A railroad sleeper (1) for fixation of at least a pair of rails (2,2′) of a railroad network is provided, including a contact surface (3), wherein each rail of the pair of rails (2,2′) is fixed spaced apart from each other, the railroad sleeper (1) being configured by including a hollow sector (4) delimited by association of the contact surface (3) with the anchorage walls (5,5′), thus establishing a free portion (17) adjacent to the anchorage walls (5,5′) and opposite the contact surface (3). An embodiment in which the hollow sector (4) of the railroad sleeper is delimited by a support surface and the process of manufacturing a railroad sleeper is also provided.

Systems and methods for automatically offloading railroad ties from a railroad car are described. A system embodiment includes, but is not limited to, a support platform including a support surface to support railroad ties in a vertical stack configuration; a support structure to hold the railroad ties stacked in the vertical stack configuration in a magazine during transit, the support structure defining a gap; a gate transitionable between a closed configuration and an open configuration, wherein the closed configuration blocks at least a portion of the gap, and wherein the open configuration permits passage of the railroad ties through the gap; and a lift structure including at least one member transitionable between a lowered configuration and a raised configuration, wherein the raised configuration positions the member above the support surface to raise an end of the railroad ties to offload the vertical stack.

Systems and methods for automatically offloading railroad ties from a railroad car are described. A system embodiment includes, but is not limited to, a support platform including a support surface to support railroad ties in a vertical stack configuration; a support structure to hold the railroad ties stacked in the vertical stack configuration in a magazine during transit, the support structure defining a gap; a gate transitionable between a closed configuration and an open configuration, wherein the closed configuration blocks at least a portion of the gap, and wherein the open configuration permits passage of the railroad ties through the gap; and a lift structure including at least one member transitionable between a lowered configuration and a raised configuration, wherein the raised configuration positions the member above the support surface to raise an end of the railroad ties to offload the vertical stack.

The invention relates to a bridge for a rail vehicle, including a track, which is formed from two parallel rails (S1, S2) and is provided for being driven on by the rail vehicle, and including a bridge beam (B1, B2), which supports the rails (S1, S2) of the track and is aligned transversely to a support profile (T1, T2) of the bridge. The bridge beam (B1, B2) is supported by a height adjustment element (R1, R2) arranged between the support profile (T1, T2) and the bridge beam (B1, B2), and wherein at least one fastening device is provided by means of which the position of the bridge beam (B1, B2) is fixed in relation to the height adjustment element (R1, B2). In order to be able to achieve an exact positioning of the bridge beams at their target height with reduced effort and at low costs, the invention proposes to design the height adjustment element (R1, R2) as a single-piece block, whose height (HR) is adapted to the distance between the support profile (T1, T2) and the bridge beam (B1, B2) by means of material-removing processing. Preferably, the bridge beam and the height adjustment element thereby consist of a plastic-based material, in particular a plastic-sand mixture.

The invention relates to a bridge for a rail vehicle, including a track, which is formed from two parallel rails (S1, S2) and is provided for being driven on by the rail vehicle, and including a bridge beam (B1, B2), which supports the rails (S1, S2) of the track and is aligned transversely to a support profile (T1, T2) of the bridge. The bridge beam (B1, B2) is supported by a height adjustment element (R1, R2) arranged between the support profile (T1, T2) and the bridge beam (B1, B2), and wherein at least one fastening device is provided by means of which the position of the bridge beam (B1, B2) is fixed in relation to the height adjustment element (R1, B2). In order to be able to achieve an exact positioning of the bridge beams at their target height with reduced effort and at low costs, the invention proposes to design the height adjustment element (R1, R2) as a single-piece block, whose height (HR) is adapted to the distance between the support profile (T1, T2) and the bridge beam (B1, B2) by means of material-removing processing. Preferably, the bridge beam and the height adjustment element thereby consist of a plastic-based material, in particular a plastic-sand mixture.

Natural fiber composite construction materials including boards, siding, railroad ties, standing seam roofing panels, roofing panels that support solar-electric modules, and roofing panels that support vegetation are provided. In various embodiments, composite construction materials comprise about 50-60% kenaf fiber.

Natural fiber composite construction materials including boards, siding, railroad ties, standing seam roofing panels, roofing panels that support solar-electric modules, and roofing panels that support vegetation are provided. In various embodiments, composite construction materials comprise about 50-60% kenaf fiber.

The present invention discloses an assembled bamboo sleeper, which is obtained by using a bamboo unit as a raw material, dried and modified at the temperature of 110-180° C., undergone coating treatment using a dopamine solution, adhesive dipping, curing and solidifying, assembling and gluing, further solidifying, further treatment using a dopamine solution, and anti-mildew and/or anti-corrosion and/or anti-insect treatment, and then fastened. The present invention further provides a preparation method for the foregoing bamboo sleeper. The bamboo sleeper prepared in the present invention is green and environmentally friendly, and applicable for ballasted tracks of railways and urban rail transit systems.

The present invention discloses a one-step integrally-formed bamboo sleeper. For the one-step integrally-formed bamboo sleeper, a bamboo unit is used as a raw material, to be dried and modified at the temperature of 110-180° C., and then subject to adhesive dipping, adhesive throwing, solidification, dopamine solution treatment, anti-mildew and/or anti-corrosion and/or anti-insect treatment, and fastening, to obtain the one-step integrally-formed bamboo sleeper with a density of 0.9-1.5 g/cm.sup.3. The present invention further provides a preparation method for the foregoing bamboo sleeper. The bamboo sleeper prepared in the present invention has a suitable elastic modulus, and applicable for ballasted tracks of railways and urban rail transit systems.

The present invention relates to a railroad sleeper (1) for fixation of at least a pair of rails (2,2′) of a railroad network, comprising a contact surface (3), wherein each rail of the pair of rails (2,2′) is fixed spaced apart from each other, the railroad sleeper (1) being configured by comprising a hollow sector (4) delimited by association of the contact surface (3) with the anchorage walls (5,5′), thus establishing a free portion (17) adjacent to the anchorage walls (5,5′) and opposite the contact surface (3). The present invention further discloses an embodiment in which the hollow sector (4) of the railroad sleeper is delimited by a support surface and the process of manufacturing a railroad sleeper.