CN114673093B - Temporary fixing device and method for hoisting construction rear end of reinforced concrete combined section - Google Patents
Temporary fixing device and method for hoisting construction rear end of reinforced concrete combined section Download PDFInfo
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- CN114673093B CN114673093B CN202210320047.0A CN202210320047A CN114673093B CN 114673093 B CN114673093 B CN 114673093B CN 202210320047 A CN202210320047 A CN 202210320047A CN 114673093 B CN114673093 B CN 114673093B
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- 238000010276 construction Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000011150 reinforced concrete Substances 0.000 title claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 120
- 239000010959 steel Substances 0.000 claims abstract description 120
- 239000004567 concrete Substances 0.000 claims abstract description 78
- 238000004873 anchoring Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007667 floating Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a device and a method for temporarily fixing the hoisting construction rear end of a steel-concrete combined section, which solve the problem of poor positioning stability of the steel-concrete combined section in the prior art and have the beneficial effect of ensuring the stability of the steel-concrete combined section in the fine adjustment process, and the concrete scheme is as follows: the utility model provides a steel-concrete combines section hoist and mount construction rear end temporary fixation device, including the bearing unit, the bearing unit passes through the concrete girder to be supported, one side of bearing unit links firmly with the concrete girder through the anchor unit, the opposite side is hung in hoist and mount steel case roof beam top in place, first suspender unit supports in the cantilever side of bearing unit and is connected with hoist and mount steel case roof beam in place, hoist and mount steel case roof beam in place and hang the basket and be connected through the second suspender unit, set for the distance along the interval between first suspender unit of length direction of concrete girder and the second suspender unit, adjust the elevation of steel case roof beam through first suspender unit and second suspender unit.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a temporary fixing device and method for a rear end of steel-concrete combined section hoisting construction.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The steel-concrete mixed beam is a structural form of a composite structural bridge, and is a structural system of steel beams and concrete beams which are connected into an integral beam at a proper longitudinal position by utilizing joint structures. In modern large-span cable-stayed bridges, suspension bridges, continuous beams and continuous rigid frame upper structure designs, in order to lighten the structural dead weight and increase the crossing capacity, main beams are in a steel-concrete mixed beam form so as to increase the integral rigidity of the structure and reasonably balance the dead weight and the integral internal force of each span, and steel-concrete combined sections are arranged between the steel beams and the concrete main beams, so that the steel and the concrete form a whole for cooperative work, and smooth transmission of the internal force is ensured.
Because the structure of the steel-concrete mixed beam steel-concrete mixed section with large span is complex, how to ensure accurate positioning in the hoisting process of the steel box beam and how to carry out temporary fixation before concrete pouring is the key point and the difficulty of the construction of the steel-concrete mixed beam steel-concrete mixed section with large span.
At present, the hoisting construction of the steel-concrete combined section is carried out by adopting a floating crane, a bridge deck crane or a hanging basket, and the inventor finds that after the steel-concrete combined section is hoisted to the cantilever side elevation of the concrete girder to be in place, the space posture of the steel-concrete combined section needs to be adjusted before final fixing so as to ensure that the steel-concrete combined section is positioned accurately and the designed pre-camber elevation is achieved, but the process takes longer due to the poor stability of the existing hoisting equipment, and the construction period is seriously delayed.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a temporary fixing device for the hoisting construction rear end of a steel-concrete combined section, which effectively ensures the stability of the steel-concrete combined section in the fine adjustment process.
In order to achieve the above object, the present invention is realized by the following technical scheme:
the utility model provides a steel-concrete combines section hoist and mount construction rear end temporary fixation device, including the bearing unit, the bearing unit passes through the concrete girder to be supported, one side of bearing unit links firmly with the concrete girder through the anchor unit, the opposite side is hung in hoist and mount steel case roof beam top in place, first suspender unit supports in the cantilever side of bearing unit and is connected with hoist and mount steel case roof beam in place, hoist and mount steel case roof beam in place and hang the basket and be connected through the second suspender unit, set for the distance along the interval between first suspender unit of length direction of concrete girder and the second suspender unit, adjust the elevation of steel case roof beam through first suspender unit and second suspender unit.
