CN113186829A - Design and installation method of high-position beam falling bracket of simply supported steel box beam - Google Patents
Design and installation method of high-position beam falling bracket of simply supported steel box beam Download PDFInfo
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- CN113186829A CN113186829A CN202110476966.2A CN202110476966A CN113186829A CN 113186829 A CN113186829 A CN 113186829A CN 202110476966 A CN202110476966 A CN 202110476966A CN 113186829 A CN113186829 A CN 113186829A
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- steel box
- box girder
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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
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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Abstract
The invention provides a design and an installation method of a high-position beam falling bracket of a simply supported steel box beam. Simply prop up steel box girder high-order roof beam support design that falls includes: roadbed and steel box girder; the two concrete beams are arranged at the top of the roadbed; the pushing devices are arranged at the tops of the roadbed and the two concrete beams; the rear guide beam is arranged at one end of the steel box girder; and the front guide beam is arranged at the other end of the steel box girder. The design of the simply supported steel box girder high-position beam falling support provided by the invention has the advantages that the front guide beam and the rear guide beam are fixed on the steel box girder, then the steel box girder, the rear guide beam and the front guide beam are placed at the top of the pushing device, the steel box girder is moved onto the two concrete beams through the pushing device, the steel box girder is fixed through the bracket on the beam falling device, and then the front guide beam and the rear guide beam are disassembled, so that the installation of the steel box girder is realized, the manpower and material resources are saved, and the personal safety of workers is ensured.
Description
Technical Field
The invention relates to the field of steel bridge installation, in particular to a design and an installation method of a high-position beam falling bracket of a simply supported steel box girder.
Background
The steel box girder is also called steel plate box girder, and is a common structural form of a large-span bridge. The steel box girder is generally used on bridges with large span and is called as a steel box girder because the steel box girder is shaped like a box.
Along with the vigorous development of road traffic infrastructure construction in China, people put high requirements on attractive appearance design and practical design of bridges; the modeling design of bridges is more and more complex, and the technical difficulty of bridge installation and construction is increased year by year.
The high-position roof beam that falls of current steel box girder is when removing to the bridge position, generally need use a large amount of manpowers and material resources will fall the roof beam and remove the top to the concrete beam, consequently can reduce work efficiency, can cause the potential safety hazard to the staff simultaneously.
Therefore, it is necessary to provide a high-level beam falling bracket design for a simply supported steel box beam to solve the above technical problems.
Disclosure of Invention
The invention provides a design and an installation method of a high-position beam falling bracket of a simply supported steel box beam, and solves the problem that the high-position beam falling bracket of the simply supported steel box beam is inconvenient to install.
In order to solve the technical problem, the design of the simply supported steel box girder high-position girder falling bracket provided by the invention comprises the following steps: roadbed and steel box girder;
the two concrete beams are arranged at the top of the roadbed;
the pushing devices are arranged at the tops of the roadbed and the two concrete beams;
the rear guide beam is arranged at one end of the steel box girder;
the front guide beam is arranged at the other end of the steel box girder;
the two beam falling devices are fixed on one sides of the tops, close to each other, of the two concrete beams and comprise two steel pipe stand columns, the top ends of the two steel pipe stand columns are provided with penetrating tops, finish-rolled deformed steel bars are arranged on the two steel pipe stand columns, and the top ends of the two finish-rolled deformed steel bars extend out of the penetrating tops respectively;
two brackets, two the bracket sets up respectively in two on the roof beam device falls.
Preferably, two equal fixedly connected with steel pipe bracing in one side that the steel pipe stand kept away from each other, two the steel pipe bracing respectively with two the top fixed connection of concrete beam.
Preferably, the two steel pipe columns are respectively in threaded connection with the two concrete beams through a plurality of expansion bolts.
Preferably, the thrusters are provided with at least eight groups.
Preferably, the method further comprises the following steps: the limiting assembly is rotated at the top of the roadbed and comprises two rotating rods, two fixed wheels and two limiting plates, wherein the fixed wheels are fixedly connected to the rotating rods, and the two ends of the fixed wheels are fixedly connected with the limiting plates.
Preferably, two the fixed plate has all been cup jointed on the dwang, two the fixed plate passes through spacing spring fixed connection.
Preferably, the two limiting plates positioned on the same rotating rod are in sliding connection with the outer surface of the steel box girder.
Preferably, the limiting assemblies are at least provided with two groups.
