高强钢绞线网加固混凝土粘结性能试验研究  

Experimental analysis of bond performance of concrete strengthened with high strength steel wire mesh

作　　者：毛荣一[1] 罗征[1] 王银辉[1] 胡晓佳[1] 

机构地区：[1]浙江大学宁波理工学院土木与建筑学院,浙江宁波315000

出　　处：《土木建筑与环境工程》2017年第3期13-19,共7页Journal of Civil,Architectural & Environment Engineering

基　　金："十二五"国家科技支撑计划(2015BAL02B03);宁波市自然科学基金(1140357B1501)~~

摘　　要：通过高强钢绞线网聚合物砂浆加固层与混凝土结构的剥离破坏试验,对加固层与混凝土界面的剥离破坏特征进行了研究。探讨了单侧加固、植筋加固及U型加固等不同的加固方式对加固层抗剪承载力及抗剪强度的影响。试验结果表明,采用U型加固等增加粘结面积的方式能有效提高加固层粘结面抗剪承载力,但同时会削弱加固层的抗剪强度,而在界面上植入抗剪钢筋后,能同时提高聚合物砂浆加固层的抗剪承载力及抗剪强度。根据试验结果,提出了最小植筋率的建议值。Experimental research on debonding failure of concert structure with high strength steel wire mesh was conducted to investigate the failure characteristics of interface debonding between concrete and reinforcing layer. The effects of different polymer mortar reinforcing methods were discussed on Shear bearing capacity and shear strength of reinforcing layer, such as single side strengthening, plant bar strengthening and U-shaped strengthening. The results show that shear-bearing capacity can be effectively improved by means of increasing bonding area of reinforcing layer, such as U-shaped strengthening or extension length of reinforcement layer. Shear strength of reinforcing layer would be weaken at the same time. Shear strength and shear-bearing capacity of polymer mortar reinforcing layer would be substantially improved by means of planting shear reinforcement. According to the test results, the suggestion value of minimum ratio of planting bar was prevised for the reference of the application in actual application.

关 键 词：高强钢绞线网 聚合物砂浆 钢筋混凝土结构 加固 

分 类 号：TU375.1[建筑科学—结构工程]