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. 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. 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 can be snapped into the groove.

A cast-in-place gasket construction 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. First and second gasket portions of the construction extend in different directions and are connected to each other at a first joint. The gasket portions are made of an elastomeric material having a first durometer on the Shore A hardness scale. The joint comprises an elastomeric material having a second and lesser durometer on the Shore A hardness scale. A method for replacing a damaged frame-like gasket construction is also disclosed.

A tunnel system includes at least two adjacent tunnel lining systems and a sealing system. Moreover, the tunnel lining systems can include plural tunnel lining segments.

The present application discloses an integrated immersed tube section and an installation method thereof, and an installation and closure method of immersed tube sections, wherein the integrated immersed tube section includes a standard immersed tube section; and closed annular telescopic water stop joints are arranged at two ends of the standard immersed tube section. By the adoption of the integrated immersed tube section of the present application, a finally closed immersed tube section is still the standard immersed tube section, and a foundation which is the same as that for common tube sections is used, namely the foundation for the finally closed immersed tube section and the foundation for other immersed tube sections do not have a rigidity difference, so that the risk of the non-uniform settlement of the tube sections during operation of the subsea tunnel is effectively reduced; and in addition, the finally closed immersed tube section and other immersed tube sections are installed with the same installation equipment, and no extra equipment such as a floating crane is needed. Compared with an existing method, the methods have the advantages of eliminating installation of one special final joint, simplifying the construction process and reducing the engineering risk. As offshore special construction equipment and ships are very expensive in rent, use of the integrated immersed tube section substantially reduces the cost and saves various resources.

An apparatus for stabilizing a crack or joint has an elongated plate with a cam gear end and a pin end. The cam gear end has a first aperture and the pin end has a second aperture. A cam gear is sized to fit within the first aperture of the elongated plated. The cam gear has a stud pin aperture positioned off a center point of the cam gear and a rotation point. A first stud pin is sized to pass through the stud pin aperture of the cam gear and a second stud pin is sized to pass through the second aperture. A locking mechanism for locking the cam gear in relation to the elongated plate is included.

An apparatus for stabilizing a crack or joint has an elongated plate with a cam gear end and a pin end. The cam gear end has a first aperture and the pin end has a second aperture. A cam gear is sized to fit within the first aperture of the elongated plated. The cam gear has a stud pin aperture positioned off a center point of the cam gear and a rotation point. A first stud pin is sized to pass through the stud pin aperture of the cam gear and a second stud pin is sized to pass through the second aperture. A locking mechanism for locking the cam gear in relation to the elongated plate is included.

A compliant trim for use between concrete slabs is disclosed, intended to seal the joints and provide a decorative cover over the forms. The compliant trim is placed on the forms prior to the pouring of concrete. The compliant trim contains features which anchor the compliant trim to the slab at numerous points along its length, thereby constraining the compliant trim against any shrinkage effects, and doing so in a manner that introduces minimal stress concentration into the slabs. When the compliant trim is anchored to both of the adjacent slabs, it is capable of following slab motions due to thermal expansion or other environmental effects. The surface of the compliant trim may be used to support the screed. Additionally, the compliant trim may be used to produce a chamfered or radius edge, thereby eliminating the need to radius-trowel the slab.

A compliant trim for use between concrete slabs is disclosed, intended to seal the joints and provide a decorative cover over the forms. The compliant trim is placed on the forms prior to the pouring of concrete. The compliant trim contains features which anchor the compliant trim to the slab at numerous points along its length, thereby constraining the compliant trim against any shrinkage effects, and doing so in a manner that introduces minimal stress concentration into the slabs. When the compliant trim is anchored to both of the adjacent slabs, it is capable of following slab motions due to thermal expansion or other environmental effects. The surface of the compliant trim may be used to support the screed. Additionally, the compliant trim may be used to produce a chamfered or radius edge, thereby eliminating the need to radius-trowel the slab.

A multifunctional wall clamping device of a static piling machine comprises a wall clamping platform (1), a machine body (31), and a wall pressing device. A through machine body hole (6) is vertically provided in the center of the machine body (31). The wall pressing device is disposed on the machine body (31). The wall pressing device comprises a wall pressing oil cylinder (7) and a jacking oil cylinder (27). The wall pressing oil cylinder (7) is disposed on an upper support (25). The jacking oil cylinder (27) is disposed on a lower support (26). The wall clamping platform (1) comprises two horizontal U-shaped pincer-like boxes (2) identical in geometric size. Openings of the boxes are opposite, and the two boxes are arranged on the same axis to form a combination with a rectangular section. The top surface of the wall clamping platform (1) is hinged by a piston rod (8) of the wall pressing oil cylinder (7) and vertically suspended in the machine body hole (6). Rolling wheels (9) are mounted on the side walls of the periphery of the wall clamping platform (1), and act on the corresponding inner side walls of the machine body hole (6) and a rectangular column (30) of the upper support by means of the wall pressing oil cylinder (7) to perform up-down vertical reciprocating motion.

The present application discloses a final joint of an immersed tunnel, a prefabrication method and an installation method, wherein the final joint includes two end surfaces connected with installed adjacent tube sections; the two end surfaces are both tilted surfaces, so that the longitudinal profile of the final joint along an installation direction is of an inverted trapezoid structure; and the final joint further may be of a structure with a tube section I and a tube section II which are connected with each other. The final joint of the immersed tunnel is simple in structure, convenient to control and relatively high in precision, thereby reducing lots of open sea diving work and lowering a risk of installation quality defects; as prefabrication procedures are simple, the final joint may be prefabricated in a land factory and then transported to the site, thereby reducing influence of weather conditions on construction; a body structure of the final joint is prefabricated in the factory, and then the overall final joint is transported to the site for installation; water stop systems realize quick water stop, thus forming a dry construction environment; and therefore, the influence of weather and tidal current conditions on a project may be reduced, and a quality risk may be lowered.