Fabricated concrete prefabricated reinforcement cage cavity column
By using enlarged head structure stirrup mesh connection in precast concrete SW columns, the problems of high manufacturing cost and complex construction of traditional precast concrete SW columns are solved, achieving low-cost and high-efficiency construction results.
Patent Information
- Application Number
- CN202520097984.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Traditional precast concrete SW columns have problems such as high manufacturing cost, complex construction and long construction period due to the precast outer high-performance concrete cavity. In particular, the internal tie bars increase the amount of steel bars used and the construction process is complicated, while the external wooden squares or steel pipe clamps increase the construction cost and construction period.
The design employs a steel cage, which includes longitudinal reinforcement bars and multiple layers of stirrup mesh. The connecting stirrups of the stirrup mesh have enlarged head structures at both ends. These enlarged head structures are embedded in the column shell and connected by welding or binding to form a tight mesh structure, thereby improving the anchorage and connection performance between the steel cage and the column shell.
It simplified the construction process, reduced manufacturing costs, improved construction efficiency, reduced construction cracks, ensured the integrity and connection performance during hoisting and transportation, and shortened the construction cycle.
Smart Images
Figure CN223724013U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of fabricated building engineering, in particular to a fabricated concrete prefabricated reinforcement cage cavity column. BACKGROUND
[0002] The fabricated reinforced concrete structure system has the advantages of high efficiency, economy, environmental protection and the like, and is widely applied to the construction of industrial and civil buildings. The SW (Sandwich) structure refers to a prefabricated component composed of concrete and reinforcement as a formwork, and a fabricated concrete laminated slab type component formed by one-time pouring of concrete on site. The fabricated SW structure is a fabricated concrete structure obtained by different material and sequential lamination construction, and main products include fabricated SW columns, fabricated SW floors and fabricated SW beams and the like structural components. The prefabricated cavity high-performance concrete column shell of the fabricated concrete prefabricated SW column is made of light-weight high-strength high-performance concrete material, so that the prefabricated SW column has the technical advantages of light weight in hoisting and transportation, high structural integrity, rapid and convenient construction, and installation without formwork. The internal cast-in-place ordinary concrete of the cavity prefabricated SW column after on-site installation has high connection integrity of beams, columns and beam plates, and the node performance is consistent with that of the cast-in-place concrete structure. Therefore, the fabricated concrete prefabricated SW column is a kind of fabricated concrete prefabricated column product with strong market competitiveness.
[0003] The high-performance concrete material is a kind of cement-based concrete material, and has many advantages such as energy saving and environmental protection, light weight and high strength, good fluidity and easy construction, and excellent durability. The high-performance concrete material is very suitable for building components or building structures with high durability requirements, high hoisting and transportation requirements, low-carbon energy-saving and environmental protection requirements, and high construction period requirements in civil engineering. Therefore, the high-performance concrete is very suitable for being used as the prefabricated outer layer of the fabricated concrete prefabricated SW column.
[0004] However, the prefabricated outer layer of the high-performance concrete cavity of the fabricated concrete prefabricated SW column needs to meet the basic requirements of lightness and thinness and sealing. Therefore, in order to avoid the problems of mold expansion, slurry leakage and cracking of the high-performance concrete cavity during pouring of the inner core ordinary concrete, the traditional solution is to additionally set internal tension reinforcement or externally set wooden square or steel pipe hoop. The internal tension reinforcement not only increases the amount of reinforcement and the cost, but also causes the space of the internal reinforcement cage to be too complicated, the ordinary concrete pouring and vibration rod to be difficult to insert, and the column concrete to be non-dense due to uneven sand and gravel. The construction technology of the externally set wooden square or steel pipe hoop increases the construction measure cost, increases the construction technology and construction organization difficulty, and prolongs the construction period. UTILITY MODEL CONTENTS
[0005] The utility model provides a kind of assembled concrete prefabricated reinforcement cage cavity column to solve the problems of high manufacturing cost, complex construction and long construction period of traditional reinforcement cage cavity column.
