CN212335747U - Beam slab in-situ prefabrication and installation system - Google Patents
Beam slab in-situ prefabrication and installation system Download PDFInfo
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- CN212335747U CN212335747U CN202022181194.3U CN202022181194U CN212335747U CN 212335747 U CN212335747 U CN 212335747U CN 202022181194 U CN202022181194 U CN 202022181194U CN 212335747 U CN212335747 U CN 212335747U
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- gantry crane
- steel
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- prefabricated
- highway
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- 238000009434 installation Methods 0.000 title claims abstract description 20
- 238000009417 prefabrication Methods 0.000 title claims abstract description 16
- 238000011065 in-situ storage Methods 0.000 title claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 88
- 239000010959 steel Substances 0.000 claims abstract description 88
- 230000002787 reinforcement Effects 0.000 claims description 10
- 239000002023 wood Substances 0.000 claims description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 21
- 238000012876 topography Methods 0.000 abstract description 5
- 239000011150 reinforced concrete Substances 0.000 description 5
- 241001669679 Eleotris Species 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
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Abstract
The utility model belongs to a prefabricated installing the system of beam slab normal position, the system includes the pier stud, high bent cap, case roof beam and gantry crane, the pier stud outside on highway both sides limit vertically is equipped with along the highway and supplies gantry crane to form the extension at the portal crane basis of last operation in the subaerial edge of highway both sides, or the outside portion of high bent cap outside on highway both sides limit outwards extends 1.1 ~ 1.7m, gantry crane operation is on gantry crane basis, be located and vertically be equipped with prefabricated platform on two high bent caps adjacent between the gantry crane basis, the lower extreme of prefabricated platform is the spacing distance and is equipped with the steel pipe pillar. The utility model discloses can on-the-spot topography of make full use of and pier post have had structural style, the prefabrication and the installation of the beam slab that go on the spot to reduce the expense, save the cost, reduce construction safety risk.
Description
Technical Field
The utility model belongs to a prefabricated mounting system of beam slab normal position.
Background
In hilly areas and steep terrain areas, highway construction is carried out, pier columns are mostly used as supporting structures of highways and the ground, the pier columns are formed by continuously casting reinforced concrete on the basis of bored cast-in-place piles, large reinforced concrete members on the upper portions of the pier columns sequentially comprise high cover beams positioned between the upper portions of two adjacent pier columns in the transverse bridge direction, and a plurality of box beams arranged side by side on the upper portions of two adjacent high cover beams in the longitudinal bridge direction. And a cushion 8 is arranged between the lower ends of the two sides of each box girder and the upper end of the corresponding high bent cap. The high bent cap is usually formed by continuously casting reinforced concrete on the upper end of a pier column by means of a template and a support frame, and a plurality of box girders are built in a prefabricated part factory, transported to a construction site one by a large beam slab transport vehicle and then lifted to a longitudinal bridge by a crane to be completed towards the upper parts of two adjacent high bent caps. Due to the fact that the box girder is large in size and heavy in weight, and is difficult to transport in a steep terrain area in a hillside area.
For example, the K32+150 bridge of the Tongding expressway in Gansu province is designed for separating double lanes side by side, namely double pier columns side by side and double high bent caps. The number of the central pile K32+150 is 20+20+20m, the span combination is 20+20+20m, the upper structure adopts a prestressed concrete uniform-section continuous box girder, the prefabrication, installation and construction are carried out, a single box and a single chamber are adopted, the using amount of the box girder is large, the lower part of the bridge adopts a column type bridge pier column with the diameter of 1.3m, a bored cast-in-place pile foundation is adopted, and the pile diameter is 1.5 m; the full-bridge range is in the hillside area, and the relief is precipitous, is not convenient for large-scale beam slab transport vechicle current, if adopt traditional prefabricated component factory prefabrication, transportation installation construction. Then need to build long distance high standard construction fortune roof beam passageway, construction cost is great. And the transportation in mountain areas has extremely high safety risk, and is not favorable for safety.
Disclosure of Invention
The utility model aims at designing a prefabricated mounting system of beam slab normal position, can make full use of on-the-spot topography and pier post have had structural style, the prefabrication and the installation of the beam slab that go on the spot to reduce the expense, save the cost, reduce construction safety risk.
Therefore, the utility model discloses a pier stud, high bent cap, case roof beam and gantry crane, wherein: a portal crane foundation for a portal crane to run upwards is longitudinally arranged on the ground outside the pier columns on two sides of the highway along the highway, the portal crane runs on the portal crane foundation, the upper ends of two longitudinally adjacent high cover beams positioned between the portal crane foundations are provided with prefabricated platforms, and the lower ends of the prefabricated platforms are provided with steel pipe support columns at intervals.