The invention provides a method for mounting a high-position beam falling bracket of a simply supported steel box beam, which comprises the following steps of:
firstly: arranging a steel box girder splicing support and a pushing device on the existing concrete bridge floor, and sequentially assembling, welding, detecting, coating and the like the front guide girder, the rear guide girder and the steel box girder;
the next step is: starting a pushing device, carrying out pushing operation on the steel box girder according to a design working condition, measuring the axis of the steel box girder by using a total station in the pushing process, and monitoring and controlling the position of the steel box girder;
the next step is: after the steel box girder is pushed in place, welding two groups of brackets for beam falling at the top plates at the two ends of the steel box girder, removing the front guide girder, and installing high-position beam falling devices on the concrete bridge floor at the two ends of the steel box girder to complete the installation work of the bracket;
the next step is: an oil jack is arranged on the high-position beam falling bracket, and a deformed steel bar is adopted to vertically communicate the beam falling bracket and the steel box beam with the assembled bracket.
And finally: debugging hydraulic jack through circulation adjustment screw-thread steel nut position, controls hydraulic jack's stroke comes the roof beam that falls gradually, makes the steel case roof beam fall on the support, and the horizontal steel case roof beam position is indulged in the synchronous adjustment, reaches the finished bridge and accepts the standard after guaranteeing to fall the roof beam.
Compared with the prior art, the design of the simply supported steel box girder high-position girder falling bracket provided by the invention has the following beneficial effects:
the invention provides a design and an installation method of a simply supported steel box girder high-position beam falling support.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a high-level beam falling bracket design of a simply supported steel box girder provided by the invention;
FIG. 2 is a view of the high drop beam support arrangement shown in FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic structural diagram of a second embodiment of the high-level beam falling bracket design of the simply supported steel box girder provided by the invention;
fig. 5 is an enlarged view of the portion B shown in fig. 4.
Reference numbers in the figures:
1. a roadbed;
2. a concrete beam;
3. a pushing device;
4. a steel box girder;
5. a rear guide beam;
6. a front guide beam;
7. a beam falling device 71, a steel pipe upright post 72, a piercing jack 73, finish-rolled deformed steel bars 74, an expansion bolt 75 and a steel pipe inclined strut;
8. a bracket;
9. spacing subassembly, 91, dwang, 92, tight pulley, 93, limiting plate, 94, fixed plate, 95, spacing spring.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
The first embodiment:
please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of a first embodiment of a simply supported steel box girder high-position girder-falling bracket design provided by the present invention; FIG. 2 is a view of the high drop beam support arrangement shown in FIG. 1; fig. 3 is an enlarged view of the portion a shown in fig. 2. The design of simply supported steel box girder high-order roof beam support that falls includes: a roadbed 1 and a steel box girder 4;
the two concrete beams 2 are arranged on the top of the roadbed 1;
the pushing devices 3 are arranged at the tops of the roadbed 1 and the two concrete beams 2;
the rear guide beam 5 is arranged at one end of the steel box girder 4;
the front guide beam 6 is arranged at the other end of the steel box girder 4;
the two beam falling devices 7 are fixed on one sides of the tops, close to each other, of the two concrete beams 2, each beam falling device 7 comprises two steel pipe columns 71, penetrating tops 72 are arranged at the top ends of the two steel pipe columns 71, finish-rolled deformed steel bars 73 are arranged on the two steel pipe columns 71, and the top ends of the two finish-rolled deformed steel bars 73 extend out of the penetrating tops 72 respectively;
two brackets 8, two the brackets 8 set up respectively in two on the roof beam device 7 falls.
Through fixing preceding nose girder 6 and back nose girder 5 on steel box girder 4, then with steel box girder 4, top of thrustor 3 is placed to back nose girder 5 and preceding nose girder 6, move steel box girder 4 to two concrete beam 2 through thrustor 3, fix steel box girder 4 through bracket 8 on the roof beam device 7 that falls, then dismantle preceding nose girder 6 and back nose girder 5, thereby realize the installation to steel box girder 4, manpower and materials have been practiced thrift, staff's personal safety has been ensured simultaneously.
Two equal fixedly connected with steel pipe bracing 75 in the one side that steel pipe stand 71 kept away from each other, two steel pipe bracing 75 respectively with two the top fixed connection of concrete beam 2.
The two steel pipe columns 71 are respectively in threaded connection with the two concrete beams 2 through a plurality of expansion bolts 74.
