材料科学与工程学报2017，Vol.35Issue(6)：952-956,5.DOI:10.14136/j.cnki.issn 1673-2812.2017.06.018
碳纤维束铆钉锚固下CFRP布加固梁的力学性能
Mechanical Properties of Beams Strengthened with CFRP Sheet Anchored by CFRP Dowels
摘要
Abstract
In order to avoid premature debonding of Carbon Fiber Reinforced Polymer(CFRP) sheet from concrete surface,CFRP sheet used for strengthening reinforced concrete (RC) beams should usually be anchored to take full advantage of its high tensile strength.However,anchoring CFRP sheet is always difficult for beam irregular side shape and insufficient construction site.Recently a new kind of anchoring system called CFRP dowels is applied to deal with this problem.To this issue,four groups of beams strengthened by CFRP sheet under different anchoring ways are performed by four-point bending tests to analyze beam mechanical property and failure model during the whole loading process.The research results show that the beam strength and rigidity after strengthened by CFRP sheet is significantly improved as anchored by CFRP dowels.And optimization design was also conducted for CFRP dowels anchoring.Based on the research optimized anchoring depth of 80mm and best anchoring distance of 200mm are determined.Results of the research are of great significance for the design and promotion of the CFRP dowels anchoring.关键词
碳纤维布(CFRP)/碳纤维束铆钉/钢筋混凝土/数值分析Key words
carbon fiber reinforced polymer (CFRP)/CFRP dowel/reinforced concrete (RC) beam/numerical analysis分类
建筑与水利引用本文复制引用
庄宁,陈聪,陈达,王松,赵海宇..碳纤维束铆钉锚固下CFRP布加固梁的力学性能[J].材料科学与工程学报,2017,35(6):952-956,5.基金项目
国家自然科学基金资助项目(51679080、51379013) （51679080、51379013）
江苏省水利科技资助项目(2017030) （2017030）
江苏高校“青蓝工程”资助项目 （）
