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A platform for research: civil engineering, architecture and urbanism
Jointless expansion structure of cement concrete bridge deck pavement layer
The invention discloses a jointless expansion structure of a cement concrete bridge deck pavement layer. The jointless expansion structure of the cement concrete bridge deck pavement layer is based on good extension properties of a high-ductility cement-based composite material, and replaces a traditional expansion joint structure to eliminate internal stress generated when a bridge girder longitudinally expands. The jointless expansion structure is mainly composed of a polytetrafluoroethylene sliding layer, anchor bars and a high-ductility cement-based composite material structure layer. A high-ductility cement-based composite material anchorage region is reliably connected with a cement concrete bridge girder body and a bridge deck slab, the bottom face of an expansion region and the polytetrafluoroethylene sliding layer freely slide, and therefore the good expansion structure is formed. Meanwhile, a continuous and flat interface is formed on the upper surface, so the problems that a traditional expansion joint is insufficient in durability and driving comfort is poor can be effectively solved.
Jointless expansion structure of cement concrete bridge deck pavement layer
The invention discloses a jointless expansion structure of a cement concrete bridge deck pavement layer. The jointless expansion structure of the cement concrete bridge deck pavement layer is based on good extension properties of a high-ductility cement-based composite material, and replaces a traditional expansion joint structure to eliminate internal stress generated when a bridge girder longitudinally expands. The jointless expansion structure is mainly composed of a polytetrafluoroethylene sliding layer, anchor bars and a high-ductility cement-based composite material structure layer. A high-ductility cement-based composite material anchorage region is reliably connected with a cement concrete bridge girder body and a bridge deck slab, the bottom face of an expansion region and the polytetrafluoroethylene sliding layer freely slide, and therefore the good expansion structure is formed. Meanwhile, a continuous and flat interface is formed on the upper surface, so the problems that a traditional expansion joint is insufficient in durability and driving comfort is poor can be effectively solved.
Jointless expansion structure of cement concrete bridge deck pavement layer
ZHAO YANJING (author) / JIANG LING (author) / NI FUJIAN (author) / ZHOU LAN (author)
2015-07-08
Patent
Electronic Resource
English