摘要
研究目的:为了使我国高速铁路适应各种严寒环境的建设和运营,本文在介绍季节冻土分布及工程特性基础上,回顾了我国季节冻土区高速铁路的发展现状,总结归纳了季节冻土区高速铁路路基冻胀控制技术以及轨道结构工程、接触网和动车组融雪除冰等其他控制技术的研究成果,并对其未来发展进行了展望。研究结论:(1)应尽量避免季节性冻土对工程结构的影响,从高铁的平稳、安全、舒适、耐久性方面考虑,以桥代路是有效的措施;(2)对高铁全生命周期健康状态进行全面监控,结合高铁结构变形规律,开展相关研究,确保高铁安全、高速、健康运营;(3)大力研发非接触式无损监测技术,避免监测仪器对高铁主体结构的影响,使监测结果及时为设计优化与养护维修提供重要依据;(4)不断认识、探索、积累和完善季节性冻土区高速铁路建造技术,同时加强对冻害原因与对策措施的系统分析、冻害机制与维护技术研究,建立季节冻土区高铁养护维修技术标准,逐渐使我国高铁适应各种严寒环境的建设和运营;(5)本研究结果对我国季节性冻土地区高速铁路的设计和施工技术有一定的指导意义。
Research purposes： Based on brief introduction of distribution and engineering characteristics of the seasonal frozen soil, this paper reviewed the development present situation of high - speed railway in seasonal frozen soil region in our country, summarized the research results of seasonal frozen high - speed railway subgrade frost heave control technology and other control technologies such as track structure engineering, catenary and the emu snowmeh de - icing, and prospected the future development. Research conclusions： （ 1 ） It is effective to avoid the effects of seasonal frozen soil on the structure of the project and considering the smooth, safety, comfort and durability of high - speed railway, it is suggested that the railway should be replaced by the bridge. （2） We should carry out a comprehensive monitoring of the health status of the whole life cycle of the high - speed railway, and carry out related research in combination with the deformation rule of high - speed railway structure to ensure the safe, high - speed and healthy operation of high - speed railway. （3） We should vigorously develop non - contact nondestructive monitoring technology to avoid the influence of the monitoring instrument on the main structure of high - speed rail, so as to provide an important basis for the timely design optimization and maintenance of high -speed railway. （4） We should understand, explore, accumulate and perfect high -speed railway construction technology in seasonal frozen soil region, at the same time, strengthen the system analysis of cold injury causes and countermeasures, and strengthen the research of freezing injury mechanism and maintenance technology,build the technical standard of high -speed railway maintenance in seasonal frozen soil region, to ensure the safety of construction and operation of high - speed railway. （5） The research results have certain guiding significance for the design and construction technology of high speed railway in seasonal frozen soil area in Chi
出处
《铁道工程学报》
EI
北大核心
2017年第10期1-10,共10页
Journal of Railway Engineering Society
关键词
季节性冻土
高速铁路
施工技术
seasonal frozen soil region
high speed railway
construction technology
