The method of construction of a bridge across the water obstacle

 

The invention relates to a bridge. The method of construction of a bridge across the water obstacle involves performing in the waters of the supports drilling combined grillage piles using a self-elevating platform mounted on driven inventory columns, and a floating crane, conveyor, rear Assembly of metal span structures with subsequent longitudinal sliding or transportation afloat and installation design position spans with the formation of a continuous bridge. What's new is that to the place of erection of bearing down floating crane, which perform lighthouse piles, which set the guide conductor with cells that have coaxial axes of the piles constructed supports Jack-up platform is carried out in a non-self-propelled pontoon Assembly with through shafts for the installation of columns, air and Salerno-drainage pipes and mounted on the deck of the pontoon Assembly along its side intended for installation with side, facing the conductor at a distance from each other, a pair of limiting elements, preferably facing each other regiments channels, between which laid the bulk material is Jena drilling machine. Then build using drilling machines and tubes as described in the invention of the technology of piles, concreted grillage and body support. The technical result provided by the present invention is to reduce labor and material costs and reduce construction time by ensuring manufacturability of the erection of the bridge and mechanization of all operations and ensure that the design position of the piles. 12 Il.

The invention relates to a bridge and can be used in the construction of bridges over waterways, preferably at greater depths.

There is a method of construction of a bridge across a water barrier, providing for the implementation of artificial Islands in the water and the production of islets of erecting poles with the subsequent performance of the superstructure (see, for example, article A. Ostrovsky Century New life of Andrew bridge, Transport construction, No. 11, 1999, Transstroimost, Moscow, 1999, S. 17-19).

The disadvantage of this method is the high complexity of erecting poles and duration of construction due to the need of dumping Islands and their subsequent dismantling.

Closest to the invention in its essence is katorii supports drilling combined grillage piles using a Jack-up platform, mounted on driven inventory columns, and a floating crane, conveyor, rear Assembly of metal span structures with subsequent longitudinal sliding or transportation afloat and installation design position spans with the formation of a continuous bridge (see for example, article JSC “Volgomost” Mostostroy №3) - 35 years, journal of bridge engineering, No. 1-2, 1997, TIMRA, Moscow, 1997, S. 5-14).

The disadvantage of this method of erection of the bridge are certain difficulties associated with the construction of the supports, which is carried out using the drilling equipment, located at the working bridges that do not provide the exact design position of the supports, the construction of which requires more labor and time, which affects the economy and the construction time.

The present invention is to increase the efficiency of work and reduce the time of construction of the bridge.

