Novel steel bar truss floor

Abstract

The utility model discloses a novel steel bar truss floor slab, belongs to the technical field of building prefabricated parts, and provides a steel bar truss floor slab capable of bearing larger stacking pressure. The steel bar truss floor slab comprises a base plate, the upper surface of the base plate is at least fixedly connected with a pair of bridging plates, and four corner ribs are fixedly connected between the paired bridging plates; the four corner ribs are parallel to one another and located in the four corner directions of the two bridging plates respectively, the four corner ribs are jointly wound with a three-dimensional winding rib, the three-dimensional winding rib is provided with a plurality of bypassing units connected end to end, and each bypassing unit is provided with two continuous horizontal parts and two continuous inclined parts. By designing the three-dimensional rib winding structure, the reinforcing steel bar structure on the floor slab is in the shape of a triangular prism with the top and the bottom opposite to each other, the contact area of a reinforcing steel bar framework and the concrete floor slab is larger, the pressure intensity borne by the floor slab is obviously smaller under the same pressure effect, and therefore the finished reinforcing steel bar truss floor slab can be stacked higher; and the utilization rate of storage space can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of building prefabricated parts, and in particular to a novel steel bar truss floor. Background Art

[0002] Steel truss floor is a prefabricated material commonly used in construction. It is made of steel bars and concrete. The steel bars can effectively improve the strength of concrete slabs. The steel trusses can directly participate in the construction of buildings, which can effectively improve construction efficiency. The steel skeletons on existing steel truss floors are mostly triangular prisms, which have good stability. However, after the floors are manufactured in the factory, they need to be stacked in order to reduce the floor area. However, the top area of ​​the steel skeleton on the floor is relatively small, and the contact stress with the stacked floor above will be relatively large. The higher the number of stacked layers, the greater the stress on the floor below. In order to avoid the concrete floor being crushed, the finished truss floor cannot be stacked too high. Therefore, the utilization rate of the storage space of the existing steel truss floors is not high. Summary of the invention

[0003] The purpose of the present application is to provide a steel truss floor that can withstand greater stacking pressure.

[0004] To achieve the above objectives, the present application provides a novel steel truss floor: comprising a base plate, the upper surface of which is fixedly connected to at least a pair of frame plates, four corner ribs are fixedly connected between the paired frame plates, the four corner ribs are parallel to each other, and are respectively located at the four corner directions of the two frame plates, three-dimensional winding bars are wound around the four corner ribs, the three-dimensional winding bars have a plurality of winding units connected end to end, each winding unit has two continuous horizontal portions and two inclined portions, the projections of the three-dimensional winding bars on the frame plates are two similar isosceles triangles, and the waists of the two isosceles triangles are collinear and the vertices coincide, the three-dimensional winding bars have upper and lower double triangular prism structures, taking into account both stability and a larger contact area of ​​the top surface.

[0005] As a preferred embodiment, the four corner ribs are respectively a lower left rib, a lower right rib, an upper left rib and an upper right rib, the lower left rib is located at the lower left corner of the frame plate, the lower right rib is located at the lower right corner of the frame plate, the upper left rib is located at the upper left corner of the frame plate, and the upper right rib is located at the upper right corner of the frame plate, forming a rectangular frame.

[0006] As a preferred embodiment, the bypass unit of the three-dimensional winding rib includes a front oblique rib with its right end facing backwards, the right end of the front oblique rib is connected to an upper oblique rib with its upper end facing backwards, the upper end of the upper oblique rib is connected to a rear oblique rib with its right end facing backwards, the right end of the rear oblique rib is connected to a lower oblique rib with its lower end facing left, and the lower end of the lower oblique rib is connected to the left end of the front oblique rib of the next bypass unit; the front oblique rib and the rear oblique rib are two horizontal parts of the three-dimensional winding rib, and the upper oblique rib and the lower oblique rib are two inclined parts of the three-dimensional winding rib, which together form an interlaced three-dimensional structure.

