界面形式对纤维编织网增强混凝土与混凝土界面的影响  

THE EFFECT OF INTERFACIAL PATTERN ON TEXTILE REINFORCED CONCRETE(TRC) AND EXISTING CONCRETE INTERFACE

作　　者：李鹏昊[1,2] 尹世平[1,2] 王玄玄 李守国[2] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008 [2]中国矿业大学力学与建筑工程学院,江苏省土木工程环境灾变与结构可靠性重点实验室,江苏徐州221116

出　　处：《工业建筑》2015年第9期117-120,166,共5页Industrial Construction

基　　金：国家自然科学基金项目(51478458,51108451);江苏省自然科学基金(BK2011220);中央高校基本科研业务费专项资金资助(2014QNA79);中国博士后和江苏省博士后基金(2014T70599,2012M511337,1102082C)

摘　　要：采用双面剪切的试验方式研究不同界面形式对纤维编织网增强混凝土（TRC）与既有混凝土界面性能的影响。试验结果表明：对于单层纤维编织网、预制形式的TRC加固层,随着TRC加固层与既有混凝土黏结长度的增加,界面的最大剪切荷载有所提高,但是极限抗剪强度有下降的趋势,且其有效加固长度应在200~300 mm;当既有混凝土强度处于C20~C40时,既有混凝土的强度等级对TRC与既有混凝土界面性能的影响不大;与预制加固形式相比,现浇TRC加固形式对TRC与既有混凝土界面性能有很大改善。Based on double shear test, interfacial properties between Textile Reinforced Concrete （TRC） and existing concrete were studied under the effect of different reinforcement forms. Conclusions were drawn that for the prefabricated TRC sheet with single layer textile, the interface ultimate shear load was increased with the increase of bonding length, while the ultimate shear strength showed the opposite tendency; the effective bonding length was between 200 mm and 300 ram; existing concrete strength had little influence on the interfacial properties when the existing concrete strength was between C20 and C40. As comparing to prefabricated reinforcement form, cast-in-place reinforcement form could significantly improve the interfacial properties between TRC and existing concrete.

关 键 词：纤维编织网增强混凝土 界面性能 不同界面形式 抗剪强度 界面滑移 

分 类 号：TU377.9[建筑科学—结构工程]