Fabricated floor system based on full-dry connection nodes

Abstract

The utility model relates to an assembly type floor system based on a full-dry type connection node, which is composed of a vertical bearing system and a horizontal rigidity system, the vertical bearing system comprises frame beams arranged around the assembly type floor system; the periphery of the profiled steel sheet is erected on the frame beam and is fixedly connected with the frame beam; the steel plate reinforcing bands are symmetrically arranged on the upper surface and the lower surface of the profiled steel plate in the orthogonal direction of the span of the floor system and are fixedly connected with the profiled steel plate; the groove of the profiled steel sheet is filled with the inter-plate filler; the groove of the profiled steel sheet is filled with the inter-plate filler; the horizontal stiffness system comprises a horizontal cross support, the horizontal cross support is arranged below the profiled steel sheet in a horizontal cross mode, and the two ends of the horizontal cross support are fixedly connected with the corresponding frame beams. All nodes are dry-type connection nodes, construction operation is simple and convenient, operability is high, and meanwhile, the structure has the advantages of being light in dead weight, high in bearing capacity, good in anti-seismic performance and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to building structure technical field especially is floor structure and its connecting node, concretely is a kind of fabricated floor based on full dry type connecting node. BACKGROUND

[0002] The installation procedure of the prefabricated floor commonly used in China is to position and hoist multiple prefabricated panels on site, then pour concrete or pour a concrete surface layer at the panel joints after formwork is erected at the bottom of the panels. However, the width of the commonly used prefabricated panels is currently 500mm or 600mm, and when the span is large, the panel joints increase accordingly, making it difficult to guarantee the integrity of the prefabricated floor, and the construction procedure is complex, the construction period is long, and the quality is difficult to guarantee.

[0003] In comparison with the fabricated floor, the cast-in-place floor has greater plane stiffness and is not prone to deformation. However, the existence of the connecting nodes in the fabricated floor makes the floor discontinuous, thereby affecting the integrity of the fabricated building. The prefabricated fabricated floor connecting node is a weak part in the structure and is prone to brittle shear failure under the action of an earthquake, affecting the overall performance of the floor and even causing collapse.

[0004] The connecting forms of the concrete prefabricated floor at home and abroad can be mainly divided into two types according to the construction technology, namely, wet connecting nodes and dry connecting nodes. The wet connecting nodes can be divided into superimposed layer wet connecting structure and non-superimposed layer wet connecting structure. The superimposed layer wet connecting structure needs to pour a concrete surface layer on the prefabricated floor, and the floor and the beam are combined through steel bars or other connecting members. In comparison with the traditional cast-in-place floor system, the method of pouring the surface layer after the floor is prefabricated reduces the amount of formwork, improves the degree of mechanization, reduces the number of personnel on site, and is conducive to reducing costs. Although the amount of concrete is reduced, a large amount of concrete is still required. The non-superimposed layer wet connecting structure only pours concrete at the connecting position, and the connecting is performed in the form of a post-pouring strip. The dry connecting method is to connect through mechanical connecting members, and the mechanical connecting members are connected into a whole through bolts or welding. The dry connecting method has a high prefabrication rate and can improve the assembly efficiency. In comparison with the wet connecting method, the dry connecting method has a higher degree of mechanization, and the dry connecting method usually uses bolts and welding, has no wet work on site, and can quickly and efficiently assemble components.

[0005] In summary, the prefabricated floor spliced by the wet connecting method can provide greater stiffness and has good overall performance, but the prefabricated floor spliced by the dry connecting method has high assembly efficiency, but also has many problems.

[0006] (1) In the wet connection node, it is often necessary to use the construction form of the outwardly extending barb to reliably connect the post-cast part of the concrete with the prefabricated concrete slab, but when the prefabricated slab is prefabricated in the factory, the transportation from the factory to the site and the stacking in the construction site may cause different degrees of damage to the barb, thereby causing the connection degree of the node to be unable to meet the design requirements, so it is necessary to further study the construction form of the wet connection node to avoid the failure of the prefabricated floor slab connection node caused by the damage of the barb.

[0007] (2) The dry connection node is higher in assembly degree than the wet connection node, is spliced on site after being processed in the factory, and speeds up the construction progress. However, the dry connection node construction form is less studied at present, and the connection mode is mostly welding, so that the building is difficult to demolish in the process of demolishing the building after the service life of the building structure expires.

