CN114438889B - Construction method for pouring steel-concrete composite Liang Liangjian cast-in-situ bridge deck - Google Patents
Construction method for pouring steel-concrete composite Liang Liangjian cast-in-situ bridge deck Download PDFInfo
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- CN114438889B CN114438889B CN202210087105.XA CN202210087105A CN114438889B CN 114438889 B CN114438889 B CN 114438889B CN 202210087105 A CN202210087105 A CN 202210087105A CN 114438889 B CN114438889 B CN 114438889B
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
Abstract
The utility model discloses a construction method, in particular discloses a construction method for pouring a cast-in-situ bridge deck of a reinforced concrete composition Liang Liangjian, and belongs to the technical field of construction processes of constructional engineering structures. The technical problems to be solved by the utility model are as follows: the construction method for pouring the cast-in-situ bridge deck of the reinforced concrete composition Liang Liangjian is relatively short in construction period and convenient in construction operation. The construction method comprises the steps of factory manufacture of a formwork support adjusting frame, field installation of the formwork support adjusting frame and a driving device, primary installation of a bottom die assembly and sectional continuous casting of a reinforced concrete composite Liang Liangjian cast-in-situ bridge deck, wherein when the sectional continuous casting of the reinforced concrete composite Liang Liangjian cast-in-situ bridge deck is carried out, a section of reinforced concrete composite Liang Liangjian cast-in-situ bridge deck is cast, maintenance is carried out, then the driving device moves the bottom die assembly backwards, a section of reinforced concrete composite Liang Liangjian cast-in-situ bridge deck is cast, maintenance is carried out, and the like until the casting of the whole inter-beam cast-in-situ bridge deck is completed.
Description
Technical Field
The utility model relates to a construction method, in particular to a construction method for pouring a cast-in-situ bridge deck of a reinforced concrete composition Liang Liangjian, and belongs to the technical field of construction processes of constructional engineering structures.
Background
At present, the steel-concrete composite beam structure is widely applied in the municipal traffic field, and is now the first choice of a large-span main beam form. The reinforced concrete bridge deck with the thickness of about 30cm is generally poured on the top surface of the steel box girder when the steel-concrete composite girder is designed, so that a cross steel box girder is transversely connected into a whole, and the whole stress state is achieved. When the steel box girder spans the existing highway or railway, the cast-in-situ bridge deck construction cannot be carried out according to the traditional full-hall support or steel plate suspended bottom formwork because the passing or limit height of the lower road section is not required, and the bridge deck formwork support system among the steel box girders for accelerating the construction progress is particularly outstanding because of the characteristics of municipal administration, the complexity of the construction environment of the highway steel box girder and the like, and the study on the construction cost of the formwork system is reduced while the safety passing operation of the lower road section is required.
The utility model discloses a formwork system for a steel box-concrete composite beam bridge deck, which is named as CN214939289U, and comprises a steel box girder bottom plate, wherein the top surface of the steel box girder bottom plate is connected with a vertical steel box girder side web plate and a steel box girder middle web plate, each steel box girder side web plate and the top of the steel box girder middle web plate are provided with a steel box girder top plate, the steel box girder side web plates on two sides are provided with an adjustable triangular bracket cantilever flange plate cantilever casting system, and a cast-in-situ bridge deck bottom flexible nondestructive clamping opposite supporting bottom die supporting system is arranged between the steel box girder middle web plate and the steel box girder side web plates. The formwork support system is only suitable for the construction of the bridge deck supported by the steel bottom plate of a single steel box girder, has a large number of parts, large field assembly and disassembly engineering quantity, long construction period and high cost, and is not suitable for the formwork support system of the cast-in-situ bridge deck of the integral steel-concrete combination Liang Liangjian.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the construction method for pouring the cast-in-situ bridge deck of the reinforced concrete composition Liang Liangjian is relatively short in construction period and convenient in construction operation.
The technical scheme adopted for solving the technical problems is as follows: the construction method for pouring the cast-in-situ bridge deck of the reinforced concrete composition Liang Liangjian comprises the steps of factory manufacture of a formwork support adjusting frame, field installation of the formwork support adjusting frame and a driving device, primary installation of a bottom die assembly and sectional continuous pouring of the cast-in-situ bridge deck of the reinforced concrete composition Liang Liangjian,
wherein, when the sectional continuous casting of the steel-concrete composite Liang Liangjian cast-in-place bridge deck slab is carried out, casting a section of the steel-concrete composite Liang Liangjian cast-in-place bridge deck slab, curing, then casting a section of the steel-concrete composite Liang Liangjian cast-in-place bridge deck slab by the driving device moving the bottom die assembly backwards, curing, and the like until the casting of the whole inter-beam cast-in-place bridge deck slab is completed.
