预应力CFRP布加固混凝土梁的界面剪应力分析  

Analysis of the Interfacial Shearing Stress of Reinforced Concrete Beam with Prestressed Carbon Fiber Reinforced Polymer Sheet

作　　者：胡春红[1] 李艳[1] 张川 

机构地区：[1]河南理工大学,河南焦作454000 [2]河南焦作市公路管理局,河南焦作454000

出　　处：《煤炭技术》2006年第11期88-91,共4页Coal Technology

基　　金：河南省自然科学基金资助项目(编号:0111041200)

摘　　要：采用预应力碳纤维增强塑料(CFRP)对混凝土结构进行补强加固的方法是工程界近年来的研究热点之一。本文首先通过解析方法,分别推导出,张拉端预应力释放后界面剪应力的计算公式和均布荷载作用下CFRP布加固梁界面剪应力的计算公式;然后,将二者叠加,得出计算预应力CFRP布加固混凝土梁界面剪应力的一般公式。Recently, one of the study hotspot in engineering field is the method of strengthening reinforeed concrete structure using prestressed carbon fiber reinforced polymers. In the thesis, first, using the method of analytics, a theoretical derivation is separately made for calculating the formulas of the interfacial shearing stress along CFRP sheet - concrete bond surface after release of the prestressed CFRP sheet ends in concrete beam strengthened by CFRP sheet prestressing technique and the reinforced beam under the function of distributing load, and then, superposing the two formulas and educing the general formula of the interfacial shearing stress in reinforced concrete beam with prestressed CFRP sheet.

关 键 词：预应力 CFRP 加固 界面 剪应力 

分 类 号：TU375[建筑科学—结构工程]