Prestress support-free fast-assembly structure

Abstract

The utility model provides a pre-stress support-free fast-assembly structure which is composed of a bearing column, a main beam, a pre-stress secondary beam, an assembly component and a prefabricated laminated slab, the main beam is erected on a bearing cap, the pre-stress secondary beam is arranged on the main beam through the assembly component, and the laminated slab is laid on the pre-stress secondary beam and connected with the main beam; the main beam is provided with a notch, the prestressed secondary beam is provided with a boss, an anti-shearing steel plate of the assembly component is arranged in the boss and extends towards the prestressed secondary beam, an end plate and a tail plate are arranged on the lower side faces of the front end and the rear end of the anti-shearing steel plate, a U-shaped hanging bar is fixedly connected with the anti-shearing steel plate and arranged on the front portion of the anti-shearing steel plate, a reinforcing bar penetrates through the U-shaped hanging bar, and a bed mortar contact layer is arranged on the bottom face of the notch. According to the support-free fast-assembly technical structure system, supports and formworks on a construction site can be reduced, fast installation can be achieved, efficiency is improved, span support-free, safety and reliability can be achieved, manufacturing cost is reduced, the number of workers is reduced, assembly efficiency is improved, and the advantages of low price, high efficiency and high quality of an assembly type building are brought into play to a certain extent.

Description

Technical Field

[0001] This utility model belongs to the field of building technology, and in particular relates to a prestressed support-free quick-assembly structure. Background Technology

[0002] In the construction industry, traditional steel beam and concrete slab composite structures typically require formwork and temporary supports, resulting in complex and time-consuming construction that fails to meet current rapid construction requirements. Concrete structures suffer from numerous drawbacks, including high weight, low tensile strength, susceptibility to cracking, brittleness, poor impact resistance, long construction cycles requiring on-site pouring and curing, and significant susceptibility to environmental influences. Prefabricated buildings, on the other hand, require large quantities of steel, leading to high initial costs, transportation limitations, restricted design flexibility, high technical requirements, and strong supply chain dependence. Therefore, the development of prestressed, support-free, quick-assembly structures is necessary to save on-site construction costs and achieve cost reduction and efficiency improvement. Utility Model Content

[0003] This invention provides a prestressed, support-free, quick-assembly structure that can effectively solve the above-mentioned problems.

[0004] This utility model is implemented as follows:

[0005] A prestressed, support-free, quick-assembly structure includes load-bearing columns, main beams, prestressed secondary beams, assembly components, and precast composite slabs. The load-bearing columns have load-bearing caps at their upper ends. The main beams are mounted on adjacent load-bearing caps. The prestressed secondary beams are positioned between opposing main beams via assembly components. The precast composite slabs are laid on the prestressed secondary beams and connected to the main beams. The assembly components include shear plates, end plates, tail plates, U-shaped stirrups, reinforcing bars, and a grout contact layer. The main beams have notches, and the prestressed secondary beams have corresponding bosses at both ends. The shear plates are located within the bosses and extend into the prestressed secondary beams. The end plates are located on the lower side of the front end of the shear plates, and the tail plates are located on the lower side of the rear end of the shear plates. The open ends of the U-shaped stirrups are fixedly connected to the shear plates, and the U-shaped stirrups are located at the front of the shear plates. The reinforcing bars are inserted through the U-shaped stirrups. The grout contact layer is located on the bottom surface of the notch.

[0006] As a further improvement, the shear-resistant steel plate is provided in at least two pieces.

[0007] As a further improvement, the shear-resistant steel plate is provided with an end plate and a tail plate, or the end plate and tail plate are each provided as one piece, and the shear-resistant steel plate is connected to the end plate and tail plate respectively.

[0008] As a further improvement, the shear-resistant steel plate is provided with "U"-shaped lifting bars, and the steel bars are connected in series with each "U"-shaped lifting bar.

[0009] As a further improvement, the "U"-shaped suspension rod is connected to two shear-resistant steel plates, and at least one "U"-shaped suspension rod is provided on the shear-resistant steel plate.

[0010] As a further improvement, the upper end of the main beam is provided with a trapezoidal steel reinforcement beam, and the trapezoidal steel reinforcement beam has at least an inclined surface on its inner side.

