碳纤维网格加固中小跨径桥梁受力性能分析及试验  

Construction Mechanical Characteristics and Monitoring Analysis of the Existing Subway over the Newly-Built Long Foundation Pit

作　　者：金春福[1] Jin Chunfu

机构地区：[1]辽宁省交通高等专科学校,辽宁沈阳110122

出　　处：《辽宁省交通高等专科学校学报》2022年第2期5-8,共4页Journal of Liaoning Provincial College of Communications

基　　金：辽宁省交通厅科学计划项目(202012);辽宁省交通高等专科学校应用型科研项目(lnccjyky202116);辽宁省教育厅服务地方计划项目(L2019638)。

摘　　要：为分析经碳纤维网格加固的桥梁受力特性,本文采用有限元分析及实桥荷载试验方法对碳纤维网格加固前后桥梁受力性能进行讨论。结果表明,碳纤维网格可有效分担部分应力,减小梁底应力,经碳纤维网格加固后桥梁同等荷载作用下挠度亦有减小,结构刚度有所改善,可提高旧桥的承载能力。In order to analyze the mechanical behavior of the bridge strengthened with CFRP grid,finite element analysis and load test were used to discuss the mechanical properties of bridges before and after carbon fiber grid reinforcement.The results show that the carbon fiber grid can effectively share part of the stress and reduce the stress at the bottom of the beam,and the deflection of the bridge is also reduced under the same load and the structural stiffness is improved,the bearing capacity of the old bridge can be im-proved.

关 键 词：碳纤维网格 加固桥梁 力学性能 有限元分析 试验研究 

分 类 号：U445.72[建筑科学—桥梁与隧道工程] U441[交通运输工程—道路与铁道工程]