市政技术2024，Vol.42Issue(9)：10-18,9.DOI:10.19922/j.1009-7767.2024.09.010
GFRP约束ECC短柱偏压试验研究
Experimental Study on Eccentric of GFRP-confined ECC Short Columns
摘要
Abstract
That fiiber reinforced polymer(FRP)constrained engineering fiber reinforced cementitious composites(ECC)axial compression columns can significantly improve the bearing capacity and ductility.But the degree and mecha-nism of performance improvement of FRP constrained ECC columns under eccentric compression should be studied.Based on this,vertical loading tests were conducted on ECC short columns constrained by glass fiber reinforced polymer(GFRP)with experimental variables of eccentricity(0,10,30,50 mm)and FRP layers(0,2,4 layers).And the test results were analyzed.The research results indicate that the compression side FRP fractures and the concrete crushes during small eccentricity failure.While during large eccentricity failure,the tensile side FRP tears and transverse cracks of concrete occur almost simultaneously.Under axial compression,both the axial deformation and compressive strength significantly increase;Under the action of bias,the compressive bearing capacity de-creases with the increase of eccentricity,while the ultimate displacement shows no significant change pattern.In addition,both the bearing capacity and ductility increase with the increase of FRP layers.关键词
GFRP/ECC短柱/约束/偏压试验/偏心距/FRP层数Key words
glass fiber reinforced polymer(GFRP)/engineered fiber reinforced cementitious composites(ECC)short column/constraints/eccentric compression test/eccentricity/fiber reinforced polymer(FRP)layers分类
交通运输引用本文复制引用
史玉英,袁婉莹,韩强..GFRP约束ECC短柱偏压试验研究[J].市政技术,2024,42(9):10-18,9.基金项目
国家自然科学基金重点项目(52338010) （52338010）
