波纹钢管加固某钢筋混凝土圆管涵有限元分析  

Finite element analysis of reinforced concrete circular pipe culvert reinforced by corrugated steel pipe

作　　者：唐杨 王大为 林锦霞 TANG Yang;WANG Da-wei;LIN Jin-xia(Countryside Highway Administration Bureau of Wufeng Tujia Autonomous County,Yichang 443413,China;Wenzhou Traffic Planning and Design Institute,Wenzhou 325000,China;Power China Huadong Engineering Co.,Ltd.,Hangzhou 311122,China)

机构地区：[1]五峰土家族自治县农村公路管理所,湖北宜昌443413 [2]温州市交通规划设计研究院,浙江温州325000 [3]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122

出　　处：《河南城建学院学报》2020年第6期48-53,共6页Journal of Henan University of Urban Construction

摘　　要：以某钢筋混凝土圆管涵为例,采用Midas FEA建立波纹钢管加固钢筋混凝土圆管涵的非线性有限元模型,对比分析加固前后的加固效果。分析结果表明:采用波纹钢管加固后,钢筋混凝土圆管涵的变形、应力、裂缝宽度均有显著下降,土与钢筋混凝土圆管涵的接触力有所上升,表明加固后钢筋混凝土圆管涵的刚度有一定程度的提高;采用波纹钢管加固后,波纹钢管的应力值低于钢材的屈服强度,注浆部分混凝土达到抗拉强度标准值,并出现少量裂缝,裂缝宽度较小,建议注浆部分采用较高强度等级的混凝土;波纹钢管加固时的卸载程度越大,钢筋混凝土圆管涵的加固效果越好。With a reinforced concrete circular pipe culvert as an example,a non-linear finite element model of a reinforced concrete circular pipe culvert reinforced with corrugated steel pipes was established using Midas FEA,and the reinforcement effect before and after reinforcement was compared and analyzed.Through calculation and comparison,the results show that the deformation,stress and crack width of the reinforced concrete circular pipe culvert are significantly reduced after the reinforcement with corrugated steel pipes,and the contact force between soil and reinforced concrete round pipe culverts is increased,indicating that the stiffness of reinforced concrete circular pipe culvert has been improved to a certain extent.The larger the degree of unloading when corrugated steel pipe is reinforced,the better the reinforcement effect of the reinforced concrete circular pipe culvert.

关 键 词：钢筋混凝土圆管涵 波纹钢管 非线性分析 有限元分析 

分 类 号：U441[建筑科学—桥梁与隧道工程]