平原地区增建二线线路设计要点-《高速铁路技术》

文章信息/Info

Author(s):: CHEN Xin-zhi; Third Civil Construction Design & Research Institute, China Railway Eryuan Engineering Group Co., Ltd, Chengdu 610031, China

摘要:: 通过参与漯河至阜阳增建二线的设计,从中总结平原地区增建二线线路设计要点,包括侧位选择、线间距的确定、纵断面标高的确定、双绕线路的设计等。侧位选择上优先考虑由新增二线承担重车运输,特殊情况下换边,新增二线与既有线高差较大时,宜加大线间距避免加设线间结构物以利既有线安全,纵断面设计尽量与既有线等高,但要重视设计水位和桥涵结构的要求,双绕新建段纵断面设计宜适当抬高设计标高以利于道路交叉等。

Abstract:: From the design experience of Luohe-Fuyang railway, this paper summarizes the design points of the second railway line on plains, including the side selection of the new line, the determination of distance between centers of lines and the elevation of longitudinal section, the design of double track on round section and etc. The new line is located preferentially on loaded side, change side at particular case. Increase the distance between the centers of lines while the new line is much higher than existing line, benefiting the safety of the existing line; vertical section should be designed as the same level of existing line while the requirements of design water level and the structure should be also paid attention to; the design elevation should be raised appropriately for vertical section design on round section to facilitate road crossing.