A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of prestressed immersed tunnel pipe joint
The invention provides a construction method of a prestressed immersed tunnel pipe joint. The construction method comprises the following steps of: binding pipe joint bottom plate steel bars in a dry dock, laying prestressed tensioned sleeves and steel strands, and pouring pipe joint bottom plate concrete; constructing pipe joint side wall and middle partition wall reinforced concrete; binding pipe joint top plate steel bars, laying prestressed tensioned sleeves and steel strands, and pouring top plate concrete; constructing door sealing structures at two ends of the pipe joint; locking the steel strands in anchoring ends on the pipe joint side walls, after the strength of the pipe joint concrete reaches a design value, horizontally tensioning the steel strands of the top plate and the bottom plate at the middle partition wall from the tensioning ends, and after the steel strands reach a tensioning preset value, locking the steel strands; grouting in the embedded sleeves, blocking the sleeves, and blocking anchorage device hand holes; and constructing a pipe joint outer waterproof layer, floating the pipe joint in the dry dock, mounting fitting-out components, and preparing pipe joint floating transportation. The construction method is suitable for reinforced concrete pipe joints with larger spans, and the adaptability of an immersed tunnel is enhanced; and the durability of the pipe joint can be improved, and the total construction cost of the immersed tunnel can be greatly reduced.
本发明提供了一种预应力沉管隧道管节建造方法，在干坞内绑扎管节底板钢筋，铺设预应力张拉的套管及钢绞线，浇筑管节底板混凝土；施工管节侧墙及中隔墙钢筋混凝土；绑扎管节顶板钢筋，铺设预应力张拉的套管及钢绞线，浇筑顶板混凝土；施工管节两端封门结构；钢绞线锁定在管节侧墙上的锚固端内，管节混凝土强度达到设计值后，顶板、底板的钢绞线同时在中隔墙处由张拉端水平张拉，到达张拉预定值后，锁定钢绞线；在预埋套管内注浆，套管封堵，锚具手孔封堵；施工管节外防水层，管节干坞内起浮，安装舾装构件，准备管节浮运。本发明适应于更大跨度的钢筋混凝土管节，沉管隧道适应性增强；可提高管节的耐久性，并且可大大降低沉管隧道总造价。
Construction method of prestressed immersed tunnel pipe joint
The invention provides a construction method of a prestressed immersed tunnel pipe joint. The construction method comprises the following steps of: binding pipe joint bottom plate steel bars in a dry dock, laying prestressed tensioned sleeves and steel strands, and pouring pipe joint bottom plate concrete; constructing pipe joint side wall and middle partition wall reinforced concrete; binding pipe joint top plate steel bars, laying prestressed tensioned sleeves and steel strands, and pouring top plate concrete; constructing door sealing structures at two ends of the pipe joint; locking the steel strands in anchoring ends on the pipe joint side walls, after the strength of the pipe joint concrete reaches a design value, horizontally tensioning the steel strands of the top plate and the bottom plate at the middle partition wall from the tensioning ends, and after the steel strands reach a tensioning preset value, locking the steel strands; grouting in the embedded sleeves, blocking the sleeves, and blocking anchorage device hand holes; and constructing a pipe joint outer waterproof layer, floating the pipe joint in the dry dock, mounting fitting-out components, and preparing pipe joint floating transportation. The construction method is suitable for reinforced concrete pipe joints with larger spans, and the adaptability of an immersed tunnel is enhanced; and the durability of the pipe joint can be improved, and the total construction cost of the immersed tunnel can be greatly reduced.
本发明提供了一种预应力沉管隧道管节建造方法，在干坞内绑扎管节底板钢筋，铺设预应力张拉的套管及钢绞线，浇筑管节底板混凝土；施工管节侧墙及中隔墙钢筋混凝土；绑扎管节顶板钢筋，铺设预应力张拉的套管及钢绞线，浇筑顶板混凝土；施工管节两端封门结构；钢绞线锁定在管节侧墙上的锚固端内，管节混凝土强度达到设计值后，顶板、底板的钢绞线同时在中隔墙处由张拉端水平张拉，到达张拉预定值后，锁定钢绞线；在预埋套管内注浆，套管封堵，锚具手孔封堵；施工管节外防水层，管节干坞内起浮，安装舾装构件，准备管节浮运。本发明适应于更大跨度的钢筋混凝土管节，沉管隧道适应性增强；可提高管节的耐久性，并且可大大降低沉管隧道总造价。
Construction method of prestressed immersed tunnel pipe joint
一种预应力沉管隧道管节建造方法
HE WEIGUO (author) / ZHOU HUAGUI (author) / CAO WEI (author) / FAN GUOGANG (author)
2021-06-11
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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