The device is characterized in that a first hanging strip unit is arranged on one side of the steel box girder which is hoisted in place, the first hanging strip unit is reliably connected with the concrete main girder through a bearing unit, the other side of the steel box girder is stably connected through the existing hanging basket, and the height of the steel box girder is adjusted through the first hanging strip unit and the second hanging strip unit, so that the stability of the whole structure is high.
The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section comprises the first hanging strip, one end of the first hanging strip is connected with a steel box girder in place in a hoisting mode, the first hanging strip is arranged on the side portion of the cantilever side of the bearing unit and sequentially penetrates through the first girder and the second girder, a jack is arranged between the first girder and the second girder, and the second girder is fixedly connected with the first hanging strip.
The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section is characterized in that the first beam is perpendicular to the bearing unit, and the length of the first beam is larger than the width of the bearing unit;
the length direction of the bearing unit is along the length direction of the concrete girder.
The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section comprises a plurality of first hanging strips, a jack and a second beam, wherein the second beam is effectively supported by the jack, and the height of one side of the steel box beam is correspondingly adjusted by the first hanging strips after the height of the second beam is raised or lowered by the jack;
the length direction of the second beam is perpendicular to the length direction of the first beam;
the second beam is a shoulder pole beam, and the jacks are arranged on two sides of the length direction of the shoulder pole beam, so that the stress is more uniform, and the accurate adjustment of the elevation of one side of the steel box beam is ensured.
The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section comprises a second hanging strip, wherein one end of the second hanging strip is connected with a steel box girder which is hoisted in place, the second hanging strip sequentially penetrates through a hanging basket, a first girder, a jack and a second girder, and the second girder is fixedly connected with the second hanging strip;
similarly, the first sling unit and the second sling unit have the same structure, and the second sling is driven by the second beam in the second sling unit to adjust the height of one side of the steel box girder.
According to the temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section, the stress balance is considered, the accurate adjustment effect is guaranteed, the bearing unit comprises at least two third beams, and the third beams are located at the joint positions of the wing plates and the main plate of the steel box beam which are hoisted in place.
According to the temporary fixing device for the hoisting construction rear end of the steel-concrete combined section, the anchoring unit comprises the embedded part, one end of the embedded part is embedded in the concrete main beam, the embedded part sequentially penetrates through the bearing unit and the fourth beam and then is fixed through the locking part, and the embedded part is embedded in advance before the casting of the steel box girder of the previous section.
According to the temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section, the bearing units are arranged on the bridge deck above the web plate of the concrete girder through the cushion blocks, and the bearing units are effectively supported through the cushion blocks;
the cushion block is perpendicular to the bearing unit, and the length of the cushion block is greater than the width of the bearing unit, so that the anchoring force is uniformly distributed on the bearing unit.
The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section is characterized in that the fourth beam is perpendicular to the bearing unit, and the length of the fourth beam is greater than the width of the bearing unit.
In a second aspect, the invention also provides a temporary fixing method for the hoisting construction rear end of the reinforced concrete combined section, which comprises the following steps:
supporting a bearing unit through the concrete main beam which is constructed, wherein the bearing unit is connected with the concrete main beam;
after the steel box girder is initially hoisted in place, the section of steel box girder and the bearing unit are connected with the first suspender unit;
the hanging basket is connected with the steel box girder which is hoisted in place through the second hanging belt unit;
loosening a lifting hook of the steel box girder, and transferring bearing capacity to the hanging basket and the concrete girder;
and adjusting the elevation of the steel box girder through the first hanging strip unit and the second hanging strip unit.
The beneficial effects of the invention are as follows:
1) According to the invention, through the arrangement of the integral structure, the first hanging strip unit is arranged on one side of the steel box girder which is being hoisted in place, the first hanging strip unit is reliably connected with the concrete girder through the bearing unit, the other side of the steel box girder is stably connected through the existing hanging basket, the second hanging strip unit is supported by the hanging basket, the height of the steel box girder is adjusted through the first hanging strip unit and the second hanging strip unit, the stability of the integral structure is high, the stability of the steel box girder in the fine adjustment process in the steel-concrete combination section is effectively ensured, the construction is ensured to be carried out quickly, and the overlong construction period is avoided.
