Four-corner steel bar truss type laminated slab

Abstract

The utility model provides a four-corner steel bar truss type laminated slab, and belongs to the technical field of buildings. The problem of poor stability in the prior art is solved. The four-corner steel bar truss type laminated slab comprises a bottom plate, a face plate and a truss assembly, the bottom plate and the face plate are both made of concrete materials, the truss assembly is wrapped between the bottom plate and the face plate, and the four-corner steel bar truss type laminated slab is characterized in that the truss assembly comprises a first steel bar, a second steel bar, a third steel bar, a fourth steel bar and reinforcing ribs; the first reinforcing steel bar and the second reinforcing steel bar are adjacently arranged in a left-right parallel mode, the third reinforcing steel bar and the fourth reinforcing steel bar are adjacently arranged in a left-right parallel mode, the third reinforcing steel bar is located under the first reinforcing steel bar, and the fourth reinforcing steel bar is located under the second reinforcing steel bar. The four-corner steel bar truss type laminated slab is high in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction and relates to a four-corner steel bar truss type composite plate. Background Art

[0002] Composite floor is a widely used structural form. At present, the most commonly used ones are triangular steel bar truss composite slab, ribbed triangular steel bar truss composite slab, prefabricated ribbed composite slab, steel tube truss composite slab, etc. The support spacing of triangular steel bar truss composite slab is small during on-site construction, and full-floor support is basically required. Considering the support cost and the convenience of on-site construction, reducing the number of supports of the composite slab and facilitating on-site construction has great practical significance. Ribbed triangular steel bar truss composite slab, prefabricated ribbed composite slab, and steel tube truss composite slab are all composite slabs with few supports based on the above considerations.

[0003] According to Shanghai Construction Materials

[2019] No. 765 and Shanghai Construction Materials

[2021] No. 584, when the support spacing of the composite slab is greater than 3 meters, it can be defined as a "bracing-free composite slab". When calculating the prefabrication rate, the correction factor for non-bracing-free slabs is 0.45, and the correction factor for bracing-free slabs that meet the requirements of the document can be 0.55. Ribbed triangular steel bar truss composite slabs, prefabricated ribbed composite slabs, and steel tube truss composite slabs all meet the requirements for bracing-free slabs specified in the document.

[0004] Through more engineering practices, it is found that the factory production of ribbed triangular steel truss composite plates, prefabricated ribbed composite plates, and steel tube truss composite plates is relatively cumbersome and has high production costs. Small space is reserved for the installation of on-site equipment and pipelines, making construction difficult. Concrete ribs will affect the installation of the upper steel bars of the floor slabs. The costs of these three types of plates are relatively high.

[0005] This patent solves the problem of small support spacing of traditional triangular steel truss composite slabs. The support spacing can be >3 meters, which can meet the requirements of "support-free composite slabs" stipulated in Shanghai Construction Materials

[2019] No. 765 and Shanghai Construction Materials

[2021] No. 584. It avoids the problem of large-spacing support slabs such as ribbed triangular steel truss composite slabs, prefabricated ribbed composite slabs, and steel tube truss composite slabs, which have many production processes, affect production efficiency, and have high production costs, and solves the problem of difficulty in threading equipment pipelines. Summary of the invention

[0006] The utility model aims to provide a four-corner steel bar truss composite plate with high stability and compact structure in view of the above problems existing in the prior art.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A four-corner steel bar truss composite plate, comprising a base plate, a panel and a truss assembly, wherein the base plate and the panel are both made of concrete materials, and the truss assembly is wrapped between the base plate and the panel, and is characterized in that the truss assembly comprises steel bar one, steel bar two, steel bar three, steel bar four and reinforcing bars, wherein the steel bar one and steel bar two are arranged adjacent to each other in parallel, the steel bar three and steel bar four are arranged adjacent to each other in parallel, the steel bar three is located directly below the steel bar one, and the steel bar four is located directly below the steel bar two, and reinforcing bars are provided along the length direction between the steel bar one and the steel bar two, between the steel bar one and the steel bar three, and between the steel bar two and the steel bar four.

[0009] In the four-corner steel bar truss composite plate, the lower part of the truss assembly is embedded in the bottom plate, and the upper part of the truss assembly is embedded in the panel.

