铁路安全线与挡车器的匹配设计研究-《高速铁路技术》

文章信息/Info

Author(s):: JIANG Zhihua; China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China

摘要:: 在现行的铁路设计规范中，对安全线的平纵断面设计规定存在缺陷和严重安全隐患。多个规范中均有"有条件时，邻靠正线的安全线应采用曲线型布置"的要求，但曲线型实际上更增加了对正线的危险，也易造成挡车器的非正常受力损坏，不能再次使用。为更好的保障铁路运输安全，确保挡车器等缓冲设施作用的正常、安全、反复使用，文章结合安全线尾部的挡车器受力特点针对安全线的平纵断面设计进行研究论述，提出了安全线平面设计应设计为直线型，避免采取曲线型设计；纵断面应为一个整坡（尤其是靠近车挡的部分），避免设置变坡点的新要求。并提出对安全线的设计规范的修订建议。

Abstract:: In the current code for railway design, there are some defects and serious potential safety hazard in the design of the horizontal and vertical sections of the safety siding. There are requirements like "Conditionally, the safety siding adjacent to the main line should use curve" in multiple codes, however, the curve type safety siding actually increases more risks to the main line, it also causes the stop buffer to be damaged by abnormal stress, and it can't be used again. In order to better protect the safety of railway transportation, and ensure the normal, safe and repeated use of buffer facilities such as stop buffer, combined with the design of plane and vertical section of safety siding according to the stress characteristic of the stop buffer near the rear of the safety siding, this paper proposes some new requirements that safety line plane should be designed as a linear type, curve should be avoided; and the vertical section should be a whole slope (especially the part near the stop buffer), variable slope point should be avoided,and some design code revision suggestions about safety siding are also raised.