Abrégé

A long-distance tunnel full-circle two-lining inverted arch construction formwork system. The formwork system comprises a customized steel formwork (1), steel pipe supports (7), and turnbuckles (8). The steel pipe supports (7) are arranged between longitudinal main ridges and longitudinal rails and a primary lining (6) and are used for supporting vertical buoyancy; the turnbuckles (8) are arranged between the two sides of the formwork and reserved steel bars and used for resisting horizontal loads generated during asymmetric pouring. In addition, disclosed is a transfer method for an inverted arch construction formwork. Formwork transfer is carried out by adopting a cantilever gantry crane (2) and a transport flatbed trolley (3), and traveling rails of the cantilever gantry crane (2) and the transport flatbed trolley (3) are integrated on the customized steel formwork (1), without additionally laying rails. The formwork system is high in strength, high in rigidity and simple, the formwork transfer method is easy to operate and high in work efficiency, long-distance full-circle tunnel two-lining inverted arch construction efficiency can be improved, and the construction period is shortened.

Classes IPC  ?

• E21D 11/10 - Revêtement avec des matériaux de construction avec du béton coulé en placeCoffrage ou autre équipement adapté à cet effet

Abrégé

A rapid construction method for a secondary lining of a small-section tunnel. While in-tunnel cleaning is performed after tunnel holing-through, a rebar transport cart (1) and a wheeled dumper (2) are used for transporting and storing secondary lining rebars to a designated position in the tunnel; and after tunnel cleaning is completed, the secondary lining is constructed from the two ends of the tunnel to the middle at the same time; a customized inverted arch formwork (3) is first used for constructing a lower inverted arch, and then, multiple gantry-type arch wall formwork trolleys (6) are used for following an alternate bay method to construct an upper arch wall, wherein the multiple sections of gantry-type arch wall formwork trolleys form a set and are connected in a hinged manner, which can adapt to construction of a curved tunnel. According to the method, the single construction section is long, the process linkage is compact, and rapid and efficient construction of the secondary lining of the tunnel can be achieved; moreover, the whole construction process is high in mechanization degree and greatly reduces the labor intensity; and the overall customized production and use of construction formworks guarantee the construction quality, the construction period is short, and the economic benefit is remarkable.

Classes IPC  ?

• E21D 11/10 - Revêtement avec des matériaux de construction avec du béton coulé en placeCoffrage ou autre équipement adapté à cet effet
• E21D 11/40 - Dispositifs ou appareils pour la manutention ou le placement des unités de revêtement des tunnels ou des galeries

Abrégé

A full-circle secondary lining inverted arch construction formwork system for a long-distance tunnel and a formwork transporting method adopt a customized steel formwork, a steel pipe support, and a turn buckle. The steel pipe support is arranged on the longitudinal main edge, and is provided between the longitudinal rails and a primary lining for supporting vertical buoyancy. The turn buckle is arranged between two sides of the formwork and a reserved steel bar for resisting horizontal load generated during asymmetric pouring. A cantilever gantry crane and a transportation flat car are used for formwork transporting, wherein travel rails of the cantilever gantry crane and the transportation flat car are integrated on the customized steel formwork, and there is no other rail. According to the present, the formwork has high strength and rigidity, the formwork system is simple.

Classes IPC  ?

• E21D 11/10 - Revêtement avec des matériaux de construction avec du béton coulé en placeCoffrage ou autre équipement adapté à cet effet
• E21D 11/40 - Dispositifs ou appareils pour la manutention ou le placement des unités de revêtement des tunnels ou des galeries

Abrégé

A rapid construction method for a secondary lining of a small-section tunnel includes steps of: transporting and store secondary lining steel bars to a designated position in the tunnel with a steel bar transport vehicle and a wheel type dump truck; after the tunnel is cleaned, simultaneously constructing the secondary lining from two ends to a middle of the tunnel; constructing a lower inverted arch with a customized inverted arch formwork and then constructing an upper arch wall with a plurality of portal arch wall formwork trolleys; wherein the portal arch wall formwork trolleys form a set, and are connected by hinges, so as to construct in a curve tunnel. The rapid construction method has a long single construction section, and procedure connection is compact, thereby realizing rapid and efficient construction of the secondary lining.

Classes IPC  ?

• E21D 11/40 - Dispositifs ou appareils pour la manutention ou le placement des unités de revêtement des tunnels ou des galeries
• E21D 11/18 - Éléments de cintre