[0008] Therefore, it is necessary to study a new type of assembly floor and a dry connection node thereof to meet the use requirements in various industrial and civil buildings. SUMMARY

[0009] In view of the deficiencies of the prior art, the utility model provides a kind of assembly floor based on full dry connection node, all nodes are dry connection nodes, and it is simple and convenient to operate, strong operability, fast construction speed, with the characteristics of light self weight, high bearing capacity, good seismic performance etc.

[0010] The technical scheme of the utility model is as follows:

[0011] A kind of assembly floor based on full dry connection node, the assembly floor is composed of vertical load-bearing system and horizontal stiffness system, wherein:

[0012] The vertical load-bearing system includes:

[0013] Frame beam, the frame beam is arranged around the assembly floor;

[0014] Profiled steel plate, the profiled steel plate is erected around the frame beam and is connected and fixed with the frame beam;

[0015] Steel plate reinforcing belt, the steel plate reinforcing belt is symmetrically arranged on the upper and lower surfaces of the profiled steel plate along the orthogonal direction of floor span, and is connected and fixed with the profiled steel plate;

[0016] Interlayer filler, the interlayer filler is filled in the groove of the profiled steel plate;

[0017] The horizontal stiffness system includes:

[0018] Horizontal cross support, the horizontal cross support is arranged below the profiled steel plate in horizontal cross, and both ends are connected and fixed with corresponding frame beam.

[0019] As a preferred improvement of the above-mentioned fabricated floor, the frame beam comprises a support beam and a non-support beam, both of which are box-shaped or H-shaped steel beams.

[0020] As a preferred improvement of the above-mentioned fabricated floor, the profiled steel plate is connected and fixed with the frame beam through a stud, the stud is arranged on the top of the frame beam, the diameter of the stud is 10-16 mm, and the spacing of the studs is not greater than 200 mm.

[0021] As a preferred improvement of the above-mentioned fabricated floor, the profiled steel plate is vertically overlapped with the frame beam at the support beam and is connected and fixed with the frame beam in each groove of the profiled steel plate through a stud.

[0022] The profiled steel plate is overlapped with the frame beam in the same direction at the non-support beam and is connected and fixed with the frame beam at the edge of the profiled steel plate through not less than two studs on each side.

[0023] As a preferred improvement of the above-mentioned fabricated floor, the profiled steel plate is a closed profiled steel plate or an open profiled steel plate, the joints between adjacent profiled steel plates are connected through self-tapping screws or are connected through the locking edges of the profiled steel plates.

[0024] As a preferred improvement of the above-mentioned fabricated floor, the steel plate reinforcing belt is welded with the profiled steel plate through a fillet weld.

[0025] As a preferred improvement of the above-mentioned fabricated floor, the steel plate reinforcing belt has a thickness of 5-10 mm, a width of 100-150 mm and a spacing of 1000-2000 mm.

[0026] As a preferred improvement of the above-mentioned fabricated floor, a stiffening rib plate is additionally arranged on the frame beam, the stiffening rib plate is provided with bolt holes corresponding to the end portions of the horizontal cross supports, and the horizontal cross supports are connected with the stiffening rib plate through high-strength bolt hinged connections.

[0027] As a preferred improvement of the above-mentioned fabricated floor, the bolt holes are long circular holes, and the horizontal cross supports are connected with the stiffening rib plate through long circular hole high-strength bolt hinged connections.

[0028] As a preferred improvement of the above-mentioned fabricated floor, the horizontal cross supports are circular steel pipes.

[0029] Beneficial effects: The fabricated floor based on the full dry type connecting node can at least obtain the following beneficial effects:

[0030] (1) The fabricated floor is constructed by using the full dry type connecting node, is energy-saving and environment-friendly, and is green construction.

[0031] (2) The fabricated floor is resisted by a vertical load-bearing system against vertical loads such as self-weight of the structure, and a horizontal stiffness system coordinates deformation of the vertical load-bearing system, cooperates with the vertical load-bearing system, and is collectively resisted against horizontal wind load, horizontal earthquake action and the like.

[0032] (3) The fabricated floor adopts profiled steel plates, has the advantage of light weight, and combines steel plate reinforcing bands on two sides of the steel plate thickness, has the advantages of high load bearing and good seismic performance, and can be widely applied to multi-story and high-rise fabricated buildings.

[0033] (4) The fabricated floor and the connecting node thereof have simple structure, strong operability, convenient and fast construction, fast construction speed, can greatly shorten the construction period, and reduce the construction cost.