Further, the formwork support adjusting frame comprises process struts, distribution beams and adjusting components, wherein the distribution beams are arranged on inter-beam tie beams through the process struts, and the adjusting components are arranged on the distribution beams; the assembled bottom die assembly is supported on the distribution beam and can be lifted along the height direction under the cooperation of the adjusting assembly.
The preferable mode of the scheme is that the process support column comprises a plurality of sets of process support columns, wherein each set of process support columns are distributed on each beam-to-beam system beam in a grouping mode along the length direction, each distribution beam comprises a plurality of distribution sub-beams, each distribution sub-beam is arranged on the beam-to-beam system beam through each set of process support columns, the assembled bottom die assembly is supported on a plane formed by each distribution sub-beam, and the adjusting assembly is arranged on each distribution sub-beam.
Further, a plurality of groups of supporting pulley blocks are respectively arranged on each distribution sub-beam, and a moving track is also arranged on the bottom surface of the bottom die assembly; the bottom die assembly is lowered onto a plane formed by each group of supporting pulley blocks through the adjusting assembly, and can move along a set direction through the driving device under the cooperation of the supporting pulley blocks and the moving track.
The preferable mode of the scheme is that the driving device at least comprises a winch, and the power output end of the winch is connected with the bottom die assembly; the adjusting component consists of a plurality of sets of jacks, and each set of jack is arranged on the corresponding distribution sub-beam through a bracket arranged in the middle of the web plate of each distribution sub-beam.
Further, each group of the supporting pulley blocks comprises a support and a set of rolling bearings, wherein the rolling bearings are arranged on the support, and the support is arranged on the top surface of each distribution sub-beam.
The preferable mode of the scheme is that when the template supports the factory manufacture of the adjusting frame, the process support column and the distributing beam are respectively manufactured independently, the bracket is fixedly arranged in the middle of the web of the distributing sub-beam when the distributing sub-beam is manufactured, the rolling bearing is fixedly arranged on the bracket, and then the bracket is fixedly arranged on the top surface of each distributing sub-beam; when the template supporting and adjusting frame is installed on site, the top surfaces of the rolling bearings are positioned in the same plane as the reference, the distribution sub beams are adjusted and installed on the process supporting columns, and finally, the jacks are arranged on the corresponding brackets to complete the on-site installation of the template supporting and adjusting frame.
Further, after the bottom die assembly is firstly installed and lifted to a specified height through the adjusting assembly, binding steel bars on the bottom die assembly, pouring concrete and curing, and after the curing is qualified, releasing pressure through a jack to enable the bottom die assembly to descend and separate from the concrete to complete pouring of a section of reinforced concrete composite Liang Liangjian cast-in-situ bridge deck; and then moving the bottom die assembly to the next pouring position through the driving device, lifting the bottom die assembly to a specified height through the adjusting assembly, entering the next round of binding steel bars, pouring concrete and curing, and the like until the pouring of the whole cast-in-place bridge deck between the beams is completed.
Further, when the bottom die assembly is assembled on site, the prefabricated steel bottom templates are hoisted block by block and are seated on a fulcrum formed by the jack, so that the whole assembly of the bottom die assembly is completed.
The beneficial effects of the utility model are as follows: the construction method comprises the steps of factory manufacture of a formwork support adjusting frame, field installation of the formwork support adjusting frame and a driving device, primary installation of a bottom die assembly and sectional continuous casting of a reinforced concrete composite Liang Liangjian cast-in-situ bridge deck, and re-field casting of the reinforced concrete composite Liang Liangjian cast-in-situ bridge deck, wherein when the sectional continuous casting of the reinforced concrete composite Liang Liangjian cast-in-situ bridge deck is performed, a section of reinforced concrete composite Liang Liangjian cast-in-situ bridge deck is cast and maintained, and then the driving device moves the bottom die assembly backwards to cast a section of reinforced concrete composite Liang Liangjian cast-in-situ bridge deck, maintenance and so on until the whole inter-beam cast-in-situ bridge deck is cast. Therefore, the template support adjusting frame is manufactured in a factory firstly, then is safe once in the field, and is used for continuously moving the bottom die assembly and pouring concrete in sections under the cooperation of the driving device, so that the problem that the cost of adopting a full framing support to support a pouring die in the prior art is high and the problem that the full framing support template cannot be adopted because the passing or limiting height of a road section below is required to be ensured to be unsatisfied is solved, meanwhile, the height of the bottom die assembly is adjusted by the support adjusting assembly, the template assembly is moved while being poured, the purpose of one-time installation and multi-time use is realized, the obvious construction period is realized, and the construction operation is relatively convenient.
