CN108221719B - Sliding basket type bridge overhauling system and installation method thereof - Google Patents
Sliding basket type bridge overhauling system and installation method thereof Download PDFInfo
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- CN108221719B CN108221719B CN201810211669.3A CN201810211669A CN108221719B CN 108221719 B CN108221719 B CN 108221719B CN 201810211669 A CN201810211669 A CN 201810211669A CN 108221719 B CN108221719 B CN 108221719B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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Abstract
The invention relates to a sliding basket type bridge overhauling system and an installation method thereof, wherein the sliding basket type bridge overhauling system comprises a rope assembly, a counterweight assembly, a truss assembly and a sliding basket assembly; the rope assembly comprises a fixed rope and a supporting rod; the counterweight assembly comprises a counterweight frame, a cantilever beam and a counterweight; the truss assembly comprises truss girders and supporting beams; the sliding basket assembly comprises a hanging basket and a travelling rope; the fixed rope one end is fixed in the bridge floor through the mounting, and the bracing piece top of bypassing is connected to the top of truss roof beam to the other end, and bracing piece bottom mounting is on the counter weight frame, and the counter weight frame is connected to cantilever beam one end, and the truss roof beam is connected to the other end, and the hanging flower basket can be slided and be connected to the walking rope on, and the steering wheel that sets up on the truss roof beam is walked around respectively at walking rope both ends is connected to the bridge body both sides on the counter weight frame, and a supporting beam end sets up on the truss roof beam, and the other end supports the bridge body facade. The novel structural design is adopted, so that the counterweight is reduced while the structural strength is met, and the structure is safer and more reasonable.
Description
Technical Field
The invention relates to the field of bridge maintenance, in particular to a sliding basket type bridge maintenance system and an installation method thereof.
Background
Bridge overhauls is to use bridge of one end time to maintain and safeguard, prolongs its life. The repairing method generally comprises the steps of repairing an upper structure and repairing a lower structure, wherein the upper structure mainly comprises the steps of locally repairing the damaged parts of an I-beam, a pipe box and a T-beam, chiseling concrete at the damaged parts, and repairing the damaged parts by using epoxy mortar; the maintenance of the lower structure mainly comprises the steps of carrying out local repair treatment on the damaged part of the lower structure, chiseling concrete at the damaged part, and repairing with epoxy mortar; treating the outer surfaces of concrete of the capping beam and the bridge abutment, and brushing a concrete anti-corrosion coating; polishing the exposed surface of the pier steel plate, and brushing the steel structure for anti-corrosion coating. When maintaining the substructure, the construction is mainly performed on the side and bottom surfaces of the bridge, and it is necessary to perform the construction with the aid of other tools.
The existing bridge maintenance scheme mainly comprises a scaffold operation platform, bridge inspection vehicle construction and the like, wherein the cofferdam flow guide is not suitable for construction of bridges on rivers with large flow, the bridge inspection vehicle construction requires large space when the bridge inspection vehicle is opened, particularly the space above the bridge to be maintained and the space at two sides, and when other buildings or bridges are arranged at two sides of the bridge to be maintained or an overpass is arranged at the upper part of the bridge to be maintained, the bridge inspection vehicle cannot be unfolded.
It should be understood that there are some simple bridge inspection devices, such as chinese patents CN201710361161.7, CN201120199145.0, CN201520965198.7, CN201521133090.8, which all balance the pulling force from the bridge floor by providing a counterweight on the bridge floor, and in this way, the counterweight needs to be heavy to balance the pulling force, which has a safety hazard.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a sliding basket type bridge overhauling system and an installation method thereof, which adopt a new structural design, reduce the counterweight while meeting the structural strength, have safer and more reasonable structure, and can maintain the whole bridge.
The technical scheme adopted for solving the technical problems is as follows: the system comprises a rope assembly, a counterweight assembly, a truss assembly and a slide basket assembly; the rope assembly comprises a fixed rope and a supporting rod; the counterweight assembly comprises a counterweight frame, a cantilever beam and a counterweight; the truss assembly comprises a truss girder and a supporting beam; the sliding basket assembly comprises a hanging basket and a traveling rope; the bridge deck is fixed in through the mounting to fixed rope one end, and the other end is walked around the bracing piece top is connected to the top of truss roof beam, the bracing piece bottom is fixed to on the counter weight frame, the outrigger one end is connected the counter weight frame, the other end is connected the truss roof beam, the hanging flower basket can be slided and be connected to on the walking rope, the walking rope both ends are walked around respectively the steering wheel that sets up on the truss roof beam is connected to on the counter weight frame of the bridge both sides, a supporting beam end sets up on the truss roof beam, the other end supports the bridge facade.
