某U形渡槽碳纤维布加固效果有限元分析  

Finite Element Analysis of U-Shaped Aqueduct Carbon Fiber Cloth Reinforcement Effect

作　　者：王国炜 林锦霞 景忠波 唐杨 WANG Guo-wei;LIN Jin-xia;JING Zhong-bo;TANG Yang

机构地区：[1]济南金衢公路勘察设计研究有限公司,山东济南250101 [2]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [3]日照三驰水利工程有限公司,山东日照276800 [4]五峰土家族自治县农村公路管理所,湖北宜昌443413

出　　处：《内蒙古公路与运输》2023年第4期20-23,共4页Highways & Transportation in Inner Mongolia

摘　　要：以某座简支U形渡槽为工程背景,采用Midas FEA建立三维有限元模型,考虑混凝土的材料非线性,对比分析了渡槽采用碳纤维布加固前后的受力性能,同时研究了碳纤维布的粘贴范围对渡槽加固效果的影响。研究结果表明:采用碳纤维布加固后渡槽的挠度最大值、裂缝宽度最大值均有一定程度的下降;顺桥向碳纤维布的粘贴范围对渡槽的挠度、裂缝宽度和裂缝分布存在一定的影响;仅在跨中截面附近粘贴碳纤维布,对渡槽的裂缝宽度和裂缝分布有较大影响,而对渡槽的挠度影响不大。With a simple U-shaped aqueduct as the engineering background,the three-dimensional finite element model was established by Midas FEA.Considering the material nonlinearity of concrete,the mechanical properties of the aqueduct before and after the reinforcement of carbon fiber cloth were compared and analyzed.At the same time,the influence of the bonding range of carbon fiber cloth on the reinforcement effect of the aqueduct was studied.The results show that the maximum deflection and maximum crack width of the aqueduct after carbon fiber cloth reinforcement decreased to a certain extent.The bonding range of the carbon fiber cloth along the bridge had certain effect on the deflection,crack width and crack distribution of the aqueduct.Just sticking carbon fiber cloth near the mid-span section had a great impact on the crack width and crack distribution of the aqueduct,but had little effect on the deflection of the aqueduct.

关 键 词：U形渡槽 碳纤维布加固 有限元分析 材料非线性 

分 类 号：TV332.4[水利工程—水工结构工程]