Or the outer sides of the high cover beams on the two sides of the highway extend outwards for 1.1-1.7 m to form extending parts, a plurality of pre-embedded fixing bolts are arranged on the upper end surfaces of the extending parts, a gantry crane foundation for a gantry crane to run upwards is longitudinally arranged on the upper end surface of each extending part along the highway, the gantry crane runs on the gantry crane foundation, prefabricated platforms are arranged at the upper ends of two high cover beams longitudinally adjacent to each other between the gantry crane foundations, and steel pipe supports are arranged at the lower ends of the prefabricated platforms at intervals.
The structure of the prefabricated platform is as follows: the upper ends of two steel pipe pillars which are distributed side by side at intervals are connected into a whole through an I-shaped steel cross beam to form a door-shaped support, a plurality of door-shaped supports are longitudinally arranged between two adjacent high cover beams at intervals, I-shaped steel longitudinal beams are longitudinally arranged on the upper ends of the door-shaped supports side by side, the lower parts of the two ends of each I-shaped steel longitudinal beam are supported on the upper end surfaces of the two longitudinally adjacent high cover beams, a plurality of square wood distribution beams are transversely arranged at intervals at the upper ends of the I-shaped steel longitudinal beams, and a platform panel is laid at the upper ends of the square wood distribution beams.
The upper end of the platform panel is provided with a prefabricated pedestal for prefabricating the box girder.
The gantry crane is characterized in that: the track bed, the sleepers and the steel rails fixed on the sleepers are arranged on the ground outside the pier columns on the two sides of the highway along the longitudinal direction of the highway; the rail wheels at the lower ends of the two sides of the portal crane run on the steel rails at the two sides. Or extending the outer side parts of the high bent cap beams on the two sides of the highway outwards for 1.1-1.7 m to form extension parts, supporting the two ends of the steel box beam and fixing the two extension parts on the two longitudinally adjacent extension parts on the same side through pre-embedded fixing bolts and nuts, arranging steel rails on the upper end surface of the steel box beam, and running rail wheels at the lower ends of the two sides of the portal crane on the steel rails on the two sides.
The steel box girder consists of two I-shaped steel girders which are fixed side by side into a whole and have the length larger than that between two adjacent high bent caps, and bolt holes are formed in the lower ends of the two sides of the steel box girder corresponding to the pre-buried fixing bolts on the extending parts.
The steel reinforcement cage in the high bent cap outwards extends to the extension from the outer side of the high bent cap, the lower ends of the embedded fixing bolts are connected with the steel reinforcement cage steel reinforcement of the corresponding portion, and the periphery of the embedded fixing bolts which are flush with the upper end face of the extension is provided with a pressure-bearing pretreatment steel plate.
The length of the prefabricated platform is larger than that of the prefabricated box girder. The width of the extension part is larger than that of the steel box girder.
The device achieves the purpose of the utility model.
The utility model discloses can on-the-spot topography of make full use of and pier post have had structural style, the prefabrication and the installation of the beam slab that go on the spot to reduce the expense, save the cost, reduce construction safety risk.
Compared with the prior art, the utility model, there are following advantage and positive effect:
(1) the utility model provides a full-bridge scope be in the hillside area, the relief is precipitous, is not convenient for the transportation of the current beam slab of large-scale beam slab transport vechicle and the difficult problem of installation, utilizes on-the-spot topography and pier post to have structural style, and the prefabrication and the installation of the beam slab of going on the spot have reduced paving and construction cost by a wide margin, have saved construction cost, reduce construction safety risk. The utility model discloses enable the operating expenses and reduce 50%, the time limit for a project shortens 20%, and the construction risk is low.
(2) The utility model discloses the implementation cost is low, adopts the existing equipment and the material of job site, and can stop the supporting construction risk in the precipitous area of relief, utilizes the utility model discloses can reduce the spoilage of beam slab transportation by a wide margin, improve beam slab installation quality. The utility model discloses the implementation cost is low, and the equipment layout spent time is short, can reduce construction cost when increasing substantially construction speed.
Drawings
Fig. 1 is a schematic top view of the present invention.
Fig. 2 is a schematic diagram of the structure of the prefabricated platform of the present invention.
Fig. 3 is a schematic side structure diagram of the prefabricated platform of the present invention.
Fig. 4 is a schematic view of the structure of the usage state of the present invention.
Fig. 5 is a schematic structural view of the gantry crane of the present invention using the extension of the high-canopy beam as a foundation.