[0011] As a further improvement, at least one prestressed secondary beam is provided between adjacent main beams, and an "I"-shaped stud is provided at the upper end of the prestressed secondary beam. The precast composite slab is provided with a through hole corresponding to the "I"-shaped stud, and the "I"-shaped stud is connected to the precast composite slab through the through hole.

[0012] The precast composite slabs are reinforced with transverse steel bars, which connect the precast composite slabs.

[0013] As a further improvement, the precast composite slab is provided with a negative bending bar one, which is symmetrically arranged with the prestressed secondary beam; a negative bending bar two is provided between the precast composite slab and the main beam.

[0014] As a further improvement, the length of the first negative bending bar is four times the width of the prestressed secondary beam, and the length of the second negative bending bar is four times the width of the main beam.

[0015] The beneficial effects of this utility model are as follows: The prestressed supportless quick-assembly structure is composed of load-bearing columns, main beams, prestressed secondary beams, assembly components, and precast composite slabs. The main beams are erected on adjacent load-bearing caps, and the prestressed secondary beams are set between the relative main beams through the assembly components. The precast composite slabs are laid on the prestressed secondary beams and connected to the main beams. The main beams have notches, and the prestressed secondary beams have bosses. The shear steel plates of the assembly components are set in the bosses and extend into the prestressed secondary beams. The end plates and tail plates are set on the lower sides of the front and rear ends of the shear steel plates. The open ends of the "U"-shaped hangers are fixedly connected to the shear steel plates, and the "U"-shaped hangers are set in the front of the shear steel plates. The reinforcing bars are inserted through the "U"-shaped hangers, and the grout contact layer is set on the bottom surface of the notch. This utility model's support-free, quick-assembly technology structure system can reduce on-site support and formwork, enabling rapid installation, improving efficiency, achieving support-free operation for conventional project spans, ensuring safety and reliability, reducing costs, decreasing labor requirements, and improving assembly efficiency, thus leveraging the advantages of prefabricated buildings in terms of low cost, high efficiency, and high quality to a certain extent. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a prestressed, support-free, quick-assembly structure according to an embodiment of the present invention;

[0018] Figure 2 This is a partial top view of an embodiment of a prestressed, support-free, quick-assembly structure of this utility model;

[0019] Figure 3 yes Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is another structural schematic diagram of the assembly component provided in an embodiment of a prestressed support-free quick-assembly structure of this utility model;

[0021] Figure 5 This is a transverse sectional view provided by an embodiment of a prestressed support-free quick-assembly structure of this utility model;

[0022] Figure 6 yes Figure 5 Enlarged structural diagram at point B;

[0023] Figure 7 This is a longitudinal sectional view provided by an embodiment of a prestressed support-free quick-assembly structure of this utility model;

[0024] Figure 8 yes Figure 7 Enlarged structural diagram at point C;

[0025] Figure 9 yes Figure 7 Enlarged structural diagram at point D;

[0026] Figure 10 This is an application diagram provided by an embodiment of a prestressed support-free quick-assembly structure of this utility model.

[0027] Figure label:

[0028] 1. Load-bearing column; 11. Load-bearing cap; 2. Main beam; 21. Notch; 22. Trapezoidal steel beam; 3. Prestressed secondary beam; 31. Boss; 32. I-beam stud; 4. Assembly component; 41. Shear steel plate; 42. End plate; 43. Tail plate; 44. U-shaped lifting bar; 45. Steel bar; 46. Grout contact layer; 5. Precast composite slab; 51. Perforation; 52. Transverse reinforcement; 53. Negative bending bar one; 54. Negative bending bar two. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0030] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In the description of this utility model, the terms "upper", "middle", "side", "side", "upper side", "end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Reference Figure 1-10 As shown, a prestressed, support-free, quick-assembly structure includes a load-bearing column 1, a main beam 2, prestressed secondary beams 3, an assembly assembly 4, and a precast composite slab 5. The load-bearing column 1 has a load-bearing cap 11 at its upper end. The main beam 2 is erected on adjacent load-bearing caps 11. The prestressed secondary beams 3 are positioned between opposite main beams 2 via the assembly assembly 4. The precast composite slab 5 is laid on the prestressed secondary beams 3 and connected to the main beams 2. The assembly assembly 4 includes a shear steel plate 41, an end plate 42, a tail plate 43, "U"-shaped lifting bars 44, reinforcing bars 45, and a grout contact layer 46. The main beam 2 is provided with a notch 21, and the prestressed secondary beam 3 is provided with protrusions 31 at both ends. The shear steel plate 41 is provided in the protrusions 31 and extends into the prestressed secondary beam 3. The end plate 42 is provided on the lower side of the front end of the shear steel plate 41, and the tail plate 43 is provided on the lower side of the rear end of the shear steel plate 41. The open end of the "U"-shaped hanger 44 is fixedly connected to the shear steel plate 41, and the "U"-shaped hanger 44 is provided at the front of the shear steel plate 41. The reinforcing bar 45 is provided through the "U"-shaped hanger 44. The grout contact layer 46 is provided on the bottom surface of the notch 21.

