CFRP条带约束混凝土轴压力学试验研究  

Experimental study on axial compressive peoperties of concrete confined with CFRP strips

作　　者：谢志红[1] 陈伟鹏 郭永昌[2] 谢建和[2] 

机构地区：[1]广州航海学院航务工程系,广东广州5107251 [2]广东工业大学土木与交通工程学院,广东广州510006

出　　处：《混凝土》2017年第12期6-8,13,共4页Concrete

基　　金：国家自然科学基金(11372076;11672076);广东省高校工程中心滚动项目(13ZK0430);广东省科技项目(2014A010105044);广州市科技计划项目(201510010042;201510010096)

摘　　要：通过对粘贴CFRP条带布约束混凝土圆柱(150 mm×300 mm)进行轴心抗压试验研究,研究了3种条带宽度分别为25、30、35 mm约束混凝土、全包裹约束混凝土和未约束混凝土共15个试件。得到约束混凝土强度、极限应变和破坏模态及应力-应变曲线。试验结果表明:与未约束混凝土相比,条带宽度25、30、35 mm和全包裹的约束混凝土抗压强度分别提高了29%、55%、63%、153%,其对应的环向极限应变值分别提高了为195%、334%、351%、415%,轴向极限应变值分别提高了388%、405%、531%、652%,CFRP条带约束混凝土强度和变形性能得到较大程度的提高。The axial compression tests of concrete cylindrical （Ф 150 300mm ） with confined CFRP strips are conducted.A total of 15 cylindrical specimens with three strip widths of 25mm. 30mm and 35mm confined concrete, fully wrapped confined concrete and unconfined concrete were tested.The ultimate strength, ultimate strain, failure mode and stress-strain curves of concrete are obtained.The results show that the compressive strength of confined concrete with 25mm, 30mm, 35mm and fully wrapped reinforced concrete is 29%, 55%, 63% and 153% higher than that of unconfined concrete.The corresponding axial ultimate strain values were increased by 388%,405%, 531% and 652%, The hoop ultimate strain values were increased by t 95%, 334%, 351% and 4 l 5%.The strength and deformation performance of the concrete with CFRP strips are greaterty improved.

关 键 词：CFRP布 条带包裹 约束混凝土 轴压性能 

分 类 号：TU528.01[建筑科学—建筑技术科学]