Detailed Description
As shown in fig. 1 to 5, the in-situ prefabricating and mounting system for the beam slab comprises an abutment pillar 5, a high capping beam 3, a box beam 7 and a gantry crane 4. Wherein: and a gantry crane foundation 2 for a gantry crane to run up is longitudinally arranged on the ground outside the pier columns on the two sides of the highway along the highway, and the gantry crane runs on the gantry crane foundation. Be located vertical adjacent two high bent cap upper ends between portal crane basis and be equipped with prefabricated platform 1, the lower extreme of prefabricated platform is that the interval is equipped with steel pipe pillar 11.
Or the outer sides of the high cover beams 3 on the two sides of the highway extend outwards for 1.1-1.7 m to form extension parts 31, a plurality of pre-embedded fixing bolts 33 are arranged on the upper end surfaces of the extension parts, portal crane bases for the portal crane to run up are longitudinally arranged on the upper end surfaces of the extension parts along the highway, the portal crane runs on the portal crane bases, prefabricated platforms are arranged at the upper ends of the two high cover beams longitudinally adjacent to each other between the portal crane bases, and steel pipe supports are arranged at the lower ends of the prefabricated platforms at intervals.
The structure of the prefabricated platform is as follows: the upper ends of two steel pipe struts 11 which are distributed side by side at intervals are connected into a door-shaped bracket through an I-shaped steel beam 12. A plurality of door-shaped supports are longitudinally arranged between two adjacent high bent caps at intervals so as to ensure that the prefabricated platform is effectively and stably supported. The upper end of each door-shaped support is longitudinally provided with I-shaped steel longitudinal beams 13 side by side, the lower parts of the two ends of each I-shaped steel longitudinal beam are supported on the upper end surfaces of two longitudinally adjacent high cover beams, and the upper end of each I-shaped steel longitudinal beam is transversely provided with a plurality of square wood distribution beams 14 at intervals for uniformly guiding the pressure of the platform panel onto each I-shaped steel longitudinal beam. The upper end of each square timber distribution beam is paved with a platform panel 15. The platform panel is made of a steel plate with the thickness of 3 mm.
The upper end of platform panel be the interval side by side and be equipped with prefabricated pedestal 6 of 2 ~ 3 prefabricated case roof beams.
The gantry crane foundation 2 is as follows: the track roadbed, the sleeper and the steel rails 22 fixed on the sleeper are arranged on the ground outside the pier columns on the two sides of the highway along the longitudinal direction of the highway, the rail wheels at the lower ends of the two sides of the gantry crane run on the steel rails on the two sides, and the overhead traveling crane 41 for lifting objects is arranged on the lifting beam at the upper end of the gantry crane 4.
Or extending the outer side parts of the high bent cap beams on the two sides of the highway outwards for 1.1-1.7 m to form extension parts 31, supporting the two ends of a steel box beam 21 serving as a gantry crane foundation, fixing the two extension parts on two longitudinally adjacent extension parts on the same side through pre-embedded fixing bolts 33, gaskets and nuts 9, and arranging steel rails 22 on the upper end surface of the steel box beam. The rail wheels at the lower ends of the two sides of the portal crane run on the steel rails at the two sides.
The steel box girder consists of two I-shaped steel beams which are fixed side by side into a whole and have the length larger than the length between two adjacent high bent caps, the two I-shaped steel beams with enough supporting force are longitudinally welded into a whole in a side by side butt joint mode, and bolt holes are formed in the lower ends of the two sides of the steel box girder and correspond to the pre-buried fixing bolts on the extending portions so as to be conveniently fixed on the pre-buried fixing bolts of the extending portions.
The reinforcement cage 32 in the high bent cap outwards extends to the extension from the outer side of the high bent cap, the lower ends of the embedded fixing bolts are connected with the reinforcement cage steel bars of the corresponding portion, and the periphery of the embedded fixing bolts which are flush with the upper end face of the extension is provided with a pressure-bearing pre-treatment steel plate 34 to ensure that the steel box girder is fixed.
The length of the prefabricated platform is larger than that of the prefabricated box girder 71, so that the prefabricated box girder can be conveniently manufactured.
With traditional bridge structure, pier post upper portion large-scale reinforced concrete component is for being located the horizontal bridge in proper order to the high bent cap between two adjacent pier post upper portions, is located the longitudinal bridge and sets up a plurality of case roof beams side by side to two adjacent high bent cap upper portions. And a cushion 8 is arranged between the lower ends of the two sides of each box girder 7 and the upper end of the corresponding high bent cap. The high capping beam and the extension part thereof are formed by continuously casting reinforced concrete on the upper end of the pier column by virtue of the template and the support frame.
