The present invention relates to an intelligent segment with concrete embedded with gas/liquid-filled steel pipes, the segment including a concrete portion, wherein the concrete portion serves as a main stress component of the segment, is made of ultra-high performance concrete and is provided with a hollow portion for arranging the steel pipes; a steel pipe portion, wherein the steel pipe portion includes the gas/liquid-filled steel pipes uniformly arranged on a tension side of the segment and penetrating through the entire segment in a circumferential direction, and a gas/liquid filling system and a pneumatic/hydraulic control system connected to the steel pipes; a reinforcing bar portion, wherein the reinforcing bar portion includes longitudinal bars for bearing the tension, stirrups for bearing the shear force and supports meeting construction structure requirements; and a joint portion, wherein the joint portion includes circumferential seam joints and longitudinal seam joints.

The present invention relates to an intelligent segment with concrete embedded with gas/liquid-filled steel pipes, the segment including a concrete portion, wherein the concrete portion serves as a main stress component of the segment, is made of ultra-high performance concrete and is provided with a hollow portion for arranging the steel pipes; a steel pipe portion, wherein the steel pipe portion includes the gas/liquid-filled steel pipes uniformly arranged on a tension side of the segment and penetrating through the entire segment in a circumferential direction, and a gas/liquid filling system and a pneumatic/hydraulic control system connected to the steel pipes; a reinforcing bar portion, wherein the reinforcing bar portion includes longitudinal bars for bearing the tension, stirrups for bearing the shear force and supports meeting construction structure requirements; and a joint portion, wherein the joint portion includes circumferential seam joints and longitudinal seam joints.

Disclosed are a fireproof material, a fireproof plate, a fireproof wall structure for tunnels and a construction method. The fireproof material includes the following components in weight ratio: 20-35 parts of aluminosilicate; 10-25 parts of calcium carbonate; 5-15 parts of magnesium oxide; 5-15 parts of silica; 20-40 parts of a binder; and 5-10 parts of a curing agent, the binder includes at least one of lithium silicate, potassium silicate and sodium silicate in combination with at least one of quartz sand and industrial sugar; and the curing agent is at least one of lithium oxide and magnesium oxide. In the preparation, firstly forming the mixture of aluminosilicate, magnesium oxide and silica into particles at 900° C.-1250° C., and then mixing the particles with calcium carbonate, the binder and the curing agent, and then pouring same into a forming mold and heating and pressing to form the fireproof material.

Disclosed are a fireproof material, a fireproof plate, a fireproof wall structure for tunnels and a construction method. The fireproof material includes the following components in weight ratio: 20-35 parts of aluminosilicate; 10-25 parts of calcium carbonate; 5-15 parts of magnesium oxide; 5-15 parts of silica; 20-40 parts of a binder; and 5-10 parts of a curing agent, the binder includes at least one of lithium silicate, potassium silicate and sodium silicate in combination with at least one of quartz sand and industrial sugar; and the curing agent is at least one of lithium oxide and magnesium oxide. In the preparation, firstly forming the mixture of aluminosilicate, magnesium oxide and silica into particles at 900° C.-1250° C., and then mixing the particles with calcium carbonate, the binder and the curing agent, and then pouring same into a forming mold and heating and pressing to form the fireproof material.

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 gasket for concrete structures such as tunnel segments includes a gasket body having a bottom face configured to be positioned against a surface of an associated tunnel segment. The bottom face may include a set of spaced indentations. First and second anchor members protrude from opposed side edges of the gasket adjacent the bottom face of the gasket. The anchor members are configured to attach the gasket to the tunnel segment during casting of a precast concrete member. The gasket body forms a groove in the concrete member and the anchor members form side channels in the groove. A respective fin can be provided on opposed side faces of the gasket. Should a defect be found in the original gasket, the gasket body can be removed from the groove of the concrete member relatively easily, even in the field, and a replacement gasket having corresponding anchor members, fins and indentations, can be snapped into the groove.

The invention relates to a tunnel lining composed of at least two concrete elements (10) each having at least one protective element (20) connected to the concrete element, wherein the protective element (20) has a protective portion which has a first side which faces the concrete element (10) and on which there is provided at least one connecting element (17) for producing a retaining connection between the protective portion and the concrete element (10), wherein the protective portion consists of at least one plastic, wherein the protective element (20) has at least one protective element seal (30) which is connected to the protective portion (20), wherein the connection to the protective portion (20) is gas-tight and liquid-tight, wherein a joint (40) is present between the at least two concrete elements (10) arranged to form the tunnel lining (300), wherein the joint (40) is sealed in a gas-tight and liquid-tight manner with respect to the tunnel interior (100) by at least one protective element seal (30) having a sealing action (first sealing action), and wherein the tunnel lining (300) is provided with drainage (C) into the tunnel interior (100).

The invention relates to a tunnel lining composed of at least two concrete elements (10) each having at least one protective element (20) connected to the concrete element, wherein the protective element (20) has a protective portion which has a first side which faces the concrete element (10) and on which there is provided at least one connecting element (17) for producing a retaining connection between the protective portion and the concrete element (10), wherein the protective portion consists of at least one plastic, wherein the protective element (20) has at least one protective element seal (30) which is connected to the protective portion (20), wherein the connection to the protective portion (20) is gas-tight and liquid-tight, wherein a joint (40) is present between the at least two concrete elements (10) arranged to form the tunnel lining (300), wherein the joint (40) is sealed in a gas-tight and liquid-tight manner with respect to the tunnel interior (100) by at least one protective element seal (30) having a sealing action (first sealing action), and wherein the tunnel lining (300) is provided with drainage (C) into the tunnel interior (100).

A tunnel reinforcement system having a plurality of structural supports positioned at spaced intervals along the length of a tunnel. Each structural support has a plurality of structural segments connected in an end to end relationship. Each structural segment has a plurality of bars connected to a first end and a second end, in which the first end comprises a first butt plate having one or more apertures, and the second end comprises a second butt plate having one or more apertures. The one or more apertures of the first butt plate or the second butt plate of a structural segment are coaxially aligned with the one or more apertures of the first butt plate or the second butt plate of another structural segment in an end to end relationship. The first butt plate or the second butt plate of a structural segment is attachable to the first butt plate or the second butt plate of another structural segment in an end to end relationship. Each structural support defines a geometric supporting framework.