2) According to the invention, the hanging basket is matched with the bearing unit, so that the hanging basket and the bearing unit can be in air relay with a hoisting mechanism of the steel box girder, particularly a floating crane mechanism, and floating crane is not needed in the process of fine adjustment and fixing of the posture of the steel-concrete combined section, so that the sealing time of a floating crane water transportation channel is reduced.
3) The invention utilizes the characteristic that the steel box girder has lifting lugs, the lifting lugs can be reliably connected with the first hanging strip and the second hanging strip, and then the lifting lugs are dispersed to the jacks at two sides and the first girder by the second girder, the stress of the first girder is uniformly transferred to the bearing unit, the bearing unit is anchored and is stressed to the concrete girder, and the stress is simple and clear.
4) The invention has the advantages that through the arrangement of the integral structure, the material of the integral structure is simple, the consumption is low, and a great amount of cost is saved for engineering; the whole device is convenient to operate and assemble, greatly improves the construction efficiency, saves the construction time and has good engineering economy.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is a side view of a steel reinforced concrete joint section hoisting construction back end temporary fixture according to one or more embodiments of the present invention.
Fig. 2 is an elevation view of a first strap unit in a steel reinforced concrete joint section hoisting back end temporary fixation device according to one or more embodiments of the present invention.
In the figure: the mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustration is only schematic.
Wherein: the steel box girder comprises a 1-steel longitudinal beam, a 2-first hanging strip, a 3-first beam, a 4-second beam, a 5-jack, 6-screw steel, a 7-fourth beam, 8-nuts, 9-cushion blocks, 10-hanging baskets, 11-second hanging strips, a 12-concrete main beam and 13-steel box girders.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular forms also are intended to include the plural forms unless the present invention clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
as described in the background art, the problem that the steel-concrete combined section is unstable in the fine adjustment process exists in the prior art, and in order to solve the technical problem, the invention provides a temporary fixing device for the hoisting construction rear end of the steel-concrete combined section.
Example 1
In a typical embodiment of the present invention, referring to fig. 1, a temporary fixing device for the rear end of a steel-concrete combined section hoisting construction comprises a bearing unit, wherein the bearing unit is supported by a concrete main beam 12, one side of the bearing unit is fixedly connected with the concrete main beam 12 through an anchoring unit, the other side of the bearing unit is suspended above a steel box girder 13 which is hoisted in place, a first sling unit is supported on the cantilever side of the bearing unit and is connected with the steel box girder 13 which is hoisted in place, the hoisted steel box girder is connected with a hanging basket 10 through a second sling unit, a distance is set between the first sling unit and the second sling unit along the length direction of the concrete main beam, and the elevation of the steel box girder 13 is adjusted through the first sling unit and the second sling unit.
The steel box girder which is lifted in place refers to a steel box girder which is primarily lifted in place and is not precisely adjusted.
In consideration of balanced stress, the accurate adjustment effect is ensured, the bearing unit comprises at least two third beams, the third beams are positioned at the joint positions of the wing plates and the main plate of the steel box beam which are hoisted in place, namely, the third beams are arranged on two sides of the steel box beam along the width direction of the concrete main beam, and a set distance is arranged between the two third beams.
It is understood that the third beam is a steel longitudinal beam 1, and is formed by welding a plurality of e.g. 4 55a i-beams side by side, the longitudinal length of the steel longitudinal beam 1 is about 3m, and the steel longitudinal beam 1 is provided with stiffening plates at the anchoring positions of the anchoring units, so that the local rigidity is increased.
The first sling unit comprises a first sling 2, one end of the first sling 2 is connected with a steel box girder 13 which is hoisted in place, the first sling is fixed on the side part of the bearing unit and sequentially penetrates through a first girder 3 and a second girder 4, the first girder 3 supports a jack 5, the jack is arranged between the first girder and the second girder, and the second girder 4 is fixedly connected with the first sling 2.
The first beam 3 is arranged vertically to the steel longitudinal beam 1, the length of the first beam 3 is longer than the width of the steel longitudinal beam 1, and the purpose is to uniformly distribute the sling force on the steel longitudinal beam 1; the length direction of the bearing units is along the length direction of the concrete main beam 12; specifically, the first beam 3 is a first cross beam, and the first beam 3 is formed by welding a plurality of 55a type I-steel strips side by side.