The problem is solved due to the fact that the method of construction of a bridge across the water obstacle, including the execution in the waters of the supports drilling combined grillage piles using a self-elevating platform mounted on driven inventory columns, and Playa del or transportation afloat and installation design position spans with the formation of a continuous bridge, according to the invention to the place of erection of bearing down floating crane, which perform lighthouse piles, which set the guide conductor with cells that have coaxial axes of the piles constructed supports Jack-up platform is carried out in a non-self-propelled pontoon Assembly with through shafts for the installation of columns, air and Salerno-drainage pipes and mounted on the deck of the pontoon Assembly along its side intended for installation with side, facing the conductor at a distance from each other, a pair of limiting elements, preferably facing each other regiments channels, between which is placed the bulk material, preferably the sand and on top of it - concrete slabs, which can be moved along the mounting of the pontoon mounted drilling machine with bucket brown and bucket-Widener, on the deck of the pontoon Assembly symmetrical to its longitudinal axis stack sections of the columns, and then mounting the pontoon towed to the place of erection of the next bearing and install it on one side of the transverse axis of the erected support with the placement and installation of the pontoon next to the conductor, raskrepljajut mounting according to their length and depth in the bottom waters and hang mounting pontoon on columns, to the place of erection of bearing down floating crane with two plaskota of the pontoons and shipped to turned constructed to support the pontoon sections tubes, place a floating crane on the other side of the transverse axis of the erected support, a floating crane raise the pontoon and place it in another cell of the sending conductor bottom section of the protective tube with the guide ribs in the upper part, in which also the crane establish the following section of the protective tube, which connects with the lower welding of butt seam and lining, then installed on the crane hydrovibrator immerse protective pipe in the ground to the design elevation with simultaneous development of the soil in the cavity of the protective tube airlift to save at the last stage of a soil core with a height of not less than 2 m from the bottom of the pipe, then install the mounting pontoon drilling machine on the axis of constructed piles, pipe piles attach the removable section of pipe to maintain a positive pressure of water in the well, bucket drills drilling machines develop the soil in the borehole below the knife part of the lower section of the protective tube to the design elevation at constant topping up of water in the well and control the water level in the well, it is then make the installation of the reinforcement cage by lowering into the well of the first section of the reinforcement cage, which hung by the top ring on the protective tube to the first section of the reinforcement cage crane served successively the following sections, each of which is attached to the previous lowering into the well and hanging by the top ring to the protective tube, and after the building of the reinforcement cage to the design length of the reinforcement cage is lowered into the well to the design elevation, and then placed in the hole of the concrete mixture through a hopper method vertically floating pipes, and the excess water pressure support in a protective tube before reaching the surface of the concrete mix mark, exceeding the mark of the bottom protective pipe not less than 1 m, and after concreting of all piles to the protective pipe weld console, preferably of I-beam, which collect internal and external strapping sportowego fence with stud fastening, plunge into the ground using hydrovibrator tongue, spontoon the fence occiput sandy soil to the level of the bottom of the backfill layer, then the method vertically repositionable stack pipe concrete backfill layer and after concrete backfill layer strength not less than 2.5 MPa to produce pumping water from sportowego ograzhdayut formwork and install rebar Foundation then concreted by grillage concrete placement inclined at an angle to the horizontal of not more than 30layers not thicker than 40 cm from the stacking direction in the same direction in all layers and compacting each layer deep vibrators, and after the concrete grillage strength not less than 1.5 MPa assemble formwork and install the valve body support with subsequent cleaning of the surface of the grillage from cement film of water and air jet and concreting of the lower body support to a level below the level of the spacer mounting sportowego fencing, and concrete mix is placed to seal the horizontal layers of equal thickness in the same direction in all layers, with the laying of each next layer is produced prior to the concrete setting in the previous layer, and after concrete lower body support design strength not less than 80%, and transmitting struts pressure from sportowego fences produce concrete of the upper body support to the design elevation.

The technical result provided by the present invention is to reduce labor and material costs and reduce construction time by providing technologicallybased floating equipment, modernized for the transportation of used machinery and pipes, and to work with him on the construction of pile foundations supports in the shortest possible time while at the same time high quality of structures constructed bridge, safety production work on rivers with large water depths and ensuring ecological safety of the environment.

The invention is illustrated by drawings, where

in Fig.1 shows a Jack-up platform, side view;

in Fig.2 - the same, in the plan;

in Fig.3 - the same, with knock-inventory columns, side view;

in Fig.4 - floating crane with plaskota and guiding the conductor, in the plan;

in Fig.5 - the same, with the Jack-up platform, side view;

in Fig.6 - dip protective pipe in the ground, side view;

in Fig.7 - development drilling machine of the soil in the hole, side view;

in Fig.8 - concreting the bottom of the pile, side view;

in Fig.9 - implementation of the backfill layer, a side view,

in Fig.10 - bearing with tongue-and-groove fence in the plan;

in Fig.11 - construction of pile Foundation support, side view;

in Fig.12 - the construction of the body support, side view.

