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| Design and Construction Technology of High Speed Railway in Seasonal Frozen Soil Region |
| LIU Hui |
| (China Railway Group Limited, Beijing 100039, China) |
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Abstract Abstract：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 snowmelt 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 China.
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Received: 08 August 2017
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2017, Vol. 34 
