摘要
为了研究钢波纹板混凝土拱加固体系的力学性能,依托工程实例,建立了钢波纹板混凝土拱加固体系的空间有限元模型.通过应力分析可知该体系在最不利情况下的最大竖向位移位置,分析加固体系拱顶混凝土厚度的参数,从而得到拱顶最小安全填筑厚度.结果表明,在钢波纹板混凝土拱加固体系中,钢波纹板受力较大,是结构的控制核心,混凝土处于三维受力状态,不宜采用过高标号;随着拱顶混凝土填筑厚度的增加,钢波纹板的应力应变逐渐减小;加固体系在挂车荷载作用下存在一定的应力集中.
In order to study the mechanical properties of steel corrugated plate-concrete arch reinforcement system,on the basis of an engineering example,a spatial finite element model for the steel corrugated plate-concrete arch reinforcement system was established.Through the stress analysis,the maximum vertical displacement position of the system under the most unfavorable conditions was obtained.In addition,through analyzing the parameters for the thickness of vault concrete in the reinforcement system,the minimum safe filling thickness of vault was obtained.The results show that in the corrugated steel plate-concrete arch reinforcement system,the steel corrugated plate is subjected to a greater force,and is the control core of structure.In addition,the concrete is subjected to a three-dimensional stress state,so it is not appropriate to use the concrete of excessively high marks.Moreover,with the increase of filling thickness of vault concrete,the stress and strain of steel corrugated plate gradually decrease.Furthermore,the reinforcement system has a certain degree of stress concentration under the influence of trailer load.
作者
宋福春
王厚宇
赵洁
张冠华
SONG Fu-chun;WANG Hou-yu;ZHAO Jie;ZHANG Guan-hua(School of Transportation Engineering, Shenyang Jianzhu University, Shenyang 110168, China;Highway Maintenance Technology Research and Development Center, Liaoning Provincial Communication Planning & Design Insitute Co.Ltd. , Shenyang 110111, China)
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2020年第3期343-349,共7页
Journal of Shenyang University of Technology
基金
辽宁省自然科学基金项目(201602602)
沈阳市科学技术计划项目(F16-095-1-00).
关键词
桥梁工程
钢波纹板
有限元分析
混凝土拱
旧桥加固
受力特性
加固体系
bridge engineering
steel corrugated plate
finite element analysis
concrete arch
old bridge reinforcement
mechanical characteristic
reinforcement system
