摘要
为了研究高强无收缩灌浆料加固钢筋混凝土偏心受压柱的效果,设计制作了8个偏心加固构件和2个对比构件。通过偏心受压试验,研究了不同加固形式和加固厚度对大、小偏心柱抗压承载力的影响。试验结果表明:原构件混凝土和高强灌浆料加固层间能很好地协同工作、共同受力;采用高强灌浆料作为新增材料加固偏心受压柱,偏心受压柱的极限承载能力得到了较大的提高,单侧加固试件的极限承载力提高了76%~283%,两侧加固试件的极限承载力提高了249%~329%;大偏心受压柱的刚度和极限承载力与受加固层厚度呈正相关,而小偏心受压柱的刚度和极限承载力受加固层厚度影响较小,主要与被加固混凝土强度相关。
In order to study the effect of high strength non-shrinkage grouting material on reinforced concrete eccentric compression columns,8 eccentric reinforcement members and 2 contrast members are designed and manufactured.Through the eccentric compression test,the influence of different reinforcement forms and thickness on the compressive bearing capacity of large and small eccentric columns is studied.The test results show that the concrete of the original member and the high strength grouting material can work together well,and the ultimate bearing capacity of the eccentric compression column is greatly improved by using the high strength grouting material as the new material,the ultimate bearing capacity of the eccentric compression column is increased by 76%~283%,and the ultimate bearing capacity of the reinforced specimen on both sides is increased by 249%~329%;The stiffness and ultimate bearing capacity of the large eccentric compression column are positively correlated with the thickness of the strengthened layer,while the stiffness and ultimate bearing capacity of the small eccentric compression column are mainly related to the strength of the reinforced concrete,less affected by the thickness of the strengthened layer.
作者
余文成
王子恒
刘均利
刘浪
YU Wencheng;WANG Ziheng;LIU Junli;LIU Lang(Guilin University of Technology,Guilin 541004,China)
出处
《洛阳理工学院学报（自然科学版）》
2021年第3期44-49,72,共7页
Journal of Luoyang Institute of Science and Technology：Natural Science Edition
基金
国家自然科学基金资助项目(51468013)
广西科学与技术开发计划项目(桂科攻14251012).
关键词
高强无收缩灌浆料
偏心受压
加固
增大截面法
high strength non-shrinkage grouting material
eccentric compression
reinforcement
increasing section method