The first beam 3 is provided with a plurality of first hanging strips 2, a jack 5 and a second beam 4, in this embodiment, the jack 5 and the second beam 4 are arranged on two sides of the upper surface of the first beam 3, the second beam 4 is effectively supported by the jack 5, and after the height of the second beam 4 is raised or lowered by the jack 5, the height of one side of the steel box beam 13 is correspondingly adjusted by the first hanging strips 2;
the length direction of the second beam 4 is perpendicular to the length direction of the first beam 3;
the second beam 4 is a shoulder pole beam, the jacks 5 are arranged on two sides of the length direction of the shoulder pole beam, four jacks are supported on the upper surface of the first beam 3, so that the stress is more uniform, and the accurate adjustment of the elevation of one side of the steel box beam 13 is also ensured.
It should be noted that, the shoulder pole beam 4 adopts double-spliced 40a type I-steel, the shoulder pole beam 4 is arranged at the upper end of the jack 5, and the first suspender 2 passes through the middle of the shoulder pole beam 4.
Specifically, the first suspender 2 is connected with one lifting lug (rear lifting lug) of the steel box girder 13, the first suspender 2 is a 25×180 steel belt, the first suspender 2 is vertically arranged at two sides of the cantilever side (one end above the steel box girder) of the steel longitudinal girder 1 of the bearing unit, that is, each steel longitudinal girder 1 is provided with two first suspenders 2, and in other examples, more first suspenders 2 may be further arranged.
In addition, the second sling unit comprises a second sling 11, one end of the second sling 11 is connected with a steel box girder 13 which is hoisted in place, the second sling 11 sequentially penetrates through the hanging basket 10, the first girder, the jack and the second girder, and the second girder is fixedly connected with the second sling;
likewise, the first strap unit and the second strap unit are identical in structure (except for the length of the first strap and the second strap), and the second strap is driven by the second beam in the second strap unit to adjust the height of one side of the steel box girder.
In this embodiment, the second sling 11 is longer than the first sling 2, and the second sling is connected with the front lifting lug of the steel box girder in a temporary fixing manner by adopting a steel belt in a mode that the second sling is in front and the first sling is in back.
It is understood that the surface of the steel box girder is provided with a plurality of temporary fixed lifting lugs, and the setting positions of the lifting lugs correspond to the mounting positions of the first hanging strip and the second hanging strip.
In addition, a plurality of openings are formed in the length directions of the first hanging strip and the second hanging strip, the pin shafts are inserted into the first hanging strip or the second hanging strip through the openings, and the first hanging strip or the second hanging strip is connected with the corresponding second beam through the pin shafts.
The anchoring unit comprises an embedded part with one end embedded in the concrete main beam 12, the embedded part sequentially penetrates through the bearing unit and the fourth beam 7 and then is fixed through a locking part, and the embedded part is embedded in advance before the last section of the concrete main beam is poured; the locking member is specifically a nut.
Specifically, the embedded part adopts a plurality of screw steels 6, each steel longitudinal beam 1 is matched with a plurality of screw steels like 3 screw steels, the screw steels are longitudinally distributed on the rear side of the steel longitudinal beam 1 (one side far away from the second hanging strip is the rear, the other side is the front), the screw steels penetrate through a fourth beam 7, the bottom of the screw steels is pre-embedded into a concrete main beam to set depth like 1 meter depth, the upper parts of the screw steels are exposed out of the fourth beam 7, and the screw steels play a role of rear anchoring after being anchored by nuts 8.
In this embodiment, the fourth beam 7 is formed by welding 4 30a type i-steel beams side by side, and the length of the fourth beam is greater than the width of the steel longitudinal beam 1, is located at the rear side of the steel longitudinal beam 1 and is perpendicular to the steel longitudinal beam 1, so as to uniformly distribute the anchoring force on the steel longitudinal beam 1.
The bearing unit is arranged on the bridge deck above the web plate of the concrete girder through the cushion blocks 9, and the bearing unit is effectively supported through the cushion blocks 9; the cushion blocks 9 are vertically arranged with the bearing units, and the length of the cushion blocks 9 is larger than the width of the bearing units.
Specifically, cushion 9 is steel bolster, and every cushion adopts two 10a I-steel of piecing together, and the perpendicular placement is in steel longeron 1 bottom, and length is greater than steel longeron 1's width, arranges a plurality of such as 5 cushion altogether, and steel longeron 1 front end arranges 3, and the rear end arranges 2, and its purpose is that it is clear and definite to make steel longeron 1 bottom atress.