Drawings
FIG. 1 is a schematic diagram of the arrangement of the formwork support adjusting frame and the driving device on the beam of the beam-to-beam system in the construction method for pouring the cast-in-place bridge deck of the reinforced concrete composition Liang Liangjian;
fig. 2 is A-A view of fig. 1.
Marked in the figure as: the template support adjusting frame 1, the driving device 2, the bottom die assembly 3, the process support column 4, the distribution beam 5, the adjusting assembly 6, the inter-beam tie beam 7, the process support column 8, the distribution sub-beam 9, the support pulley block 10, the moving track 11 and the bracket 12.
Detailed Description
The construction method for pouring the cast-in-situ bridge deck of the reinforced concrete composition Liang Liangjian, provided by the utility model, has relatively short construction period and convenient construction operation as shown in fig. 1 and 2. The construction method comprises the steps of factory manufacture of the template support adjusting frame 1, field installation of the template support adjusting frame 1 and the driving device 2, primary installation of the bottom die assembly 3 and sectional continuous casting of the reinforced concrete composite Liang Liangjian cast-in-situ bridge deck,
wherein, when the sectional continuous casting of the steel-concrete composite Liang Liangjian cast-in-place bridge deck slab is carried out, casting a section of the steel-concrete composite Liang Liangjian cast-in-place bridge deck slab and curing are carried out, then a section of the steel-concrete composite Liang Liangjian cast-in-place bridge deck slab and curing are carried out by moving the bottom die assembly 3 backwards through the driving device 2, and the like until the casting of the whole inter-beam cast-in-place bridge deck slab is completed. Therefore, the template support adjusting frame is manufactured in a factory firstly, then is safe once in the field, and is used for continuously moving the bottom die assembly and pouring concrete in sections under the cooperation of the driving device, so that the problem that the cost of adopting a full framing support to support a pouring die in the prior art is high and the problem that the full framing support template cannot be adopted because the passing or limiting height of a road section below is required to be ensured to be unsatisfied is solved, meanwhile, the height of the bottom die assembly is adjusted by the support adjusting assembly, the template assembly is moved while being poured, the purpose of one-time installation and multi-time use is realized, the obvious construction period is realized, and the construction operation is relatively convenient.
In the above embodiment, in order to facilitate the factory manufacture, field installation and subsequent casting of the formwork support adjusting frame 1 according to the present application, the formwork support adjusting frame 1 described in the present application includes a process support column 4, a distribution beam 5 and an adjusting component 6, the distribution beam 5 is disposed on an inter-beam tie beam 7 through the process support column 4, and the adjusting component 6 is disposed on the distribution beam 7; the assembled bottom die assembly 3 is supported on the distribution beam 5 and can be lifted in the height direction under the cooperation of the adjusting assembly 6. At this time, the process support column 4 includes a plurality of sets of process support columns 8, each set of process support columns 8 are distributed on each beam-to-beam tie beam 7 in a grouping manner along the length direction, the distribution beam 5 includes a plurality of distribution sub-beams 9, each distribution sub-beam 9 is disposed on the beam-to-beam tie beam 7 through each set of process support columns 8, the assembled bottom die assembly 3 is supported on a plane formed by each distribution sub-beam 9, and the adjusting assembly 6 is disposed on each distribution sub-beam 9. In order to facilitate the movement, a plurality of groups of supporting pulley blocks 10 are respectively arranged on each distribution sub-beam 9, and a moving rail 11 is also arranged on the bottom surface of the bottom die assembly 3; the bottom die assembly 3 which is lowered onto the plane formed by the supporting pulley blocks 10 of each group through the adjusting assembly 6 can move along the set direction through the driving device 2 under the cooperation of the supporting pulley blocks 10 and the moving track 11. At this time, the driving device 2 should include at least one winch, the power output end of the said winch is connected with the die block assembly 3; the adjusting assembly 6 is composed of a plurality of sets of jacks, and each set of jack is arranged on the corresponding distribution sub-beam 9 through a bracket 12 arranged in the middle of the web of each distribution sub-beam. Correspondingly, each set of said supporting pulley blocks 10 comprises a seat on which said rolling bearings are arranged and a set of rolling bearings arranged on the top surface of each distribution sub-beam 9.
