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THE ANALYSIS OF DYNAMIC RESPONSE OF PILE-BOARD STRUCTURE BASED ON THE TRACK REGULARITY

机译:基于轨迹规律的桩板结构动力响应分析

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The subgrade of high-speed railway has soft foundation inevitably.As the reinforcement of soft foundation, the residual settlement and reinforcement of embankment of which are effected by dynamic fatigue properties and dynamic deformation of piles-board structure.The reinforcement and dynamic deformation of subgrade are determined by type and speed of train, reinforcement etc.Considering the factors of axle-weight, speed, subgrade structure, the dynamic load was established based on the track regularity.The dynamic train load means to meet the accuracy uneven requirements of track related to specific speed.To acknonwdge the dynamic response of piles-board structure, the dynamic load was applied on numeric model.The dynamic attenuation and impact of subgrade structure are simulated.According to the simulation, the dynamic track load based on the uneven requirement of track has specific influence area.The settlement after acceptance of subgrade reinforced by pile-board structure was satisfied the requirement of Code for Design of High Speed Railway.
机译:高速铁路路基不可避免地具有软土地基,作为软土地基的加固,路堤的残余沉降和加固受动态疲劳特性和桩板结构的动态变形影响。考虑到轴重,速度,路基结构等因素,根据轨道规律确定动载荷。动载荷是指满足轨道相关精度的不均匀要求。为了确认桩板结构的动力响应,在数值模型上施加了动态载荷。对路基结构的动力衰减和冲击进行了模拟。桩板结构加固路基验收后沉降良好符合《高速铁路设计规范》的要求。

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