摘要
非对称变高度连续钢桁梁桥结构形式复杂,为了明确该类桥的受力特点,验证其结构形式及受力状态是否满足实际工程需求,以某工程实例,应用midasCivil有限元软件建立成桥状态下的全桥模型,并对其进行计算分析.结果表明,上、下弦杆产生的竖向位移主要受恒载与活载作用影响;上、下弦杆的应力大小主要受恒载与活载影响较大,温度及横向风力影响较小,根据不同杆件处的应力大小,在截面设计上提出了相关建议;在各荷载工况下,该桥上、下弦杆的位移及主桁各结构的应力均满足规范要求,结构设计满足实际工程要求.
The structure form of asymmetric variable height continuous steel truss girder bridge is complex. In order to clarify the mechanical characteristics of this type of bridgeand verify whether its structural form and stress state meet the actual engineering requirements, a full- bridge model under the bridge state was established by using Midas Civil finite element softwareto carry out calculation and analysis with an engineering example.The results show that the vertical displacement of the upper and lower chords is mainly affected by dead load and live load. The stress of the upper and lower chord members is mainly affected by dead load and live load, while the temperature and lateral wind force are less affected. According to the stress of different members, relevant suggestions are put forward in section design. Under various load conditions, the displacement of the upper and lower chords of the bridge and the stress of main truss meet the specification requirements, and the structural design meets the actual engineering requirements.
作者
戴新安
郭子会
张谢东
董宇航
DAI Xinan;GUO Zihui;ZHANG Xiedong;DONG Yuhang(School of Transportation,Wuhan University of Technology,Wuhan 430063,China;Inner Mongolia Yitai Zhundong Railway Co. Ltd.,Ordos 010300,China)
出处
《武汉理工大学学报（交通科学与工程版）》
2019年第4期774-778,共5页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
关键词
非对称
变高度
连续钢桁梁桥
受力研究
结构验算
asymmetric
variable height
continuous steel truss bridge
force research
structural checking