[0010] Due to the action of three reinforcing bars, the truss assembly has steel bar one stably connected to steel bar two, steel bar one stably connected to steel bar three, and steel bar two stably connected to steel bar four.

[0011] In the cross-sectional direction of the entire truss assembly, four steel bars are arranged in a rectangular distribution.

[0012] Therefore, steel bars 2 and 4 can be stably connected in the bottom layer, and steel bars 1 and 3 can be stably connected in the surface layer.

[0013] It can be seen that the bottom plate and the panel can be stably connected together under the action of the truss assembly.

[0014] In the above-mentioned four-corner steel bar truss composite plate, the spacing dimension between the steel bar one and the steel bar three is A, the dimension between the steel bar two and the steel bar four is B, and A and B are equal.

[0015] Such a structure can effectively improve the structural compactness of the entire truss assembly.

[0016] In the above-mentioned four-corner steel bar truss composite plate, the steel bar three is arranged parallel to the steel bar one.

[0017] In the above-mentioned four-corner steel bar truss composite slab, the steel bar four is arranged in parallel with the steel bar two.

[0018] In the above-mentioned four-corner steel bar truss composite plate, the reinforcing ribs between the steel bar one and the steel bar two include straight bars one and two, the above-mentioned rib one is arranged obliquely and its two ends are respectively fixed to the steel bar one and the steel bar two, the above-mentioned rib two is arranged perpendicular to the steel bar one, a plurality of ribs one and two are alternately arranged along the length direction of the steel bar one and a plurality of ribs one and two are connected end to end.

[0019] The continuously alternately arranged reinforcing bars 1 and 2 can stably connect the reinforcing bars 1 and 2 together.

[0020] In the above-mentioned four-corner steel bar truss composite plate, the reinforcing bars between steel bar one and steel bar two are a plurality of straight bars two, and the plurality of bars two are evenly distributed along the length direction of steel bar one and the two ends of the bars two are respectively vertically fixed to the sides of steel bar one and steel bar two.

[0021] The continuous and adjacently arranged reinforcement bars 2 can stably connect the reinforcement bars 1 and 2 together.

[0022] In the above-mentioned four-corner steel bar truss composite plate, the reinforcing ribs between the steel bar one and the steel bar three include straight rib three and rib four, the above-mentioned rib three is arranged obliquely and its two ends are respectively fixed to the steel bar one and the steel bar three, the above-mentioned rib four is arranged perpendicular to the steel bar one, a plurality of ribs three and rib four are alternately arranged along the length direction of the steel bar one and a plurality of ribs three and rib four are connected end to end.

[0023] The ribs three and four that are continuously and alternately connected can stably connect the steel bar one and the steel bar three together.

[0024] In the above-mentioned four-corner steel bar truss composite plate, the reinforcing bars between the steel bar two and the steel bar four include straight bars five and six, the above-mentioned bar five is arranged obliquely and its two ends are respectively fixed to the steel bar two and the steel bar four, the above-mentioned bar six is ​​arranged perpendicular to the steel bar two, a plurality of bars five and six are alternately arranged along the length direction of the steel bar one and a plurality of bars five and six are connected end to end.

[0025] The continuous and alternating connection of the reinforcement bars five and six can stably connect the reinforcement bars two and four together.

[0026] Compared with the prior art, the four-corner steel bar truss composite plate changes the truss form of the triangular truss composite plate, adopts a four-corner truss, and the upper two steel bar chords and webs form a composite truss. Compared with the combination of one chord and webs on the upper part of the ordinary triangular steel bar truss composite plate, the upper chord's compressive capacity is greatly improved, the overall rigidity of the composite plate is greater, and the on-site support spacing can be >3 meters. It can meet the requirements of "support-free composite plates" stipulated in Shanghai Construction Materials

[2019] No. 765 and Shanghai Construction Materials

[2021] No. 584. The correction coefficient can be taken as 0.55 when calculating the prefabrication rate, which greatly reduces the support cost. When the support spacing becomes larger, the on-site construction is more convenient, efficient, and safer.

