CN116180607A - Construction method of self-climbing operation platform of ultra-high bridge pier column - Google Patents
Construction method of self-climbing operation platform of ultra-high bridge pier column Download PDFInfo
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- CN116180607A CN116180607A CN202310249341.1A CN202310249341A CN116180607A CN 116180607 A CN116180607 A CN 116180607A CN 202310249341 A CN202310249341 A CN 202310249341A CN 116180607 A CN116180607 A CN 116180607A
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- hoop
- lifting
- platform
- pier column
- operation platform
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- 238000010276 construction Methods 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 239000002023 wood Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- 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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
- E04G5/045—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on profiles, e.g. I or H profiles
-
- 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
- E01D2101/26—Concrete reinforced
-
- 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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G2003/286—Mobile scaffolds; Scaffolds with mobile platforms mobile vertically
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G2005/008—Hoisting devices specially adapted as part of a scaffold system
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a construction method of a self-climbing operation platform of an ultra-high bridge pier column, which comprises the steps of operation platform installation, lifting hoop installation, fixed hoop and lifting basket installation, operation platform lifting, distribution descending and the like. The invention can reduce the construction cost and increase the construction efficiency.
Description
Technical Field
The invention relates to the technical field of pier column construction, in particular to a construction method of an ultrahigh bridge pier column self-climbing operation platform.
Background
The pier column of the overhead bridge is generally constructed by adopting a shaping steel template, an operation frame is required to be erected on the periphery of the column (an ordinary steel pipe or a disc buckle scaffold is adopted for erection), a general foundation is required to be treated, and particularly for a soft soil foundation, special treatment is required, the cost is high, the verticality and the axis position deviation of the column are difficult to correct, the pier column is prefabricated at present, but the transportation cost and the hoisting cost are high, the requirement on the bearing capacity of the foundation is higher, and particularly the soft soil foundation is more difficult to meet the hoisting requirement.
Disclosure of Invention
Aiming at the prior art, the invention provides a construction method of an ultrahigh bridge pier column self-climbing operation platform.
The invention provides a construction method of a self-climbing operation platform of an ultra-high bridge pier column, which comprises the following steps:
s1, installing an operation platform: when the pier column is constructed to a certain height, an operation platform is assembled, an upper bearing hoop is installed on the pier column, an upper platform hoop is installed at the upper end of the upper bearing hoop, a lower bearing hoop is installed below the upper bearing hoop, a lower platform hoop is installed at the upper end of the lower bearing hoop, an upper platform and a lower platform are installed on the upper platform hoop and the lower platform hoop respectively, and the upper platform and the lower platform are connected to form a stable operation platform;
s2, lifting hoop installation: installing a lifting hoop at the top of the pier column, and installing a lifting hook on the lifting hoop;
s3, installing a fixed hoop and a lifting basket: installing a plurality of fixed hoops at the bottom of the pier column, installing guide rails through the fixed hoops and the upper and lower bearing hoops, installing lifting material baskets on the guide rails through sliding blocks, and lifting the lifting material baskets through the lifting hooks;
s4, lifting an operation platform: lifting the whole operation platform to a preset position; constructing pier columns upwards for a certain distance, constructing pier column steel bars, templates and concrete, curing at normal temperature, continuously lifting the pier columns when the concrete strength is higher than 5Mpa, moving the lifting hoops to corresponding heights, and continuously lifting and stabilizing the operation platform;
s5, distribution is reduced: after the pier column top concrete template is removed, the pier column top concrete template can start to descend, and the corresponding fixing hoop is removed after the pier column top concrete template descends for a certain distance; moving the lifting hoop once every a distance downwards, dismantling the guide rail, and reciprocating the guide rail until the guide rail descends to the ground; removing the operation platform from top to bottom, removing the lifting hoops, removing the upper platform hoops and the lower platform hoops, and finally removing the rest fixed hoops; and after the disassembly is completed, the fittings are put in storage or transferred to the next pier stud.