[0033] The supportless quick-assembly structure consists of a basic framework composed of load-bearing columns 1, main beams 2, prestressed secondary beams 3, and precast composite slabs 5. The main beams 2 and prestressed secondary beams 3 are quickly assembled through assembly components 4 to form the supporting structure of the precast composite slabs 5. The assembly components 4 form a high-strength supporting structure at both ends of the prestressed secondary beams 3 through shear steel plates 41, end plates 42, tail plates 43, "U"-shaped lifting bars 44, and steel bars 45. The grout contact layer 46 serves as a leveling layer for the notch 21 of the main beams 2, making the connection between the main beams 2 and the prestressed secondary beams 3 more stable and tight.

[0034] Furthermore, the shear-resistant steel plate 41 is provided in at least two pieces.

[0035] Two parallel shear-resistant steel plates 41 provide better shear support.

[0036] Furthermore, the shear-resistant steel plate 41 is provided with an end plate 42 and a tail plate 43, or each of the end plate 42 and the tail plate 43 is provided with one piece, and the shear-resistant steel plate 41 is connected to the end plate 42 and the tail plate 43 respectively.

[0037] The tail plate 43 and end plate 42 provide better support and shear resistance for the shear support plate, disperse the force between the shear steel plate 41 and the prestressed secondary beam 3, increase the interaction area between the shear steel plate 41 and the prestressed secondary beam 3, and improve the shear resistance.

[0038] Furthermore, the shear-resistant steel plate 41 is provided with "U"-shaped lifting bars 44, and the steel bar 45 is connected in series with each "U"-shaped lifting bar 44.

[0039] Each shear plate 41 is provided with a "U"-shaped hanger 44. The "U"-shaped hanger 44 plays a tensile role on the shear plate 41 to avoid mutual interference, and forms a whole through the steel bar 45.

[0040] Furthermore, the "U"-shaped suspension rod 44 is connected to two shear-resistant steel plates 41, and at least one "U"-shaped suspension rod 44 is provided on the shear-resistant steel plate 41.

[0041] The "U"-shaped suspension rod 44 is connected to the two shear steel plates 41, so that the shear steel plates 41 are interconnected and work together to provide support and shear resistance.

[0042] Furthermore, the upper end of the main beam 2 is provided with a trapezoidal steel beam 22, and the trapezoidal steel beam 22 has at least an inclined surface on its inner side.

[0043] The trapezoidal steel beam 22 forms a supporting slope on the inner side, thereby supporting the precast composite slab 5.

[0044] Furthermore, at least one prestressed secondary beam 3 is provided between adjacent main beams 2. The upper end of the prestressed secondary beam 3 is provided with an "I"-shaped stud 32. The precast composite slab 5 is provided with a through hole 51 corresponding to the "I"-shaped stud 32. The "I"-shaped stud 32 passes through the through hole 51 and is connected to the precast composite slab 5.

[0045] The I-beam stud 32 can improve the connection strength between the prestressed secondary beam 3 and the precast composite slab 5.

[0046] Furthermore, the precast composite slab 5 is provided with transverse reinforcing bars 52, which connect each precast composite slab 5.

[0047] The transverse reinforcing bars 52 make the precast composite slabs 5 form a whole, enhancing the supporting function.

[0048] Furthermore, the precast composite slab 5 is provided with a negative bending bar 53, which is symmetrically arranged with the prestressed secondary beam 3; a negative bending bar 54 is provided between the precast composite slab 5 and the main beam 2.

[0049] Negative bending reinforcement 1 (53) and negative bending reinforcement 2 (54) can provide good tensile resistance at the connection support point, preventing deformation or breakage.

