玻璃纤维增强塑料(GFRP)筋混凝土梁斜截面受力性能  

Shearing capacity study on inclined section of GFRP concrete beams

作　　者：陈达[1] 江朝华[1] 张玮[1] 廖迎娣[1] 

机构地区：[1]河海大学交通学院,江苏南京210098

出　　处：《河海大学学报（自然科学版）》2007年第5期534-537,共4页Journal of Hohai University(Natural Sciences)

基　　金：江苏省基础研究计划(自然科学基金)资助项目(BK2007583);河海大学科技创新基金资助项目(2013/406094);河海大学引进人才科研启动基金资助项目(2084/40601152)

摘　　要：为了解决在恶劣环境下海港等工程钢筋锈蚀所引起的混凝土结构耐久性问题,研究了将玻璃纤维增强塑料(GFRP)筋替代钢筋应用在混凝土结构中的技术,并以钢筋为对比,进行了16 mm的玻璃纤维增强塑料筋混凝土简支梁的三点抗弯、抗剪力学性能研究.结果表明:在裂缝开展之前,玻璃纤维增强塑料筋混凝土梁的变形略大于钢筋混凝土梁;裂缝开展后,玻璃纤维增强塑料筋混凝土梁的变形增长较快,呈现脆性破坏的特征.玻璃纤维增强塑料筋混凝土梁的开裂荷载只有钢筋混凝土梁的72%左右,剪压破坏荷载为钢筋混凝土梁的77%左右.In order to improve the durability of concrete structure due to steel bar erosion in harbor engineering in poor environment, the glass fiber reinforced plastics （GFRP） is an ideal substitute for steel bar. Three-point bending tests for GFRP concrete beam and reinforced concrete beam were performed to compare the bending and shearing mechanical performances of the two kinds of beams. The result shows that the deformation of GFRP concrete beams is a little larger than that of reinforced concrete beam before cracking, then the GFRP concrete beam bends fast until brittle failure. Moreover, the crack strength and shearing failure streng{h of GFRP concrete beams are about 72% and 77% of those of reinforced concrete beams respectively.

关 键 词：玻璃纤维增强塑料筋 抗剪性能 简支梁 

分 类 号：U654[交通运输工程—港口、海岸及近海工程]