Formwork-free and support-free beam and plate structure system wrapping steel beam and laminated slab

Abstract

The utility model provides a mould-free and support-free beam and plate structural system coated with steel beams and laminated slabs, which adopts a structural system comprising support columns, concrete beams, coated steel secondary beams and laminated slabs, the concrete beams are arranged on the support columns, the coated steel secondary beams are connected with the concrete beams, and the laminated slabs are laid on the coated steel secondary beams; a cladding steel embedded part is arranged on the concrete beam and provided with a front steel plate, a rear steel plate, a connecting piece and a connecting steel plate, the front steel plate and the rear steel plate are embedded in the front side and the rear side of the concrete beam respectively, the connecting piece is fixedly connected with the front steel plate and the rear steel plate, and the connecting steel plate is vertically arranged at the front end of the front steel plate. And the connecting steel plates are connected with the coated steel secondary beams through bolts. The structure system can reduce supports and templates on a construction site, can be quickly mounted, improves efficiency, can realize span support-free, safe and reliable effects, reduces the manufacturing cost, reduces the number of workers, improves the splicing efficiency, and exerts the advantages of low price, high efficiency and high quality of a fabricated building to a certain extent.

Description

Technical Field

[0001] This utility model belongs to the field of building technology, and in particular relates to a beam and slab structure system that requires no formwork or support and is covered with steel beams and composite slabs. Background Technology

[0002] Currently, most buildings rely on composite slabs and precast beams for full-span scaffolding, typically requiring formwork and temporary supports. This approach is neither cost-effective in terms of formwork nor supports, resulting in high costs, complex construction, and long construction periods. 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 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, there is a need to develop new formwork- and support-free beam and slab structural systems to save on on-site construction costs, thereby achieving cost reduction and efficiency improvement. Utility Model Content

[0003] This invention provides a beam-slab structure system that covers steel beams and composite slabs without formwork or support, which can effectively solve the above-mentioned problems.

[0004] This utility model is implemented as follows:

[0005] A formwork- and support-free beam-slab structure system consisting of clad steel beams and composite slabs includes supporting columns, concrete beams, clad steel secondary beams, and composite slabs. The concrete beams are connected to the upper ends of each supporting column, the clad steel secondary beams are connected to the concrete beams on both sides, and the composite slabs are laid on the clad steel secondary beams and connected to the concrete beams. The concrete beams are provided with pre-embedded clad steel components at intervals, which are connected to the clad steel secondary beams. Each pre-embedded clad steel component includes a front steel plate, a rear steel plate, a connector, and a connecting steel plate. The front and rear steel plates are respectively pre-embedded on the front and rear sides of the concrete beams. The connector is fixedly connected to the front and rear steel plates. The connecting steel plate is vertically positioned at the front end of the front steel plate, and the connecting steel plate is bolted to the clad steel secondary beams.

[0006] As a further improvement, the connector is a shear-resistant steel bar or a shear-resistant steel plate, wherein the shear-resistant steel bar is connected at least around the perimeter and center of the front and rear steel plates, and the shear-resistant steel plate is vertically disposed between the front and rear steel plates.

[0007] As a further improvement, at least one covered steel secondary beam is provided between adjacent concrete beams, the top of the covered steel secondary beam is provided with shear studs, the composite plate is provided with connecting holes corresponding to the shear studs, and the shear studs are connected to the composite plate through the connecting holes.

[0008] As a further improvement, the encased steel secondary beam is provided with I-beams, "U"-shaped stirrups, reinforcing bars, side plates, and concrete. The I-beams have connectors at both ends, which are connected to connecting steel plates. The side plates are located between the connectors in the grooves on both sides of the I-beams. The "U"-shaped stirrups are spaced apart within the I-beams between the connectors and are locked to the I-beams with nuts. The reinforcing bars are connected to each "U"-shaped stirrup. The concrete fills the grooves in the I-beams between the side plates.

