结构工程师2018，Vol.34Issue(1)：116-123,8.
预张紧钢绞线网-砂浆面层加固有负弯矩梁抗剪性能试验
Experimental Study on Shear Behavior of RC Cantilever Beams Strengthened with Steel Wire Rope Mesh and Polymer Mortar Layer
摘要
Abstract
The shear behavior of reinforced concrete cantilever beams strengthened with pretensioning steel wire rope mesh and polymer mortar layer using new pretension and anchor system is investigated.Four RC beams strengthened with pretensioning steel wire rope mesh were tested and compared with two reinforced concrete beam.The main parameters include the reinforcement mode,the spacing of the rope,and the type of the beam.The experimental results show that the shear capacity of strengthening beams can increase.With decreasing steel wire spacing,the shear load-carrying capacity will increase;the effect strengthened by ring strengthening is better than U-type.In the same conditions,stress of steel wire rope in the cantilever beam is slightly smaller than that in the simply supported beam.A simple and practical model to predict the shear capacity of strengthening beams is proposed.The predicted results using this model are in good agreement with the experiment results.The proposed model can be used for theoretical analysis and design of concrete beams strengthened with pretensioning steel wire rope mesh and polymer mortar layer.关键词
预张紧/钢绞线网/伸臂梁/受剪性能Key words
civil engineering structure/pretensioning/steel wire rope mesh/cantilever beams/shear capacity引用本文复制引用
曹忠民,高淳..预张紧钢绞线网-砂浆面层加固有负弯矩梁抗剪性能试验[J].结构工程师,2018,34(1):116-123,8.基金项目
国家自然科学基金(51368019) （51368019）
江西省科技厅科技项目(20122BBG70186) （20122BBG70186）
江西省教育厅科技项目(GJJ13327) （GJJ13327）
