在介绍我国高速列车发展和创新研究平台建立的基础上，开展了引进高速动车组从轮对踏面及内侧距、线路不平顺到动车组参数的适应性研究；以提升动车组运行速度为目标，优化了京津城际铁路高速动车组的参数，并开展科学研究性试验，获得了最高运行速度394.3 km/h的高速列车运动行为及耦合系统的动力学响应特征；针对京沪高速铁路用新一代高速列车速度目标值，京津城际动车组的运用情况和无砟高架线路的不平顺谱特性，在保证更高临界速度的基础上，为了进一步提高动车组的垂向和横向动力学性能，完成了转向架结构和参数的进一步优化，实现了引进动车组的消化吸收再创新。

The present work gives an introduction to the framework of development of high speed trains and the study on its innovation techniques in China. In the framework, the further researches were carried out on the profile and back-distance of high speed wheelset, the irregularity spectrum of high speed track, and the suspension parameters of high speed EMU in order to find their best adaptabilities when the vehicles run at the existing line. The structure parameters of the high speed EMU, which now serves in Beijing—Tianjin intercity high speed line, were in detail optimized and their hunting critical speed increases significantly. Therefore, the vehicles meet their service operation at higher speeds. The maximum test speed of this kind of the high speed vehicle on Beijing—Tianjin high speed line reached 394.3 km/h, and the vehicle represent excellent dynamic behavior. Aimed at a new generation of high speed trains with higher service speed, which will serves on Beijing—Shanghai high speed railway line, the characteristics of the non-ballasted track, and the service operation requirement of the vehicles, the vertical dynamic characteristics of the vehicle used now in Beijing—Tianjin line were further improved and optimized without loss of its critical hunting speed. The lateral and vertical dynamics behaviors and motion stability increase distinctly. The procedure regarding the import, assimilation and absorption, and innovation of high speed train techniques has been successfully accomplished.