客运专线铁路大号码道岔应答器组设置方案探析

客运专线铁路在设置跨线联络线时,正线道岔选用1/42大号码道岔后,需结合工程实际研究大号码道岔应答器组的设置原则,同时分析在大号码道岔离去区段设置有小于道岔侧线允许过岔速度的固定限速时,动车组列车存在超速的风险。通过分析研究大号码道岔应答器组的设置及报文发送原则,计算进路行车许可长度,理论分析特殊场景下动车组接发车是否存在超速的应用举例,研究结果表明:对于具备大号码道岔的侧向进路,当侧向接车时进站信号机开放USU,且同时满足进路行车许可长度超过制动距离检查范围,侧向进路范围内无低于大号码道岔侧向允许速度的临时限速条件时,列控中心可发送大号码道岔数据包;同时在离去区段制动距离内有低于大号码道岔侧向允许速度的固定限速时,动车组列车运行无超速的可能。

Research and Analysis of Large Size Turnout Balise Group Setting for Dedicated Passenger Railway Line

In setting of the cross connecting line in dedicated passenger railway line,No.42 large size turnout is selected for the main line and the setting principle of Balise group for large size turnout is analyzed in the light of engineering practices. When the over speed limit of the fixed speed limit is set smaller than that required for the siding of the departure section,the EMU is subjected to over speed risks. Through the analysis and study of the setting of the large size turnout Balise group and the principle of the message transmission,this paper calculates the length of routing,and theoretically analyzes whether there are occurrences of over speed of the EMU in special scenes. The results show that when the side-access signal with large size turnout is open to the USU and the side-way connection is made,and at the same time,the permissible length of routing exceeds the braking distance range,and there is no temporary speed limit less than that of the lateral allowable speed for large size turnout,the train control center can send large size turnout data packages; meanwhile,in the departure section,when there is a fixed speed limit in the range of braking distance,which is less than the lateral allowable speed for large size turnout,EMU train will be in operation without over speed.