A construction method of a beam-slab in-situ prefabricating and mounting system comprises the following steps:
(1) selecting a construction scheme according to the terrain:
if: the sum of the heights of the pier columns protruding out of the ground and the high cover beam is smaller than the lifting height of the portal crane, the ground on the two sides of the pier columns is smoother and suitable for construction of a portal crane foundation, a track bed, a sleeper and steel rails fixed on the sleeper are longitudinally arranged on the ground on the outer sides of the pier columns on the two sides of the highway along the highway, and rail wheels at the lower ends of the two sides of the portal crane run on the steel rails on the two sides.
Otherwise, the outer side part of the high-cap beam extends outwards for 1.1-1.7 m to form an extension part as a gantry crane foundation.
(2) And (3) performing the construction of pier columns and high bent caps: if the extension parts are used as the foundation of the gantry crane, extension parts which extend outwards for 1.1-1.7 m are prepared at the outer side parts of the high-cover beams on the two sides of the highway, and reinforcement cages in the high-cover beams also extend into the extension parts so as to ensure the load bearing of the extension parts. The lower ends of the plurality of pre-embedded fixing bolts are connected with the reinforcement cage steel bars at the corresponding parts, the upper parts of the plurality of pre-embedded fixing bolts are convexly arranged on the upper end surface of the extending part, and the periphery of the pre-embedded fixing bolts which are flush with the upper end surface of the extending part is provided with a pressure-bearing pretreated steel plate.
(3) Constructing a gantry crane foundation and a steel pipe strut foundation: when the portal crane foundation is positioned on the ground, the track roadbed is compacted or the cement roadbed is poured, sleepers are paved on the roadbed, and steel rails are fixed on the sleepers.
And pouring a cement foundation on the ground corresponding to the lower end of the steel pipe strut.
The portal crane foundation on the high-cover beam extension is a steel box beam, two ends of the steel box beam are supported and fixed on two longitudinally adjacent extensions on the same side through pre-embedded fixing bolts and nuts, and a steel rail is fixed in the middle of the upper end face of the steel box beam.
The width of the extension part is larger than that of the steel box girder so as to fix the steel box girder conveniently.
(4) Assembling a gantry crane: the rail wheels at the lower ends of the two sides of the portal crane run on the steel rails at the two sides.
(5) Building a prefabricated platform: the prefabricated platform is built by utilizing a gantry crane, the lower end of each steel pipe strut is located on a cement foundation poured on the corresponding ground, the upper ends of two steel pipe struts distributed side by side at intervals are connected into a door-shaped support through an I-shaped steel cross beam, a plurality of door-shaped supports are longitudinally arranged between two adjacent high cover beams at intervals, I-shaped steel longitudinal beams are longitudinally arranged side by side at the upper ends of the door-shaped supports, the lower parts of the two ends of each I-shaped steel longitudinal beam are supported on the upper end surfaces of the two longitudinally adjacent high cover beams, a plurality of square wood distribution beams distributed transversely are arranged at intervals at the upper ends of the I-shaped steel longitudinal beams, and a platform panel is laid at the upper end of each square wood.
(6) The prefabricated pedestal is provided with 2-3 prefabricated box girders side by side at intervals on the platform panel. And pouring the prefabricated box girders on the prefabricated pedestal in situ, maintaining the prefabricated box girders, and applying prestress to the prefabricated box girders.
(7) And hoisting the prefabricated box girders one by using a crown block of the gantry crane, translating to the upper ends of the two adjacent high cover girders, and finishing the installation of the box girders 7 from inside to outside.
(8) And (3) mounting the box girder parts on the high bent cap occupied by the prefabricated platform: and (3) placing and storing each box girder on the upper end of each box girder which is installed by using a gantry crane, dismantling the prefabricated platform, and hoisting each stored box girder to a set position by using the gantry crane to complete the installation of each box girder.
(9) And (5) repeating the steps (3) to (8) to move the gantry crane foundation, the gantry crane and the prefabricated platform forward until the project is finished.
The joint parts of the two adjacent steel rails and the joint parts of the two adjacent steel box girders are arranged in a staggered manner so as to disperse the bearing capacity of the steel rails.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "provided," "fixed," and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In a word, the utility model discloses can on-the-spot topography of make full use of and pier post have had structural style, the prefabrication and the installation of the beam slab that go on the spot to reduce the expense, save the cost, reduce construction safety risk, can use widely.
