Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Gradient sprayed concrete structure for tunnel single-layer lining and construction method of gradient sprayed concrete structure
The invention discloses a gradient sprayed concrete structure for a single-layer lining of a tunnel and a construction method of the gradient sprayed concrete structure. The sprayed concrete structure takes a tunnel surrounding rock surface as a base, and sequentially comprises a mixed steel fiber sprayed concrete layer, a water-retaining sprayed mortar layer and a low-shrinkage sprayed concrete layer, the mixed steel fiber sprayed concrete layer comprises a cementing material, mixed fibers, a liquid early strength agent, a liquid alkali-free accelerator, aggregate and water, and the water retention sprayed mortar layer comprises ordinary Portland cement, silica fume, fine aggregate, heavy calcium powder, a liquid water reducer, a water retention modifier and a liquid alkali-free accelerator. The low-shrinkage sprayed concrete layer comprises a cementing material, a shrinkage reducing agent, a liquid water reducing agent, a liquid alkali-free accelerator and aggregate. The sprayed concrete structure for the single-layer lining is excellent in mechanical bearing strength and toughness, small in shrinkage crack and good in impermeability, and the adaptability of the tunnel single-layer lining structure under the complex terrain condition is improved.
本发明公开了一种隧道单层衬砌用梯度喷射混凝土结构及其施工方法。本发明所述喷射混凝土结构以隧道围岩面为基底，该混凝土结构依次包括混合钢纤维喷射混凝土层、保水喷射砂浆层及低收缩喷射混凝土层；所述混合钢纤维喷射混凝土层包括胶凝材料、混合纤维、液体早强剂、液体无碱速凝剂、集料及水，所述保水喷射砂浆层包括、普通硅酸盐水泥、微硅粉、细集料、重钙粉、液体减水剂、保水改性剂及液体无碱速凝剂，所述低收缩喷射混凝土层包括胶凝材料、减缩剂、液体减水剂、液体无碱速凝剂及集料。本发明所述单层衬砌用喷射混凝土结构的力学承载强度及韧性优良、收缩开裂小且抗渗性能好，以提高复杂地形条件下隧道单层衬砌结构的适应性。
Gradient sprayed concrete structure for tunnel single-layer lining and construction method of gradient sprayed concrete structure
The invention discloses a gradient sprayed concrete structure for a single-layer lining of a tunnel and a construction method of the gradient sprayed concrete structure. The sprayed concrete structure takes a tunnel surrounding rock surface as a base, and sequentially comprises a mixed steel fiber sprayed concrete layer, a water-retaining sprayed mortar layer and a low-shrinkage sprayed concrete layer, the mixed steel fiber sprayed concrete layer comprises a cementing material, mixed fibers, a liquid early strength agent, a liquid alkali-free accelerator, aggregate and water, and the water retention sprayed mortar layer comprises ordinary Portland cement, silica fume, fine aggregate, heavy calcium powder, a liquid water reducer, a water retention modifier and a liquid alkali-free accelerator. The low-shrinkage sprayed concrete layer comprises a cementing material, a shrinkage reducing agent, a liquid water reducing agent, a liquid alkali-free accelerator and aggregate. The sprayed concrete structure for the single-layer lining is excellent in mechanical bearing strength and toughness, small in shrinkage crack and good in impermeability, and the adaptability of the tunnel single-layer lining structure under the complex terrain condition is improved.
本发明公开了一种隧道单层衬砌用梯度喷射混凝土结构及其施工方法。本发明所述喷射混凝土结构以隧道围岩面为基底，该混凝土结构依次包括混合钢纤维喷射混凝土层、保水喷射砂浆层及低收缩喷射混凝土层；所述混合钢纤维喷射混凝土层包括胶凝材料、混合纤维、液体早强剂、液体无碱速凝剂、集料及水，所述保水喷射砂浆层包括、普通硅酸盐水泥、微硅粉、细集料、重钙粉、液体减水剂、保水改性剂及液体无碱速凝剂，所述低收缩喷射混凝土层包括胶凝材料、减缩剂、液体减水剂、液体无碱速凝剂及集料。本发明所述单层衬砌用喷射混凝土结构的力学承载强度及韧性优良、收缩开裂小且抗渗性能好，以提高复杂地形条件下隧道单层衬砌结构的适应性。
Gradient sprayed concrete structure for tunnel single-layer lining and construction method of gradient sprayed concrete structure
一种隧道单层衬砌用梯度喷射混凝土结构及其施工方法
ZENG LUPING (Autor:in) / WANG WEI (Autor:in) / QIAO MIN (Autor:in) / ZHAO SHUANG (Autor:in) / ZHU BOSONG (Autor:in) / CHEN JUNSONG (Autor:in) / WU QINGYONG (Autor:in) / SHAN GUANGCHENG (Autor:in) / HONG JINXIANG (Autor:in) / RAN QIANPING (Autor:in)
27.06.2023
Patent
Elektronische Ressource
Chinesisch
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