摘要
景观斜拉桥结构体系复杂,为了探究该独塔斜拉桥在施工阶段以及成桥阶段的力学行为,采用有限元分析软件进行数值建模分析,针对结构的动静力学分析,静力分析方面,从结构的位移、内力以及应力等方面对桥塔和主梁在各个施工阶段以及成桥阶段进行受力分析,特别选取结构的8个代表性点位进行局部力学行为观察,动力分析方面分别从结构的稳定性以及自振频率进行分析。结果表明:结构的受力均符合相关规范要求。通过对该斜拉桥其相关力学行为分析,可以为未来类似结构的设计、施工等提供参考。
The structural system of the landscape cable-stayed bridge is more and more complicated.In order to explore the mechanical behavior of the single-tower cable-stayed bridge in the construction stage and the bridge stage,the finite element analysis software was used for numerical modeling analysis.The research mainly focused on the dynamic and static analysis of the structure.In the aspect of static analysis,the force analysis of the pylon and the main beam at various construction stages and bridge stages was carried out from the aspects of structural displacement,internal force and stress.And 8 structures were selected.The representative points were observed for local mechanical behavior,and the dynamic analysis was analyzed from the structural stability and the natural vibration frequency.The results of mechanical analysis show that the force of the structure meets the requirements of relevant specifications.Through the analysis of the relevant mechanical behavior of the cable-stayed bridge,it can provide valuable reference for the design and construction of similar structures in the future.
作者
周勇军
田瑞欣
吴领领
ZHOU Yong-jun;TIAN Rui-xin;WU Ling-ling(Highway College, Chang’an University, Xi’an 710064,China)
出处
《科学技术与工程》
北大核心
2020年第12期4909-4915,共7页
Science Technology and Engineering
基金
国家自然科学基金(51678061)
重点科研平台开放基金项目(310821171121)。
关键词
桥梁工程
异形斜拉桥
人行景观桥
力学分析
bridge engineering
shaped cable-stayed bridge
pedestrian landscape bridge
mechanical analysis
作者简介
第一作者:周勇军(1977—),男,汉族,湖北孝感人,博士,教授,研究方向:桥梁动力学,E-mail:zyj@chd.edu.cn。