[0007] As a preferred embodiment, the front oblique ribs are parallel to the rear oblique ribs, the upper oblique ribs are perpendicular to the lower oblique ribs in different planes, and the bending parameters are consistent, which makes processing more convenient.

[0008] Preferably, the front oblique rib is located below the left lower rib and the right lower rib, the upper oblique rib is located between the right lower rib and the left upper rib, the rear oblique rib is located above the left upper rib and the right upper rib, and the lower oblique rib is located between the right upper rib and the left lower rib, forming a continuous winding structure.

[0009] As a preferred embodiment, a central rib is fixedly connected between the same pair of the frame plates, and the central rib is fixedly connected to the upper oblique rib and the lower oblique rib at the same time, so as to improve the stability of the middle inclined part of the three-dimensional rib.

[0010] As a preferred embodiment, the central ribs include middle and lower ribs and middle and upper ribs. The middle and lower ribs are located below the intersection of the projections of the upper oblique ribs and the lower oblique ribs on the frame plate, and the middle and upper ribs are located above the intersection of the projections of the upper oblique ribs and the lower oblique ribs on the frame plate. The upper and lower arrangement further enhances the strength of the middle inclined part of the three-dimensional ribs.

[0011] As a preference, the three-dimensional ribs are fixedly connected to the base plate, and the base plate is provided with reinforcing ribs at portions other than the connection with the three-dimensional ribs; load-reducing grooves are provided on the left and right sides of the mounting plate, so as to reduce consumables and lower dead weight while ensuring the connection and its own strength, thereby achieving better lightweighting.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] (1) By designing a three-dimensional winding reinforcement structure, the steel structure on the floor slab has a triangular prism shape with the top and the bottom facing each other. This not only maintains the structural strength of the steel skeleton itself, but also increases the contact area between the steel skeleton and the concrete floor slab. Under the same pressure, the pressure on the floor slab is significantly smaller. Therefore, the finished steel truss floor slab can be stacked higher without worrying about being crushed, which can effectively improve the utilization rate of the storage space.

[0014] (2) By arranging a plurality of rib structures in the three-dimensional winding reinforcement, the three-dimensional winding reinforcement has good structural stability, and the winding units of the three-dimensional winding reinforcement can be kept very neat after being compressed, which is conducive to uniform force after being installed in the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a first stereoscopic schematic diagram of the overall structure of the novel steel bar truss floor;

[0016] Figure 2 It is a three-dimensional cross-sectional view of the overall structure of the new steel truss floor;

[0017] Figure 3 For this new type of steel truss floor Figure 2 A local enlarged view of point A;

[0018] Figure 4 A three-dimensional structural schematic diagram of the steel bar structure of the new steel bar truss floor slab arranged between the frame plates;

[0019] Figure 5 For this new type of steel truss floor Figure 4 A partial enlarged view of point B;

[0020] Figure 6 For this new type of steel truss floor Figure 4 A partial enlarged view of point C;

[0021] Figure 7 It is a three-dimensional structural schematic diagram of the steel bar assembly of the novel steel bar truss floor;

[0022] Figure 8 For this new type of steel truss floor Figure 7 A partial enlarged view of point D;

[0023] Fig. 9 The end surface arrangement diagram of the steel bar assembly of the new steel bar truss floor;

[0024] Fig.10 It is a schematic diagram of the three-dimensional structure of the three-dimensional reinforcement of the new steel truss floor;

[0025] Fig.11 For this new type of steel truss floor Fig.10 A local enlarged view of point E;

[0026] Fig.12 It is a side view of the three-dimensional reinforcement of the new type of steel truss floor.

