铁道标准设计2017，Vol.61Issue(7)：46-50,5.DOI:10.13238/j.issn.1004-2954.2017.07.011
高速铁路轨道板沉降与水平偏位机械复位技术
Mechanical Reset Technology for Settlement and Horizontal Shift Control of High-speed Railway Track Slab
李显 1于莉萍 2王海 2苟金成 1吴二军1
作者信息
- 1. 上海同罡建筑工程有限公司,上海 201101
- 2. 河海大学,南京 210098
- 折叠
摘要
Abstract
The track requirements for high-speed railway are very strict, but track slab settlement occurs from time to time with rapid development of high-speed railway. Based on the project in the section of Zhengzhou-Xuzhou high-speed railway, the cause of displacement and deviation is analyzed and a dual-dimension reset system dealing with settlement and horizontal shift of ballastless track slab is proposed and designed. This system is divided into two parts, the vertical lifting system and the horizontal reset one. The vertical lifting system includes pedestal, distribution girder, suspender and jack while the horizontal system is consisted of horizontal support and jack. The scheme of resetting control unit and synchronizing displacement control are introduced. The unit overlapping and the second loading are employed to solve the impact of the force at the intersecting position of the unit. The displacement synchronous control adopts PLC automatic displacement synchronous control system. Calculating method is proposed to determine the lifting force, the punching shear strength of bottom plate of anchoring part and the local bearing capacity of track slab in the support zone of beam. The scheme is successfully implemented in Zheng-Xu high-speed railway project, which provides a new technical idea for the resetting of railway track slab.关键词
高速铁路/轨道板/沉降/水平偏位/顶升/机械复位Key words
High-speed railway/Track slab/Sedimentation/Horizontal shift/Lifting/Mechanical reset分类
交通工程引用本文复制引用
李显,于莉萍,王海,苟金成,吴二军..高速铁路轨道板沉降与水平偏位机械复位技术[J].铁道标准设计,2017,61(7):46-50,5.
