CFRP约束预压混凝土棱柱的轴压试验研究  

Test study on precompressed CFRP confined concrete prisms under uniaxial loading

作　　者：马卫华[1] 李素娟[1] 曹志强[1] 柳丽霞[1] 华玉[1] 

机构地区：[1]唐山学院土木工程系,河北唐山063000

出　　处：《世界地震工程》2010年第2期130-135,共6页World Earthquake Engineering

基　　金：河北省科技厅科学技术研究与发展指导计划项目(07215641)

摘　　要：通过42个混凝土棱柱体的轴压试验,研究了混凝土、CFRP约束混凝土和CFRP约束预压混凝土3种情况的棱柱体试件在轴压力作用下的应力-应变关系,与此同时还得出了混凝土方柱在预压后用CFRP加固再受荷时,试件的峰值应力随预加轴压比的增加的变化规律,并给出了考虑预加轴压比影响的峰值应力的计算公式,为在役混凝土结构构件的加固设计提供试验依据。Through the uniaxial compression experiments of 42 concrete prisms,the stress-strain relationships of concrete specimens,CFRP confined concrete specimens and precompressed CFRP confined concrete specimens are studied.But for this,the varying rule of peak stress is obtained with the increasing of the preloaded axial compression ratio,while CFRP confined precompressed concrete prisms are reloaded.The tested results provide a basis for reinforcing design of concrete structural members in-service.

关 键 词：CFRP 预压混凝土 强度 轴压比 应力 

分 类 号：TU528.572[建筑科学—建筑技术科学] P315.97[天文地球—地震学]