[0027] In the figure: 1, base plate; 101, reinforcing rib; 2, frame plate; 201, load-reducing groove; 3, central rib; 301, middle and lower rib; 302, middle and upper rib; 4, corner rib; 401, lower left rib; 402, lower right rib; 403, upper left rib; 404, upper right rib; 5, three-dimensional winding rib; 501, front oblique rib; 502, upper oblique rib; 503, rear oblique rib; 504, lower oblique rib. DETAILED DESCRIPTION

[0028] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0031] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0032] like Figure 1-12The new steel truss floor slab shown in the figure comprises a rectangular base plate 1, which is made of concrete material. At least one pair of frame plates 2 is fixedly connected to the upper surface of the base plate 1. The frame plates 2 are made of corrosion-resistant alloy material, and one side of the frame plates 2 is buried in the base plate 1 made of concrete. In this embodiment, there are three pairs of frame plates 2, and the two frame plates 2 in each pair are very close to the opposite sides of the base plate 1. Four corner ribs 4 are fixedly connected between the pairs of frame plates 2. The corner ribs 4 are actually common solid cylindrical steel bars. The four corner ribs 4 are parallel to each other and are respectively located at two frame plates. The four corner directions of the connecting plate 2 form a rectangular three-dimensional structure, and the four corner ribs 4 are respectively the lower left rib 401, the lower right rib 402, the upper left rib 403 and the upper right rib 404. It is not difficult to determine from the names that the lower left rib 401 is located at the lower left corner of the connecting plate 2, the lower right rib 402 is located at the lower right corner of the connecting plate 2, the upper left rib 403 is located at the upper left corner of the connecting plate 2, and the upper right rib 404 is located at the upper right corner of the connecting plate 2. The ends of the four corner ribs 4 are fixedly connected to the opposite sides of the connecting plate 2 by welding.

[0033] The four corner ribs 4 are commonly wound with a three-dimensional winding rib 5. The three-dimensional winding rib 5 is actually formed by bending a cylindrical solid steel bar, and the three-dimensional winding rib 5 has a plurality of winding units connected end to end. Although it is called so, it is just an artificial definition made for the convenience of understanding. The plurality of winding units not only have the same structure, but also an integrated structure. Each winding unit has two continuous horizontal parts and two inclined parts. Specifically: the winding unit of the three-dimensional winding rib 5 includes a front oblique rib 501 with the right end facing backwards. The front oblique rib 501 is usually located at the front end of the entire three-dimensional winding rib 5. The right end of the front oblique rib 501 is connected to the upper end facing backwards. The upper oblique rib 502 has an upper end connected to a rear oblique rib 503 with its right end pointing backwards, the right end of the rear oblique rib 503 is connected to a lower oblique rib 504 with its lower end pointing leftwards, and the lower end of the lower oblique rib 504 is connected to the left end of the front oblique rib 501 of the next winding unit. The tail end of the last winding unit of the entire three-dimensional winding rib 5 is usually the lower oblique rib 504, so that the winding units included in the three-dimensional winding rib 5 are an integer, so that the length of the entire three-dimensional winding rib 5 can be determined by counting the number of winding units without using measuring tools, which is more convenient for determining the length and quantity of the product and the processing of the product.

[0034] The front oblique rib 501 is located below the left lower rib 401 and the right lower rib 402, and the front oblique rib 501 is spot-welded to the left lower rib 401 and the right lower rib 402 respectively. The upper oblique rib 502 is located between the right lower rib 402 and the left upper rib 403. The right lower rib 402 is located below the upper oblique rib 502, and the left upper rib 403 is located above the upper oblique rib 502. The upper oblique rib 502 is spot-welded to the right lower rib 402 and the left upper rib 403 respectively. The rear oblique rib 503 is located above the upper left rib 403 and the upper right rib 404, and the rear oblique rib 503 is spot-welded to the upper left rib 403 and the upper right rib 404 respectively. The lower oblique rib 504 is located between the upper right rib 404 and the lower left rib 401, the upper right rib 404 is located above the lower oblique rib 504, and the lower left rib 401 is located below the lower oblique rib 504, and the lower oblique rib 504 is spot-welded to the upper right rib 404 and the lower left rib 401 respectively.

