研究目的:提出客运专线到发线有效长理论分析及计算、缩短到发线有效长的措施及带来的影响等，对 减小到发线有效长度，进而节省站场建设工程投资具有深刻的现实意义。
研究方法:本文首先确立了到发线有效长计算原则及应综合考虑的因素，其次对到发线有效长构成理论 和列车安全防护距离构成进行详细分析，并选取合适的训一算参数训一算出到发线有效长，最后对缩短到发线有 效长的措施及带来的影响进行分析
。 研究结论:客运专线到发线有效长与车辆性能、列控模式、车载设备性能和站坪坡度有较大关系经过理 论训一算，到发线有效长可在口前国内颁布规定的长度上进一步缩短
Research purposes: This paper establishes the analysis and calculation theory of the effective length of receiving- departure track on Passenger Dedicate Line and presents them ensures of shortening its effective length and its impacts thereof etc: This has profound realistic signification in the saving investment on station and yard construction project
Research methods: First, this paper establishes the calculation principle of the effective length of receiving- departure track integrated considerations; Second, this paper analyzes in detail the established theory of its effective length and distance for train safe protection ;At last analysis has been perform on adopting the proper parameter to calculate It ?s effective length, the m ensures for shortening its effective length and its effect thereof
Research conclusions : The effective length of receiving- departure track is related to rolling stocks performance, train controlmode train-bom equipment ?s performance, and the grade of station site. It is calculated theoretical that its Effective length may be much shorter than the length issued in the domestic regulation.
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