[0034] (5) The fabricated floor and the connecting node thereof have simple structure, and are convenient to install and remove.

[0035] It should be understood that the implementation of any embodiment of the present application does not mean that all or multiple of the above beneficial effects are simultaneously achieved or achieved. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other implementation drawings can be derived from the provided drawings without creative labor.

[0037] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0038] Figure 1 The overall plan view of the fabricated floor of one embodiment of the present application is exemplarily shown;

[0039] Figure 2 The profiled steel plate lap joint node of the fabricated floor of one embodiment of the present application is exemplarily shown;

[0040] Figure 3 The profiled steel plate and the steel plate reinforcing band of one embodiment of the present application are exemplarily shown;

[0041] Figure 4The profiled steel sheet and the inter-panel filler of the fabricated floor of the embodiment of the utility model are shown in the large-scale drawing;

[0042] Figure 5 The profiled steel sheet and the support beam node of the fabricated floor of the embodiment of the utility model are shown in the large-scale drawing;

[0043] Figure 6 The profiled steel sheet and the non-support beam node of the fabricated floor of the embodiment of the utility model are shown in the large-scale drawing;

[0044] Figure 7 The horizontal cross support and the frame beam node of the fabricated floor of the embodiment of the utility model are shown in the large-scale drawing.

[0045] Markings in the drawing:

[0046] Frame beam 1, support beam 11, non-support beam 12, secondary beam 13, stiffened rib plate 14;

[0047] Profiled steel sheet 2, self-tapping screw 21, bolt 22;

[0048] Steel sheet reinforcing band 3;

[0049] Inter-panel filler 4;

[0050] Horizontal cross support 5, long round hole 51.

[0051] The same or corresponding markings in the drawing represent the same or corresponding parts. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer and more apparent, the embodiments of the utility model will be further described in detail below in combination with the drawings. Herein, the illustrative embodiments of the utility model and their descriptions are used to explain the utility model, but not as a limitation on the utility model.

[0053] In the utility model, unless explicitly defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0054] It is to be understood that the terms "including", "comprising", "consisting of", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such product, apparatus, process, or method. Without further limitation, an element defined by a statement "including", "comprising", "consisting of" does not exclude the presence of additional identical elements in a product, apparatus, process, or method that includes the stated element.

[0055] It should also be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships as shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices, components or structures referred to must have a particular orientation, be constructed or operated in a particular orientation, and cannot be understood as a limitation on the present application.

[0056] In addition, the terms "first", "second", are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0057] In order to promote the development of prefabricated buildings to high-rise buildings and high-intensity seismic prevention areas, the application of integral prefabricated floor slabs is of great significance to the promotion of prefabricated buildings. However, the size of the prefabricated floor slab is small at present, which is difficult to meet the use demand of large-span space. If the size of the prefabricated floor slab is adjusted to be consistent with the span, the whole prefabricated floor slab is hoisted, and the slab end is placed on the beam, and the splicing of the adjacent two prefabricated slabs on the beam is completed, which improves the integrity of the floor slab on the one hand, and reduces the construction process and shortens the construction period on the other hand. At the same time, the connecting node is arranged on the beam, which can strengthen the connection between the prefabricated floor slab and the beam, improve the combination effect, and promote the cooperation of the beam and the prefabricated floor slab.

[0058] Therefore, the present application provides a prefabricated floor slab, which has a size consistent with the span and is formed based on a full dry connecting node structure, can well balance the requirements of construction convenience, overall bearing capacity and seismic resistance, and meets the use demand in various industrial and civil buildings.

[0059] The implementation of the present application will be described in detail in combination with the preferred embodiments.

[0060] Referring to Figures 1-7An assembled floor based on full dry connection nodes, which mainly consists of a vertical load-bearing system and a horizontal stiffness system, wherein the vertical load-bearing system is used to resist vertical loads such as structural dead weight, and the horizontal stiffness system is used to coordinate the deformation of the vertical load-bearing system, and cooperates with the vertical load-bearing system to resist horizontal wind load, horizontal seismic action and the like.

[0061] Specifically, the vertical load-bearing system mainly consists of frame beams 1, profiled steel plates 2, steel plate reinforcing belts 3, inter-plate fillers 4 and the like.