The invention solves the technical problems that the further technical proposal is as follows: the fixing piece is an earth anchor, the diameter of the earth anchor is larger than 14mm, and the anchoring depth is larger than 260mm.
The invention solves the technical problems that the further technical proposal is as follows: the system comprises four traveling ropes, a safety rope and a safety belt, wherein the four traveling ropes are used for hanging a hanging basket, and the safety rope is connected with a safety belt of a constructor.
The invention solves the technical problems that the further technical proposal is as follows: the balance weight frame is provided with travelling wheels, and the bridge deck is provided with ground rails matched with the travelling wheels.
The invention solves the technical problems that the further technical proposal is as follows: the counterweight frame is provided with a rope collector, and two ends of the travelling rope are respectively connected to the rope collector.
The invention solves the technical problems that the further technical proposal is as follows: the hanging basket is provided with four groups of pulley blocks, two groups of pulley blocks are arranged on the top surface of the hanging basket, two groups of pulley blocks are arranged on the bottom surface of the hanging basket, and one group of pulley blocks is used for being connected with one travelling rope.
The invention solves the technical problems that the further technical proposal is as follows: the support beams corresponding to each truss girder are provided with two groups.
The invention solves the technical problems that the further technical proposal is as follows: and a ladder stand is arranged in the truss girder.
The invention solves the technical problems that the further technical proposal is as follows: four pairs of steering wheels are arranged on each truss girder, and each travelling rope corresponds to one group of steering wheels.
The installation method of the sliding basket type bridge overhaul system comprises the following steps:
s1, installing a counterweight assembly, paving a ground rail on a bridge deck, arranging a counterweight frame in the ground rail, and connecting a cantilever beam to the counterweight frame;
s2, installing a rope assembly, installing a supporting rod on a counterweight frame, then fixing a fixing piece on a bridge deck, connecting one end of a fixed rope to the fixing piece, and bypassing the top end of the supporting rod at the other end;
s3, installing a truss assembly, namely installing the installed truss girder to a cantilever girder through hoisting equipment, and then installing a support beam between the truss girder and a bridge body;
s4, connecting the free end of the fixed rope to the upper end of the truss girder;
s5, installing a sliding basket assembly, namely connecting one end of a travelling rope to a counterweight frame on one side of a bridge body, then placing the travelling rope under the bridge by bypassing a guide wheel on a truss beam, connecting a guide rope at the free end of the travelling rope, installing the connecting guide rope on a pulley of a hanging basket, completing the installation of the hanging basket on the travelling rope, finally connecting the free end of the travelling rope to a cantilever beam on the other side of the bridge body through the guide rope, and tensioning the travelling rope through a tensioner;
s6, installing a safety rope, and connecting the safety rope to a fixed object on the bridge body;
s7, running and checking the hanging basket, arranging an object larger than 200KG in the hanging basket, sliding the hanging basket to the midspan, stacking the load for more than hours, measuring the deflection of the travelling rope and the sliding distance of the fixed rope, and judging whether the hanging basket is stable or not.