Further, for ease of manufacture and installation, the process leg 4 and the distribution beam 5 are manufactured separately at the factory of the formwork support adjusting frame 1, and the bracket 12 is fixed to the middle of the web of the distribution sub-beam at the time of manufacturing the distribution sub-beam 9, and the rolling bearing is fixed to the bracket, and then the bracket is fixed to the top surface of each distribution sub-beam 9; when the formwork support adjusting frame is installed on site, the top surfaces of the rolling bearings are positioned in the same plane, the distribution sub beams 9 are adjusted and installed on the process support columns 8, and finally the jacks are arranged on the corresponding brackets 12 to complete the on-site installation of the formwork support adjusting frame. After the bottom die assembly 3 is initially installed and lifted to a specified height through the adjusting assembly 6, binding steel bars on the bottom die assembly 3, pouring concrete and curing, and releasing pressure through a jack after the curing is qualified to enable the bottom die assembly to descend and separate from the concrete to complete pouring of a section of reinforced concrete composite Liang Liangjian cast-in-situ bridge deck; and then moving the bottom die assembly to the next pouring position through the driving device, lifting the bottom die assembly to a specified height through the adjusting assembly, entering the next round of binding steel bars, pouring concrete and curing, and the like until the pouring of the whole cast-in-place bridge deck between the beams is completed. When the bottom die assembly 3 is assembled on site, the prefabricated steel bottom templates are hoisted block by block and are seated on a fulcrum formed by the jack, so that the integral assembly of the bottom die assembly 3 is completed.
In summary, by adopting the construction method provided by the application, the technical problem that cast-in-situ bridge deck construction cannot be carried out according to the traditional full-hall support or steel plate bottom-hanging formwork due to the fact that the lower road section is required to ensure that the passing or limiting height is not satisfied when the steel box girder spans the existing highway or railway is solved, and the problems of large engineering quantity and high manufacturing cost of the traditional formwork system are solved while the safety operation and the passing of the lower road section are satisfied. The purposes of quick construction period, material saving and high safety are achieved.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In order to solve the technical problems, the technical scheme adopted by the application is as follows:
the support system of the steel-concrete composite Liang Liangjian cast-in-situ bridge deck sliding steel bottom die specifically comprises the following component structures:
1. temporary support columns and distribution beams are arranged on the beam-to-beam tie beams;
2. arranging a jack on a bracket of the distribution beam;
3. the prefabricated steel bottom die is hoisted block by block at the initial section and is seated on a jack fulcrum, and the integral assembly of the running water section is completed.
The construction sequence of the running water section is as follows: the steel bottom die is integrally lifted to the elevation of the bottom of the bridge deck plate, steel bars are bound, concrete is poured, the jack is decompressed and demoulded after maintenance is completed, the guide rail is arranged on a sliding roller on the distribution beam, and the winch pulls the steel bottom die to slide to the next running water section.
Further, the temporary support columns and the distribution Liang Zaizhi are manufactured and assembled into a whole by adopting section steel pipes in factories, and are connected with the tie beams among the beams by bolts.
Further, a bracket for arranging a jack and a sliding roller for moving the steel bottom die are arranged on the distribution beam.
Further, a guide rail is welded on the longitudinal ribbing rib on the bottom surface of the steel bottom die.
And repeating the work of the construction sequence of the circulating water section until the construction of the bridge deck between the beams is completed.