The steel pipe column 71 is stably fixed to the top end of the concrete beam 2 by the expansion bolts 74, and the steel pipe column 71 is supported and fixed by the steel pipe diagonal braces 75, thereby protecting the steel pipe column 71 and the corbel 8.
The thrustor 3 is provided with at least eight groups.
Eight groups of pushing devices 3 are arranged, so that pushing operation is carried out on the front guide beam 6 and the steel box beam 4, and the steel box beam 4 is moved.
The invention provides a method for mounting a high-position beam falling bracket of a simply supported steel box beam, which comprises the following steps of:
firstly: arranging a steel box girder splicing support and a pushing device 3 on the existing concrete bridge floor, and sequentially assembling, welding, detecting, coating and the like the front guide girder 6, the rear guide girder 5 and the steel box girder 4;
the next step is: starting the pushing device 3, performing pushing operation on the steel box girder 4 according to a design working condition, measuring the axis of the steel box girder by using a total station in the pushing process, and monitoring and controlling the position of the steel box girder;
the next step is: after the steel box girder 4 is pushed in place, two groups of corbels 8 for girder falling are welded at the top plates at the two ends of the steel box girder 4, the front guide girder 6 is removed, and high-position girder falling devices 7 are installed on the concrete bridge floor at the two ends of the steel box girder 4 to complete the installation work of the support;
the next step is: an oil jack is arranged on the high-position beam falling bracket, and the beam falling bracket and the steel box beam 4 with the assembled bracket 8 are communicated in the up-down direction by adopting deformed steel bars.
And finally: debugging hydraulic jack through circulation adjustment screw-thread steel nut position, controls hydraulic jack's stroke comes the roof beam that falls gradually, makes steel box girder 4 fall on the support, and the horizontal steel box girder position is indulged in the synchronous adjustment, reaches the finished bridge and accepts the standard after guaranteeing to fall the roof beam.
Compared with the prior art, the design of the simply supported steel box girder high-position girder falling bracket provided by the invention has the following beneficial effects:
through fixing preceding nose girder 6 and back nose girder 5 on steel box girder 4, then with steel box girder 4, top of thrustor 3 is placed to back nose girder 5 and preceding nose girder 6, move steel box girder 4 to two concrete beam 2 through thrustor 3, fix steel box girder 4 through bracket 8 on the roof beam device 7 that falls, then dismantle preceding nose girder 6 and back nose girder 5, thereby realize the installation to steel box girder 4, manpower and materials have been practiced thrift, staff's personal safety has been ensured simultaneously.
Second embodiment:
referring to fig. 4 and 5, based on a simple supported steel box girder high-position girder falling bracket design provided in the first embodiment of the present application, a second embodiment of the present application provides another simple supported steel box girder high-position girder falling bracket design. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
Specifically, the difference that simply supported steel box girder high level that the second embodiment of this application provided falls roof beam support design lies in, simply supported steel box girder high level falls roof beam support design, still includes: spacing subassembly 9, spacing subassembly 9 rotate in the top of road bed 1, spacing subassembly 9 includes two dwang 91, two equal fixedly connected with tight pulley 92 on the dwang 91, two the equal fixedly connected with limiting plate 93 in both ends of tight pulley 92.
Carry on spacingly to preceding nose girder 6 through spacing subassembly 9, remove the in-process at preceding nose girder 6 and carry on spacingly, make preceding nose girder 6 drive steel box girder 4 and stabilize and remove on concrete beam 2, improve the stability that steel box girder 4 removed, the convenient installation to steel box girder 4.
Two all cup jointed fixed plate 94 on the dwang 91, two fixed plate 94 passes through spacing spring 95 fixed connection.
The two fixing plates 94 are close to each other through the limiting springs 95, so that the two rotating rods 91 are close to each other, the steel box girder 4 is limited through the limiting plate 93, and the steel box girder 4 is stably moved on the pushing device 3.
And the two limiting plates 93 positioned on the same rotating rod 91 are in sliding connection with the outer surface of the steel box girder 4.
The limiting assemblies 9 are at least provided with two groups.
The steel box girder 4 slides in the two limit plates 93 on the fixed wheels 92, so that the steel box girder 4 stably slides on the fixed wheels 92, and the steel box girder 4 stably slides on the pushing device 3.
