冻裂是多年冻土地区沥青路面的主要病害。
Frost crack is the main failuve of asphalt pavement in permafrost region.
因此，研究分析多年冻土地区单桩应力状态有着很重要的现实意义。
So, analysing the stress state of single pile foundation in permafrost area has realistic meanings.
钢筋混凝土盖板涵、圆管涵和合金钢波管涵等都适应于多年冻土地区。
Rc slab culvert, circular culvert and alloy steel corrugated culvert are applicable to the secular frozen earth area.
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