[0009] As a further improvement, the inner side of the concrete beam is provided with a corbel, and the composite slab is supported on the corbel.

[0010] As a further improvement, transverse reinforcing bars are laid above and below the steel pipe truss of the composite slab, and the transverse reinforcing bars connect each composite slab.

[0011] As a further improvement, the composite slab is provided with a negative moment reinforcement bar one, which is symmetrically arranged with the covered steel secondary beam; a negative moment reinforcement bar two is provided between the composite slab and the concrete beam.

[0012] As a further improvement, the length of the first negative moment reinforcement bar is four times the width of the covered steel secondary beam, and the length of the second negative moment reinforcement bar is four times the width of the concrete beam.

[0013] As a further improvement, the thickness of the cow leg is 50mm and the height is 100mm.

[0014] The beneficial effects of this utility model are as follows: This application adopts a structural system of supporting columns, concrete beams, covered steel secondary beams, and composite slabs. The concrete beams are connected to the upper ends of each supporting column, the covered steel secondary beams are connected to the concrete beams on both sides, and the composite slabs are laid on the covered steel secondary beams and connected to the concrete beams. The concrete beams are provided with pre-embedded steel components connected to the covered steel secondary beams at intervals. Each pre-embedded steel component includes a front steel plate, a rear steel plate, a connector, and a connecting steel plate. The front and rear steel plates are respectively pre-embedded on the front and rear sides of the concrete beam. The connector is fixedly connected to the front and rear steel plates, and the connecting steel plate is vertically positioned at the front end of the front steel plate. The connecting steel plate is bolted to the covered steel secondary beam. This structural system can reduce on-site support and formwork, allows for rapid installation, improves efficiency, enables support-free construction of conventional project spans, is safe and reliable, reduces costs, reduces labor, and improves 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

[0015] 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.

[0016] Figure 1 This is an overall structural schematic diagram of an embodiment of a beam and slab structure system of steel beams and composite slabs without formwork or support according to this utility model;

[0017] Figure 2 yes Figure 1 A transverse sectional view in the middle;

[0018] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0020] Figure 5 yes Figure 1 Longitudinal sectional view in the middle;

[0021] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0022] Figure 7 yes Figure 5 Enlarged diagram of point D in the middle.

[0023] Figure label:

[0024] Support column 1; Concrete beam 2; Corbel 21; Covered steel secondary beam 3; Shear stud 31; I-beam 32; "U" shaped stirrup 33; Reinforcing bar 34; Edge plate 35; Concrete 36; Connector 37; Composite slab 4; Connecting hole 41; Transverse reinforcement 42; Negative moment reinforcement 1 43; Negative moment reinforcement 2 44; Covered steel embedded part 5; Front steel plate 51; Rear steel plate 52; Connector 53; Connecting steel plate 54. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Reference Figure 1-7 As shown, a beam-slab structure system with clad steel beams and composite slabs that requires no formwork or support includes support columns 1, concrete beams 2, clad steel secondary beams 3, and composite slabs 4. The concrete beams 2 are connected to the upper ends of each support column 1. The clad steel secondary beams 3 are connected to the concrete beams 2 on both sides. The composite slabs 4 are laid on the clad steel secondary beams 3 and connected to the concrete beams 2. The concrete beams 2 are provided with clad steel embedded parts 5 at intervals that are connected to the clad steel secondary beams 3. The clad steel embedded parts 5 are provided with a front steel plate 51, a rear steel plate 52, a connector 53, and a connecting steel plate 54. The front steel plate 51 and the rear steel plate 52 are respectively embedded on the front and rear sides of the concrete beams 2. The connector 53 is fixedly connected to the front steel plate 51 and the rear steel plate 52. The connecting steel plate 54 is vertically arranged at the front end of the front steel plate 51. The connecting steel plate 54 is connected to the clad steel secondary beams 3 by bolts.

