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Method for transverse relocation of bridge superstructure for extended collar beam

Method for transverse relocation of bridge superstructure for extended collar beam
IPC classes for russian patent Method for transverse relocation of bridge superstructure for extended collar beam (RU 2557020):
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Device comprises piers and two parallel load-bearing strings stretched between the piers so that the strings are directed along axis of design position of each beam to be protruded into bridge span for accurate beam installation on support parts without beam displacement in transversal direction. Device also has support and suspended trolleys. Beam may be hanged to suspended trolley comprising electric drive for trolley movement along strings. Piers have string height control mechanisms, which change string heights over bridge piers. Suspended trolley may have mechanism, which puts front beam end on support parts.
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Device comprises pushing and braking means, pylon with guy lines fastened to span structure by the first ends thereof, and with flexible ties passing over rollers. The rollers are arranged on head of support, which is the first in span structure protrusion direction and is provided with haulage means. Receiving cantilever is arranged in lower part of the same support. Pylon has shoes arranged in lower part thereof. Guy lines and flexible ties are made as control and haulage block and tackle systems correspondingly. The block and tackle systems have lower blocks secured to pylon shoes by means of hinged clips. Upper blocks of control block and tackle system are secured to span structure bottom. Free cable ends of said block and tackle system are connected to winch installed on span structure. Free ends of cables included in haulage block and tackle system pass through support head rollers and are connected with haulage means made as winch with weight. Pylon is of telescopic type and consists of main and sliding members provided with coaxial orifices and fixers inserted in the orifices. Inclinometer is arranged in area of hinged pylon connection with span structure. Hinged clips are provided with sensors, which determine force in cables of control and haulage block and tackle systems. Device comprises means for span structure end flexure determination and deviation in plane view. Said means is made as target connected to span structure end and sighting device aimed on the target. The sighting device is installed on head of support, which is the first in span structure protrusion direction, and is coaxial to longitudinal bridge axis.
Span structure assemblage method and hoisting device for above method realization Span structure assemblage method and hoisting device for above method realization / 2301294
Method involves ashore assembling span structure on building slipway; advancing thereof to assemblage site by means of floating supports; lifting span structure with the use of hoisting device and installing thereof on permanent piers. Span structure is assembled as subassembly with main trusses without cantilevered roadway panel mounting on extreme panels. Floating supports are moved so that one permanent pier is between main trusses of span structure subassembly and subassembly center of gravity is in line between permanent pier axes. Then hoisting devices are installed on permanent piers of the bridge and after subassembly lifting to design mark subassembly hanged under hoisting device is moved in transversal direction up to longitudinal subassembly axis alignment with that of the bridge. Hoisting device comprises load-bearing frame, lifting hydraulic cylinders, catching means, suspension means and traverse fastened to bridge span subassembly. Transversal cantilevered beams are fixedly secured to permanent pier head. Load-bearing frame freely rests upon cantilevered beams. The cantilevered beams are provided with means for load-bearing frame movement in transversal direction. Cantilevered beams may be provided with beam trussing system located in lower parts thereof.
Method for assembling over-pier part of bridge span structure Method for assembling over-pier part of bridge span structure / 2247805
Method involves mounting blocks formed as reinforced concrete flooring panels by moving thereof in horizontal direction with the use of pushing means across bridge span, wherein before panels installation on support span parts panel is laid on sleds with the use of load-lifting means, sleds are installed on track, guiding tracks are placed on sleeper grid consisting of wooden studs and two transversal members, rollers are arranged between sleeper grids; installing supplementary columns and four jack posts in addition to main supports. Flooring panel movement is performed with the use of pushing means which displaces sleds up to span to be overlapped. After that flooring panel is lifted by means of jack posts, sleds are removed and displaced into their initial position. Then track is rolled, flooring panel is lowered on bridge piers with the use of hydraulic cylinders of jack posts; free jack posts are dismounted and mounted in the next bridge span simultaneously with supplementary columns installation. Track is placed on previously installed flooring panel with sleds on which next flooring panel is laid. All above operations are repeated.

