初弯矩作用下预应力碳纤维布加固RC梁数值分析  

THE NUMERICAL ANALYSIS OF CONCRETE BEAMS STRENGTHENED WITH PRESTRESSED CFRP SHEETS UNDER INITIAL MOMENT

作　　者：刘建明[1] 邢宇锋[1] 蔡叶宏[1] 

机构地区：[1]燕山大学建筑工程与力学学院,秦皇岛066004

出　　处：《工业建筑》2007年第z1期1236-1238,1247,共4页Industrial Construction

基　　金：河北省教育厅基金资助项目(Z2006449)

摘　　要：通过利用大型通用软件ANSYS,对钢筋混凝土(RC)试件梁的碳纤维布粘贴方案的抗弯性能进行了非线性有限元分析。对卸载或不卸载时预应力碳纤维布加固梁进行仿真分析,提出了利用单元生与死实现不卸载时加固的方法,以及使用升温法施加预应力。使用ANSYS分析的结果与实验分析结果吻合较好,从而此方法可在一定程度上有效代替试验分析方法。A finite element method is used to analyse the anti-bending function of the beams using ANSYS program when they are uninstalled or when they are not uninstalled.In finite element analysis,the methods have been put forward that bring prestress to bear on CFRP sheets(the method of the rise in temperature)and that strengthen when it is not uninstalled by birth and death of elements.It's shown that the result of finite element analysis by ANSYS has a close agreement with the experimental result.So,finite element analysis method is feasible and available in practical application.

关 键 词：ANSYS 有限元分析 预应力 不卸载 

分 类 号：TU375.1[建筑科学—结构工程]