Abstract:
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.
Abstract:
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).
Abstract:
A system for lining a perimeter surface of an excavation; the perimeter surface defined by a solid structure; the perimeter surface lined by means of precast concrete panels which are affixed to the solid structure.
Abstract:
A coupler device is described for joining together two adjacent members 7,17 and in particular structural members which may for example may be tunnel segments, well segments, building segments, precast concrete members, preformed panels and other items used in but not limited to the construction industry. The coupler device has an elongate body 2 carrying spaced apart first and second projecting portions 6,16, wherein each of the first and second projecting portions is configured to be received within a complementarily recessed portion 8,18 in a face of a respective member and thereby in use to join together the two respective members.
Abstract:
Method for producing a construction element, in particular a tunnel element, from a curing material, such as concrete, in a mould, said construction element being provided with a watertight seal on at least one side thereof, wherein a gasket is used comprising a deforming body which is produced from a yielding material, such as rubber. According to the invention a base is produced from a relatively strong material, which base may or may not be detachable from the deforming body. Said base with or without said deforming body is placed against an inner side of the mould, said curing material is cast in the mould, and said curing material is cured to form said construction element with said watertight seal.
Abstract:
A method and a structural element for the construction of a directionally flexible and watertight tunnel lining (1) or tunnel course (1), the method using pre-fabricated elements of concrete or sandwich structure (3, 4, 5; 73;73′). Interspace between such elements and extending transversely of the direction of the tunnel course or tunnel lining receives an interspace cast (14) using an outer flexible formwork (2) in the form of skirts (2′, 2″) attached to the outside of the elements (3, 4, 5; 73, 73′), and which through interconnection (11) thereof form a flexible, “bag-like” formwork (2) on the outside of the elements (3, 4, 5; 73, 73′). Together with conventional formwork (12) on the inside of the elements (3, 4, 5; 73, 73′) there is formed a defined cavity (13) which can be filled with injectable mass of concrete. After the concrete has hardened it will provide support to the installed elements (3, 4, 5; 73, 73′) as well as providing support relative to exposed surface portion of rock surface (10). The elements (3, 4, 5; 73, 73′) can be provided on the outside with a membrane (17). Further, the elements can be provided with injection paths (16) in order to at any time establish a completely watertight tunnel lining (1).
Abstract:
A tunnel liner used for a shield tunneling method for a tunnel having a diameter of 1.5 to 7 m is fabricated by dividing a ring-shaped liner into a plurality of parts in the circumferential direction. The tunnel liner is required to be excellent in the dimensional accuracy with respect to the outer peripheral surface, to be tight, to be high in strength, and to be high in water tightness at the abutment between the adjacent liners. The tunnel liner is fabricated by a method of filling each arcuate enclosed hollow form with concrete, vibro-compacting concrete, molding the end surfaces of the tunnel liner, mounting the forms within a centrifugal molding drum, and tightly molding the outer peripheral surface of the forms by applying of a centrifugal force. According to this fabrication method, it is possible to effectively fabricate an excellent tunnel liner at a low cost.
Abstract:
A device for joining two members together such as concrete segments for a tunnel lining ring includes a first sleeve for fitting in one of the members to open at a surface thereof and a second sleeve for fitting in the other member. A connecting pin with external ribbing fits in both sleeves, which have internal ribbing, the ribbing of the connecting pin and/or the ribbing of at least one of said sleeves being of resilient material and extending in a substantially parallel direction at an inclined angle to a longitudinal axis of the connecting pin when it is, in use, inserted in the sleeves. The bore of one sleeve is of greater cross-sectional area in one dimension than the bore in the other sleeve, in which other bore the connecting pin can engage as a tight fit, while being able to engage in the firstmentioned bore and traverse it in said one dimension.
Abstract:
The invention relates to a constructional element such as a tunnel lining, part of which is shown in the drawing, comprising adjacent segments which have facing surfaces between which there is a joint which is physically deformable under load. The joint comprises a toroidal body or tube of substantially circular cross section received in complementary or semi-circular facing recesses in the surfaces respectively, and comprises a flexible material such as polypropylene and which means in the form of a nozzle for gaining access to the interior of the body. The body is initially filled with a fluid, which could be a liquid or gas, through the nozzle, which can then be maintained in the body by closing the nozzle as by a valve. When round in which the tunnel is set has settled, the joint is "locked up" by passing a flowable settable material such as a cementitious mortar material from a grout pump into the body, which thereby displaces the fluid which passes out of the body through an outlet which may be part of the nozzle, may be a separate nozzle, or may be the bleed valve.
Abstract:
A bridge or tunnel construction consisting of one or more arch units (10), each unit formed from a pair of reinforced concrete arch segments (11 and 12) interconnected to form the crown of the arch unit with the arch unit or units being overlaid with a compacted interacting soil layer.