Ice temporary bridge structure

FIELD: floating bridges, for instance temporary bridges for load transportation over ice.

SUBSTANCE: structure includes ice blanket in which vertical holes are drilled for the full bridge structure length so that the holes are located from both bridge sides. Reinforced concrete blocks connected to ropes are inserted through the holes so that the blocks are located under the ice blanket. Discs having diameters exceeding hole diameters are connected to upper block ends. Rope lengths are selected to prevent ice blanket movement in upward direction with respect to initial ice position if flexural-gravity waves are generated in ice blanket.

EFFECT: increased load-bearing capacity.

1 dwg

 

The invention relates to the field of hladotehnika and can be used when creating the ice terminal for the transportation of cargo.

The prior art known from the device 1. Peschansky, I.S., Lagoudera and hladotehnika. - L.: Sea transport. 1963 - 345 C.), which consists in creating the ice of the upper structure made in the form of a truss.

The disadvantage of the prototype is the complexity of the device for hardening ice to create an ice crossings when exposed to dynamic loads.

The task of the invention is to reduce the intensity of Flexural-gravity waves (VVM), resulting in ice cover from moving to the it load.

Technical result achieved when the solution of the problem is the simplification of the device to increase the strength of the ice crossing, and to enhance its reliability.

The essential features characterizing the invention

Restrictive signs: a device to create an icy crossing, including ice cover.

Distinguishing characteristics: the ice sheet throughout the ways of cargo transportation on the both sides in the ice made through vertical holes through which the ice with the help of ropes omitted concrete blocks to the top to the persons cables attached disks diameters, exceeding the diameters of the holes, the length of the cables is selected so that in case of VVM ice is not raised above the initial position relative to the bottom.

It is known (Zuev, VA, Kozin V.M. Use of hovercraft for the destruction of the ice cover. Vladivostok: Publishing house of the FENU - 1988. - 146 C.)that the movement of surface pressure leads to VVM. When the speed of movement of a load that matches the speed of propagation of these waves, the amplitude of the last increase dramatically and the ice starts to break down.

To reduce the intensity, i.e. the height of the VVM, the folding of the height of the crest and the depth of depression of exclusive breastfeeding are encouraged to use the proposed device, not allowing the ice sheet to rise relative to their initial position, that is to reduce its deformation, Flexural stresses and thereby improve the strength of the ice crossing.

The device and its principle of operation is as follows.

In ice cover, all over the ways of transportation, on the both sides are drilled through the ranks of the vertical holes. Through them under the ice at the bottom of the pool is lowered, for example, concrete blocks with attached ropes, to the upper ends of which are attached with steel wheels diameters, reviewsony hole diameters. The length of the cables is selected so that in case of VVM ice towered, that is not raised above the initial position relative to the bottom. While driving on the crossing dynamic loads in ice will occur VVM, the height of which is less than the height of exclusive breastfeeding in the ice without this device, due to hold ice ropes, then there will be a damping of the VVM. In the spring, when the operation of the terminal will be dangerous, concrete blocks with cables and disks removed.

The invention is illustrated in the drawing, which shows an example of its implementation.

The ice sheet 1, all over the ways of transportation 2, on either side of a vertically drilled rows of through holes 3. Through them under the ice at the bottom of the pool 4 omitted cables 5 with concrete blocks 6. To the upper ends of the cables 5 are attached with steel wheels 7.

Device to create an icy crossing, which includes ice, wherein the ice sheet throughout the ways of cargo transportation on the both sides in the ice made through vertical holes through which the ice with the help of ropes omitted concrete blocks, to the upper ends of the cables attached disks with diameters greater than the diameters opened the th, the length of the cables is selected so that in case of Flexural-gravity waves ice is not raised above the initial position relative to the bottom.



 

Same patents:

FIELD: movable or portable bridges, floating bridges adapted to convey loads over ice cover.