[0006] The utility model discloses the following technical solutions:
[0007] A kind of assembled concrete prefabricated reinforcement cage cavity column, characterized in that, comprising:
[0008] Column shell, the central part is formed with hollow cavity;
[0009] Reinforcement cage, which is located in the hollow cavity, the reinforcement cage includes column longitudinal reinforcement and multiple layers of stirrup mesh arranged on the column longitudinal reinforcement in the longitudinal direction, each stirrup mesh includes a plurality of connecting stirrups, the connecting stirrups are arranged in a mesh structure by interlacing vertically and horizontally, the connecting stirrups include straight steel bars and enlarged head structures provided at both ends of the straight steel bars, the diameter of the enlarged head structures is greater than the diameter of the straight steel bars, and the enlarged head structures of each stirrup mesh are embedded in the column shell.
[0010] Further, the connecting positions of the plurality of connecting stirrups that interlace vertically and horizontally are connected by binding or welding.
[0011] Further, the enlarged head structures and the straight steel bars are an integral molding structure.
[0012] Further, the enlarged head structures are welded at the ends of the straight steel bars by welding.
[0013] Further, the cross-sectional shape of the enlarged head structures is one of rectangular, circular or polygonal.
[0014] Further, the straight steel bars are ribbed straight steel bars.
[0015] Further, each layer of stirrup mesh is arranged in parallel and spaced apart.
[0016] Further, the column longitudinal reinforcement and the stirrup mesh are fixedly connected by welding.
[0017] Further, the column longitudinal reinforcement and the two connecting stirrups are tightly attached at the overlapping portion.
[0018] Further, the column longitudinal reinforcement extends from the end face of at least one end of the column shell to the outside of the column shell in the height direction of the hollow cavity.
[0019] Compared with the prior art, the utility model has at least the following beneficial effects:
[0020] The utility model discloses a reinforcing cage is equipped with multilayer stirrup mesh along the longitudinal direction, and the connecting stirrup of each layer of stirrup mesh adopts the enlarged head structure and is connected with the column shell, and the anchoring performance between the reinforcing cage and the column shell is increased by the enlarged head structure at both ends of the connecting stirrup, which can guarantee the integrity of the column shell during prefabrication, transportation and installation process, and also can bear the mold expansion force when pouring the inner core ordinary concrete. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is the schematic diagram of the prefabricated reinforced concrete cavity column of the utility model embodiment;
[0022] Figure 2 is the schematic diagram of the reinforcing cage of the utility model embodiment;
[0023] Figure 3 is the schematic diagram of the stirrup mesh of the utility model embodiment;
[0024] Figure 4 is Figure 1 the sectional view of the structure;
[0025] In the drawing: 1, column shell;2, reinforcing cage;21, column longitudinal reinforcement;22, stirrup mesh;221, connecting stirrup;2210, straight steel bar;2211, enlarged head structure. DETAILED DESCRIPTION
[0026] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and fully convey the inventive aspects of example implementations to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and descriptions of the same elements will not be repeated.
[0027] The words expressing position and direction described in the utility model are all explained by taking the drawings as examples, but can also be changed according to needs, and the changes made are all included in the protection scope of the utility model.
[0028] As Figures 1 to 4The utility model provides a kind of prefabricated reinforced concrete cavity column of assembly type, including
[0029] Column shell 1, the central part is formed with hollow cavity;
[0030] Reinforced cage 2, it is located in the hollow cavity, the reinforced cage 2 includes column longitudinal reinforcement 21 and multiple layers of stirrup mesh 22 being arranged on the column longitudinal reinforcement 21 along longitudinal direction, each stirrup mesh 22 includes several connecting stirrups 221, several connecting stirrups 221 are arranged in a crisscross pattern in a mesh structure, the connecting stirrup 221 includes straight steel bar 2210 and enlarged head structure 2211 arranged at both ends of straight steel bar 2210, the diameter of the enlarged head structure 2211 is greater than the diameter of straight steel bar 2210, and the enlarged head structure 2211 of each stirrup mesh 22 is embedded in the column shell 1.