[0050] Furthermore, the length of the first negative bending bar 53 is four times the width of the prestressed secondary beam 3, and the length of the second negative bending bar 54 is four times the width of the main beam 2.

[0051] The length setting ensures tensile strength.

[0052] During construction, the load-bearing column 1 is cast-in-place. The first step is to pour the load-bearing column 1 and the load-bearing cap 11. When the column reaches 100% strength, the second step is to hoist the main beam 2 on-site and place it on the load-bearing cap 11. The third step is to hoist the prestressed secondary beam 3 and place it at the notch 21 of the main beam 2. The fourth step is to hoist the precast composite slab 5. The fifth step is to place the transverse reinforcing bars 52. The sixth step is to pour the cast-in-place layer. This utility model of a support-free, quick-assembly technology structure system can achieve support-free construction for conventional project spans, ensuring safety and reliability, reducing costs and labor requirements, and achieving rapid assembly. To a certain extent, it leverages the advantages of prefabricated buildings—low cost, high efficiency, and high quality—saving steel compared to steel structures, and saving formwork and supports compared to concrete structures. It also utilizes extensive mechanization, resulting in reduced labor costs.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A prestressed free-standing quick-mounting structure, characterized in that, The utility model provides a kind of prefabricated composite slab, including load-bearing column, main beam, prestressed secondary beam, assembly component and prefabricated composite slab, the load-bearing column upper end is equipped with load-bearing cap, the main beam is erected on adjacent load-bearing cap, the prestressed secondary beam is equipped between opposite main beam by assembly component, the prefabricated composite slab is laid on prestressed secondary beam and is connected with main beam;The assembly component is equipped with shear steel plate, end plate, tail plate, "U" type lifting bar, reinforcing bar and seat mortar contact layer, the main beam is equipped with notch, prestressed secondary beam both ends are equipped with boss in correspondence, the shear steel plate is equipped in boss and extends to prestressed secondary beam, the end plate is equipped at the lower side of shear steel plate front end, the tail plate is equipped at the lower side of shear steel plate rear end, the "U" type lifting bar open end is fixedly connected with shear steel plate, and "U" type lifting bar is equipped in shear steel plate front part, the reinforcing bar is equipped in "U" type lifting bar, and the seat mortar contact layer is equipped in notch bottom surface.

2. The pre-stressed free-standing quick-assembly structure according to claim 1, characterized in that, The shear steel plate is equipped with at least two pieces.

3. The pre-stressed free-standing quick-assembly structure according to claim 1 or 2, characterized in that, The shear steel plate is equipped with end plate and tail plate respectively, or the end plate and tail plate are equipped with a piece respectively, and the shear steel plate is connected with end plate and tail plate respectively.

4. The pre-stressed free-standing quick-assembly structure according to claim 1 or 2, characterized in that, The shear steel plate is equipped with "U" type lifting bar respectively, and the reinforcing bar is connected with each "U" type lifting bar.

5. The pre-stressed free-standing quick-assembly structure according to claim 1, wherein, The "U" type lifting bar is connected with two shear steel plates, and at least one "U" type lifting bar is arranged on the shear steel plate.

6. The pre-stressed free-standing quick-assembly structure according to claim 1, wherein, The upper end of the main beam is equipped with trapezoidal reinforced beam, and the inner side of the trapezoidal reinforced beam is inclined.

7. The pre-stressed free-standing quick-assembly structure according to claim 1 or 6, characterized in that, At least one prestressed secondary beam is arranged between adjacent main beams, the upper end of the prestressed secondary beam is equipped with a "H" shaped bolt, the prefabricated composite slab is equipped with a perforation corresponding to the "H" shaped bolt, and the "H" shaped bolt is connected with the prefabricated composite slab by penetrating the perforation.

8. The pre-stressed free-standing quick-assembly structure according to claim 1, wherein, The prefabricated composite slab is laid with transverse reinforcement, and the transverse reinforcement connects each prefabricated composite slab.

9. The pre-stressed free-standing quick-assembly structure according to claim 1 or 8, characterized in that, The prefabricated composite slab is equipped with negative bending bar one, and the negative bending bar one is arranged in axial symmetry with the prestressed secondary beam.

10. The pre-stressed free-standing quick-assembly structure according to claim 9, wherein, The length of the negative bending bar one is four times the width of the prestressed secondary beam, and the length of the negative bending bar two is four times the width of the main beam.

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