SUBSTANCE: method to transport vehicle having weight exceeding load-carrying ability of ice cover over ice involves moving vehicle having weight not exceeding load-carrying ability of ice cover at resonance speed; moving vehicle having weight exceeding load-carrying capacity to ice cover line when above vehicle having lesser weight has moved away from ice cover line for distance equal to 2/3 of resonance bending-gravity wave length; initiating above vehicle having larger weight movement with above resonance speed. Resonance bending-gravity wave length is determined from where D is cylindrical stiffness of ice plate, ρ and h - ice density and thickness, g - gravity, H - water body depth.

EFFECT: increased load-bearing capacity of ice cover.

1 dwg

Ice bridge // 2260648

FIELD: building, particularly to construct temporary roads across lakes and other water obstacles.

SUBSTANCE: ice bridge includes cooling plant, pipelines connected to cooling plant. Pipelines are submersed in water and suspended by wire ropes. Cooling plant has reducers for pressure reduction, 10 MPa gaseous nitrogen cylinders and liquid nitrogen cylinders adapted to fill pipelines with liquid and gaseous nitrogen mixture. The pipelines include several coiled sections or formed as straight and finned pipes. The pipelines are arranged in several rows and extend in vertical or horizontal directions. The pipelines are submersed for 0.1-5 m depth and are connected by wire ropes to balloons floating at water surface or to finned pipes driven in ground of river bottom and connected one to another by diaphragms. The cooling plant provides water freezing within 3-5 km range and obtains ice having thickness of 3 m or more.

EFFECT: increased water freezing rate.

5 dwg

FIELD: watercraft.

SUBSTANCE: invention can be used in designing ramp and propulsion and steering gear and their hydraulic systems. Novelty in proposed water craft is that it is furnished with streamlined carrying frame for fastening devices of propulsion and steering complex installed in hull aft part and formed by two pairs of rigid longitudinal beams hinge secured by inner ends of aft sheet of hull in zone located under loading side coupled by flexible cross beams in each pair and support bar between pairs. Hydraulic heads of propulsors are hinge-mounted on outer ends of each pair of longitudinal beams, being secured on said beams to form additional cross tie between beams. Carrying frame is furnished with power hydraulic cylinders connected with hydraulic system and installed to control position of heads and loading side by turning carrying frame in aft sheet hinge joints. Body of each is provided with upper roller support, being rolling support for each hinged loading side at its opening, and lower platform being rigid base interacting with ground at resting of hinged loading side on head body in loading position of loading side. Novelty in hydraulic system of watercraft is that it is furnished, in additional to propulsor control hydraulic cylinders, with hydraulic cylinders for setting ramps, changing thrust vector, fixing loading side and locking carrying frame. Each hydraulic cylinder, including propulsor position control hydraulic cylinders, are supplied through parallel hydraulic lines connected with main line, with electric control in each line. Invention contains description of design peculiarities of each line providing required modes of operation of watercraft.

EFFECT: improved performance of watercraft and creating of hydraulic system providing required mode of operation of watercraft.

9 cl, 11 dwg

The invention relates to bridge engineering, in particular to methods aiming floating bridges in the winter when there is ice cover

The invention relates to the production of ice and can be used for the reconstruction of crossings

The invention relates to the field of construction of pontoon bridges used for the passage of railway rolling stock and, in particular, is intended for cross-docking

The invention relates to the field of construction of bridges, and more particularly to a tip floating bridges

The invention relates to the field of construction of bridges, and more particularly to a tip floating bridges

Floating vehicle // 2201353
The invention relates to amphibious transport and transport-ferry tools and can be used for the construction of floating tracked amphibians

The invention relates to the field of crossing-bridge means, and more particularly to a method of construction of low-water bridges

FIELD: watercraft.