[0035] Therefore, the projection of the three-dimensional winding rib 5 on the connecting plate 2 is two similar isosceles triangles, and the waists of the two isosceles triangles are collinear and the vertices coincide. In fact, the front oblique rib 501 and the rear oblique rib 503 are the two horizontal parts of the three-dimensional winding rib 5, and in this embodiment, the front oblique rib 501 is parallel to the rear oblique rib 503, and the upper oblique rib 502 and the lower oblique rib 504 are the two inclined parts of the three-dimensional winding rib 5, and in this embodiment, the upper oblique rib 502 is perpendicular to the lower oblique rib 504 in different planes, so the projection of the winding unit of the three-dimensional winding rib 5 on the connecting plate 2 is two isosceles right triangles at opposite vertices.

[0036] The three-dimensional rib 5 is fixedly connected to the base plate 1. In fact, the left and right ends of the front oblique rib 501 located at the bottom are fixed to the pre-buried metal protrusions on the base plate 1, such as bolts, by welding. Usually, the two ends of the front oblique rib 501 are fitted together with the bolts at the corresponding positions on the base plate 1 and spot welded to ensure the connection stability. The base plate 1 is provided with reinforcing ribs 101 at the part other than the connection with the three-dimensional rib 5. The reinforcing rib 101 is actually a structure with one convex side and the other concave side on the base plate 1, which is similar to the convex corrugated structure formed by stamping on the metal plate, and both can improve the structural strength of the plate. The extension direction of the reinforcing rib 101 is perpendicular to the extension direction of the steel bar structure between the frame plates 2, and is used to improve the structural strength of the base plate 1 from a direction perpendicular to the steel bar structure, thereby improving the overall deformation resistance of the base plate 1.

[0037] The same pair of frame plates 2 is also fixedly connected with a central rib 3, and the two ends of the central rib 3 are also fixedly connected to the opposite sides of the frame plates 2 by welding. The central rib 3 is located in the center of the four corner ribs 4. The central rib 3 is fixedly connected to the upper oblique rib 502 and the lower oblique rib 504 at the same time, and the connection is achieved by spot welding. This is the case for each bypass unit. In this embodiment, the central rib 3 includes a middle and lower rib 301 and a middle and upper rib 302. The middle and lower rib 301 and the middle and upper rib 302 are also isosceles right triangles, but the cross-sectional area is smaller than the projected area of ​​the three-dimensional winding rib 5. It should be smaller, only equivalent to the cross-sectional area of ​​the corner ribs, the middle and lower ribs 301 are located below the intersection of the projections of the upper oblique ribs 502 and the lower oblique ribs 504 on the frame plate 2, and the middle and upper ribs 302 are located above the intersection of the projections of the upper oblique ribs 502 and the lower oblique ribs 504 on the frame plate 2. The middle and lower ribs 301 and the middle and upper ribs 302 are arranged up and down in the same vertical plane to improve the structural stability of the middle sections of the upper oblique ribs 502 and the lower oblique ribs 504. The left and right sides of the frame plate 2 are provided with load-reducing grooves 201, which can reduce consumables and reduce dead weight as much as possible while ensuring contact with the central ribs 3 and the corner ribs 4.

[0038] Prefabrication process: first, bend the long straight steel bars multiple times on the bending equipment to form three-dimensional winding reinforcement 5, then insert the four corner steel bars 4 into the four corners of the extension direction of the three-dimensional winding reinforcement 5, and perform simple welding near the intersection, and at the same time, insert the two central ribs 3 into the middle part of the extension direction of the three-dimensional winding reinforcement 5, and perform simple welding near the intersection to achieve the fixation of the steel skeleton, then place the steel skeleton on the base plate 1 on which the reinforcing ribs 101 have been cast, and weld the front oblique ribs 501 and the base plate 1 together between the reinforcing ribs 101. The metal protrusion structure embedded on the base plate 1 is located between the reinforcing ribs 101, and finally weld the connecting plate 2 at both ends of the central rib 3 and the corner rib 4 to ensure the stability of the spacing between the ends of several central ribs 3 and corner ribs 4. The connecting plate 2 is finally welded and fixed to the base plate 1, and the other groups of steel skeletons are configured according to the above steps to complete the production of the steel truss floor.