By adopting the technical scheme, the invention has the following beneficial effects:
the rope assembly is used for providing tension for the rope assembly main through only providing tension by the counterweight assembly, the counterweight assembly is only used for assisting functions, the counterweight assembly is used for providing tension by contacting the bridge deck, the rope assembly is used for providing tension by fixing and the bridge deck, meanwhile, the rope assembly can also act on the counterweight assembly, the contact force of the counterweight assembly and the bridge deck is increased, and the counterweight assembly and the bridge deck supplement each other, so that the construction safety is ensured. In addition, the bridge bottom can be maintained through the sliding basket assembly, and the bridge side can be maintained through the truss assembly, so that the omnibearing maintenance of the bridge is realized.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a construction of the present invention;
FIG. 2 is a schematic illustration of a construction of a counterweight assembly;
specific reference numerals in the drawings are as follows:
1. a rope assembly; 11. fixing the rope; 12. a support rod; 13. a fixing member; 2. a counterweight assembly; 21. a counterweight frame; 22. cantilever beam; 23. a counterweight; 24. a walking wheel; 25. a tensioner; 3. a truss assembly; 31. truss girder; 311. a vertical rod; 312. a cross bar; 313. a diagonal rod; 32. a support beam; 33. a guide wheel; 4. a slide basket assembly; 41. a walking rope; 42. a hanging basket; 421. pulley block.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
A sliding basket type bridge overhaul system, referring to fig. 1, the system comprises a rope assembly 1, a counterweight assembly 2, a truss assembly 3 and a sliding basket assembly 4; the rope assembly 1 comprises a fixed rope 11 and a support rod 12; the counterweight assembly 2 comprises a counterweight frame 21, a cantilever beam 22 and a counterweight 23; the truss assembly 3 comprises a truss girder 31 and a support beam 32; the basket assembly 4 comprises a basket 42 and a travelling rope 41; the bridge deck is fixed in to fixed rope 11 one end through mounting 13, and the other end is walked around bracing piece 12 top is connected to the top of truss girder 31, the bracing piece 12 bottom is fixed to on the counter weight frame 21, the outrigger 22 one end is connected counter weight frame 21, the other end is connected truss girder 31, hanging flower basket 42 can be slided and be connected to on the walking rope 41, walking rope 41 both ends are walked around respectively the steering wheel that sets up on the truss girder 31 is connected to on the counter weight frame 21 of the bridge body both sides, supporting beam 32 one end sets up on the truss girder 31, the other end supports the bridge body facade.
The mode that only provides the pulling force through the counter weight subassembly 2 through rope subassembly 1 changes to rope subassembly 1 owner and provides the pulling force, and counter weight subassembly 2 is only used for auxiliary function, and rope subassembly 1 is through being fixed in the bridge floor and provides the pulling force, and rope subassembly 1 can also act on counter weight subassembly 2 simultaneously, increases the contact force of counter weight subassembly 2 and bridge floor, and the two complements each other, has guaranteed the safety of construction and has gone on.
The rope assembly 1 comprises two fixed ropes and two supporting rods, wherein the fixed ropes are 18.5mm in diameter and 1700N/mm in strength limit 2 The sum of breaking forces of the steel wire ropes is not less than 219.0KN. The support rod is made of H-shaped steel. The cantilever beam is H-shaped steel with the height of 300mm, the flange width of 150mm, the web thickness of 6.5mm and the flange plate thickness of 9 mm.
Preferably, the fixing member 13 is an earth anchor, the fixing rope 11 is fixed on the bridge deck by the earth anchor, the diameter of the earth anchor is greater than 14mm, and the anchoring depth is greater than 260mm.
Preferably, the number of the traveling ropes 41 is four, wherein the four traveling ropes 41 are used for hanging the hanging basket 42, and the traveling ropes further comprise safety ropes which are used for connecting safety belts of constructors. The safety rope must not be connected with any structure of the hanging basket 42 for the operators to hang the safety belt, prevent the falling of the river course and ensure personal safety.
In order to facilitate the forward movement of the counterweight assembly 2 during construction, the counterweight housing 21 is preferably provided with a traveling wheel 24.
Preferably, the deck is provided with ground rails matching said road wheels 24. The ground rail is arranged on the first track for limiting the movement of the counterweight assembly 2, and the rail can also limit the counterweight assembly 2 from moving left and right when the mating assembly is fixed.
Preferably, the counterweight frame 21 is provided with a rope collector, and both ends of the travelling rope 41 are respectively connected to the rope collector. The rope retractor is provided to facilitate tensioning of the travelling rope 41.
As a preferable solution, four groups of pulley blocks 421 are disposed on the basket 42, two groups of pulley blocks 421 are disposed on the top surface of the basket 42, two groups of pulley blocks 421 are disposed on the bottom surface of the basket 42, and one group of pulley blocks 421 is used for connecting with one travelling rope 41.
