Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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 (Autor:in) / JIANG LING (Autor:in) / NI FUJIAN (Autor:in) / ZHOU LAN (Autor:in)
08.07.2015
Patent
Elektronische Ressource
Englisch