[0039] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A new type of steel bar truss floor, characterized by: The invention comprises a base plate (1), wherein at least a pair of frame plates (2) are fixedly connected to the upper surface of the base plate (1), and four corner ribs (4) are fixedly connected between the pair of frame plates (2), and the four corner ribs (4) are parallel to each other and respectively located in the four corner directions of the two frame plates (2), and three-dimensional winding ribs (5) are wound together on the four corner ribs (4), and the three-dimensional winding ribs (5) have a plurality of winding units connected end to end, and each winding unit has two continuous horizontal parts and two inclined parts, and the projection of the three-dimensional winding ribs (5) on the frame plates (2) is two similar isosceles triangles, and the waists of the two isosceles triangles are collinear and the vertices coincide.

2. The novel steel bar truss floor slab as claimed in claim 1 is characterized in that: The four corner ribs (4) are respectively a lower left rib (401), a lower right rib (402), an upper left rib (403) and an upper right rib (404); the lower left rib (401) is located at the lower left corner of the frame plate (2); the lower right rib (402) is located at the lower right corner of the frame plate (2); the upper left rib (403) is located at the upper left corner of the frame plate (2); and the upper right rib (404) is located at the upper right corner of the frame plate (2).

3. The novel steel bar truss floor slab as claimed in claim 2 is characterized in that: The detour unit of the three-dimensional winding rib (5) comprises a front oblique rib (501) with its right end facing backwards, the right end of the front oblique rib (501) is connected to an upper oblique rib (502) with its upper end facing backwards, the upper end of the upper oblique rib (502) is connected to a rear oblique rib (503) with its right end facing backwards, the right end of the rear oblique rib (503) is connected to a lower oblique rib (504) with its lower end facing leftwards, and the lower end of the lower oblique rib (504) is connected to the left end of the front oblique rib (501) of the next detour unit; the front oblique rib (501) and the rear oblique rib (503) are two horizontal parts of the three-dimensional winding rib (5), and the upper oblique rib (502) and the lower oblique rib (504) are two inclined parts of the three-dimensional winding rib (5).

4. The novel steel bar truss floor slab as claimed in claim 3 is characterized in that: The front oblique rib (501) is parallel to the rear oblique rib (503), and the upper oblique rib (502) is perpendicular to the lower oblique rib (504) in different planes.

5. The novel steel bar truss floor slab as claimed in claim 4 is characterized in that: The front oblique rib (501) is located below the left lower rib (401) and the right lower rib (402), the upper oblique rib (502) is located between the right lower rib (402) and the left upper rib (403), the rear oblique rib (503) is located above the left upper rib (403) and the right upper rib (404), and the lower oblique rib (504) is located between the right upper rib (404) and the left lower rib (401).

6. The novel steel bar truss floor slab as claimed in claim 5 is characterized in that: A central rib (3) is also fixedly connected between the same pair of the frame connecting plates (2), and the central rib (3) is fixedly connected to the upper oblique rib (502) and the lower oblique rib (504) at the same time.

7. The novel steel bar truss floor slab as claimed in claim 6 is characterized in that: The central rib (3) comprises a middle lower rib (301) and a middle upper rib (302), wherein the middle lower rib (301) is located below the intersection of the projections of the upper oblique rib (502) and the lower oblique rib (504) on the frame connecting plate (2), and the middle upper rib (302) is located above the intersection of the projections of the upper oblique rib (502) and the lower oblique rib (504) on the frame connecting plate (2).

8. The novel steel bar truss floor slab according to any one of claims 1 to 7, characterized in that: The three-dimensional ribs (5) are fixedly connected to the base plate (1); the base plate (1) is provided with reinforcing ribs (101) at a portion other than the portion connected to the three-dimensional ribs (5); and the left and right sides of the frame plate (2) are provided with load-reducing grooves (201).

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