摘要
为研究不同设计参数对预应力CFRP板加固钢-混凝土组合梁受弯性能和CFRP板强度贡献率的影响,采用有限元软件Abaqus对万世成论文中的试验构件进行有限元分析,通过对比模拟值、试验值与理论值验证模型的正确性。基于该有限元模型,对CFRP板加固钢-混凝土组合梁进行参数分析,结果表明,增加CFRP板的长度、宽度和厚度以及提高CFRP板的预应力水平,可以明显提升组合梁的抗弯性能。同时,增加H型钢单对称比和腹板宽厚比也可以提高组合梁弹性阶段刚度和抗弯性能。此外,增加CFRP板的长度和腹板宽厚比,提高CFRP板的预应力水平,以及减小CFRP板的截面面积和H型钢单对称比,可以提高CFRP板的强度贡献率。
In order to study the effect of different design parameters on the bending performance of the steel-concrete composite beams strengthened with prestressed CFRP plate and the strength contribution rate of the CFRP plate,finite element analysis is performed based on the experimental work of Wan.The reliability of the model is verified by the comparisons between the simulation results,experimental results and theoretical results.Based on the finite element model,a parametric study on the flexural behaviour of steel-concrete composite beams strengthened with CFRP plates is conducted.The results show that increasing the length,width,thickness and the prestress level of the CFRP plate,significantly improves the bending performance of strengthened composite beams.Besides,increasing the mono-symmetric ratio of the H-beam and the width-thickness ratio of the web can also improve the bending performance of composite beams.Moreover,the strength contribution rate of the CFRP plate increases with the increase of the length and prestress level of the CFRP plate and the width-thickness ratio of the web,but decreases with the increase of the cross-sectional area of the CFRP plate and the mono-symmetric ratio of H-beam.
作者
宫唯康
刘晓阳
荆玉才
项俊宁
李相国
杨国涛
GONG Wei-kang;LIU Xiao-yang;JING Yu-cai;XIANG Jun-ning;LI Xiang-guo;YANG Guo-tao(College of Civil Engineering,Qingdao University of Technology,Qingdao 266525,China;Shandong Hi-Speed Road&Bridge Group Co.,Ltd.,Jinan 250014,China;Shandong Hi-Speed Engineering Construction Group Co.,Ltd.,Jinan 250014,China)
出处
《复合材料科学与工程》
CAS
北大核心
2022年第7期11-19,共9页
Composites Science and Engineering
基金
国家自然科学基金(51808308,51978351)
山东省工业和信息化厅项目:钢混组合梁部分斜拉桥建造关键技术应用研究(202150100860)。
关键词
钢-混凝土组合梁
加固
CFRP
预应力
受弯性能
有限元
复合材料
steel-concrete composite beam
strengthening
CFRP
prestressing
flexural performance
finite element analysis
composites