铁道标准设计Issue(3)：38-42,43,6.DOI:10.13238/j.issn.1004-2954.2016.03.009
北京地下直径线橡胶浮置板道床力学分析
Mechanics Analysis of Rubber Slab Track on Beijing Underground Diameter Line
摘要
Abstract
The mechanical properties of continuous rubber slab track in the tunnel of Beijing underground diameter line are studied, and the rail displacement limit of rubber floating slab at the speed of 100 km/h national railway is put forward. The displacement of floating slab track is calculated and the structure reinforcement and anchorage are designed. According to the characteristics of force transmission of continuous rubber floating slab, the rubber floating slab calculation model is established. The following factors are taken into consideration: the bedding moment of the slab under train load; the longitudinal force of slab caused by the braking and starting load of trains; the slab longitudinal force caused by concrete shrinkage and temperature change. The rail displacement limit of rubber floating slab and vertical displacement of track structure are determined with calculation and analysis of force characteristics of continuous rubber floating slab. In addition, structure reinforcement and anchorage of floating slab track are designed. The results show that ( 1 ) the vertical deformation limit of national railways floating slab track rail at 100 km/h can be set to 4 mm; ( 2 ) the rubber floating slab track structure of this line can meet the requirements of the vertical displacement limit; ( 3 ) in view of the combined effect of vertical and longitudinal forces, the reinforcement of continuous rubber floating slab is big quantity and the ratio of reinforcement is about 1. 28%;(4) to limit the longitudinal displacement of floating slab track, anchor connection is required with about 19m anchorage length.关键词
北京地下直径线/橡胶浮置板道床/力学分析/位移限值/锚固设计Key words
Beijing underground diameter line/Rubber floating slab track/Mechanical analysis/Displacement limit/Anchoring design分类
交通工程引用本文复制引用
王伟华..北京地下直径线橡胶浮置板道床力学分析[J].铁道标准设计,2016,(3):38-42,43,6.基金项目
铁道部科技研究开发计划项目(2010G028) （2010G028）