SUBSTANCE: invention can be used in designing ramp and propulsion and steering gear and their hydraulic systems. Novelty in proposed water craft is that it is furnished with streamlined carrying frame for fastening devices of propulsion and steering complex installed in hull aft part and formed by two pairs of rigid longitudinal beams hinge secured by inner ends of aft sheet of hull in zone located under loading side coupled by flexible cross beams in each pair and support bar between pairs. Hydraulic heads of propulsors are hinge-mounted on outer ends of each pair of longitudinal beams, being secured on said beams to form additional cross tie between beams. Carrying frame is furnished with power hydraulic cylinders connected with hydraulic system and installed to control position of heads and loading side by turning carrying frame in aft sheet hinge joints. Body of each is provided with upper roller support, being rolling support for each hinged loading side at its opening, and lower platform being rigid base interacting with ground at resting of hinged loading side on head body in loading position of loading side. Novelty in hydraulic system of watercraft is that it is furnished, in additional to propulsor control hydraulic cylinders, with hydraulic cylinders for setting ramps, changing thrust vector, fixing loading side and locking carrying frame. Each hydraulic cylinder, including propulsor position control hydraulic cylinders, are supplied through parallel hydraulic lines connected with main line, with electric control in each line. Invention contains description of design peculiarities of each line providing required modes of operation of watercraft.

EFFECT: improved performance of watercraft and creating of hydraulic system providing required mode of operation of watercraft.

9 cl, 11 dwg

Ice bridge // 2260648

FIELD: building, particularly to construct temporary roads across lakes and other water obstacles.

SUBSTANCE: ice bridge includes cooling plant, pipelines connected to cooling plant. Pipelines are submersed in water and suspended by wire ropes. Cooling plant has reducers for pressure reduction, 10 MPa gaseous nitrogen cylinders and liquid nitrogen cylinders adapted to fill pipelines with liquid and gaseous nitrogen mixture. The pipelines include several coiled sections or formed as straight and finned pipes. The pipelines are arranged in several rows and extend in vertical or horizontal directions. The pipelines are submersed for 0.1-5 m depth and are connected by wire ropes to balloons floating at water surface or to finned pipes driven in ground of river bottom and connected one to another by diaphragms. The cooling plant provides water freezing within 3-5 km range and obtains ice having thickness of 3 m or more.

EFFECT: increased water freezing rate.

5 dwg

FIELD: movable or portable bridges, floating bridges adapted to convey loads over ice cover.

SUBSTANCE: method to transport vehicle having weight exceeding load-carrying ability of ice cover over ice involves moving vehicle having weight not exceeding load-carrying ability of ice cover at resonance speed; moving vehicle having weight exceeding load-carrying capacity to ice cover line when above vehicle having lesser weight has moved away from ice cover line for distance equal to 2/3 of resonance bending-gravity wave length; initiating above vehicle having larger weight movement with above resonance speed. Resonance bending-gravity wave length is determined from where D is cylindrical stiffness of ice plate, ρ and h - ice density and thickness, g - gravity, H - water body depth.

EFFECT: increased load-bearing capacity of ice cover.

1 dwg

FIELD: floating bridges, for instance temporary bridges for load transportation over ice.

SUBSTANCE: structure includes ice blanket in which vertical holes are drilled for the full bridge structure length so that the holes are located from both bridge sides. Reinforced concrete blocks connected to ropes are inserted through the holes so that the blocks are located under the ice blanket. Discs having diameters exceeding hole diameters are connected to upper block ends. Rope lengths are selected to prevent ice blanket movement in upward direction with respect to initial ice position if flexural-gravity waves are generated in ice blanket.

EFFECT: increased load-bearing capacity.

1 dwg

Motor unit // 2298507

FIELD: bridge crossing equipment; ferries and floating bridges.