[0031] In the embodiment, the reinforced cage 2 is provided with multiple layers of stirrup mesh 22 along the longitudinal direction, the connecting stirrup 221 of each layer of stirrup mesh 22 is connected to the column shell 1 by using the enlarged head structure 2211, the anchoring performance between the reinforced cage 2 and the column shell 1 is increased by the enlarged head structure 2211 at both ends of the connecting stirrup 221, the integrity of the column shell 1 during prefabrication, transportation and installation can be ensured, and the rising mold force during pouring of the ordinary concrete core can also be borne. Compared with the traditional stirrup form, the straight steel bar 2210 with the enlarged head structure 2211 at both ends is assembled to form a new stirrup mesh 22, which has a simple structure, low manufacturing cost and convenient construction, changes the bonding form of the stirrup mesh 22 inside the column shell 1 without changing the effect of the stirrup shear bearing capacity of the column body, the connecting area with the column shell 1 is increased by the enlarged head structure 2211, and the connecting performance between the embedded reinforced cage 2 and the column shell 1 is greatly improved. Meanwhile, the multiple layers of stirrup mesh 22 are arranged on the column longitudinal reinforcement 21, and the arrangement of the relatively dense stirrup mesh 22 makes the connection between the reinforced cage 2 and the column shell 1 more compact, and the stress is also greatly dispersed, so that the column shell 1 is not prone to cracks during hoisting, transportation and splicing construction processes.
[0032] As a preferred embodiment, the connecting position of the crisscrossed connecting stirrup 221 is connected by binding or welding.
[0033] In the embodiment, the mechanized cage forming equipment can be used to replace manual binding to form a cage, the column longitudinal reinforcement 21 and the stirrup mesh 22 are positioned by special tooling, and the electric binding equipment is assisted, so that the cage can be quickly formed, the finished product has good quality, high precision and high production efficiency. Alternatively, in other embodiments, the connecting position of the crisscrossed connecting stirrup 221 is connected by welding, and the welding method can greatly improve the structural durability and bearing capacity of the stirrup mesh 22.
[0034] As a preferred implementation, the enlarged head structure 2211 is integrally formed with the straight steel bars 2210. This facilitates the production of the connecting stirrups 221 and reduces production costs.
[0035] As a preferred implementation, the enlarged head structure 2211 is welded to the end of the straight steel bars 2210. The enlarged head structure 2211 and the straight steel bars 2210 are separately arranged, which facilitates separate processing according to actual conditions and has high flexibility. Meanwhile, the welding connection has high connection strength and improves the structural strength.
[0036] As a preferred implementation, the cross-sectional shape of the enlarged head structure 2211 is one of a rectangle, a circle, or a polygon.
[0037] In this embodiment, the cross-sectional shape of the enlarged head structure 2211 is one of a rectangle, a circle, or a polygon, which can increase the contact area between the stirrup mesh 22 and the column shell 1, thereby changing the bonding form of the stirrup mesh 22 and the column shell 1 without changing the effect of the shear bearing capacity of the column body, thereby greatly improving the connection performance between the embedded steel cage 2 and the column shell 1.
[0038] As a preferred implementation, the straight steel bars 2210 are ribbed straight steel bars 2210. This can enhance the overall structural strength of the stirrup mesh 22 and further improve the bearing capacity of the stirrup mesh 22.
[0039] As a preferred implementation, the stirrup meshes 22 are arranged in parallel and at intervals. This can ensure that the strength of each part of the pile steel cage 2 is balanced, so that the force at each position of the steel cage 2 is reasonable and balanced.
[0040] As a preferred implementation, the column longitudinal bars 21 and the stirrup meshes 22 are fixedly connected in a welding manner. The welding manner can ensure the connection strength between the column longitudinal bars 21 and the stirrup meshes 22. Of course, in other embodiments, the column longitudinal bars 21 and the stirrup meshes 22 can also be fixedly connected in a binding manner.
[0041] As a preferred implementation, the column longitudinal bars 21 and the two connecting stirrups 221 are tightly attached at the lap joint. This can further improve the connection performance between the stirrup mesh 22 and the column longitudinal bars 21 and improve the structural strength of the steel cage 2.
[0042] As a preferred implementation, the column longitudinal bars 21 extend from the end face of at least one end of the column shell 1 to the outside of the column shell 1 along the height direction of the hollow cavity.
[0043] In this embodiment, the part of the column longitudinal reinforcement 21 exposed to the end surface of the column shell 1 is connected to the node connecting the prefabricated column and the previous beam column, which can avoid the misalignment of the connecting steel bars in the traditional fabricated structure connected by the grouting sleeve, and the inability to connect.
