The invention relates to a lift drive for a rail-guided cantilever construction device (2), in particular for use in bridge construction. The cantilever construction device (2) comprises a main frame (3, 3′) which is guided by at least one rail (4a, 4b, 4′a, 4′b) for receiving at least one formwork. The lift drive comprises a lift device (5, 5′), wherein a first end of the lift device (5, 5′) is designed to be connected to the main frame (3, 3′), and a second lift device (5, 5′) end opposite the first end can be moved relative to the main frame (3, 3′) when the first end of the lift device (5, 5′) is connected to the main frame (3, 3′); a first fixing device (6) which is connected to the first end of the lift device (5, 5′) and is designed to fix the first end of the lift device (5, 5′) with respect to the at least one rail (4a, 4b, 4′a, 4′b); and a second fixing device (7) which is connected to the second end of the lift device (5, 5′) and is designed to fix the second end of the lift device (5, 5′) with respect to the at least one rail (4a, 4b, 4′a, 4′b). The first and second fixing device (6, 7) can each be releasably fixed with respect to the at least one rail (4a, 4b, 4′a, 4′b) in a reversible manner.

The invention relates to a lift drive for a rail-guided cantilever construction device (2), in particular for use in bridge construction. The cantilever construction device (2) comprises a main frame (3, 3′) which is guided by at least one rail (4a, 4b, 4′a, 4′b) for receiving at least one formwork. The lift drive comprises a lift device (5, 5′), wherein a first end of the lift device (5, 5′) is designed to be connected to the main frame (3, 3′), and a second lift device (5, 5′) end opposite the first end can be moved relative to the main frame (3, 3′) when the first end of the lift device (5, 5′) is connected to the main frame (3, 3′); a first fixing device (6) which is connected to the first end of the lift device (5, 5′) and is designed to fix the first end of the lift device (5, 5′) with respect to the at least one rail (4a, 4b, 4′a, 4′b); and a second fixing device (7) which is connected to the second end of the lift device (5, 5′) and is designed to fix the second end of the lift device (5, 5′) with respect to the at least one rail (4a, 4b, 4′a, 4′b). The first and second fixing device (6, 7) can each be releasably fixed with respect to the at least one rail (4a, 4b, 4′a, 4′b) in a reversible manner.

Stay-in-place forms and methods and equipment for installing thereof. A concrete form includes a vertical component and a horizontal component, the vertical component located substantially perpendicular to the horizontal component. Also, the form includes an interior surface, at least a portion of the interior surface providing a form for supporting uncured concrete; wherein the uncured concrete forms a concrete structural portion upon curing of the uncured concrete; and wherein the interior surface remains attached to the concrete structural portion after curing. The form may include inserts and compatible form attachments. Also, forms including recesses may be utilized to reduce the weight thereof. Lifting equipment and accessories may be utilized to lift the form from a form holder and set same in place. Forms contain the work area as soon as it is installed to minimize fall hazards and the time, costs, and downtime associated with installation of safety measures.

Stay-in-place forms and methods and equipment for installing thereof. A concrete form includes a vertical component and a horizontal component, the vertical component located substantially perpendicular to the horizontal component. Also, the form includes an interior surface, at least a portion of the interior surface providing a form for supporting uncured concrete; wherein the uncured concrete forms a concrete structural portion upon curing of the uncured concrete; and wherein the interior surface remains attached to the concrete structural portion after curing. The form may include inserts and compatible form attachments. Also, forms including recesses may be utilized to reduce the weight thereof. Lifting equipment and accessories may be utilized to lift the form from a form holder and set same in place. Forms contain the work area as soon as it is installed to minimize fall hazards and the time, costs, and downtime associated with installation of safety measures.

