考虑残余应变的碳纤维片材抗弯加固计算分析  

Calculation and Analysis on Flexural Strengthening with CFRP Laminate Considering the Preexisting Strain

作　　者：孙昊[1] 钱永久[1] 陈远久[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《石家庄铁道学院学报（自然科学版）》2009年第2期27-31,共5页Journal of Shijiazhuang Railway Institute

基　　金：高等学校优秀青年教师教学科研奖励计划(A0110719950102)

摘　　要：结构残余应变的存在对碳纤维片材的利用效率有一定的影响。在对现有大量研究成果分析的基础上,根据平截面假定和力的平衡关系推导了考虑结构残余应变的碳纤维片材使用面积的计算公式,该公式易于设计人员理解和掌握。通过讨论残余应变与截面相对受压区高度的关系,明确了残余应变影响加固效果的实质。计算分析结果可作为碳纤维片材加固工程设计的参考依据。The preexisting strains of structures have some influence on the efficiency of CFRP Laminate. Based on the analysis of the abundant existing research productions, the calculation formulas of CFRP Laminate are proposed based on the supposition of plane section and balance of forces considering the preexisting strain. And the formulas are easy to understand and master for designers. By discussing the relation between the preexisting strain and relative depth of compression zone, the essentials of the impact on reinforcement effect of residual strain are confirmed. The results can offer reference bases for strengthening engineering design of CFRP Laminate.

关 键 词：加固 残余应变 碳纤维片材 影响分析 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]