复合材料科学与工程Issue(2)：1-11,81,12.DOI:10.19936/j.cnki.2096-8000.20250228.001
CFRP筋增强珊瑚骨料混凝土偏压短柱力学行为及配筋率研究
Study on the mechanical behavior and reinforcement ratio of eccentrically loaded coral aggregate concrete short columns reinforced with CFRP bar
摘要
Abstract
To study the effects of longitudinal reinforcement ratio and eccentricity on the mechanical behavior of eccentrically loaded coral aggregate concrete short columns reinforced with carbon fiber composite(CFRP)bars,tests were carried out on 9 CFRP-coral concrete short columns and 3 plain coral concrete short columns.The effects of eccentricity(15 mm,30 mm,45 mm)and longitudinal reinforcement ratio(2.09%,3.01%,4.10%)on the cracking load,ultimate load,CFRP longitudinal reinforcement stress and coral concrete stress were analyzed and discussed,respectively.The results show that all specimens are failed by the crush of concrete on the compression side.The cracks of coral concrete are restricted effectively due to the increase of longitudinal reinforcement ratio,and the cracking load,ultimate load and ductility of the specimens are also increased accordingly.The utilization rate of the strength of CFRP longitudinal bars is relatively low,the maximum stress is only 95.78 MPa,which is a-bout 21.28%of that of the ultimate compressive strength of CFRP reinforcement.Based on the relevant theories of reinforcement ratio for flexural members,calculation methods of longitudinal reinforcement ratio for CFRP-coral concrete columns were put forward,and the values of minimum and maximum reinforcement ratio for the specimens were modified,accordingly,reasonable suggestions were proposed to practical engineering application.关键词
CFRP筋/珊瑚骨料混凝土/短柱/偏心距/配筋率/复合材料Key words
CFRP bar/coral aggregate concrete/short column/eccentric/reinforcement ratio/composites引用本文复制引用
关纪文,王玉梅,韦丽兰,孔德辅,陈华,熊超华..CFRP筋增强珊瑚骨料混凝土偏压短柱力学行为及配筋率研究[J].复合材料科学与工程,2025,(2):1-11,81,12.基金项目
国家自然科学基金重点国际(地区)合作研究项目(52220105005) （地区）
广西自然科学基金(2023GXNSFBA026135) （2023GXNSFBA026135）
广西科技基地和人才专项(AD23026136) （AD23026136）
南宁市"邕江计划"青年人才专项(RC20230103) （RC20230103）
广西高校中青年教师科研基础能力提升项目(2023KY1857) （2023KY1857）
