运营高铁无砟轨道临时支撑系统研究

为保障运营高铁无砟轨道维护施工过程列车运营安全，设计一种临时支撑系统。该临时支撑系统由WJ-7型扣件系统、钢垫板支承层、填充找平层和锚固系统组成，利用数值模拟受力分析和顶推试验，对支撑系统的结构稳定性进行计算分析和模拟。研究结果表明，在51 kN横向顶推作用下，支撑系统变形量小于2 mm。在无砟轨道变形整治工程中，应用该支撑系统代替既有轨枕承载。监测结果表明，该支撑系统能够有效保持施工过程中轨道几何尺寸稳定。

Research on Temporary Support System for Ballastless Track of Operating High Speed Railway

To ensure the safety of train operation during the construction process of repairing ballastless tracks on high-speed railways, a temporary support system is designed. The temporary support system consists of WJ-7 type fastener system, steel pad support layer, filling and leveling layer, and anchoring system. By using numerical simulation force analysis and top push test, the structural stability of the support system is calculated, analyzed, and simulated. The research results show that the deformation of the support system under 51 kN lateral top push is less than 2 mm. In the deformation control project of ballastless track, the support system is applied to replace the existing rail sleepers for bearing. The monitoring results show that the support system can effectively maintain the geometric stability of the track during the construction process.