[0027] The four-corner truss can be intelligently manufactured using automated equipment, and is lightweight. Compared with the ribbed triangular truss and steel tube truss, the prefabricated composite panels have fewer processes when produced in the factory, and are easy for workers to place and operate. Compared with steel tubes and concrete ribs, the cast-in-place area occupies less space, and there is more space on site for placing upper steel bars and equipment pipelines, making construction more convenient.

[0028] At the same time, since the truss components are respectively embedded in the base plate and the panel, the stability of the entire composite plate is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the cross-sectional structure of the four-corner reinforced steel truss composite slab.

[0030] Figure 2 It is a three-dimensional structural schematic diagram of the truss assembly in the four-corner steel bar truss composite plate.

[0031] Figure 3 It is a schematic diagram of the local structure of the four-corner reinforced steel truss composite slab.

[0032] In the figure, 1, bottom plate; 2, panel; 3, steel bar one; 4, steel bar two; 5, steel bar three; 6, steel bar four; 7, reinforcement bar one; 8, reinforcement bar two; 9, reinforcement bar three; 10, reinforcement bar four; 11, reinforcement bar five; 12, reinforcement bar six. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0036] like Figure 1 As shown, the four-corner steel bar truss composite slab includes a base plate 1, a panel 2 and a truss assembly. The base plate 1 and the panel 2 are both made of concrete materials, and the truss assembly is wrapped between the base plate 1 and the panel 2.

[0037] like Figure 1 and Figure 2 and Figure 3 As shown, the truss assembly includes steel bar 1 3, steel bar 2 4, steel bar 3 5, steel bar 4 6 and reinforcing ribs. The steel bar 1 3 is adjacent to the steel bar 2 4 and parallel to each other. The steel bar 3 5 is adjacent to the steel bar 4 6 and parallel to each other. The steel bar 3 5 is located directly below the steel bar 1 3. The steel bar 4 6 is located directly below the steel bar 2 4. Reinforcing ribs are provided between the steel bar 1 3 and the steel bar 2 4 along their length direction, between the steel bar 1 3 and the steel bar 3 5 along their length direction, and between the steel bar 2 4 and the steel bar 4 6 along their length direction.

[0038] The spacing dimension between the steel bar 1 3 and the steel bar 3 5 is A, and the dimension between the steel bar 2 4 and the steel bar 4 6 is B, and A and B are equal.

[0039] The steel bar three 5 is arranged parallel to the steel bar one 3.

[0040] The steel bar 4 6 is arranged parallel to the steel bar 2 4.

[0041] The reinforcing bars between the steel bar 1 3 and the steel bar 2 4 include straight bars 1 7 and 8, the above-mentioned rib 1 7 is arranged obliquely and its two ends are respectively fixed to the steel bar 1 3 and the steel bar 2 4, the above-mentioned rib 2 8 is arranged perpendicular to the steel bar 1 3, a plurality of ribs 1 4 and ribs 2 5 are alternately arranged along the length direction of the steel bar 1, and a plurality of ribs 1 7 and ribs 2 8 are connected end to end.

[0042] According to the actual situation, the reinforcement bar 2 can also be used alone between the reinforcement bar 1 3 and the reinforcement bar 4, that is:

[0043] The reinforcing bars between the steel bar 1 3 and the steel bar 2 4 are a plurality of straight bars 2 8 , which are evenly distributed along the length direction of the steel bar 1 3 and the two ends of the bars 2 8 are respectively vertically fixed to the sides of the steel bar 1 3 and the steel bar 2 4 .

[0044] The reinforcing bars between the steel bar 1 3 and the steel bar 3 5 include straight bars 3 9 and 4 10, the rib 3 9 is arranged obliquely and its two ends are respectively fixedly connected to the steel bar 1 3 and the steel bar 3 5, the rib 4 10 is arranged perpendicular to the steel bar 1 3, a plurality of ribs 3 9 and ribs 4 10 are alternately arranged along the length direction of the steel bar 1 3 and a plurality of ribs 3 9 and ribs 4 10 are connected end to end.

