CN219175652U - Prefabricated assembled concrete corrugated hollow column - Google Patents
Prefabricated assembled concrete corrugated hollow column Download PDFInfo
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- CN219175652U CN219175652U CN202223504632.0U CN202223504632U CN219175652U CN 219175652 U CN219175652 U CN 219175652U CN 202223504632 U CN202223504632 U CN 202223504632U CN 219175652 U CN219175652 U CN 219175652U
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Abstract
The utility model relates to a prefabricated assembled concrete corrugated hollow column, which comprises a metal corrugated pipe, a reinforcement cage connected to the outer peripheral side of the metal corrugated pipe and a concrete prefabricated area cast in the reinforcement cage area; the reinforcement cage comprises a plurality of main reinforcements extending along the axial direction of the hollow column and stirrups connected between the main reinforcements; the metal corrugated pipe is fixedly connected with the main steel bars and/or the stirrups, a hollow cast-in-place area is formed in the concrete prefabrication area, and the metal corrugated pipe is arranged on the side wall of the cast-in-place area. The utility model aims to provide a prefabricated concrete corrugated hollow column which is light in weight and excellent in integrity and earthquake resistance. The utility model has the advantages that: the hollow cast-in-situ area is arranged in the utility model, so that the volume and the square quantity of precast concrete can be reduced, the weight of precast components is reduced, transportation and hoisting are convenient, and the hoisting cost can be saved; and the metal corrugated pipe is used as the disposable inner template, and the metal corrugated pipe does not need to be dismantled.
Description
Technical Field
The utility model relates to the technical field of prefabricated building, in particular to a prefabricated concrete corrugated hollow column.
Background
In recent years, electronic commerce, transportation and modern logistics industry are vigorously developed, investment and blowout of the territory appear in logistics storage, construction of a modern large logistics garden and warehouse is promoted in all places, meanwhile, along with high-speed development of building industrialization, investment time cost and quick return requirements are met, the construction period of a traditional cast-in-situ reinforced concrete structure is long, the capital requirements are not met, and the modern large logistics warehouse adopting a prefabricated assembly construction mode is more and more favored in high-quality quick construction.
Taking the logistics center shown in fig. 10 as an example, the total building area of the logistics center is about 60 ten thousand square meters, wherein the warehouse consists of a plurality of 4-layer warehouses, and the monomer warehouse is as follows: the layer height is 10.8 meters, the length is 180 meters, the width is 80 meters, the standard column spacing is 12 meters, the load of the floor surface of the 2-4 layers is 3.5 tons, loading platform lanes are arranged on one long side of all the warehouses, and large cranes can be arranged on the ground of only one side and two ends of the short side or one end during construction.
The structural design effort shows that the general dimensions of the structural members are as follows: the column of the first layer is 1200x1200mm, C50, the column of the second layer is 1100x1100mm, C45, more than three layers are 1000x1000mm, C40, the main beam size of the beam C30 frame is 600x14000mm, the secondary beams are 400x1000mm, the secondary beam spacing is 3000mm, and the thickness of the floor slab is 180mm.
The beam columns are arranged according to a standard of 12 m square, the layer height is 10.8 m, the traditional cast-in-situ reinforced concrete mode is adopted for construction, the number of templates and scaffolds is large, the erection period is long, and the cost is high. The beam column plate component has high standardization degree due to regular structural plane, if the prefabricated assembly type construction mode is adopted, the beam column plate component has almost the same size, the turnover number of the mould is high, the component is very suitable for factory manufacture, the on-site assembly adopts mechanical hoisting construction, the component precision is high, the construction period of a large number of template supports and the corresponding cost are saved, the construction mode of improving the work efficiency and the engineering quality and saving the construction cost and the construction period is identical with the national development direction of the building industry.
The on-site automobile crane or the crawler crane is arranged in a mode that only one side or one end part of a building is provided, the arm length of the farthest component crane exceeds 80 meters, the first layer crane can enter the site, the second layer crane can only measure the weight of prefabricated components on the outer side of the building by taking two layers as an example, the column height is 10.8 meters, the section is 1.1x1.1 meters, the buckling beam height is 1.4 meters, the weight of one prefabricated column is 28.5 tons, the length of the main beam is 0.6x1.4 meters, the buckling plate thickness is 0.18 meters, the weight is 0.6x (1.4-0.18) x (12-1.1) x 25=19.95 tons, the length of the secondary beam is 12 meters and 0.4x (1.0-0.18) x (12-0.6) x 25=9.35 tons. The found domestic large-scale hoisting equipment can hoist more than two layers of columns and frame main beams by the weight of the existing components, and the beams and columns have no method.
