摘要
导致寒区隧道结构冻害最根本的原因是冻胀力大于构筑物的强度,以冻胀机理为核心,从隧道选址、设计和施工、弱化隧道边界条件等措施出发,对隧道冻害提出防治措施。以实际工程为背景,以聚氨酯的技术性能为依据,采用钢套钢聚氨酯保温管进行隧道冻害治理,经过两个冻融期的检验,冻害治理效果良好,对寒区隧道的建设和大修工程具有借鉴意义。
The most fundamental reason for freezing heaving pressure is larger than the strength of structure. damage of tunnel structure in cold region is that frost Taking frost heaving mechanism as the core, control measures for freezing damage of tunnel are put forward in the matter of site selection of tunnel, design, construction, boundary condition weakening of tunnel and so on. Taking practical engineering as the background and basing on technical performance of polyurethane, the treatment for freezing damage of tunnel is performed by adopting steel wrapped steel polyurethane thermal insulation pipe. After the inspection on two freezi periods, the treatment effect of freezing damage cold region and overhaul engineering. is good, thus providing reference for the construction ng - thawing of tunnel in
出处
《北方交通》
2016年第1期67-69,共3页
Northern Communications
关键词
寒区隧道
冻胀力
聚氨酯
冻害治理
保温隔热
Tunnel in cold region
Frost heaving pressure
Polyurethane
Treatment for freezing damage
Thermal insulation