Preferably, there are two groups of the support beams 32 corresponding to each truss girder 31. The supporting beams 32 serve as supporting points of the truss beams 31, if only one supporting beam 32 is used, the pressure on the side face of the bridge body is high, the shearing force on the truss beams 31 is high, and a certain distance is needed between the two groups of supporting beams 32. The truss girder comprises four vertical rods 311, a cross rod 312 and inclined rods 313, wherein the cross rod 312 is used for forming a cuboid frame structure by the four vertical rods 311, and the inclined rods 313 are arranged on two vertical surfaces of the cuboid frame, which are perpendicular to the bridge body, so that the shearing strength of the truss girder is improved. As a preferable scheme, the vertical rod 311 is a steel pipe with the length of 4.8m, the diameter of 70mm and the wall thickness of 3.5mm, and the cross section area of 5.740cm 2 The cross rod and the diagonal rod are steel pipes with diameters of 50mm and wall thicknesses of 3.5mm, and the cross section area is 4.014cm 2 。
In order to facilitate the worker's access from the deck to the basket 42, a ladder stand is preferably provided in the truss girder 31. The ladder stand may be a ladder stand separately provided in the truss girder 31, or may be formed for the unique structure itself of the truss girder 31.
Preferably, four pairs of steering wheels are provided on each truss girder 31, and each travelling rope 41 corresponds to one group of steering wheels.
The installation method of the sliding basket type bridge overhaul system comprises the following steps:
s1, installing a counterweight assembly 2, paving a ground rail on a bridge floor, arranging a counterweight frame 21 in the ground rail, and connecting a cantilever beam 22 to the counterweight frame 21;
s2, installing the rope assembly 1, installing the supporting rod 12 on the counterweight frame 21, then fixing the fixing piece 13 on the bridge deck, connecting one end of the fixing rope 11 to the fixing piece 13, and bypassing the top end of the supporting rod 12 at the other end;
s3, installing the truss assembly 3, namely installing the installed truss girder 31 to the cantilever beam 22 through hoisting equipment, and then installing a supporting beam 32 between the truss girder 31 and a bridge body;
s4, connecting the free end of the fixed rope 11 to the upper end of the truss girder 31;
s5, installing the basket assembly 4, connecting one end of a travelling rope 41 to a counterweight frame 21 on one side of a bridge body, then putting the travelling rope under the bridge by bypassing a guide wheel 33 on a truss girder 31, connecting a guide rope at the free end of the travelling rope 41, installing the connecting guide rope on a pulley of a hanging basket 42, completing the installation of the hanging basket 42 on the travelling rope 41, finally connecting the free end of the travelling rope 41 to a cantilever beam 22 on the other side of the bridge body through the guide rope, and tensioning the travelling rope 41 through a tensioner 25;
s6, installing a safety rope, and connecting the safety rope to a fixed object on the bridge body;
s7, running and checking the hanging basket 42, arranging an object larger than 200KG in the hanging basket 42, sliding the hanging basket 42 to the midspan, stacking the load for more than 24 hours, measuring the deflection of the travelling rope 41 and the sliding distance of the fixed rope 11, and judging whether the hanging basket is stable or not.
Through the above installation steps, the system is ensured to be firmly installed, and the safety of the construction of the hanging basket 42 is improved.
During the use, can carry out maintenance construction under the bridge body through the hanging flower basket, can carry out maintenance construction to the bridge side through the truss subassembly, compare in current design, can realize the maintenance to the bridge body all-round.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. The installation method of the sliding basket type bridge maintenance system is characterized in that the sliding basket type bridge maintenance system comprises a rope assembly, a counterweight assembly, a truss assembly and a sliding basket assembly; the rope assembly comprises a fixed rope and a supporting rod; the counterweight assembly comprises a counterweight frame, a cantilever beam and a counterweight; the truss assembly comprises a truss girder and a supporting beam; the sliding basket assembly comprises a hanging basket and a traveling rope; one end of the fixed rope is fixed on the bridge deck through a fixing piece, the other end of the fixed rope bypasses the top end of the supporting rod and is connected to the top end of the truss girder, the bottom end of the supporting rod is fixed on the counterweight frame, one end of the cantilever girder is connected with the counterweight frame, the other end of the cantilever girder is connected with the truss girder, the hanging basket can be connected onto the travelling rope in a sliding mode, the two ends of the travelling rope respectively bypass steering wheels arranged on the truss girder and are connected onto the counterweight