Disclosure of Invention
The utility model aims to provide a prefabricated concrete corrugated hollow column which is light in weight and excellent in integrity and earthquake resistance.
The aim of the utility model is realized by the following technical scheme:
a prefabricated assembled concrete corrugated hollow column comprises a metal corrugated pipe, a reinforcement cage connected to the outer peripheral side of the metal corrugated pipe and a concrete prefabricated area formed by casting in the reinforcement cage area; the reinforcement cage comprises a plurality of main reinforcements extending along the axial direction of the hollow column and stirrups connected between the main reinforcements; the metal corrugated pipe is fixedly connected with the main steel bars and/or the stirrups, a hollow cast-in-place area is formed in the concrete prefabrication area, and the metal corrugated pipe is arranged on the side wall of the cast-in-place area.
Compared with the prior art, the utility model has the advantages that:
the hollow cast-in-situ area is arranged in the utility model, so that the volume and the square quantity of precast concrete can be reduced, the weight of precast components is reduced, transportation and hoisting are convenient, and the hoisting cost and equipment leasing cost can be saved; the metal corrugated pipe is used as an inner template for disposable consumption, the metal corrugated pipe on the inner wall of the hollow cast-in-situ area is provided with transverse stiffening rigidity waves, concrete is cast into the hollow column after field assembly, the existing waves are beneficial to strengthening the adhesion of new and old concrete, the shearing bearing capacity of the interface of the hollow column is increased, the post-cast superposed hollow column has the same positive section strength and inclined section strength as the integral cast-in-situ reinforced concrete column, and the interface of the precast concrete and the core concrete is of a corrugated metal structure, so that the precast concrete and the core concrete can completely work together.
The utility model adopts an external mold and a hollow internal mold to prefabricate the hollow concrete column, takes a square hollow column as an example to prefabricate, and the column reinforcement amount according to the structural design, the stirrups should be configured into square external hoops and diamond hoops, so that the required space is reserved for the hollow internal mold plate, all main reinforcements and the stirrups are prefabricated and bound well, a prefabricated metal corrugated pipe is adopted as the hollow internal mold plate, binding or welding fixation should be carried out during the assembly of the two, the external mold plate and the end sealing plates at the two ends of the prefabricated common solid concrete column are matched, prefabrication can be carried out in factories, the hollow column is formed by only outer steel mold, the metal corrugated pipe is consumed once as the hollow internal mold plate, the complex technological process of the internal mold dismantling is saved, the production process of the hollow column is simplified, the production difficulty of the hollow column is reduced, the volume square amount of prefabricated concrete is reduced, the weight of prefabricated components is convenient to transport and hoist and the hoisting cost and the equipment leasing cost are saved.
Drawings
Fig. 1 is a schematic structural view of an embodiment of a prefabricated concrete corrugated hollow column according to the present utility model.
Fig. 2 is a schematic structural view of the reinforcement cage.
Fig. 3 is a schematic diagram of a connection structure of a reinforcement cage and a metal bellows.
Fig. 4 is a schematic view of the structure of the port closure plate.
Fig. 5 is a schematic structural view of the fixing plate.
Fig. 6 is an elevational side view of the reinforcement cage.
Fig. 7 is a schematic illustration of the connection of the reinforcement cage to the port closure plate.
Fig. 8 is a schematic view of the mounting state of the fixing plate.
Fig. 9 is a schematic perspective view of a prefabricated concrete corrugated hollow column.
FIG. 10 is an exemplary logistics center general floor plan.
Description of the reference numerals: 1 reinforcement cage, 1-1 main reinforcement, 1-2 stirrups, 1-3 pouring joints, 2 concrete prefabrication areas, 2-1 cast-in-situ areas, 3 port sealing plates, 3-1 fixing holes, 4 fixing plates and 5 metal corrugated pipes.