When in work:
when roadbed 1 moves, place steel box girder 4 between two limiting plates 93 in tight pulley 92, make tight pulley 92 rotate at steel box girder 4 removal in-process to make limiting plate 93 rotate, thereby make dwang 91 rotate on roadbed 1, thereby make steel box girder 4 stabilize and remove on roadbed 1 and concrete beam 2, make things convenient for the installation of steel box girder 4.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. Simply prop up steel case roof beam high-order roof beam support design that falls, its characterized in that includes: roadbed and steel box girder;
the two concrete beams are arranged at the top of the roadbed;
the pushing devices are arranged at the tops of the roadbed and the two concrete beams;
the rear guide beam is arranged at one end of the steel box girder;
the front guide beam is arranged at the other end of the steel box girder;
the two beam falling devices are fixed on one sides of the tops, close to each other, of the two concrete beams and comprise two steel pipe stand columns, the top ends of the two steel pipe stand columns are provided with penetrating tops, finish-rolled deformed steel bars are arranged on the two steel pipe stand columns, and the top ends of the two finish-rolled deformed steel bars extend out of the penetrating tops respectively;
two brackets, two the bracket sets up respectively in two on the roof beam device falls.
2. The design of a high-level beam falling bracket of a simply supported steel box beam according to claim 1, wherein one sides of the two steel tube upright columns, which are far away from each other, are fixedly connected with steel tube inclined struts, and the two steel tube inclined struts are respectively and fixedly connected with the tops of the two concrete beams.
3. The design of a simply supported steel box girder high-level beam falling bracket according to claim 1, wherein both of the two steel pipe columns are respectively in threaded connection with the two concrete beams through a plurality of expansion bolts.
4. The design of a simply supported steel box girder high-level beam falling bracket according to claim 1, wherein the thrusters are provided with at least eight groups.
5. The design of a simply supported steel box girder high-level beam falling bracket according to claim 1, further comprising: the limiting assembly is rotated at the top of the roadbed and comprises two rotating rods, two fixed wheels and two limiting plates, wherein the fixed wheels are fixedly connected to the rotating rods, and the two ends of the fixed wheels are fixedly connected with the limiting plates.
6. The design of a high-level beam falling bracket of a simply supported steel box girder according to claim 6, wherein two rotating rods are sleeved with fixing plates, and the two fixing plates are fixedly connected through a limiting spring.
7. The design of a high-level beam falling bracket of a simply supported steel box beam according to claim 6, wherein the two limiting plates on the same rotating rod are both in sliding connection with the outer surface of the steel box beam.
8. The simply supported steel box girder high-level drop beam bracket design according to claim 6, wherein at least two groups of limiting assemblies are provided.
9. A method for mounting a high-position beam falling bracket of a simply supported steel box beam comprises the following steps: firstly: arranging a steel box girder splicing support and a pushing device on the existing concrete bridge floor, and sequentially assembling, welding, detecting, coating and the like the front guide girder, the rear guide girder and the steel box girder;
the next step is: starting a pushing device, carrying out pushing operation on the steel box girder according to a design working condition, measuring the axis of the steel box girder by using a total station in the pushing process, and monitoring and controlling the position of the steel box girder;
the next step is: after the steel box girder is pushed in place, welding two groups of brackets for beam falling at the top plates at the two ends of the steel box girder, removing the front guide girder, and installing high-position beam falling devices on the concrete bridge floor at the two ends of the steel box girder to complete the installation work of the bracket;
the next step is: an oil jack is arranged on the high-position beam falling bracket, and a deformed steel bar is adopted to vertically communicate the beam falling bracket and the steel box beam with the assembled bracket.
And finally: debugging hydraulic jack through circulation adjustment screw-thread steel nut position, controls hydraulic jack's stroke comes the roof beam that falls gradually, makes the steel case roof beam fall on the support, and the horizontal steel case roof beam position is indulged in the synchronous adjustment, reaches the finished bridge and accepts the standard after guaranteeing to fall the roof beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476966.2A CN113186829A (en) | 2021-04-29 | 2021-04-29 | Design and installation method of high-position beam falling bracket of simply supported steel box beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476966.2A CN113186829A (en) | 2021-04-29 | 2021-04-29 | Design and installation method of high-position beam falling bracket of simply supported steel box beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113186829A true CN113186829A (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110476966.2A Pending CN113186829A (en) | 2021-04-29 | 2021-04-29 | Design and installation method of high-position beam falling bracket of simply supported steel box beam |
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|---|---|
| CN (1) | CN113186829A (en) |
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- 2021-04-29 CN CN202110476966.2A patent/CN113186829A/en active Pending
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