frames on the two sides of the bridge body, one end of the supporting beam is arranged on the truss girder, the other end of the supporting beam abuts against the elevation of the bridge body, the fixing piece is a ground anchor, the diameter of the ground anchor is larger than 14mm, the anchoring depth is larger than 260mm, the travelling rope is four in total, the four travelling ropes are used for hanging the hanging basket, the safety rope is used for connecting safety belts of constructors, the falling river channels are prevented, and the personal safety is ensured; the rope component comprises two fixed ropes and two supporting rods, wherein the fixed ropes are 18.5mm in diameter and 1700N/mm in strength limit 2 The sum of breaking force of the steel wire rope is not less than 219.0KN; the support rod is made of H-shaped steel; the cantilever beam is H-shaped steel with the height of 300mm, the flange width of 150mm, the web thickness of 6.5mm and the flange plate thickness of 9 mm;the balance weight frame is provided with travelling wheels, a bridge deck is provided with ground rails matched with the travelling wheels, the balance weight frame is provided with rope collecting devices, two ends of each travelling rope are respectively connected to the corresponding rope collecting devices, the hanging basket is provided with four groups of pulley blocks, two groups of pulley blocks are arranged on the top surface of the hanging basket, two groups of pulley blocks are arranged on the bottom surface of the hanging basket, one group of pulley blocks is used for connecting one travelling rope, two groups of supporting beams corresponding to each truss girder are arranged, and the supporting beams are used as fulcrums of the truss girders; still need set up certain distance between two sets of supporting beams, the truss roof beam includes four pole setting, horizontal pole and diagonal bar, and a plurality of the horizontal pole constitutes cuboid frame construction with four pole setting, the diagonal bar sets up on two facades of this cuboid frame perpendicular to the bridge body, has improved the shear strength of truss roof beam, the pole setting selects for use length to be 4.8m, and the diameter is 70mm, and the wall thickness is 3.5 mm's steel pipe, and the cross-sectional area is 5.740cm 2 The cross rod and the diagonal rod are steel pipes with diameters of 50mm and wall thicknesses of 3.5mm, and the cross section area is 4.014cm 2 ；
Wherein the installation method comprises the following steps:
s1, installing a counterweight assembly, paving a ground rail on a bridge deck, arranging a counterweight frame in the ground rail, and connecting a cantilever beam to the counterweight frame;
s2, installing a rope assembly, installing a supporting rod on a counterweight frame, then fixing a fixing piece on a bridge deck, connecting one end of a fixed rope to the fixing piece, and bypassing the top end of the supporting rod at the other end;
s3, installing a truss assembly, namely installing the installed truss girder to a cantilever girder through hoisting equipment, and then installing a support beam between the truss girder and a bridge body;
s4, connecting the free end of the fixed rope to the upper end of the truss girder;
s5, installing a sliding basket assembly, namely connecting one end of a travelling rope to a counterweight frame on one side of a bridge body, then placing the travelling rope under the bridge by bypassing a guide wheel on a truss beam, connecting a guide rope at the free end of the travelling rope, installing the connecting guide rope on a pulley of a hanging basket, completing the installation of the hanging basket on the travelling rope, finally connecting the free end of the travelling rope to a cantilever beam on the other side of the bridge body through the guide rope, and tensioning the travelling rope through a tensioner;
s6, installing a safety rope, and connecting the safety rope to a fixed object on the bridge body;
s7, running and checking the hanging basket, arranging an object larger than 200KG in the hanging basket, sliding the hanging basket to the midspan, stacking the load for more than hours, measuring the deflection of the travelling rope and the sliding distance of the fixed rope, and judging whether the hanging basket is stable or not.
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| CN201810211669.3A CN108221719B (en) | 2018-03-14 | 2018-03-14 | Sliding basket type bridge overhauling system and installation method thereof |
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| CN201810211669.3A CN108221719B (en) | 2018-03-14 | 2018-03-14 | Sliding basket type bridge overhauling system and installation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108951415A (en) * | 2018-08-21 | 2018-12-07 | 华东建工集团有限公司 | A kind of basket-hanging bridge maintaining platform |
| CN112144393A (en) * | 2020-10-23 | 2020-12-29 | 新疆北新路桥集团股份有限公司 | Installation and construction method for water collecting pipe under bridge |
| CN113089477A (en) * | 2021-04-06 | 2021-07-09 | 四川川交路桥有限责任公司 | Hanging basket suspension system |
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| CN108221719A (en) | 2018-06-29 |
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