Detailed Description
The present utility model is described in detail below with reference to the drawings and examples of the specification:
fig. 1-9 show schematic views of embodiments of a prefabricated concrete corrugated hollow column provided by the utility model.
A prefabricated assembled concrete corrugated hollow column comprises a metal corrugated pipe 5, a reinforcement cage 1 connected to the outer peripheral side of the metal corrugated pipe 5 and a concrete prefabricated area 2 formed by casting in the area of the reinforcement cage 1;
the reinforcement cage 1 comprises a plurality of main reinforcements 1-1 extending along the axial direction of the hollow column and stirrups 1-2 connected between the main reinforcements 1-1;
the metal corrugated pipe 5 is fixedly connected with the main steel bars 1-1 and/or the stirrups 1-2, a hollow cast-in-situ area 2-1 is formed in the concrete prefabrication area 2, and the metal corrugated pipe 5 is arranged on the side wall of the cast-in-situ area 2-1.
The outer contour of the cross section of the concrete prefabricated area 2 is rectangular or circular.
The metal corrugated pipe 5 is in a circular shape, a box shape or a box shape formed by 4 sections of arcs.
The square hollow column adopts a round metal corrugated pipe 5, and the rectangular hollow column adopts a box-shaped metal corrugated pipe 5.
The stirrup 1-2 on the inner side of the reinforcement cage 1 adopts a diamond-shaped hooping mode and is tangent to the metal corrugated pipe 5.
The metal bellows 5 and the reinforcement cage 1 are fixed in a binding or welding mode.
And the two ends of the main reinforcing steel bar 1-1 extending out of the concrete prefabrication area 2 form pouring joints 1-3.
The pouring joint 1-3 is used for butt joint connection of two adjacent concrete hollow columns, the prefabricated length of the columns is the layer height minus the height of the control beam, and the part reserved for beam column joints is used for pouring concrete during assembly construction of the beam column joints on site.
According to the engineering background shown in fig. 10, the hollow column 1100x1100mm adopts a hollow inner diameter of 1000mm, the weight of a prefabricated finished product is 9.978 tons, the original 28.5 tons is reduced to 10 tons, and the requirement of on-site hoisting is met.
The die table, the concrete distribution equipment, the maintenance equipment and the pillar die of the PC component factory are utilized to produce, the length of the pillar die is adjustable for convenient application, the cost of die spreading is very low, the inner die metal corrugated pipe is not disassembled, the die is used as a one-time consumption die plate, the die plate is converted into stirrups, the production process of the hollow pillar is simplified, the production efficiency is improved, the precast concrete and post-cast concrete sections are combined reliably, the precast concrete and post-cast concrete are equivalent to work together, the weight of the precast components is reduced, the transportation and the hoisting are convenient, the weight of the crane is lightened, and the leasing cost of the hoisting equipment can be reduced.
A manufacturing method of a prefabricated concrete corrugated hollow column comprises the following steps:
s1, manufacturing a reinforcement cage 1 according to the shape of a hollow column, wherein a hollow area extending axially is reserved in the middle of the reinforcement cage 1;
s2, fixing the metal corrugated pipe 5 in a hollow area of the reinforcement cage 1;
s3, installing an outer template on the peripheral side of the reinforcement cage 1, installing port sealing plates 3 on two sides of the reinforcement cage 1, and performing concrete pouring, vibrating and curing between the outer template and the metal corrugated pipe 5;
s4, removing the outer die plate and the end sealing plate.
The reinforcement cage 1 includes a plurality of main reinforcement bars 1-1 extending in the axial direction of the hollow column and stirrups 1-2 connected between the main reinforcement bars 1-1,
the external dimension of the stirrup 1-2 is matched with the external contour of the metal corrugated pipe 5, and the stirrup is fixed by binding or welding during assembly.
When the reinforcement cage 1 is manufactured, the two ends of the main reinforcement 1-1 extending out of the reinforcement cage 1 form pouring joints 1-3, fixing holes 3-1 corresponding to the pouring joints 1-3 one by one are formed in the port sealing plates 3, and when the port sealing plates 3 are installed, the pouring joints 1-3 penetrate through the fixing holes 3-1.
