碳纤维加固钢筋混凝土受弯构件的应变滞后分析  

Analysis of the Delayed Strain of the Reinforced Concrete Flexural Member Strengthened with CFRP

作　　者：朱剑俊[1] 欧新新[1] 刘勇[1] 

机构地区：[1]浙江工业大学,杭州310014

出　　处：《特种结构》2003年第1期48-50,共3页Special Structures

摘　　要：目前在碳纤维加固钢筋混凝土受弯构件的计算中 ,往往由于忽略了二次受力而产生的碳纤维应变滞后值 ,从而过高估计了构件的实际承载力 ,为此本文基于弹塑性理论 ,根据初始荷载下钢筋混凝土受弯构件所处的弹塑性状态 ,考虑碳纤维片材加固后构件的二次受力特性 ,针对卸载和不卸载的两种加固情况 ,分析推导了钢筋混凝土加固构件受力过程中 ,碳纤维片材的应变滞后值。Based on the elastoplastic theory,this paper presents the number of the delayed strain produced with the consideration of the secondary load of the reinforced concrete flexural member strengthened with CFRP.According to the initial elastoplastic condition which the flexural member is in and the state of flexural member strengthened by unload or non unload,the calculation is put forward.

关 键 词：加固 钢筋混凝土 受变构件 应变滞后 二次受力 碳纤维片材 加固 

分 类 号：TU375[建筑科学—结构工程]