The method of construction of the bridge (not shown) through the water obstacle 1 involves performing in the waters of the supports 2 on drilling unite the s columns 6, and floating crane 7, conveyor-rear Assembly of metal span structures (not shown), followed by longitudinal sliding or transportation afloat and installation design position spans with the formation of a continuous bridge (not shown). To the place of erection of supports (2) fail-crane 7, which perform lighthouse piles (not shown). At lighthouse piles (not shown) install guide the conductor 8 with 9 cells, which have coaxial axes of the piles 4 constructed of a support 2. Jack-up platform 5 is carried out in a non-self-propelled pontoon Assembly 10 with through shafts 11 to the casing 6, the air and Salerno-drainage pipes (not shown) and mounted on the deck 12 of the mounting of the pontoon 10 along its edges 13, intended for installation on the side facing the conductor 8, at a distance from each other, a pair of limiting elements 14, preferably from facing each other regiments channels, between which is placed the bulk material 15, preferably sand, and on top of it - concrete slab 16. Ferroconcrete plates 16 can be moved along the mounting Pont installation of the pontoon 10 is symmetrical to its longitudinal axis stack section columns 6, after mounting the pontoon 10 is towed to the site of erection of the next support 2 and install it on one side of the transverse axis of the erected support 2 with the placement and installation of the pontoon 10 is near the conductor 8. Raskrepljajut mounting pontoon Assembly 10 winches (not shown) at anchor (not shown). Then floating crane 7 set through the shaft 11 of the column 6 with increasing their length and depth in the bottom 19 of the waters. Post mounting pontoon 10 on the columns 6. To the place of erection of supports (2) fail-crane 7 with two plaskota 20, 21 of the pontoons and shipped to turned constructed to support the pontoon 22 sections of the protective tube 22. Place floating crane 7 on the other side of the transverse axis 23 constructed of a support 2, a floating crane 7 raise the pontoon 22 and set in another cell 9 guide the conductor 8 of the lower section 24 of the protective tube 22 with the guide ribs in the upper part (not shown), in which also the crane 7 install the following section 25 of the protective pipe 22 which connects with the bottom 24 by welding butt joint 26 and pads (not shown). Then installed on the crane 7 hydrovibrator 27 immerse protective pipe 22 into the ground 28 to project the Academy of Sciences) with the save at the last stage of a soil core (not shown) height not less than 2 m from the bottom 31 of the pipe 22. After that install on the mounting pontoon 10 drilling machine 17 on the axis 32 of constructed piles 4. To the protective tube 22 piles 4 attach the removable section of pipe 22 to maintain a positive pressure of water in the well 33. Scoop brown (not shown) of the drilling machine 17 develop the soil in the hole 33 of the lower blade portion 34 of the lower section 24 of the protective tube 22 to the design elevation at constant topping up of water in the well 33 and the control of water level in the well 33. Bucket-Widener 18 drilling machine 17 develop the ground the bottom of the bore 33 with the formation of extended cavity 35. After that make the installation of the reinforcement cage (not shown) by lowering into the well 33 of the first section of the reinforcement cage, which hung by the top ring (not shown) on the protective tube 22. The first section of the reinforcing cage valve 7 serves consistently following sections, each of which is attached to the previous lowering into the well 33 and hanging by the top ring to the protective tube 22. After extension of the reinforcement cage to the design length of the reinforcing cage is lowered into the bore 33 to the design elevation, and then placed in the hole of the concrete mix 36 through a hopper 37 met the surface of the concrete mix grades exceeding the elevation of the bottom 31 of the protective tube 22 is not less than 1 m After concreting all 4 piles to the protective tubes 22 are welded console 38, preferably of I-beam, which is collected 39 internal and external 40 strapping sportowego fence 41 with the spacer bracket 42, plunge into the ground using hydrovibrator 27 of the tongue. In spontoon the fence 41 occiput sand 43 to the level of the bottom 44 of the backfill layer 45, after which the method vertically repositionable stack pipe concrete 46 backfill layer 45. After concrete backfill layer 45 strength not less than 2.5 MPa to produce pumping water from sportowego fence 41, the surface of the backfill layer 45 is cleaned from mud and loose concrete. Cut the 4 piles at the project mark, assemble formwork (not shown) and install valve (not shown) grillage 3, then concreted Foundation 3 by stacking concrete sloped at an angle to the horizontal of not more than 30layers not thicker than 40 cm from the stacking direction in the same direction in all layers and compacting each layer depth vibrators (not shown). After the concrete grillage 3 strength not less than 1.5 MPa mount the casing 47 and justamente film of water and air jet and concreting of the bottom portion 48 of the body support 2 to level located below the spacer mounting sportowego fence 41. This concrete mix is placed to seal the horizontal layers 49 of the same thickness in the same direction in all layers 49, and laying the next layer 49 is produced prior to the concrete setting in the previous layer 49. After concrete lower portion 48 of the body support 2 design strength not less than 80%, and transmitting struts 42 pressure from sportowego fence 41 produce concrete of the upper part 50 of the body support 2 to the design elevation.