The fixing holes 3-1 can ensure that the positions of the main reinforcing steel bars of the upper and lower hollow columns can be aligned.
The method is characterized by taking a square hollow column as an example for prefabricating, reserving a space for configuring an inner template according to the reinforcement quantity of the structural design column, arranging square outer hoops and diamond hoops in the hoops, reserving the needed space for the hollow inner template, prefabricating and binding all main reinforcements with the hoops, adopting a prefabricated metal corrugated pipe as the hollow inner template, matching the machined hoops with the outer diameter of the metal corrugated pipe in external dimensions, binding or welding and fixing during assembly of the two, arranging an outer template of the prefabricated concrete column and port sealing plates at two ends, carrying out concrete pouring, vibrating and curing (prefabricating by adopting the production process flow of a common concrete solid column) in a factory, removing only the outer steel mould after curing, converting the metal corrugated pipe inner template into a stressed hoop of the column without demoulding, carrying out hollow molding by the metal corrugated pipe template, wherein the hollow is a circular through hollow cavity without the hoops, and carrying out concrete pouring after the on site assembly.
Before packaging and transporting, the prefabricated concrete corrugated hollow column is firstly provided with a fixing plate 4, and the fixing plate 4 is the same as the port sealing plate 3 and is drilled according to the position and the size of the main reinforcing steel bar 1-1.
The fixing plate is a rectangular steel plate with the thickness of 6mm, the cross section size of the fixing plate is the same as that of the hollow column, the middle of the fixing plate is provided with a hole, and the width of the plate is 80mm;
during hoisting, the fixing plate 4 is sleeved on the top end of the main reinforcing steel bar 1-1 (the pouring joint 1-3) at the upper end of the prefabricated concrete corrugated hollow column, the main reinforcing steel bar 1-1 at the upper end stretches out of the reinforcing steel bar higher than the frame beam, the free end of the main reinforcing steel bar is longer, 4 positioning points are fixed by sleeving the fixing plate in a plate binding manner or a rubber sleeve manner, and the position of the reinforcing steel bar in the transportation hoisting process is ensured to be unchanged and is accurate when the reinforcing steel bar is in butt joint with the reinforcing steel bar at the lower end of the upper section column.
Claims (5)
1. The utility model provides a prefabricated assembled concrete ripple hollow column which characterized in that: the concrete prefabricated area (2) is formed by casting in the area of the steel reinforcement cage (1);
the reinforcement cage (1) comprises a plurality of main reinforcements (1-1) extending along the axial direction of the hollow column, and stirrups (1-2) connected between the main reinforcements (1-1);
the metal corrugated pipe (5) is fixedly connected with the main steel bar (1-1) and/or the stirrup (1-2), a hollow cast-in-place area (2-1) is formed in the concrete prefabrication area (2), and the metal corrugated pipe (5) is arranged on the side wall of the cast-in-place area (2-1).
2. The prefabricated concrete corrugated hollow column according to claim 1, wherein: the outer contour of the cross section of the concrete prefabricated area (2) is rectangular or circular.
3. The prefabricated concrete corrugated hollow column according to claim 2, wherein: the metal corrugated pipe (5) is round or box-shaped.
4. The prefabricated concrete corrugated hollow column according to claim 1, wherein: the metal corrugated pipe (5) and the steel reinforcement cage (1) are fixed in a binding or welding mode.
5. The prefabricated concrete corrugated hollow column according to claim 1, wherein: and the two ends of the main reinforcing steel bars (1-1) extending out of the concrete prefabrication area (2) form pouring joints (1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223504632.0U CN219175652U (en) | 2022-12-27 | 2022-12-27 | Prefabricated assembled concrete corrugated hollow column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223504632.0U CN219175652U (en) | 2022-12-27 | 2022-12-27 | Prefabricated assembled concrete corrugated hollow column |
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| Publication Number | Publication Date |
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| CN219175652U true CN219175652U (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223504632.0U Active CN219175652U (en) | 2022-12-27 | 2022-12-27 | Prefabricated assembled concrete corrugated hollow column |
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| Country | Link |
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| CN (1) | CN219175652U (en) |
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- 2022-12-27 CN CN202223504632.0U patent/CN219175652U/en active Active
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