碳纤维增强混凝土的拉敏特性及梁构件的机敏监测  

Study on Pulling Sensitivity Character of CFRC and Smart Monitoring of Beam Specimens

作　　者：黄龙男[1] 张东兴[1] 吴思刚[2] 赵景海[1] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院 [2]哈尔滨工业大学交通学院

出　　处：《材料工程》2005年第2期26-29,33,共5页Journal of Materials Engineering

基　　金：黑龙江省科技厅资助 (GCOIA2 1 80 )

摘　　要：碳纤维具有良好的导电性,电阻率变化率与所处应力场具有稳定的对应关系,在混凝土结构中构造一定厚度的碳纤维增强混凝土机敏层,并通过实时监测电阻率变化率,可对结构的实时荷载和变形程度进行预报。本工作研究了碳纤维增强混凝土本征拉敏特性规律,并将其应用于钢筋混凝土梁构件中,实现了对构件实时荷载和变形的在线监测。The electrical resistivity variation of fiber with good electric conductivity has stable corresponding relationship with its stress field. Through the conformation of carbon fiber reinforced concrete (CFRC) smart layer with definite height in concrete structure and real-time monitoring of electrical resistivity variation, the structure real-time loading and the degree of damage could be forecasted. The intrinsic pulling sensitivity regularity of CFRC was studied, and the regularity was used in reinforced concrete beam specimens, which realized the online monitoring of real-time loading and deformation.

关 键 词：碳纤维增强混凝土 拉敏特性 实时监测 

分 类 号：TU528[建筑科学—建筑技术科学]