The invention relates to a method for producing a concrete tube (12) for a hyperloop passenger transport system. The concrete tube (12) is concreted in situ by means of a formwork device (10). The formwork device (10) has a formwork carriage (34) which moves forwards during concreting. The formwork carriage (34) has an inner form (20) and an outer form (22) for shuttering the concrete tube (12). An interspace (24) between the inner form (20) and outer form (22) is filled, in particular continuously, with concrete (32). The solidified concrete tube (12) can be supported on pillars (58a, 58b) via bearings. The freshly solidified portion of the concrete tube (12) is preferably supported on the inside by inner rollers (52a, 52b) and on the outside by outer rollers (54a). In order to support the formwork carriage (34) on the pillars (58a, 58b), the formwork device (10) can have supporting rollers (56a, 56b). The invention further relates to the formwork device (10) for implementing the method and to the concrete tube (12) produced by the method for the hyperloop passenger transport system

An improved bridge overhang bracket assembly may include top, diagonal and side members. A hanger element may be mounted to the top member and pivotally attached proximate to the top end of the side member. The hanger element may be translatable along the top member for adjusting its longitudinal position, to vary the positions of the diagonal and side members quickly and easily, without disassembly, and may enable folding of the members to a shipping/storage position. A second hanger element may be mounted to the top member for attaching the assembly to a tie rod. The diagonal member may include at least one connection tab for receiving a bolt to connect the top and diagonal members together in the shipping/storage position. Also disclosed is a fastener assembly for securing a side rail to a T-bolt channel.

A bridge laying device (2) for laying a bridge (3), in particular a single-piece bridge, includes a main part (5) for arranging on a load transport vehicle (7), in particular a hook-lift vehicle, a laying arm (12) for setting down the bridge (3), and an extending device (6) for moving the laying arm (12) from a transport position into an extended placing position. In certain embodiments, a bridge laying system (1) includes a load transport vehicle (7), in particular a hook-lift vehicle, and a bridge laying device, (2) which can be arranged on the load transport vehicle (7). A method for laying a bridge (3), in particular a single-piece bridge, using a bridge laying device (2) includes moving an extending device (6) for moving the laying arm (12) from a transport position into an extended placing position.

A bridge laying device (2) for laying a bridge (3), in particular a single-piece bridge, includes a main part (5) for arranging on a load transport vehicle (7), in particular a hook-lift vehicle, a laying arm (12) for setting down the bridge (3), and an extending device (6) for moving the laying arm (12) from a transport position into an extended placing position. In certain embodiments, a bridge laying system (1) includes a load transport vehicle (7), in particular a hook-lift vehicle, and a bridge laying device, (2) which can be arranged on the load transport vehicle (7). A method for laying a bridge (3), in particular a single-piece bridge, using a bridge laying device (2) includes moving an extending device (6) for moving the laying arm (12) from a transport position into an extended placing position.

A method for producing a concrete tube for a hyperloop passenger transport system. The concrete tube is concreted in situ by means of a formwork device. The formwork device has a formwork carriage which moves forwards during concreting. The formwork carriage has an inner form and an outer form for shuttering the concrete tube. An interspace between the inner form and outer form is filled, in particular continuously, with concrete. The solidified concrete tube can be supported on pillars via bearings. The freshly solidified portion of the concrete tube is preferably supported on the inside by inner rollers and on the outside by outer rollers. In order to support the formwork carriage on the pillars, the formwork device can have supporting rollers. The formwork device for implementing the method and to the concrete tube produced by the method for the hyperloop passenger transport system.

A bridge laying device (2) for laying a bridge (3), in particular a single-piece bridge, includes a main part (5) for arranging on a load transport vehicle (7), in particular a hook-lift vehicle, a laying arm (12) for setting down the bridge (3), and an extending device (6) for moving the laying arm (12) from a transport position into an extended placing position. In certain embodiments, a bridge laying system (1) includes a load transport vehicle (7), in particular a hook-lift vehicle, and a bridge laying device, (2) which can be arranged on the load transport vehicle (7). A method for laying a bridge (3), in particular a single-piece bridge, using a bridge laying device (2) includes moving an extending device (6) for moving the laying arm (12) from a transport position into an extended placing position.