Preferably, in S1, rubber rings are respectively disposed between the upper bearing hoop, the lower bearing hoop and the pier stud.
Preferably, in S2, five stiffening ribs are disposed at the connection parts of two sides of the lifting hoop.
Preferably, in S4, after being lifted to a predetermined position, the upper platform hoop and the lower platform hoop both use an embedded wooden wedge to prevent lateral movement and shake.
Compared with the prior art, the invention has the beneficial effects that: according to the construction method for the self-climbing operation platform of the ultra-high bridge pier column, provided by the invention, the column hoops are utilized to generate friction force to provide locking force, so that system lifting and descending are realized, meanwhile, the guide rail and the material basket are arranged on one side of the column, the lifting of the material basket is realized through the lifting hook arranged on the top column hoops, the vertical transportation of people and materials is realized, an operation frame does not need to be additionally erected, meanwhile, the column templates adopt the shaping wood templates, the lifting quality of the platform can be effectively reduced, and the correction of the pier column is easier; the method can avoid working procedures such as erection of the operation frame and the manway, foundation treatment and the like, reduces construction cost and increases construction efficiency.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1. pier column; 2. an upper load-bearing hoop; 3. an upper platform hoop; 4. a lower force bearing hoop; 5. a lower platform hoop; 6. a top platform; 7. a lower platform; 8. lifting the ferrule; 9. a lifting hook; 10. a fixing hoop; 11. a guide rail; 12. lifting the basket.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Examples
The construction method of the self-climbing operation platform of the ultra-high bridge pier column, as shown in fig. 1, comprises the following steps:
s1, installing an operation platform: when the pier column 1 is constructed to 3m high, an operation platform is assembled, an upper bearing hoop 2 is installed on the pier column 1, an upper platform hoop 3 is installed at the upper end of the upper bearing hoop 2, a lower bearing hoop 4 is installed below the upper bearing hoop 2, a lower platform hoop 5 is installed at the upper end of the lower bearing hoop 4, an annular upper platform 6 and an annular lower platform 7 are installed on the upper platform hoop 3 and the lower platform hoop 5 respectively, a plurality of steel pipes are connected with the upper platform 6 and the lower platform 7 to form a stable operation platform, and a stable system is finally formed, wherein the stable operation platform is specifically a connecting steel pipe, an inner ring pipe, a scattered horizontal pipe, an outer ring pipe, a reinforcing diagonal brace, an inner riser and an outer riser and an upper ring pipe of the upper platform 6 which are connected with the upper platform and the lower platform (6 and 7); rubber rings with the thickness of 10mm are arranged between the upper bearing hoop 2, the lower bearing hoop 4 and the pier column 1; and erecting a protection and full-paving scaffold board on the operation platform.
S2, lifting hoop installation: a lifting hoop 8 is installed on the top of the pier column 1, and a lifting hook 9 is installed on each of the front and rear sides of the lifting hoop 8.
S3, installing a fixed hoop and a lifting basket: three fixing hoops 10 are arranged at the bottom of the pier column 1, guide rails 11 are arranged through the fixing hoops 10 and upper and lower bearing hoops (2 and 4), lifting material baskets 12 are arranged on the guide rails 11 through sliding blocks, and the lifting material baskets 12 are lifted through lifting hooks 9.
S4, lifting an operation platform: adopting 4 electric hoists with 8t for trial lifting, (2 front and rear pier columns are respectively controlled in a centralized way), lifting for 300mm, then descending, increasing load (matching the column templates, the material tools and the personnel quality), reciprocating for three times according to the previous flow, lifting the whole operation platform to a preset position after confirming no errors, and preventing lateral movement and shaking by adopting an embedded wood wedge mode for the upper platform hoop 3 and the lower platform hoop 5 after lifting to the preset position; pier stud 1 upwards constructs 2m, pier stud reinforcing bar, template (adopt customized design wood pattern, 5mm thick steel waistband to consolidate), concrete construction, and normal atmospheric temperature maintenance is 1 day, and winter needs to confirm according to same condition test block intensity, and concrete intensity is higher than 5Mpa and can continue to promote, removes and promotes hoop 8 to corresponding height, continues to promote operation platform to fastening upper platform hoop 3 and lower platform hoop 5 stabilize operation platform.
