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为适应提速干线而设计的提速道岔，除应满足强度的要求外，还应满足高速行车安全性和舒适性的要求。为此，于1996年6月～7月在京秦线大厂站的8号和9号岔位及沈山线柳河沟2号岔位，对提速客、货列车通过提速道岔主要部件的动力强度和动态振动特性进行了试验，为改善道岔结构设计
In order to meet the speed-increasing trunk line, the speed-increasing turnout should meet the requirements of high-speed driving safety and comfort in addition to the strength requirements. To this end, in June 1996 to July in Beijing and Qinhuangdao Dachang station No. 8 and 9 fork position and Shen Shan Line Liuhe ditch 2 fork position, speeding off passengers and freight trains through the main parts of the speed-up turnout strength And dynamic vibration characteristics were tested in order to improve the switch structure design