摘要
对混凝土结构用CFRP筋及其加筋混凝土梁的力学性能和感知性能进行试验研究。自行研制开发了不同直径和表面处理形式的CFRP筋。在此基础上,制作了三组各6个标准受拉试件,分别测试了CFRP筋的弹性模量、极限抗拉强度和电阻变化率,得到了相应的变化曲线;其次制作了两组各3根CFRP加筋混凝土梁,测试了梁中CFRP筋电阻随载荷增加的变化曲线。研究表明,CFRP筋具有很好的力学性能和感知性能,对于混凝土结构加强筋和结构受力状态监测具有广泛的应用前景。
This paper presents test results on the mechanical and self-sensing properties of CFRP bars and concrete beams reinforced with CFRP bars. The CFRP bars with different diameters were produced with different surface treatments. Eighteen CFRP bar specimens in three series were tested for elastic modulus, ultimate tensile strength and electrical resistance change. Six concrete beams reinforced with CFRP bars under third-point loading were tested. The curves of electrical resistance change of CFRP bars in concrete beams versus load were presented. The test results show that CFRP bars can be used as reinforcement and monitor the concrete structures mechanical properties.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2003年第6期47-51,共5页
Acta Materiae Compositae Sinica
基金
国家自然科学基金资助项目(50208007)
关键词
CFRP筋
力学性能
感知性能
混凝土梁
Beams and girders
Concrete reinforcements
Concretes
Elastic moduli
Electric resistance
Mechanical properties
Reinforced concrete
Surface treatment
Tensile strength
