternative,but the elongation is far less than rebar,at the same time,the shear capacity is poor,not suitable for alternative rebar as the main material of shear.In the tensile condition,the rebar first appears to be slightly constricted,and when it reaches the breaking strength,the force does not increase,but rapidly decreases,and the rebar becomes visibly constricted,then suddenly breaks.However,GFRP is the intermediate fibers that crack first,and then the fibers break more and more until they are completely disconnected.

关 键 词：玻璃纤维增强筋 钢筋 抗拉能力 抗剪能力 

分 类 号：TU528[建筑科学—建筑技术科学]