高速铁路路基振动压实理论与智能压实技术综述

Review on Vibration Compaction Theory and Intelligent Compaction Technology of High-Speed Railway Subgrade

高速铁路路基智能压实技术是智能高速铁路建设的重要组成部分。在文献分析的基础上,从路基填料振动压实机理、机土耦合模型出发阐述高速铁路路基振动压实理论现状,以及目前高速铁路路基压实质量连续检测、路基智能压实技术的研究进展,提出高速铁路路基振动压实理论与技术的发展方向:深化振动压实过程填料细观演化与振动压实特性的联系研究,在振动压路机-填料的动力耦合理论基础上建立动力响应指标量化分析模型,实现高速铁路路基压实质量连续检测,形成高速铁路路基智能填筑新技术。

The intelligent compaction technology of high-speed railway subgrade plays an important part in the construction of intelligent high-speed railway.Based on analyzing a large number of documents,the current status of vibration compaction theory of high-speed railway subgrade as well as the current research progress of the continuous detection for the compaction quality of high-speed railway subgrade and intelligent subgrade compaction technology are elaborated from the perspective of the vibrating compaction mechanisms of subgrade filling materials and mechanical-soil coupling model.The development direction for the vibration compaction theory and technology of high-speed railway subgrade is proposed,i.e.,to deepen the research of the relationship between the meso-evolution of filling materials and the vibrating compaction characteristics in the process of vibrating compaction.The quantitative analysis model of dynamic response index is established based on the dynamic coupling theory of vibratory roller and filling materials.Therefore,the continuous detection for the compaction quality can be realized and a new technology to the intelligent filling of high-speed railway subgrade is formed.