[0062] The frame beams 1 are arranged around the assembled floor in the transverse and longitudinal directions, and are supported on vertical load-bearing members such as frame columns; the frame beams 1 serve as the main load-bearing structure of the entire floor slab, and bear the profiled steel plates 2 and other components thereon.

[0063] As shown in Figure 1 , the frame beams 1 include supported beams 11 and non-supported beams 12 according to the support conditions, and the supported beams 11 and the non-supported beams 12 are in the form of box-type or H-type steel beams, and the cross-sectional size is determined according to the span, load and the like. The supported beams 11 are arranged along the transverse length, i.e. in the orthogonal direction of the span, and the non-supported beams 12 are arranged along the vertical length, i.e. in the direction of the span, and both ends thereof are supported on the frame columns.

[0064] In addition, according to the span conditions, a secondary beam 13 can be further arranged, for example, a secondary beam 13 is arranged in the middle of the orthogonal direction of the span, and both ends of the secondary beam 13 are supported on the corresponding non-supported beams 12. The secondary beam 13 can be in the form of a box-type or H-type steel beam, or other smaller cross-section forms.

[0065] Continuing to refer to Figure 1 , the profiled steel plates 2 are arranged around the frame beams 1 and are connected and fixed with the frame beams 1;

[0066] As shown in Figure 2 , the profiled steel plates 2 are in the form of closed profiled steel plates or open profiled steel plates, and the model is determined according to the floor slab span and load calculation. The adjacent profiled steel plates 2 are connected at the joint by self-tapping screws 21, and the longitudinal spacing of the self-tapping screws 21 along the groove is not greater than 200 mm, or the profiled steel plates are connected by themselves, and at least two self-tapping screws 21 are used in the same groove to ensure the sealing and anti-seepage performance of the connection.

[0067] The profiled steel plates have light self-weight, which can reduce the structural dead weight by 20% to 30%, greatly reducing the structural dead weight, which is beneficial to seismic resistance and can greatly reduce the cost of building foundation.

[0068] As shown in Figure 1 , Figure 3 , the steel plate reinforcing belts 3 are symmetrically arranged on the upper and lower surfaces of the profiled steel plates 2 along the orthogonal direction of the floor slab span, and are connected and fixed with the profiled steel plates 2;

[0069] The steel plate reinforcing belt 3 adopts an elongated strip-shaped steel plate, multiple of which are arranged in uniform intervals in the floor span direction, the steel plate has a thickness of 5-10 mm, a width of 100 mm-150 mm, and an interval of 1000 mm-2000 mm. The steel plate reinforcing belt 3 is symmetrically arranged along the thickness direction of the floor and is connected with the profiled steel plate 2 by means of fillet welding, which can increase the out-of-plane stiffness of the floor, coordinate the deformation of the profiled steel plate 2, and reduce the deflection of the floor.

[0070] By adding the steel plate reinforcing belt 3 on both sides of the profiled steel plate 2, the load bearing capacity is high, and the seismic performance is good, which can be widely applied to multi-story and high-rise fabricated buildings.

[0071] As shown in Figure 4 , the inter-plate filler 4 is filled in the groove of the profiled steel plate 2, the inter-plate filler 4 is a fireproof and soundproof material such as rock wool, which is filled in the groove of the profiled steel plate 2 to improve the fireproof and soundproof performance. The profiled steel plate 2 and the inter-plate filler 4 are prepared in the factory in advance.

[0072] Continuing to refer to Figure 5 , Figure 6 , the profiled steel plate 2 is connected and fixed with the frame beam 1 by means of the stud 22, and the stud 22 is arranged on the top of the frame beam 1.

[0073] For the support beam 11, the profiled steel plate 2 is vertically overlapped with the support beam 11 at the support beam 11, as shown in Figure 5 , and is connected and fixed with the support beam 11 in each groove of the profiled steel plate 2 by means of the stud 22;

[0074] For the non-support beam 12, the profiled steel plate 2 is forwardly overlapped with the non-support beam 12 at the non-support beam 12, i.e., they are arranged in parallel, and are connected and fixed with the non-support beam 12 at the edge of the profiled steel plate 2 by means of not less than 2 studs 22 on each side.

[0075] The diameter of the stud 22 is 10 mm-16 mm, and the stud spacing is not greater than 200 mm.

[0076] By means of simple stud connection and fixation, the operability is strong, the construction is convenient and fast, the construction speed is fast, the construction period can be greatly shortened, and the construction cost can be reduced.