S5, distribution is reduced: after the pier column top concrete template is removed, the pier column top concrete template can start to descend, and the corresponding fixing hoop 10 is removed every 1m of the pier column top concrete template is lowered; for each descent of 2m, moving the lifting hoop 8 once, dismantling the guide rail 11, and reciprocating in this way until the lifting hoop descends to the ground; removing the operation platform from top to bottom, removing the lifting hoops 8, removing the upper and lower platform hoops (3, 5) and the upper and lower bearing hoops (2, 4), and finally removing the remaining fixing hoops 10; and after the disassembly is completed, the fittings are put in storage or transferred to the next pier stud.
In the embodiment, all the column hoops are formed by bending a steel plate with the thickness of 20mm, the width is 300mm, and three stiffening ribs (the steel plate with the thickness of 20 mm) are arranged according to stress; circular arc treatment is all done to collar ring steel sheet upper and lower mouth, avoids scraping the pier stud, all adopts M24 bolt-up, except that upper platform hoop 3 and lower platform hoop 5, all sets up 10mm thick rubber circle between other collars and the pier stud to increase coefficient of friction.
In this embodiment, the outer sides of stiffening ribs on both sides of the upper platform hoop 3 and the lower platform hoop 5 are respectively provided with a connecting lug plate for connecting the upper platform 6 and the lower platform 7.
In this embodiment, three stiffening ribs are provided at the joints of the two sides of the fixing hoop 10, the upper bearing hoop 2 and the lower bearing hoop 4, and 4 holes (inner threads) 20 are formed on the front surface of the annular steel plate, so as to install the guide rail 11.
In this embodiment, the width of the lifting hoop 10 is 600mm, and five stiffening ribs are arranged at the joints of two sides so as to increase the friction area and pressure between the lifting hoop and the pier column 1, thereby increasing the friction force.
In this embodiment, the upper platform 6 is mainly manufactured by adopting 100×100×4 square steel pipes and 50×100×3 rectangular steel pipes, the upper and lower inner (outer) annular pipes are both manufactured by adopting square steel pipes, the horizontal scattered pipe is manufactured by adopting rectangular steel pipes (standing), the middle and inner annular pipes are manufactured by adopting rectangular steel pipes (flat), and the joint of the steel pipes is provided with an ear plate welded by a 10mm thick steel plate (used for connecting the steel pipes).
In this embodiment, the lower platform 7 is mainly manufactured by adopting 100×100×4 square steel pipes and 50×100×3 rectangular steel pipes, the annular pipe is manufactured by adopting square steel pipes, the diagonal bracing and the horizontal scattered pipe are manufactured by adopting rectangular steel pipes (vertical placement), the joint of the steel pipes is provided with an ear plate welded by a 10mm thick steel plate (used for connecting the steel pipes), and the bottom of the lower platform 7 is provided with six diagonal bracing positions, so that the platform forms a stable system, and the reliability is increased.
In the embodiment, the guide rail 11 is a customized cast iron guide rail (sliding guide rail), the model is HT40, and the length of the guide rail is 2m; the vertical columns, the middle vertical column, the upper and lower inner and outer horizontal rods of the lifting basket 12 are all made of 50 x 3 square steel pipes, four sides and the bottom surface are welded and sealed by adopting galvanized pattern steel plates with the thickness of 5mm, and material scattering is avoided. The lifting basket 12 is connected with the guide rail 11 in a fitting and sliding manner by adopting an roller bearing 50, and is limited to move forwards and backwards and leftwards and rightwards by a limit stop, so that the effect of preventing overturning is achieved, and the limit stop is made of cast low alloy steel (16 MnRE).