SUBSTANCE: proposed motor unit includes displacement hull with joints in sides, engine mounted inside hull and water-jet propeller, two hinged pontoons which are articulated with hull and mechanism for opening and folding the pontoons. Each hinged pontoon is provided with torsion-loaded swivel hydrostatic shield on external side which is articulated with hinged pontoon in area of its bottom; hinged pontoons are also provided with mechanism for turning the shield; this mechanism is made in form of hydraulic cylinder with rod secured in hull of hinged pontoon. Thrust roller secured on end of rod is received by guide of hydrostatic shield.

EFFECT: reduced resistance of shuttle ferry due to improved streamlining of projecting lower part of motor unit.

5 dwg

FIELD: bridge construction, particularly floating bridges, for example, pontoon bridges.

SUBSTANCE: method involves unloading land-based and river-based pontoon sections on ice, expanding the pontoon sections in temporary bridge location area; sealing pontoons of each pontoon section by means of top and bottom jointing means; moving each pontoon section to temporary bridge construction site over ice; serially jointing pontoon sections with each other along temporary bridge length and breaking ice by blasting charges spaced from bridge axis. Longitudinal grooves are created in ice from each bridge side with the use of ice-cutters so that ice thickness in groove bottom area is not more than 10 cm. After that elongated charges including several detonating fuse strings are laid in the grooves. The grooves are filled with wet snow or water and elongated charges are blasted to break ice in each groove. After that ice under bridge sections is broken by vehicle movement over the bridge.

EFFECT: decreased time and increased safety of temporary bridge construction.

4 dwg

FIELD: construction industry; bridges.

SUBSTANCE: method of pontoon bridge equipping at high flow speed is performed using set of railway pontoon ribbon bridge and differs in the fat that bridge stiffness on water obstacle is provided by anchors which are installed on bridge top and bottom sides and are attached to bottom of outer pontoons with the help of ropes which pass through lugs fixed on rings welded to deck and bottom of outer pontoons.

EFFECT: increasing vertical component of hydrodynamic forces, reducing the different of member to top or bottom sides, and improving pontoon bridge reliability.

3 dwg

FIELD: construction industry.

SUBSTANCE: ice crossing construction method refers to ice-technology industry, and can be used when designing ice crossing meant for load transportation. Snow shall be removed from ice surface, and the latter shall be covered with air-tight film. Space between ice surface and film is ventilated with fan cold ambient air. Cold air flow intensifies heat exchange on ice surface and provides its fast cooling, and thickness increase.

EFFECT: fast putting into operation of ice crossing.

1 dwg

Pontoon bridge // 2351706

FIELD: construction, road construction.

SUBSTANCE: invention is related to the field of bridge engineering and is intended for erection of pontoon bridges over water obstacles on a tight schedule and with the least material and labour expenses. It is achieved by the fact that pontoon bridge comprises pontoons open at the bottom, on which bridge supports are mounted to carry spans and road way, and spacers that connect peripheral parts of pontoon to fixed anchors on soil, and every pontoon is arranged in the form of packet of vertically oriented adjacent tanks that are inverted upwards with their bottoms and are connected to system of air supply and its pressure control in every of them, at that spacers are located on the opposite sides of pontoon to form triangular figures with every of them, which are oriented in crossing planes, and have dampers and/or control mechanisms, preferably with remote control, their stretching in process of bridge erection and/or its operation. At that vertically oriented tanks form rows of cells in section with horizontal plane, which are evenly located on at least part of section area.

EFFECT: higher reliability of pontoon bridge operation at different dynamic effect at it, also from wave and wind loads due to provision of stability in pontoons that carry spans and provision of their controlled submersion at specified depth.

4 cl, 2 dwg

FIELD: transport, construction.

SUBSTANCE: method of producing ice ferry consists in cleaning ice surface of snow, placing a layer of heat-isolation material through the cut, along the ice ferry routed, and pressing aforesaid layer to the ice layer lower surface. A continuous layer of ice floats is placed between the ice surface lower surface and the said heat-isolation material.

EFFECT: higher load-carrying capacity of ice ferry.

Up!