摘要
通过轴压试验研究了不同混凝土强度等级下碳纤维布(Carbon Fiber Reinforced Polymer,CFRP)约束型钢混凝土短柱的荷载变形曲线,发现试件加固后效果呈现强弱约束两种状态。之后基于收集到的国内外相关试验数据,提出了判断CFRP加固混凝土圆柱强弱约束模式的侧向约束强度比界限值,并且通过回归方法得到界限值和混凝土强度的关系公式。最后考虑矩形柱的影响参数进一步得到修正关系公式,并经试验数据验证表明其吻合良好。
The load-axial deformation curves about carbon fiber reinforced polymer(CFRP)confined steel reinforced concrete short column with different concrete strength were researched by experiments,it was found that the strengthened specimens showed powerful and weak confinement status.Based on the collected test data,the boundary value of confinement ratio was suggested for determining the status.The relationship between the boundary value and the concrete strength was obtained by regression method.The modified relationship formula which considering the parameters of rectangular column demonstrated good agreements with many experimental results.
作者
高鹏
王敬棠
童林
洪丽
GAO Peng;WANG Jingtang;TONG Lin;HONG Li(School of Civil Engineering,Hefei University of Technology,Hefei230009,China;Key Laboratory of Performance Evolution and Control for Engineering Structures of Ministryof Education,Tongji University,Shanghai200092,China)
出处
《工业建筑》
CSCD
北大核心
2019年第9期118-123,共6页
Industrial Construction
基金
国家自然科学基金项目(51208166)
工程结构性能演化与控制教育部重点实验室开放基金资助项目(2018KF-1)
关键词
碳纤维复合增强材料
约束
混凝土强度
界限值
carbon fiber reinforced polymer
confinement
concrete strength
boundary value