Claims (8)
1. The utility model provides a prefabricated installing the system of beam slab normal position, includes pier stud, high bent cap, case roof beam and gantry crane, its characterized in that: a gantry crane foundation for a gantry crane to run up is longitudinally arranged on the ground outside the pier columns on two sides of the highway along the highway, the gantry crane runs on the gantry crane foundation, the upper ends of two longitudinally adjacent high cover beams positioned between the gantry crane foundations are provided with prefabricated platforms, and the lower ends of the prefabricated platforms are provided with steel pipe struts at intervals;
or the outer sides of the high cover beams on the two sides of the highway extend outwards for 1.1-1.7 m to form extending parts, a plurality of pre-embedded fixing bolts are arranged on the upper end surfaces of the extending parts, a gantry crane foundation for a gantry crane to run upwards is longitudinally arranged on the upper end surface of each extending part along the highway, the gantry crane runs on the gantry crane foundation, prefabricated platforms are arranged at the upper ends of two high cover beams longitudinally adjacent to each other between the gantry crane foundations, and steel pipe supports are arranged at the lower ends of the prefabricated platforms at intervals.
2. A beam and slab in situ prefabrication and installation system according to claim 1, wherein: the structure of the prefabricated platform is as follows: the upper ends of two steel pipe pillars which are distributed side by side at intervals are connected into a whole through an I-shaped steel cross beam to form a door-shaped support, a plurality of door-shaped supports are longitudinally arranged between two adjacent high cover beams at intervals, I-shaped steel longitudinal beams are longitudinally arranged on the upper ends of the door-shaped supports side by side, the lower parts of the two ends of each I-shaped steel longitudinal beam are supported on the upper end surfaces of the two longitudinally adjacent high cover beams, a plurality of square wood distribution beams are transversely arranged at intervals at the upper ends of the I-shaped steel longitudinal beams, and a platform panel is laid at the upper ends of the square wood distribution beams.
3. A beam and slab in situ prefabrication and installation system according to claim 2, wherein: the upper end of the platform panel is provided with a prefabricated pedestal for prefabricating the box girder.
4. A beam and slab in situ prefabrication and installation system according to claim 1, wherein: the gantry crane is characterized in that: the track bed, the sleepers and the steel rails fixed on the sleepers are arranged on the ground outside the pier columns on the two sides of the highway along the longitudinal direction of the highway; rail wheels at the lower ends of the two sides of the gantry crane run on the steel rails at the two sides;
or extending the outer side parts of the high bent cap beams on the two sides of the highway outwards for 1.1-1.7 m to form extension parts, supporting the two ends of the steel box beam and fixing the two extension parts on the two longitudinally adjacent extension parts on the same side through pre-embedded fixing bolts and nuts, arranging steel rails on the upper end surface of the steel box beam, and running rail wheels at the lower ends of the two sides of the portal crane on the steel rails on the two sides.
5. A beam and slab in situ prefabrication and installation system according to claim 4, wherein: the steel box girder consists of two I-shaped steel girders which are fixed side by side into a whole and have the length larger than that between two adjacent high bent caps, and bolt holes are formed in the lower ends of the two sides of the steel box girder corresponding to the pre-buried fixing bolts on the extending parts.
6. A beam and slab in situ prefabrication and installation system according to claim 1, wherein: the steel reinforcement cage in the high bent cap outwards extends to the extension from the outer side of the high bent cap, the lower ends of the embedded fixing bolts are connected with the steel reinforcement cage steel reinforcement of the corresponding portion, and the periphery of the embedded fixing bolts which are flush with the upper end face of the extension is provided with a pressure-bearing pretreatment steel plate.
7. A beam and slab in situ prefabrication and installation system according to claim 1, wherein: the length of the prefabricated platform is larger than that of the prefabricated box girder.
8. A beam and slab in situ prefabrication and installation system according to claim 1, wherein: the width of the extension part is larger than that of the steel box girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022181194.3U CN212335747U (en) | 2020-09-29 | 2020-09-29 | Beam slab in-situ prefabrication and installation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022181194.3U CN212335747U (en) | 2020-09-29 | 2020-09-29 | Beam slab in-situ prefabrication and installation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212335747U true CN212335747U (en) | 2021-01-12 |
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ID=74070989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022181194.3U Expired - Fee Related CN212335747U (en) | 2020-09-29 | 2020-09-29 | Beam slab in-situ prefabrication and installation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212335747U (en) |
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2020
- 2020-09-29 CN CN202022181194.3U patent/CN212335747U/en not_active Expired - Fee Related
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Granted publication date: 20210112 |