It will be appreciated that the hanging basket 10 is an existing hanging basket, and is supported at the concrete main beam where the construction is completed, and the hanging basket ensures the stable arrangement of the second hanging belt unit, i.e. the stability of the front side of the steel box girder and the stability of the front side of the steel box girder in the elevation adjustment process.
The device that this embodiment provided, overall structure is simple, set up first suspender unit to the one side of the steel case roof beam that is hoisting in place, first suspender unit passes through the bearing unit and is reliably connected with the concrete girder, and the steel case roof beam opposite side is connected through current string basket is stable, by hanging basket support second suspender unit, carries out the altitude mixture control to the steel case roof beam through first suspender unit and second suspender unit, and overall structure stability is high, effectively guarantees the stability of steel case roof beam in the fine setting in-process in the reinforced concrete combination section. And the overlong construction period is avoided.
Example two
The embodiment provides a temporary fixing method for the rear end of steel-concrete combined section hoisting construction, which adopts the temporary fixing device for the rear end of steel-concrete combined section hoisting construction in the embodiment one, and comprises the following contents:
before pouring the last section of the concrete girder, pre-burying finish-rolled screw thread steel 6 on the web plate of the section according to the design position;
the last section of the concrete girder is poured, a plurality of steel cushion beams 9 are placed on the surface of the concrete girder before the steel box girder of the steel-concrete combined section is hoisted, a steel longitudinal beam 1 is installed, the steel longitudinal beam 1 is fixed through a fourth beam 7 and pre-buried finish rolling screw thread steel 6, and one end of the steel longitudinal beam 1 is suspended out of the concrete girder and has a set length of 1m;
after the steel-concrete combined section steel box girder 13 is initially hoisted in place, the first suspender is connected with a rear lifting lug preset on the steel box girder 13;
installing a first beam 3 and a jack 5, jacking up the shoulder pole beam 4 by utilizing the jack 5, fixing the first suspender 2 and a corresponding second beam through a pin shaft, and fixing the rear end of the steel-concrete combination section;
the hanging basket 10 is connected with the temporarily fixed front lifting lug through a second hanging strip, a first beam, a jack and a second beam at the second hanging strip unit are installed, and the second hanging strip and the corresponding second beam are fixedly connected through a pin shaft;
the floating crane of the steel box girder slowly releases the hook, and the bearing capacity is transferred to the hanging basket 10 and the steel longitudinal girder 1, and the monitoring is carried out in the process until the floating crane is completely unhooked.
The height of the steel box girder means displacement in the height direction of the steel box girder; the floating crane is a floating crane in the prior art.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section is characterized by comprising a bearing unit, wherein the bearing unit is supported by a concrete main beam, one side of the bearing unit is fixedly connected with the concrete main beam through an anchoring unit, the other side of the bearing unit is suspended above a steel box girder which is hoisted in place, a first sling unit is supported on the cantilever side of the bearing unit and is connected with the steel box girder which is hoisted in place, the hoisted steel box girder is connected with a hanging basket through a second sling unit, a distance is set between the first sling unit and the second sling unit along the length direction of the concrete main beam, and the elevation of the steel box girder is adjusted through the first sling unit and the second sling unit;
the first hanging belt unit comprises a first hanging belt, one end of the first hanging belt is connected with a steel box girder which is hung in place, the first hanging belt is arranged on the side part of the cantilever side of the bearing unit and sequentially penetrates through a first girder and a second girder, a jack is arranged between the first girder and the second girder, and the second girder is fixedly connected with the first hanging belt;
the second suspender unit comprises a second suspender, one end of the second suspender is connected with the steel box girder in place in a hoisting mode, the second suspender sequentially penetrates through the hanging basket, the first girder, the jack and the second girder, and the second girder is fixedly connected with the second suspender.
2. The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section according to claim 1, wherein the first beam is perpendicular to the bearing unit, and the length of the first beam is larger than the width of the bearing unit;
the length direction of the bearing unit is along the length direction of the concrete girder.
