The invention relates to formwork for producing concrete tubbing (500) for a tunnel lining system, with a concrete tub to receive a volume of concrete required to produce the tubbing and, if necessary, to receive the intended reinforcement for the concrete tubbing (500), wherein the concrete tub has at least one base and walls (14, 15) on the base adapted to the mould, wherein at least one wall is arranged detachably from the base and can be pivoted relative to the base between a closed position and an opened position. According to the invention, the formwork has at least one drive system for pivoting the at least one wall between the open and the closed position and for holding same in the relevant position, and the drive system has at least one actuator for pivoting the at least one wall between the open and the closed position.

A conduit segment casting mold system includes at least one inner mold; at least one outer mold configured as at least two outer mold sections of opposed shapes that define a cavity between the at least two outer mold sections that is sized to at least partially enclose the at least one inner mold, each of the at least two outer mold sections including a respective mating surface, each of the at least two outer mold sections including at least one hole sized to receive a cable, and the at least one hole of a particular one of the at least two outer mold sections is aligned with the at least one hole of another particular one of the at least two outer mold sections when the mating surfaces of the particular one and the another particular one of the at least two outer mold sections are mated; and a mold base.

Couplings for coupling pre-cast construction segments together and pre-cast construction segments having such couplings. A construction coupling for connecting prefabricated segments includes a pair of anchors. Each anchor includes a central portion and a pair of legs. The central portion defines an elongated bore. The pair of legs extending from opposite sides of the central portion. Each leg extending in a direction generally transverse to the elongated bore and having a proximal end attached to the central portion and a free distal portion disposed away from the central portion. The construction coupling also includes a pin adapted to be received in the elongated bores of the pair of the anchors to connect the pair of anchors together.

The invention relates to a production plant for producing concrete tubbing (500) for a tunnel lining system having at least one formwork (10) for producing the concrete tubbing (500), wherein the production plant is designed either as a carousel system, which has at least one production line (200) with at least two work stations (210, 220, 230, 240, 250, 260) and with at least one transport route (110) between the at least two work stations (210, 220, 230, 240, 250, 260), each for executing at least one operation step in the production of the concrete tubbing (500), or as a stationary plant with at least two stationary formworks (10), wherein the operation steps necessary for producing the concrete tubbing (500) are each executed on the formworks (10), and with at least one curing station (300), for curing a concrete filled in the formwork (10) for producing the concrete tubbing (500). At least one robot (140) is provided to execute the at least one operation step on one of the at least two work stations (210, 220, 230, 240, 250, 260) or two formworks (10) are provided. At least one route (120) is provided which extends at least partially along or transverse to the at least one production line (200) or along or transverse to the formwork (10). At least one travel element (130) is provided on which the at least one robot (140) is arranged with a base (131) and with which the at least one robot (140) can be moved at least partially along or transverse to the at least one production line (200) or formwork (10).

A conduit segment casting mold system includes at least one inner mold; at least one outer mold configured as at least two outer mold sections of opposed shapes that define a cavity between the at least two outer mold sections that is sized to at least partially enclose the at least one inner mold, each of the at least two outer mold sections including a respective mating surface, each of the at least two outer mold sections including at least one hole sized to receive a cable, and the at least one hole of a particular one of the at least two outer mold sections is aligned with the at least one hole of another particular one of the at least two outer mold sections when the mating surfaces of the particular one and the another particular one of the at least two outer mold sections are mated; and a mold base.

A conduit segment casting mold system includes at least one inner mold; at least one outer mold configured as at least two outer mold sections of opposed shapes that define a cavity between the at least two outer mold sections that is sized to at least partially enclose the at least one inner mold, each of the at least two outer mold sections including a respective mating surface, each of the at least two outer mold sections including at least one hole sized to receive a cable, and the at least one hole of a particular one of the at least two outer mold sections is aligned with the at least one hole of another particular one of the at least two outer mold sections when the mating surfaces of the particular one and the another particular one of the at least two outer mold sections are mated; and a mold base.

Couplings for coupling pre-cast construction segments together and pre-cast construction segments having such couplings. A construction coupling for connecting prefabricated segments includes a pair of anchors. Each anchor includes a central portion and a pair of legs. The central portion defines an elongated bore. The pair of legs extending from opposite sides of the central portion. Each leg extending in a direction generally transverse to the elongated bore and having a proximal end attached to the central portion and a free distal portion disposed away from the central portion. The construction coupling also includes a pin adapted to be received in the elongated bores of the pair of the anchors to connect the pair of anchors together.

Concrete is formed by providing a wet layer of a first concrete 4, applying a second wet layer 6 of concrete on the first layer 4 of wet concrete and setting the layers 4 and 6 to provide a composite concrete structure, wherein at least one of the layers comprises, AACM (Alkali-Activated Cementitious Material). An ionic bond 2 is formed between the two layers. The AACM layer may comprise a reinforcement structure and cathodic protection.

Pre-cast segment for a reinforced concrete tunnel includes an arcuate structure having reinforcement and a cement agglomerate to cover structurally repeated annular tunnel. The arcuate structure includes respective opposite radial faces that lie on planes that are angularly spaced apart from one another and passing through a longitudinal axis of the tunnel. The radial faces configured to be moved towards respective radial faces of adjacent segments in order to form an annular tunnel portion, the circumferential faces configured to be moved towards respective circumferential faces of adjacent segments in order to form a linear extent of said tunnel along the longitudinal axis and an outer longitudinal face being at a greater distance than an inner longitudinal face from said longitudinal axis, is placed in contact with the ground, at least one investigation device is embedded in the arcuate structure to detect predetermined structural parameters.

The present invention discloses a centrifugal intelligent construction device for excavating concrete structure: a push-type excavation equipment, excavating rocks and soil, and collecting crushed stones, sand, soil, and water; a centrifugal screening equipment, performing centrifugal screening and classification collection on the collected crushed stones, sand, soil, and water; the intelligent batching equipment, which matches the classified crushed stones, sand, soil, and water according to their quality and fineness, adding cementitious materials, auxiliary materials, additives, and activators, and mixing them to obtain a mixed wet material; a centrifugal printing equipment, pumping and extruding the mixed wet materials, and using a centrifugal rotating outer cylinder to print and compact them into dense shape; an intelligent reinforcement equipment, integrating reinforcements between the layers of printed concrete strips by using the wall mounted laying, positioning and inserting reinforcements inside the printed concrete strips during the centrifugal printing process to form an integrated reinforced concrete structure. The device can achieve the additive and intelligent construction of closed concrete structures in underground, underwater, and extreme construction environments, solving the technical dilemma of insufficient engineering application scope of open additive manufacturing technology.