[0044] It should be noted that the steel reinforcement cage 2 is placed in the hollow cavity of the column shell 1 before the column shell 1 is hardened. By placing the steel reinforcement cage 2 in the hollow cavity of the unhardened column shell 1, the enlarged head structure 2211 of the stirrup mesh 22 can be embedded in the interior of the unhardened column shell 1, achieving firm connection of the steel reinforcement cage 2 and the column shell 1, avoiding the traditional method of connecting the embedded part in the column shell 1 and the steel reinforcement cage 2 by welding, which eliminates the need for embedding welding parts in high-performance concrete, then retaining the welding hole, and finally welding after the splicing is completed, greatly improving the construction efficiency and shortening the construction period. Compared with the traditional method, the connection points are limited, and the connection points are concentrated due to the limited connection points, which can easily cause the high-performance concrete shell to crack near the welding point. The utility model improves the anchoring performance of the steel reinforcement cage 2 and the column shell 1 by connecting the enlarged head structure 2211 of the stirrup mesh 22 and the column shell 1, so that the overall structure is high in integrity, and the cracking of the column shell 1 is reduced.
[0045] The manufacturing steps of the high-performance concrete cavity column of the utility model are as follows:
[0046] S1: Preparing the steel reinforcement cage 2, including cutting, positioning and fixing of the column longitudinal reinforcement 21 and the stirrup mesh 22;
[0047] S2: Pouring the high-performance concrete column shell 1, placing the steel reinforcement cage 2 into the unhardened high-performance concrete column shell 1, and tightly connecting the steel reinforcement cage 2 and the high-performance concrete column shell 1 through the enlarged head structure 2211 of the connecting stirrup 221 end;
[0048] S3: After the high-performance concrete reaches the demolding strength, demolding construction is carried out;
[0049] S4: Labeling, stacking, packaging protection and product qualification inspection of the completed high-performance concrete cavity column shell 1;
[0050] S5: Transporting out of the factory to the construction site for assembly construction.
[0051] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model, and all these changes should belong to the protection scope of the utility model claim.
Claims
1. A fabricated concrete precast reinforcement cage cavity column, characterized by, The utility model relates to a reinforced concrete column, which comprises: a column shell (1) with a hollow cavity formed in the central part; a steel cage (2) located in the hollow cavity, the steel cage (2) comprising column longitudinal reinforcement (21) and a plurality of layers of stirrup mesh (22) arranged along the longitudinal direction on the column longitudinal reinforcement (21), each of the stirrup meshes (22) comprising a plurality of connecting stirrups (221) arranged in a mesh structure in a longitudinal and transverse manner, the connecting stirrups (221) comprising straight steel bars (2210) and enlarged head structures (2211) arranged at both ends of the straight steel bars (2210), the diameter of the enlarged head structures (2211) being larger than that of the straight steel bars (2210), and the enlarged head structures (2211) of each of the stirrup meshes (22) being embedded in the column shell (1).
2. The fabricated concrete precast cage cavity column according to claim 1, characterized in that, The connecting stirrups (221) are connected in a binding or welding manner at the longitudinal and transverse intersection positions.
3. The fabricated concrete precast cage cavity column according to claim 1, characterized in that, The enlarged head structures (2211) and the straight steel bars (2210) are in an integral molding structure.
4. The fabricated concrete precast cage cavity column according to claim 1, characterized in that, The enlarged head structures (2211) are welded on the ends of the straight steel bars (2210) in a welding manner.
5. The fabricated concrete precast cage cavity column according to claim 1, characterized in that, The cross-sectional shape of the enlarged head structures (2211) is one of rectangular, circular or polygonal.
6. The fabricated concrete precast cage cavity column according to claim 1, characterized in that, The straight steel bars (2210) are ribbed straight steel bars (2210).
7. The fabricated concrete precast cage cavity column according to claim 1, characterized by, Each layer of the stirrup meshes (22) is arranged in parallel and spaced apart.
8. The fabricated concrete precast cage cavity column according to claim 1, characterized in that, The column longitudinal reinforcement (21) and the stirrup meshes (22) are fixedly connected in a welding manner.
9. The fabricated concrete precast cage cavity column according to claim 1, characterized by, The column longitudinal reinforcement (21) and the two connecting stirrups (221) are tightly attached at the overlapping position.
10. The fabricated concrete precast cage cavity column according to claim 1, characterized in that, The column longitudinal reinforcement (21) extends from the end face of at least one end of the column shell (1) to the outside of the column shell (1) along the height direction of the hollow cavity.