FIELD: construction.

SUBSTANCE: first, a collar beam is extended on both sides of supports. After that, the lower flange of the existing structure is reinforced and lifted and rollers are installed under the lower flange. Then, jacks are installed and the existing superstructure is relocated with jacks in transverse direction of bridge supports. After that, rollers are removed and traffic flow is arranged on the relocated existing superstructure. After that, on the free part of the supports with the extended collar beam, near the relocated existing superstructure there installed is a block of the main beam of the first part of a new superstructure; then, the next block is installed, and blocks of the first part of the new superstructure are combined. After that, a cantilever orthotropic plate is installed and the first part of the new superstructure is provided with road pavement. Then, traffic flow is shifted to the first part of the new superstructure. After that, the existing superstructure is removed. Removal of the existing superstructure is performed at several stages: first, cantilevers are removed; after that, reinforced-concrete slabs are cut and removed; then, each beam is removed separately. In the place of the removed existing superstructure there installed is the block of the main beam of the second part of the new superstructure; then, the next block is installed, and blocks of the second part of the new superstructure are combined; after that, a cantilever orthotropic plate is installed. The first part of the new superstructure is combined with the second part of the new superstructure with a reinforced-concrete slab and provided with road pavement and enclosures.

EFFECT: improved method.

2 cl, 8 dwg

 

The invention relates to bridge construction, namely to methods and devices for sequential displacement of the bridge or its sections, and can be used in the reconstruction of bridges.

Known invention No. 1793031, IPC E04 G 23/00 "Method for reconstruction". The present invention relates to the construction, namely to methods of reconstruction of buildings and structures. The essence of the invention: installation of additional transverse beams and longitudinal beams with retractable devices. Using for the attachment of the walls of adjacent blocks of the old coating the sections of the new coating, the installation of these sections on beams with retractable devices, connecting them to the blocks with their subsequent development in the design position, the blocks of the system of relations between them, laying decking, trim, walls block the old coating with simultaneous strengthening of the mounting points of the transverse beams, removal of old flooring, strengthening the remaining supporting structures.

Closest to the claimed invention is the invention №815111, IPC 01D 21/00 "Method transverse shifting of heavy loads". The invention relates to bridge construction and can be used mainly for transverse shifting of the spans of the bridge, when they are installed on the supporting part. Method transverse shifting of heavy loads includes� battery installation hydraulic jacks on the piers under the jacking beam and cyclic lifting and moving the superstructure, before beginning the next cycle between the upper abutment faces jacks and jacking beam, lower bearing faces of the Jack and the support of a bridge placed skew with eccentricity relative to the vertical axis of each of the jacks supporting the sheets.

The disadvantage of this method is the considerable complexity of operations and the lack of stability of the bridge associated with the installation reference sheet, as well as the inconvenience of stopping the operation of the bridge.

The technical objective of this invention is the reconstruction of the superstructure with minimal complexity of operations in the shortest possible time and ensuring the possibility of operation of the bridge during the reconstruction.

The technical result is achieved due to the fact that the method of transverse shifting of the superstructure of the bridge on the widened beams is that: pre-userauth bolt on two sides of the supports. Then reinforce the bottom chord of the superstructure, lift it up and under the bottom belt rollers set. Then install the jacks and the jacks move the existing superstructure in the direction across the bridge piers. Then remove rollers and organize the movement of transport on peredvinuli existing floating structure. Then b�internal parts of the supports with extended bolt, near peredvinuli existing set spans the block of the main beam of the first part of the new superstructure, then install the next block and merge the blocks of the first part of the new superstructure. Then install the console orthotropic plate and equip the first part of the new superstructure pavement. Then switch the traffic to the first part of the new superstructure. After that, disassemble the existing superstructure. The dismantling of the superstructure takes place in several stages: first, disassemble the console, then cut and dismantle concrete slab, then dismantle separately for each beam. On the site of the dismantled of the superstructure set the unit of the main beam of the second part of the new superstructure, then install the next block and merge the blocks of the second part of the new superstructure, and then set the console orthotropic plate. Combine the first part of a new superstructure with the second part of the new superstructure with a reinforced concrete plate and equip pavement and fences.

