城轨车辆低粘着条件下紧急制动减速率研究

Research on Emergency Brake Deceleration Rate of Metro Vehicles under Low-adhesion Condition

为保证列车区间行车安全,必须研究不利条件下的紧急制动减速率。阐述了相关标准对车辆在最不利条件下运行的要求,描述了制动力产生的原理及粘着对车辆运行的影响,介绍了国内外轮轨粘着系数研究的成果。通过理论计算、线路试验对低粘着工况下紧急制动减速率的变化进行研究,获得相关试验结果,供车辆运营方制订低粘着条件下车辆运行的安全措施参考。

For ensuring the operation safety, emergency brake deceleration rate of metro vehicles under low-adhesion condition was studied. Firstly, the requirements about operation under the worst condition, regulated by related standards, were presented. Secondly, the principle of braking and the influence of adhesion was described. Thirdly, the research results on the adhesion at home and abroad were introduced. At last, the variation of emergency brake deceleration rate under low-adhesion condition was studied through theoretical calculation and line test. The test results are helpful for the operators to develop the safety measures when the vehicles are operated under low-adhesion condition.