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多年冻土地区修筑铁路路基,因冻土土质、温度、水作用及其他荷载作用的影响出现应力场变化与重新分布,以此容易引起铁路路基翻浆、融沉等质量病害。那么,怎样规避多年冻土地区铁路路基发生冻害成为了重中之重,也是高寒地区建设工程施工重点研究的课题之一。本文阐述多年冻土特性及影响、铁路路基设计原则、路基施工技术、混凝土施工技术,旨在为我国铁路工程路基施工研究提供理论帮助。
The construction of railway embankment in permafrost regions will lead to the change and redistribution of stress field due to the influence of frozen soil soil, temperature, water and other loads, which will easily cause the quality problems of the roadbed such as airing and sinking. So, how to avoid the permafrost area railway subgrade freezing damage has become the most important, but also the construction project in the alpine region, one of the key research topics. This paper describes the characteristics and impacts of permafrost, the design principles of railway embankment, roadbed construction technology and concrete construction technology, aiming to provide theoretical help for the research of railway construction in our country.