The claimed invention is illustrated by drawings, where:

Fig. 1 shows the existing superstructure of the bridge (cross section).

Fig. 3 illustrates the existing superstructure of the bridge widened on the bolt installed under the bottom belt rollers and Jack (cross section).

Fig. 4 shows peradventure the existing superstructure of the bridge widened on the crossbar (cross section).

Fig. 5 shows peradventure the existing superstructure of the bridge widened on the bolt with the mounted unit of the main beam of a new superstructure (cross section).

Fig. 6 shows peradventure the existing superstructure of the bridge widened on the bolt installed and the joint blocks of the main beam of a new superstructure and installed them orthotropic plate (cross section).

Fig. 7 shows peradventure the existing superstructure of the bridge widened on the bolt installed and the joint blocks of the main beam of a new superstructure mounted on them orthotropic slab, pavement and guardrail, and the organized movement on the finished portion of the new span construction (cross section).

Fig. 8 shows a new superstructure of the bridge (cross section).

The proposed method lateral shifting of the superstructure of the bridge 1 on usire�tion bolt 2 is that:

Pre-userauth bolt 2 on two sides of the supports 3. Then reinforce the bottom belt 4 of the superstructure 1, lift it up and under the bottom belt 4 rollers set 5 (see Fig. 1, 2, 3).

Then install jacks jacks 6 and 6 move the existing superstructure 1 in the direction transversely of the supports 3 of the bridge. Then remove the rollers 5, install fences 7 and organize the movement of transport on 8 peredvinuli existing floating structure 1 (see Fig. 3, 4).

Then in the liberated part 9 of the supports 3 with extended beams 2, near peredvinuli existing spans 1 set unit 10 of the main beam of the first part 11 of the new superstructure 12, then establish the following block of 10 and combine the blocks 10 of the first part 11 of the new superstructure 12. Then install the console orthotropic plate 13 and equip the first part 11 of the new superstructure 12 pavement 14. Then switch the traffic 8 on the first part 11 of the new superstructure 12 (see. 5, 6, 7).

After that, disassemble the existing superstructure 1. The dismantling of the superstructure 1 is held in several stages: first, disassemble the console 15, and then cut and dismantle concrete slab 16, then dismantle separately each beam 1 (see Fig. 7, 8).

On the site of the dismantled of the superstructure 1 set unit 10 of the main beam of the second part 18 of the new superstructure 12, then establish the following block of 10 and combine the blocks 10 of the second part 18 of the new superstructure 12, and then install the console orthotropic plate 13. Combine the first part 11 of the new superstructure 12 with the second part 18 of the new superstructure reinforced concrete slab 12 19 and equip pavement 14 and fences 7 (see Fig. 8).

The essence of the claimed invention is that:

1. First userauth bolt 2.

2. Reinforce the bottom belt 4 of the superstructure 1 (zone jacking beams).

3. Lift the existing superstructure 1 and the lower belt 4 rollers set 5.

4. Install jacks 6 and move the existing superstructure 1.

5. Install fences 7 and organize the movement of transport 8.

6. In the liberated part 9 of the supports 3 with extended bolt set 2 alternately blocks of the main beam 10 of the first part 11 of the new superstructure 12 and combine the blocks 10 and install orthotropic plate 13 and road equip clothes 14.

7. Switch traffic 8 on the first part 11 of the new superstructure 12.

8. Disassemble the existing span� building 1: disassemble the console 15, cut and dismantle concrete slab 16, disassemble beams 17.

9. On the site of the dismantled of the superstructure 1 set alternately blocks 10 of the main beam of the second part 18 of the new superstructure 12 and combine the blocks 10 and install orthotropic plate 13 and road equip clothes 14.

