摘要
基于城市轨道交通工程建设需求,在非预应力轨道板结构设计基础上,采用有限元软件建立了不同基础条件下的无砟轨道结构耦合模型,结合极限状态法,研究开展了综合考虑列车荷载、温度梯度和基础变形作用下预制板的弯矩及配筋计算。结果表明:合理的非预应力板式无砟轨道结构设计,能够满足工程建设需求,路基段承载能力极限状态配筋设计受偶然组合作用控制,不同基础类型的轨道板纵横向配筋均受正常使用极限状态标准组合控制。
Based on the construction requirements of urban rail transit engineering,a coupled model of ballastless track structure under different foundation conditions was established using finite element software on the basis of non prestressed track slab structure design.Combined with the limit state method,the bending moment and reinforcement calculation of prefabricated slabs under comprehensive consideration of train load,temperature gradient,and foundation deformation were studied.The results show that a reasonable design of non prestressed slab ballastless track structure can meet the needs of engineering construction.The reinforcement design of the ultimate bearing capacity of the roadbed section is controlled by accidental combination effects,and the longitudinal and transverse reinforcement of track slabs of different foundation types are controlled by the standard combination of normal use ultimate state.
作者
付琪璋
安震
万廷聪
Fu Qi-zhang;An Zhen;Wan Ting-cong
出处
《建筑技术开发》
2024年第9期68-70,共3页
Building Technology Development
关键词
地铁
结构设计检算
板式无砟轨道
极限状态法
subway
structural design and checking
slab ballastless track
limit state method