[0077] Again referring to Figure 1 , Figure 7 , the horizontal stiffness system mainly includes the horizontal cross brace 5, which is arranged below the profiled steel plate 2 in a horizontal cross manner and is connected and fixed with the corresponding frame beam 1 at both ends.

[0078] Specifically, the frame beam 1 is additionally provided with a stiffening rib plate 14, for example, for an H-shaped steel beam, a stiffening rib plate 14 is welded between the upper and lower flanges and the web, and the stiffening rib plate 14 is provided with bolt holes corresponding to the ends of the horizontal cross brace 5, and the horizontal cross brace 5 is hingedly connected to the corresponding stiffening rib plate 14 through high-strength bolts at both ends.

[0079] Preferably, the bolt hole is a long circular hole 51, and the horizontal cross brace 5 is hingedly connected to the corresponding stiffening rib plate 14 through high-strength bolts at both ends.

[0080] Specifically, the horizontal cross brace 5 is a circular steel pipe, and the cross-sectional size is determined according to load calculation. The end of the circular steel pipe can be welded with a rectangular plate, and the rectangular plate is provided with a long circular hole 51.

[0081] Of course, the long circular hole 51 can also be provided in the stiffening rib plate 14, or both can be provided with long circular holes. The long circular hole allows a certain displacement of the structure to coordinate the deformation of the vertical load-bearing system, and also has a certain energy dissipation capacity.

[0082] All nodes of the utility model are dry connection nodes, which are simple and convenient to operate, have strong operability, fast construction speed, light self-weight, high bearing capacity, good seismic performance and other characteristics.

[0083] The selection of the terms used in this document is intended to best explain the principles, practical applications or technical improvements of the various embodiments, or to enable other ordinary skilled persons in the art to understand the various embodiments disclosed herein.

[0084] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A fabricated floor diaphragm based on all dry connection nodes, characterized by, The fabricated floor is composed of vertical load-bearing system and horizontal stiffness system, wherein: The vertical load-bearing system comprises: Frame beams arranged around the fabricated floor; Profiled steel plates arranged around the frame beams and fixedly connected with the frame beams; Steel plate reinforcing belts symmetrically arranged on the upper and lower surfaces of the profiled steel plates along the orthogonal direction of the floor span and fixedly connected with the profiled steel plates; Inter-plate fillers filled in the grooves of the profiled steel plates; The horizontal stiffness system comprises: Horizontal cross bracings arranged horizontally under the profiled steel plates and fixedly connected with the corresponding frame beams at both ends.

2. The fabricated floor according to claim 1, wherein: The frame beams comprise support beams and non-support beams, both of which are box-shaped or H-shaped steel beams.

3. The fabricated floor according to claim 2, wherein: The profiled steel plates are fixedly connected with the frame beams through studs arranged on the top of the frame beams, the stud diameter is 10-16 mm, and the stud spacing is not greater than 200 mm.

4. The fabricated floor according to claim 3, wherein: The profiled steel plates are vertically overlapped with the frame beams at the support beams and fixedly connected with the frame beams through studs in each groove of the profiled steel plates; The profiled steel plates are forwardly overlapped with the frame beams at the non-support beams and fixedly connected with the frame beams through not less than 2 studs on each edge of each profiled steel plate.

5. The fabricated floor according to claim 1, wherein: The profiled steel plates are closed profiled steel plates or open profiled steel plates, the adjacent profiled steel plate joints are connected through self-tapping screws, or the edges of the profiled steel plates are connected through the self-locking edges of the profiled steel plates.

6. The fabricated floor according to claim 1, wherein: The steel plate reinforcing belts are welded with the profiled steel plates through fillet welds.

7. The fabricated floor according to claim 1, wherein: The steel plate reinforcing belts have a thickness of 5-10 mm, a width of 100-150 mm, and a spacing of 1000-2000 mm.

8. The fabricated floor according to claim 1, wherein: Stiffening rib plates are additionally arranged on the frame beams, the stiffening rib plates are provided with bolt holes corresponding to the end portions of the horizontal cross bracings, and the horizontal cross bracings are hingedly connected with the stiffening rib plates through high-strength bolts.

9. The fabricated floor according to claim 8, wherein: The bolt holes are oblong holes, and the horizontal cross bracings are hingedly connected with the stiffening rib plates through high-strength bolts through the oblong holes.

10. The fabricated floor according to claim 1, wherein: The horizontal cross bracings are circular steel pipes.

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