[0045] The reinforcing bars between the steel bar 2 4 and the steel bar 4 6 include straight bars 5 11 and 6 12, the rib 5 11 is arranged obliquely and its two ends are respectively fixedly connected to the steel bar 2 4 and the steel bar 4 6, the rib 6 12 is arranged perpendicular to the steel bar 2 4, a plurality of ribs 5 11 and ribs 6 12 are alternately arranged along the length direction of the steel bar 1 3 and a plurality of ribs 5 11 and ribs 6 12 are connected end to end.

[0046] In the four-corner steel bar truss composite plate, the lower part of the truss assembly is embedded in the bottom plate, and the upper part of the truss assembly is embedded in the panel.

[0047] Due to the action of three reinforcing bars, the truss assembly has steel bar one stably connected to steel bar two, steel bar one stably connected to steel bar three, and steel bar two stably connected to steel bar four.

[0048] In the cross-sectional direction of the entire truss assembly, four steel bars are arranged in a rectangular distribution.

[0049] Therefore, steel bars 2 and 4 can be stably connected in the bottom layer, and steel bars 1 and 3 can be stably connected in the surface layer.

[0050] It can be seen that the bottom plate and the panel can be stably connected together under the action of the truss assembly.

[0051] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A four-corner steel bar truss composite plate, comprising a bottom plate, a face plate and a truss assembly, wherein the bottom plate and the face plate are both made of concrete, and the truss assembly is wrapped between the bottom plate and the face plate, characterized in that: The truss assembly includes steel bar 1, steel bar 2, steel bar 3, steel bar 4 and reinforcing ribs. The steel bar 1 is arranged adjacent to the steel bar 2 in parallel on the left and right sides, the steel bar 3 is arranged adjacent to the steel bar 4 in parallel on the left and right sides, the steel bar 3 is located directly below the steel bar 1, and the steel bar 4 is located directly below the steel bar 2. Reinforcing ribs are provided along the length direction between the steel bar 1 and the steel bar 2, along the length direction between the steel bar 1 and the steel bar 3, and along the length direction between the steel bar 2 and the steel bar 4.

2. The four-corner steel bar truss composite plate according to claim 1, characterized in that: The spacing dimension between the steel bar one and the steel bar three is A, the dimension between the steel bar two and the steel bar four is B, and A and B are equal.

3. The four-corner steel bar truss composite plate according to claim 2, characterized in that: The steel bar three is arranged parallel to the steel bar one.

4. The four-corner steel bar truss composite plate according to claim 3, characterized in that: The steel bar four is arranged in parallel with the steel bar two.

5. The four-corner steel bar truss composite slab according to claim 4, characterized in that: The reinforcing bars between the steel bar 1 and the steel bar 2 include straight bars 1 and 2, the rib 1 is arranged obliquely and its two ends are respectively fixedly connected to the steel bar 1 and the steel bar 2, the rib 2 is arranged perpendicular to the steel bar 1, a plurality of ribs 1 and ribs 2 are alternately arranged along the length direction of the steel bar 1 and a plurality of ribs 1 and ribs 2 are connected end to end.

6. The four-corner steel bar truss composite plate according to claim 4, characterized in that: The reinforcing bars between the steel bars 1 and 2 are a plurality of straight bars 2, which are evenly distributed along the length direction of the steel bars 1 and the two ends of the bars 2 are respectively vertically fixed to the sides of the steel bars 1 and 2.

7. The four-corner steel bar truss composite slab according to claim 5, characterized in that: The reinforcing bars between the steel bar one and the steel bar three include straight bars three and four, the above-mentioned bar three is arranged obliquely and its two ends are respectively fixedly connected to the steel bar one and the steel bar three, the above-mentioned bar four is arranged perpendicular to the steel bar one, a plurality of bars three and bars four are alternately arranged along the length direction of the steel bar one and a plurality of bars three and bars four are connected end to end.

8. The four-corner steel bar truss composite plate according to claim 7, characterized in that: The reinforcing bars between the steel bar 2 and the steel bar 4 include straight bars 5 and 6, the rib 5 is arranged obliquely and its two ends are respectively fixedly connected to the steel bar 2 and the steel bar 4, the rib 6 is arranged perpendicular to the steel bar 2, a plurality of ribs 5 and ribs 6 are alternately arranged along the length direction of the steel bar 1 and a plurality of ribs 5 and ribs 6 are connected end to end.

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