In the embodiment, a fixing device between a guide rail 11 and a column hoop is bent into a main stress member by adopting a 20mm thick steel plate, a 50 x 3 square steel tube is adopted for manufacturing a connecting member, 4M 20 bolts are adopted for connecting the steel plate of the fixing device with a fixing hoop 10, an upper bearing hoop 2 and a lower bearing hoop 4, and 4M 18 bolts are adopted for connecting the guide rail 11 and the fixing device; two fixing devices are arranged on the fixing hoops 10 at the upper and lower connecting positions of the guide rail 11 so as to splice the guide rail 11 up and down.
The foregoing is only the embodiments of the present invention, and therefore, the patent scope of the invention is not limited thereto, and all equivalent structures made by the description of the invention and the accompanying drawings are directly or indirectly applied to other related technical fields, which are all within the scope of the invention.
Claims (4)
1. The construction method of the self-climbing operation platform of the ultra-high bridge pier column is characterized by comprising the following steps of:
s1, installing an operation platform: when the pier column is constructed to a certain height, an operation platform is assembled, an upper bearing hoop is installed on the pier column, an upper platform hoop is installed at the upper end of the upper bearing hoop, a lower bearing hoop is installed below the upper bearing hoop, a lower platform hoop is installed at the upper end of the lower bearing hoop, an upper platform and a lower platform are installed on the upper platform hoop and the lower platform hoop respectively, and the upper platform and the lower platform are connected to form a stable operation platform;
s2, lifting hoop installation: installing a lifting hoop at the top of the pier column, and installing a lifting hook on the lifting hoop;
s3, installing a fixed hoop and a lifting basket: installing a plurality of fixed hoops at the bottom of the pier column, installing guide rails through the fixed hoops and the upper and lower bearing hoops, installing lifting material baskets on the guide rails through sliding blocks, and lifting the lifting material baskets through the lifting hooks;
s4, lifting an operation platform: lifting the whole operation platform to a preset position; constructing pier columns upwards for a certain distance, constructing pier column steel bars, templates and concrete, curing at normal temperature, continuously lifting the pier columns when the concrete strength is higher than 5Mpa, moving the lifting hoops to corresponding heights, and continuously lifting and stabilizing the operation platform;
s5, distribution is reduced: after the pier column top concrete template is removed, the pier column top concrete template can start to descend, and the corresponding fixing hoop is removed after the pier column top concrete template descends for a certain distance; moving the lifting hoop once every a distance downwards, dismantling the guide rail, and reciprocating the guide rail until the guide rail descends to the ground; removing the operation platform from top to bottom, removing the lifting hoops, removing the upper platform hoops and the lower platform hoops, and finally removing the rest fixed hoops; and after the disassembly is completed, the fittings are put in storage or transferred to the next pier stud.
2. The construction method of the self-climbing operation platform for the ultra-high bridge pier column according to claim 1, wherein in the step S1, rubber rings are arranged among the upper bearing hoop, the lower bearing hoop and the pier column.
3. The construction method of the self-climbing operation platform for the ultra-high bridge pier column according to claim 1 or 2, wherein in the step S2, five stiffening ribs are arranged at the connection parts of the two sides of the lifting hoop.
4. The construction method of the self-climbing operation platform for the ultra-high bridge pier column according to claim 1 or 2, wherein in the step S4, after the self-climbing operation platform is lifted to a preset position, the upper platform hoop and the lower platform hoop are prevented from moving and shaking laterally by adopting an embedded wooden wedge mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310249341.1A CN116180607A (en) | 2023-03-15 | 2023-03-15 | Construction method of self-climbing operation platform of ultra-high bridge pier column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310249341.1A CN116180607A (en) | 2023-03-15 | 2023-03-15 | Construction method of self-climbing operation platform of ultra-high bridge pier column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116180607A true CN116180607A (en) | 2023-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310249341.1A Pending CN116180607A (en) | 2023-03-15 | 2023-03-15 | Construction method of self-climbing operation platform of ultra-high bridge pier column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116180607A (en) |
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2023
- 2023-03-15 CN CN202310249341.1A patent/CN116180607A/en active Pending
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