显示设备固定结构在高铁既有站的应用研究

Research on Application of Display Equipment Fixed Structure in Existing High-speed Railway Station

研究一种高铁既有车站站台层的LED显示设备安装固定结构的应用。这种抱柱式站台显示屏固定结构通过将LED显示屏固定于站台层两支撑立柱之间,解决了高铁线路中一些老式铁路既有车站运行班次多、运营状态不允许长时间站台施工和不能破坏站台钢筋混凝土结构的问题。基于三维建模和数值仿真对这种设备固定结构进行一系列静力学结构分析,包括在极端工况环境下的静态应力、应变和位移分析,结果安全有效,安装作业符合现场施工要求,实现了此类高铁既有站站台结构上LED显示设备的安装和使用。为了研究这种抱柱式站台显示屏固定结构的工作可靠性,应用数值分析软件对结构模型进行预应力模态分析,在风荷载作用下分析各阶频率下结构的变形程度以及对地震灾害的预防影响,从而验证了这种LED显示设备固定结构在铁路信息显示技术上,特别是在高铁既有车站上应用的有效性及其应用价值。

The application of a fixed structure for installation of LED display equipment on platform of existing high-speed railway station is studied.This kind of column-holding display screen structure fixes the LED display between the two supporting columns on railway platform.The limitation that the old existing high-speed railway station can not be constructed for a long time and the reinforced concrete structure on railway platform can not be destroyed due to the frequent running is solved.Based on 3D modeling and numerical simulation,a series of static structural analysis are carried out for the structure.It includes static nodal stress analysis,strain analysis and displacement analysis under extreme working conditions.The results show that the fixed structure is safe and effective,and the installation and application of LED display equipment on the existing high-speed railway platform are realized.In order to study the working reliability of this kind of column-holding display screen,the modal analysis of equipment structure with prestress is carried out by using numerical analysis software.Under the action of wind load,the deformation degree of the structure under different frequencies is analyzed.The prevention of earthquake disaster by this structure is also analyzed.The validity and application value of the fixed structure of LED display equipment in railway information display technology,especially in existing high-speed railway stations are verified.