[0029] First, a basic frame is formed by supporting columns 1, concrete beams 2, and covered steel secondary beams 3. The covered steel secondary beams 3 are connected to the concrete beams 2 by bolt locking, eliminating the need for on-site formwork. Then, composite slabs 4 are laid on the covered steel secondary beams 3, reducing the support structure. Finally, the surface of the composite slabs 4 is poured. This process is safe, reliable, fast, and cost-effective.

[0030] Furthermore, the connector 53 is a shear-resistant steel bar or a shear-resistant steel plate. The shear-resistant steel bar is connected at least around the perimeter and center of the front steel plate 51 and the rear steel plate 52, and the shear-resistant steel plate is vertically arranged between the front steel plate 51 and the rear steel plate 52.

[0031] The connector 53 mainly serves to connect the front steel plate 51 and the rear steel plate 52. The distribution of shear reinforcement around the perimeter and the vertical setting of the shear steel plate ensure that it does not affect the pouring of the concrete beam 2. Overall, it provides support for the connecting steel plate 54.

[0032] Furthermore, at least one covered steel secondary beam 3 is provided between adjacent concrete beams 2, and the top of the covered steel secondary beam 3 is provided with shear studs 31. The composite plate 4 is provided with connecting holes 41 corresponding to the shear studs 31, and the shear studs 31 pass through the connecting holes 41 and are connected to the composite plate 4.

[0033] Shear studs 31 enhance the connection strength between the composite slab 4 and the covered steel secondary beam 3.

[0034] Furthermore, the encased steel secondary beam 3 is provided with I-beams 32, "U"-shaped stirrups 33, reinforcing bars 34, side plates 35, and concrete 36. The I-beams 32 are provided with connectors 37 at both ends, and the connectors 37 are connected to the connecting steel plates 54. The side plates 35 are located between the connectors 37 in the grooves on both sides of the I-beams 32. The "U"-shaped stirrups 33 are distributed at intervals in the I-beams 32 between the connectors 37. The "U"-shaped stirrups 33 are locked to the I-beams 32 with nuts. The reinforcing bars 34 are connected to each "U"-shaped stirrup 33. The concrete 36 fills the grooves of the I-beams 32 between the side plates 35.

[0035] The steel secondary beam 3 is the main supporting structure of the composite slab 4. It adopts the structural form of I-beam 32, "U" shaped stirrup 33, steel bar 34, edge plate 35 and concrete 36 to improve the structural strength of the steel secondary beam 3.

[0036] Furthermore, the inner side of the concrete beam 2 is provided with a corbel 21, and the composite plate 4 is supported on the corbel 21.

[0037] Increase the support strength between the edge of the composite slab 4 and the concrete beam 2 to improve the overall structural stability.

[0038] Furthermore, transverse reinforcing bars 42 are laid on the upper and lower sides of the steel pipe truss of the composite plate 4, and the transverse reinforcing bars 42 connect each composite plate 4.

[0039] The 42mm transverse reinforcement enhances the integrity between the connecting plates and increases the overall strength.

[0040] Furthermore, the composite slab 4 is provided with a negative moment reinforcement bar 43, which is symmetrically arranged with the steel secondary beam 3; a second negative moment reinforcement bar 44 is provided between the composite slab 4 and the concrete beam 2.

[0041] Negative moment reinforcement 1.43 and negative moment reinforcement 2.44 improve the bending and tensile strength between support points and connection points.

[0042] Furthermore, the length of the negative moment reinforcement 43 is four times the width of the steel secondary beam 3, and the length of the negative moment reinforcement 44 is four times the width of the concrete beam 2.

[0043] The length setting ensures the bending resistance of the negative moment reinforcement.

[0044] Furthermore, the thickness of the cow leg 21 is 50mm and the height is 100mm.