10. Combine first 11 and second part 18 of the new superstructure 12, equip pavement 14.

In this way the reconstruction of the bridge proposed to abandon the rigging supports and dismantling of the transom and use a more efficient process of broadening crossbars supports (the Invention of the Russian Federation No. 2205914): and produce the elongation of the beams by increasing the consoles crossbars, where for the formation of additional cantilever elements carry out the drilling in the head portion of each of the existing supports in relation to its longitudinal axis, at least one through channel and blind holes in the head part and the body of the existing towers, and then secured in the through-channel aligned with them on one or both sides of each hollow support canadaontario, the protruding portion which is formed with a length corresponding to the length of the formed additional cantilever elements, followed by sealing in all the blind holes of the ends of the reinforcement bars, reinforcement bars then bind m�waiting for an additional armature cores in a single frame additional cantilever elements then to the hollow canadaontario mounted anchor device and produce the formation of additional cantilever elements by embedding in concrete in the formwork created frame with hollow kanaloobrazuyuschego devices and after appropriate exposure of the concrete in canadaontario through anchor device having high strength rebar, then carry her tension with subsequent injection through channel hardening material.

The use of this technology broadening beams significantly reduces the time, labor costs.

Diamond cutting, which proposed to use in this way, a fast, convenient and secure way. This method produced accurate cutting (drilling), even in remote places and at an angle, without external and internal damage with minimum expenditure of time, in the absence of vibrations, noise and dust. Natural rock or concrete, using the traditional methods of cutting destroyed fragile due to crack growth. Any impact force on the rock or concrete causes the appearance of stretch stress that generates and detects defects, and ultimately may lead to the nucleation of cracks and further destruction of rock or concrete.

The proposed rational technological method for cutting (drilling) Almaz�mi discs (drills etc.) cutting diamond wire ensures the preservation of the strength of the array, improving performance with minimum power consumption and safety of operations.

Install battery jacks for lateral shifting of the superstructure as possible, which will be moving, and with the other hand.

This allows you to choose a more convenient place to install the jacks and not to make additional extensions or adaptations.

The dismantling of the superstructure also be produced with the use of diamond cutting that significantly improve the productivity and safety of operations with minimum energy consumption.

All the above testifies to the solution of the problem, namely the reconstruction of the superstructure with minimal complexity of operations in the shortest possible time and ensuring the possibility of operation of the bridge during the reconstruction.

Industrial applicability is that the implementation of the proposed method using known equipment used in various fields and does not require additional fabrication and refinement.

List of entries:

1. The existing superstructure

2. The widened beams

3. Support

4. The bottom chord of the existing span�about structure

5. Rollers

6. Jacks

7. Fencing

8. Transport

9. Exempt portion supports

10. Block

11. The first part of the new superstructure

12. New superstructure

13. Orthotropic plate

14. Road apparel

15. The console

16. Concrete slabs

17. Beams

18. The second part of the new superstructure

19. Concrete slab of the new superstructure

1. Method lateral shifting of the superstructure of the bridge on the widened beams, including: the lifting of the superstructure, lowering the superstructure, installation of jacks and the relocation of the superstructure,
characterized in that
pre-userauth bolt on two sides of the supports, then reinforce the bottom chord of the superstructure, and then under the bottom chord of the superstructure rollers set, then the jacks move the existing superstructure in the direction transversely of the supports of the bridge, then remove rollers and organize the movement of transport on peredvinuli existing floating structure, then in the liberated part of the bearings with extended bolt, near peredvinuli existing set spans the block of the main beam of the first part of the new superstructure, then set sleduushego and combine the blocks of the first part of the new superstructure, then install the console orthotropic plate and equip the first part of the new superstructure pavement, then switch the traffic to the first part of the new superstructure, then dismantle the existing bridge superstructure, then removed the superstructure set the unit of the main beam of the second part of the new superstructure, then install the next block and merge the blocks of the second part of the new superstructure, and then set the console orthotropic plate and combine the first part of a new superstructure with the second part of the new superstructure with a reinforced concrete plate and equip pavement and fences.

2. Method lateral shifting of the superstructure of the bridge widened on the bolt according to claim 1, characterized in that the dismantling of the superstructure takes place in several stages: first, disassemble the console, then cut and dismantle concrete slab, then dismantle separately for each beam.

 

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