BFRP加固混凝土界面粘结强度影响因素研究  

STUDY ON FACTORS AFFECTING BOND STRENGTH OF BFRP REINFORCED CONCRETE INTERFACE

作　　者：姜浩[1] 孙兆恒 JIANG Hao;SUN Zhaoheng(School of Civil Engineering,Jinlin Jianzhu University,Changchun 130118,China)

机构地区：[1]吉林建筑大学土木工程学院,长春130118

出　　处：《低温建筑技术》2020年第2期10-12,共3页Low Temperature Architecture Technology

摘　　要：为了探究BFRP加固混凝土界面粘结强度的影响因素,文中通过作者参与的BFRP加固混凝土的双剪试验,根据试验过程、试验结果以及分析,归纳出BFRP-混凝土界面粘结强度的主要影响因素有混凝土强度等级、粘结长度、胶层厚度以及粘结宽度。文中针对这四种影响因素进行综合分析得出以下结论,混凝土强度等级,界面粘结强度随混凝土强度等级提高而增大;粘结长度,有效粘结长度范围内,界面粘结强度随粘结长度增加而增大;胶层厚度,界面粘结强度随胶层厚度增加而增大。粘结宽度,界面粘结强度随粘结宽度的增加而减小。其中,混凝土强度等级和粘结长度是影响界面粘结强度的主要因素。This paper explores the factors that influence the bond strength of BFRP reinforced concrete interface based on the double shear tests.Factors include concrete strength grade,bond length,bondline thickness,and bond width.A comprehensive analysis of these four factors leads to the following conclusions.The interface bond strength increased with concrete strength grade;In the effective bond length range,interface bonding strength increased with the bond length;The bond strength of the interface increased with the thickness of the bond layer;The interface bonding strength decreased as the bonding width increased.Among them,concrete strength grade and bond length are the main factors that influencethe bond strength of the interface.

关 键 词：FRP 界面强度 粘结长度 胶层厚度 

分 类 号：TU528[建筑科学—建筑技术科学]