Claims

The method of construction of a bridge across the water obstacle, including the execution in the waters of the supports drilling combined grillage piles using a self-elevating platform mounted on driven inventory columns, and a floating crane, conveyor, rear Assembly of metal span structures with subsequent longitudinal sliding or transportation afloat and installation design position spans with the formation of a continuous bridge, characterized in that to the place of erection of bearing down floating crane, which perform lighthouse piles, which set smart guard with mesh the initial installation of the pontoon through the mines for the installation of columns, air and Salerno-drainage pipes and mounted on the deck of the pontoon Assembly along its side intended for installation with side, facing the conductor at a distance from each other, a pair of limiting elements, preferably facing each other regiments channels, between which is placed the bulk material, preferably sand, and on top of it - concrete slabs, which can be moved along the mounting of the pontoon mounted drilling machine with bucket brown and bucket-Widener, on the deck of the pontoon Assembly symmetrical to its longitudinal axis stack section columns, after mounting the pontoon towed to the place of erection of the next bearing and install it on one side of the transverse axis of the erected support with the placement and installation of the pontoon next to the conductor, raskrepljajut mounting pontoon mounting the winch on the anchors, then floating crane set through the shaft of the column with increasing their length and depth in the bottom waters and hang mounting pontoon on columns, to the place of erection of bearing down floating crane with two plaskota of the pontoons and shipped to turned constructed to support the pontoon sections protective is from the pontoon and place it in another cell of the sending conductor bottom section of the protective tube with the guide ribs in the upper part, as the crane establish the following section of the protective tube, which connects with the lower welding of butt seam and lining, then installed on the crane hydrovibrator immerse protective pipe in the ground to the design elevation with simultaneous development of the soil in the cavity of the protective tube airlift to save at the last stage of a soil core with a height of not less than 2 m from the bottom of the pipe, then install the mounting pontoon drilling machine on the axis of constructed piles, pipe piles attach the removable section of pipe to keep the excess water pressure in the borehole, scoop brown drilling machines develop the soil in the borehole below the knife part of the lower section of the protective tube to the design elevation at constant topping up of water in the well and control the water level in the well, the bucket-Widener drilling machines develop the ground the bottom of the well with the formation of the extended cavity, and then make the installation of the reinforcement cage by lowering into the well of the first section of the reinforcement cage, which hung by the top ring on the protective tube to the first section of the reinforcement cage crane served successively the following sections, each of which are attached to the preds the aqueous frame to project the length of the reinforcement cage is lowered into the well to the design elevation, and then placed in the hole of the concrete mixture through a hopper method vertically floating pipes, and the excess water pressure support in a protective tube before reaching the surface of the concrete mix mark, exceeding the mark of the bottom protective pipe not less than 1 m, and after concreting of all piles to the protective pipe weld console, preferably of I-beam, which collect internal and external strapping sportowego fence with stud fastening, plunge into the ground using hydrovibrator tongue, spontoon the fence occiput sandy soil to the level of the bottom of the backfill layer, then by the method of vertically floating pipes laid concrete backfill layer and after concrete backfill layer strength not less than 2.5 MPa to produce pumping water from sportowego fence, the surface of the backfill layer is cleaned from mud and loose concrete, cut piles at the project mark, assemble formwork and install rebar Foundation then concreted by grillage concrete placement inclined at an angle to the horizontal of not more than 30° layers not thicker than 40 cm from the stacking direction in the same direction in all layers and compacting each layer of the deep vibrator is ru body support with subsequent cleaning of the surface of the grillage from cement film of water and air jet and concreting of the lower body support to a level located below the spacer mounting sportowego fencing, and concrete mix is placed to seal the horizontal layers of equal thickness in the same direction in all layers, with the laying of each next layer is produced prior to the concrete setting in the previous layer, and after concrete lower body support design strength not less than 80%, and transmitting struts pressure from sportowego fences produce concrete of the upper body support to the design elevation.

 

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