[0045] During construction, concrete beam 2 is a cast-in-place (or precast) structure. The first step is to erect the formwork for concrete beam 2, while simultaneously embedding steel embedded parts 5 within it. Once concrete beam 2 reaches 100% strength, the second step involves hoisting and installing the embedded steel secondary beam 3 on-site. After installation, the support-free composite slab 4 is hoisted. The third step involves laying out other structures and pouring the cast-in-place layer. This formwork-free, support-free integrated beam and slab structure system allows for support-free spans in conventional projects, ensuring safety and reliability, reducing costs and labor requirements, and achieving rapid assembly. It leverages the advantages of prefabricated buildings—low cost, high efficiency, and high quality—to a certain extent. Compared to steel structures, it saves on steel consumption; compared to concrete structures, it saves on formwork and supports; and it utilizes extensive mechanization, resulting in reduced labor costs.

[0046] 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 form-free and support-free beam and slab structure system of a steel beam and a laminated slab, characterized in that, The system includes supporting columns, concrete beams, covered steel secondary beams, and composite slabs. The concrete beams are connected to the upper ends of each supporting column, and the covered steel secondary beams are connected to the concrete beams on both sides. The composite slabs are laid on the covered steel secondary beams and connected to the concrete beams. The concrete beams are provided with pre-embedded covered steel parts that are connected to the covered steel secondary beams at intervals. Each pre-embedded covered steel part has a front steel plate, a rear steel plate, a connector, and a connecting steel plate. The front and rear steel plates are respectively pre-embedded on the front and rear sides of the concrete beam. The connector is fixedly connected to the front and rear steel plates. The connecting steel plate is vertically arranged at the front end of the front steel plate. The connecting steel plate is connected to the covered steel secondary beams by bolts.

2. The non-form and non-supporting beam and slab structure system of claim 1, wherein, The connector is a shear-resistant steel bar or a shear-resistant steel plate. The shear-resistant steel bar is connected at least around the perimeter and center of the front and rear steel plates, and the shear-resistant steel plate is vertically arranged between the front and rear steel plates.

3. The non-form and non-supporting beam and slab structure system of claim 1, wherein, At least one covered steel secondary beam is provided between adjacent concrete beams. The top of the covered steel secondary beam is provided with shear studs. The composite plate is provided with connection holes corresponding to the shear studs. The shear studs pass through the connection holes and are connected to the composite plate.

4. The non-form and non-supporting beam and slab structure system of the clad steel beam and the laminated slab according to claim 1 or 2, characterized in that, The encased steel secondary beam comprises an I-beam, "U"-shaped stirrups, reinforcing bars, side plates, and concrete. The I-beam has connectors at both ends, which are connected to connecting steel plates. The side plates are located between the connectors in the grooves on both sides of the I-beam. The "U"-shaped stirrups are spaced apart within the I-beam between the connectors and are locked to the I-beam with nuts. The reinforcing bars are connected to each "U"-shaped stirrup. The concrete fills the grooves in the I-beam between the side plates.

5. The non-form and non-supporting beam and slab structure system of claim 1 or 3, wherein, The inner side of the concrete beam is provided with corbels, and the composite slab is supported on the corbels.

6. The non-form and non-supporting beam and slab structure system of claim 1, wherein, The composite slab has transverse steel bars laid on the upper and lower sides of the steel pipe truss, and the transverse steel bars connect each composite slab.

7. The non-form and non-supporting beam and slab structure system of claim 1, wherein, The composite slab is provided with a negative moment reinforcement bar one, which is symmetrically arranged with the covered steel secondary beam; a negative moment reinforcement bar two is provided between the composite slab and the concrete beam.

8. The beam-slab structural system of covered steel beams and composite slabs without formwork or support as described in claim 7, characterized in that, The length of the first negative moment reinforcement bar is four times the width of the covered steel secondary beam, and the length of the second negative moment reinforcement bar is four times the width of the concrete beam.

9. A beam-slab structural system for covering steel beams and composite slabs without formwork or support, as described in claim 5, is characterized in that... The cow leg has a thickness of 50mm and a height of 100mm.

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