Claims (5)
1. The construction method for pouring the cast-in-situ bridge deck of the steel-concrete composite Liang Liangjian is characterized by comprising the following steps of: the construction method comprises the steps of factory manufacture of the template support adjusting frame (1), field installation of the template support adjusting frame (1) and the driving device (2), primary installation of the bottom die assembly (3) and sectional continuous casting of the reinforced concrete composite Liang Liangjian cast-in-situ bridge deck,
wherein, when the segmented continuous casting of the reinforced concrete composite Liang Liangjian cast-in-situ bridge deck slab is carried out, a section of reinforced concrete composite Liang Liangjian cast-in-situ bridge deck slab is cast and maintained, then a section of reinforced concrete composite Liang Liangjian cast-in-situ bridge deck slab is cast and maintained by the driving device (2) moving the bottom die assembly (3) backwards, and the like until the casting of the whole cast-in-situ bridge deck slab among beams is completed,
the template support adjusting frame (1) comprises a process support column (4), a distribution beam (5) and an adjusting component (6), wherein the distribution beam (5) is arranged on a beam-to-beam system beam (7) through the process support column (4), and the adjusting component (6) is arranged on the distribution beam (5); the assembled bottom die assembly (3) is supported on the distribution beam (5) and can be lifted along the height direction under the cooperation of the adjusting assembly (6),
the process support column (4) comprises a plurality of sets of process support columns (8), wherein each set of process support columns (8) are distributed on each beam-to-beam gap beam (7) in a grouping way along the length direction, each distribution beam (5) comprises a plurality of distribution sub-beams (9), each distribution sub-beam (9) is arranged on each beam-to-beam gap beam (7) through each set of process support columns (8), the assembled bottom die assembly (3) is supported on a plane formed by each distribution sub-beam (9), the adjusting assembly (6) is arranged on each distribution sub-beam (9),
a plurality of groups of supporting pulley blocks (10) are respectively arranged on each distribution sub-beam (9), and a moving track (11) is also arranged on the bottom surface of the bottom die assembly (3); the bottom die assembly (3) is lowered onto a plane formed by each group of supporting pulley blocks (10) through the adjusting assembly (6), the bottom die assembly can move along a set direction through the driving device (2) under the cooperation of the supporting pulley blocks (10) and the moving track (11),
after the bottom die assembly (3) is firstly installed and is lifted to a specified height through the adjusting assembly (6), binding steel bars on the bottom die assembly (3), pouring concrete and curing, and after the curing is qualified, releasing pressure through a jack to enable the bottom die assembly to descend and separate from the concrete to complete pouring of a section of reinforced concrete composite Liang Liangjian cast-in-situ bridge deck; and then moving the bottom die assembly to the next pouring position through the driving device, lifting the bottom die assembly to a specified height through the adjusting assembly, entering the next round of binding steel bars, pouring concrete and curing, and the like until the pouring of the whole cast-in-place bridge deck between the beams is completed.
2. The construction method for casting the reinforced concrete composite Liang Liangjian cast-in-situ bridge deck according to claim 1, wherein the construction method comprises the following steps: the driving device (2) at least comprises a winch, and the power output end of the winch is connected with the bottom die assembly (3); the adjusting assembly (6) is composed of a plurality of sets of jacks, and each set of jack is arranged on the corresponding distribution sub-beam (9) through a bracket (12) arranged in the middle of the web of each distribution sub-beam.
3. The construction method for casting the reinforced concrete composite Liang Liangjian cast-in-situ bridge deck according to claim 1 or 2, wherein the construction method comprises the following steps: each group of supporting pulley blocks (10) comprises a support and a set of rolling bearings, wherein the rolling bearings are arranged on the support, and the support is arranged on the top surface of each distribution sub-beam (9).
4. The construction method for casting the cast-in-place bridge deck of the reinforced concrete composition Liang Liangjian as recited in claim 3, wherein the construction method comprises the following steps: when the template support adjusting frame (1) is manufactured in a factory, the process support column (4) and the distribution beams (5) are manufactured separately, the bracket (12) is fixedly arranged in the middle of the web of the distribution sub-beam when the distribution sub-beam (9) is manufactured, the rolling bearing is fixedly arranged on the support, and then the support is fixedly arranged on the top surface of each distribution sub-beam (9); when the formwork support adjusting frame is installed on site, the top surfaces of the rolling bearings are positioned in the same plane, the distribution sub beams (9) are adjusted and installed on the process supporting columns (8), and finally, the jacks are arranged on the corresponding brackets (12) to complete the on-site installation of the formwork support adjusting frame.
5. The construction method for casting the reinforced concrete composite Liang Liangjian cast-in-situ bridge deck according to claim 4, wherein the construction method comprises the following steps: when the bottom die assembly (3) is assembled on site, the prefabricated steel bottom templates are hoisted block by block and are seated on a fulcrum formed by the jack, so that the integral assembly of the bottom die assembly (3) is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087105.XA CN114438889B (en) | 2022-01-25 | 2022-01-25 | Construction method for pouring steel-concrete composite Liang Liangjian cast-in-situ bridge deck |
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| CN202210087105.XA CN114438889B (en) | 2022-01-25 | 2022-01-25 | Construction method for pouring steel-concrete composite Liang Liangjian cast-in-situ bridge deck |
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| CN114438889B true CN114438889B (en) | 2023-07-11 |
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| JP2000265417A (en) * | 1999-03-12 | 2000-09-26 | Kawaju Koji Kk | Moving timbering construction method for bridge floor slab overhang section |
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| CN112832137A (en) * | 2021-01-07 | 2021-05-25 | 安徽省公路桥梁工程有限公司 | Steel box-concrete combined beam bridge deck formwork system and construction method |
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