既有线有砟道床注浆加固技术研究进展

TRACK BEDS ON EXISTING RAILWAYS RESEARCH PROGRESS OF GROUTING REINFORCEMENT TECHNOLOGY FOR BALLASTED

随着列车速度和轴重的不断提高,既有线路道床劣化现象严重,其成为影响铁路运输安全的重要因素。针对道床劣化机理及危害,对比不同加固方法,着重围绕有砟道床注浆加固技术,深入了解国内外道床注浆技术的研究进展,详细介绍了日本、韩国和伊朗等国家在注浆道床性能测试方面的主要工作。并从有砟道床的成分和组成、注浆作用机理、注浆力学特性等方面,探究了有砟道床加固技术的发展方向。

With the continuous increase of train speed and axle load,the deterioration of existing track beds has become a serious factor affecting railway transportation safety.In response to the degradation mechanism and hazards of track beds,different reinforcement methods were compared,with a focus on grouting reinforcement technology for ballasted track beds.The research progress of grouting technology for track beds at home and abroad was deeply understood,and the main works of performance testing for grouted track beds in countries such as Japan,South Korea,and Iran were introduced in detail.And the development direction of reinforcement technology for ballasted track beds was explored from the aspects of composition and composition,grouting mechanism,and grouting mechanical properties.