A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Self-heat-preservation anti-freezing lining structure for traffic tunnel in seasonally frozen soil area
The invention belongs to the technical field of anti-freezing heat preservation of tunnels in cold areas, and discloses a self-heat-preservation anti-freezing lining structure for a traffic tunnel in a seasonally frozen soil area; the self-heat-preservation anti-freezing lining structure comprises a primary support, a waterproof layer and a secondary lining; surrounding rock is closely attached to the primary support; the waterproof layer is arranged between the primary support and the secondary lining; the secondary lining is composed of aerogel concrete; and the aerogel concrete is obtained by mixing and stirring hydrophobic aerogel particles, superfine cement, silica fume, high-strength light fine aggregate, natural water, polyacrylonitrile fibers, a superplasticizer and a defoaming agent. The problems that when heat preservation and insulation materials such as polyurethane are laid in an existing tunnel in a cold area, the heat insulation performance is reduced under the seasonal freeze-thaw action, the durability is poor, the site construction process is complex, and safe operation of the tunnel in the cold area is affected can be solved.
本发明属于寒区隧道防冻保温技术领域，公开了一种季节冻土区交通隧道自保温防冻衬砌结构，包括：初期支护、防水层以及二次衬砌；围岩密贴所述初期支护；所述初期支护和二次衬砌之间设置所述防水层；所述二次衬砌由气凝胶混凝土构成；其中，所述气凝胶混凝土由疏水的气凝胶颗粒、超细水泥、硅灰、高强轻细集料、天然水、聚丙烯腈纤维、高效减水剂以及消泡剂混合搅拌得到。本发明可解决现有寒区隧道铺设聚氨酯等保温隔热材料在季节冻融作用下隔热性能降低，耐久性差，现场施工过程复杂，影响寒区隧道安全运营等问题。
Self-heat-preservation anti-freezing lining structure for traffic tunnel in seasonally frozen soil area
The invention belongs to the technical field of anti-freezing heat preservation of tunnels in cold areas, and discloses a self-heat-preservation anti-freezing lining structure for a traffic tunnel in a seasonally frozen soil area; the self-heat-preservation anti-freezing lining structure comprises a primary support, a waterproof layer and a secondary lining; surrounding rock is closely attached to the primary support; the waterproof layer is arranged between the primary support and the secondary lining; the secondary lining is composed of aerogel concrete; and the aerogel concrete is obtained by mixing and stirring hydrophobic aerogel particles, superfine cement, silica fume, high-strength light fine aggregate, natural water, polyacrylonitrile fibers, a superplasticizer and a defoaming agent. The problems that when heat preservation and insulation materials such as polyurethane are laid in an existing tunnel in a cold area, the heat insulation performance is reduced under the seasonal freeze-thaw action, the durability is poor, the site construction process is complex, and safe operation of the tunnel in the cold area is affected can be solved.
本发明属于寒区隧道防冻保温技术领域，公开了一种季节冻土区交通隧道自保温防冻衬砌结构，包括：初期支护、防水层以及二次衬砌；围岩密贴所述初期支护；所述初期支护和二次衬砌之间设置所述防水层；所述二次衬砌由气凝胶混凝土构成；其中，所述气凝胶混凝土由疏水的气凝胶颗粒、超细水泥、硅灰、高强轻细集料、天然水、聚丙烯腈纤维、高效减水剂以及消泡剂混合搅拌得到。本发明可解决现有寒区隧道铺设聚氨酯等保温隔热材料在季节冻融作用下隔热性能降低，耐久性差，现场施工过程复杂，影响寒区隧道安全运营等问题。
Self-heat-preservation anti-freezing lining structure for traffic tunnel in seasonally frozen soil area
一种季节冻土区交通隧道自保温防冻衬砌结构
HAN FENGLEI (author) / LIU TAO (author) / ZHANG XUEFU (author) / YU WENBING (author) / LIU ZHEN (author) / LIU YAN (author) / LIU ZONGHAN (author)
2021-06-18
Patent
Electronic Resource
Chinese
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