3. The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section according to claim 1, wherein the first beam is provided with a plurality of first hanging strips, jacks and second beams;
the length direction of the second beam is perpendicular to the length direction of the first beam;
the second roof beam is the shoulder pole roof beam, and shoulder pole roof beam length direction both sides all set up the jack.
4. The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section according to claim 1, wherein the bearing unit comprises at least two third beams, and the third beams are positioned at the joint positions of the wing plates and the main plate of the steel box beam which is hoisted in place.
5. The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section according to claim 1, wherein the anchoring unit comprises an embedded part with one end embedded in the concrete main beam, and the embedded part sequentially penetrates through the bearing unit and the fourth beam and is fixed through a locking part.
6. The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section according to claim 1, wherein the bearing unit is arranged on the bridge deck above the concrete girder web through a cushion block;
the cushion block is perpendicular to the bearing unit, and the length of the cushion block is greater than the width of the bearing unit.
7. The temporary fixing device for the hoisting construction rear end of the reinforced concrete combined section according to claim 5, wherein the fourth beam is perpendicular to the bearing unit, and the length of the fourth beam is greater than the width of the bearing unit.
8. A method for temporarily fixing the rear end of a steel-concrete combined section hoisting construction, which adopts the device for temporarily fixing the rear end of the steel-concrete combined section hoisting construction according to any one of claims 1 to 7, and is characterized by comprising the following steps:
supporting a bearing unit through the concrete main beam which is constructed, wherein the bearing unit is connected with the concrete main beam;
after the steel box girder is primarily hoisted in place, connecting the hoisted steel box girder and the bearing unit with the first suspender unit;
the hanging basket is connected with the steel box girder which is hoisted in place through the second hanging belt unit;
loosening a lifting hook of the steel box girder, and transferring bearing capacity to the hanging basket and the concrete girder;
and adjusting the elevation of the steel box girder through the first hanging strip unit and the second hanging strip unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210320047.0A CN114673093B (en) | 2022-03-29 | 2022-03-29 | Temporary fixing device and method for hoisting construction rear end of reinforced concrete combined section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210320047.0A CN114673093B (en) | 2022-03-29 | 2022-03-29 | Temporary fixing device and method for hoisting construction rear end of reinforced concrete combined section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114673093A CN114673093A (en) | 2022-06-28 |
| CN114673093B true CN114673093B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210320047.0A Active CN114673093B (en) | 2022-03-29 | 2022-03-29 | Temporary fixing device and method for hoisting construction rear end of reinforced concrete combined section |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256521A (en) * | 1998-03-09 | 1999-09-21 | Sumitomo Constr Co Ltd | Bridge erection device |
| CN104727226A (en) * | 2015-02-15 | 2015-06-24 | 中交第一公路工程局有限公司 | Construction method for steel-concrete composite girder |
| CN112482241A (en) * | 2020-12-29 | 2021-03-12 | 中交二公局第一工程有限公司 | Walking type hanging bracket for post-pouring section of box girder flange plate and construction method thereof |
| CN214362946U (en) * | 2020-12-08 | 2021-10-08 | 中铁十一局集团第一工程有限公司 | Hanging basket sling height accurate adjusting device |
| CN113882280A (en) * | 2021-10-29 | 2022-01-04 | 中铁大桥局第九工程有限公司 | Construction method of steel-concrete mixed combined continuous rigid frame bridge |
-
2022
- 2022-03-29 CN CN202210320047.0A patent/CN114673093B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256521A (en) * | 1998-03-09 | 1999-09-21 | Sumitomo Constr Co Ltd | Bridge erection device |
| CN104727226A (en) * | 2015-02-15 | 2015-06-24 | 中交第一公路工程局有限公司 | Construction method for steel-concrete composite girder |
| CN214362946U (en) * | 2020-12-08 | 2021-10-08 | 中铁十一局集团第一工程有限公司 | Hanging basket sling height accurate adjusting device |
| CN112482241A (en) * | 2020-12-29 | 2021-03-12 | 中交二公局第一工程有限公司 | Walking type hanging bracket for post-pouring section of box girder flange plate and construction method thereof |
| CN113882280A (en) * | 2021-10-29 | 2022-01-04 | 中铁大桥局第九工程有限公司 | Construction method of steel-concrete mixed combined continuous rigid frame bridge |
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| CN114673093A (en) | 2022-06-28 |
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