Bidirectional laminated slab with part of reinforcing steel bars extending out

Abstract

The utility model discloses a two-way laminated slab of extending part reinforcing steel bars, which comprises a two-way laminated slab, a first non-extending area, a first extending area and a second non-extending area are sequentially formed on the two-way laminated slab along the length direction, a plurality of first extending reinforcing steel bars are arranged in the first extending area, and a plurality of second extending reinforcing steel bars are arranged in the second extending area. The two ends of the first extending steel bars extend out of the two long edges of the two-way laminated slab, and the multiple first non-extending steel bars are arranged in the first non-extending area and the second non-extending area; a third non-extending area, a second extending area and a fourth non-extending area are sequentially formed on the two-way laminated slab in the width direction, a plurality of second extending steel bars are arranged in the second extending area, and the two ends of each second extending steel bar extend to the outer portions of the two short edges of the two-way laminated slab. And a plurality of second non-extending steel bars are arranged in the third non-extending area and the fourth non-extending area. According to the utility model, the problems of high construction cost and low construction efficiency of a bidirectional laminated slab connection mode in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled components, in particular to a bidirectional composite plate with a portion of steel bars extending out. Background Art

[0002] In recent years, with the increasing demand and requirements for the construction industry, prefabricated buildings have become a hot topic in the construction industry. As an emerging construction method, it has many advantages such as fast, environmentally friendly, and energy-saving, and has attracted much attention. In prefabricated buildings, two-way composite slabs are often used as floor slabs.

[0003] The connection between the two-way composite plates in the prior art is often achieved by connecting with reinforcement on all four sides. The reinforcement on all four sides of the composite plate needs to extend out of the edge of the prefabricated component. To extend all the reinforcement, holes need to be opened on the side mold of the composite plate, which makes the versatility of the composite plate processing mold low. The two-way composite plates in the prior art can also be connected in a way that no reinforcement is provided on all four sides. This method requires additional lap reinforcement and transverse distribution reinforcement at the joints on site, and the thickness of the cast-in-place plate is correspondingly increased to ensure the strength of the connection part. The connection method between the two-way composite plates in the prior art has the problems of high construction cost and low construction efficiency. Therefore, it is necessary to provide a two-way composite plate with some reinforcement extending out, which can solve the problems of high construction cost and low construction efficiency of the two-way composite plate connection method in the prior art. Summary of the invention

[0004] The utility model aims to provide a bidirectional composite plate with a part of steel bars extending out, which can solve the problems of high construction cost and low construction efficiency of the bidirectional composite plate connection method in the prior art.

[0005] The utility model is achieved in this way:

[0006] A two-way composite plate with extended steel bars comprises a two-way composite plate, wherein the two-way composite plate is sequentially formed with a first non-extending area, a first extending area, and a second non-extending area along the length direction, a plurality of first extending steel bars are arranged at intervals in the first extending area, and both ends of the first extending steel bars extend to the outside of the two long sides of the two-way composite plate, and a plurality of first non-extending steel bars are arranged at intervals in the first non-extending area and the second non-extending area; the two-way composite plate is sequentially formed with a third non-extending area, a second extending area, and a fourth non-extending area along the width direction, a plurality of second extending steel bars are arranged at intervals in the second extending area, and both ends of the second extending steel bars extend to the outside of the two short sides of the two-way composite plate, and a plurality of second non-extending steel bars are arranged at intervals in the third non-extending area and the fourth non-extending area.

[0007] The width of the first protruding area is half of the width of the bidirectional laminated plate, and the width of the first non-protruding area and the width of the second non-protruding area are both 1 / 4 of the width of the bidirectional laminated plate.

[0008] The width of the second extended area is half of the length of the bidirectional laminated plate, and the width of the third non-extended area and the width of the fourth non-extended area are both 1 / 4 of the length of the bidirectional laminated plate.

[0009] The first non-extending area, the second non-extending area, the third non-extending area and the fourth non-extending area overlap at four corners of the bidirectional composite plate, and a plurality of additional steel bars are obliquely arranged in each overlapping area.

[0010] One end of the additional steel bars is distributed within a length range of 1 / 4-1 / 8 from the end point on the long side of the two-way composite plate, and the other end of the additional steel bars is distributed within a length range of 1 / 4-1 / 8 from the end point on the short side of the two-way composite plate.

[0011] The specifications of the additional steel bars are consistent with the maximum specifications of the bottom reinforcement of the two-way composite slab.

[0012] The plurality of additional steel bars are overlapped on the second non-extending steel bars.

[0013] The first protruding steel bar and the first non-protruding steel bar are arranged in parallel in the same plane, the second protruding steel bar and the second non-protruding steel bar are arranged in parallel in the same plane, and the second protruding steel bar and the second non-protruding steel bar are overlapped on the first protruding steel bar and the first non-protruding steel bar.

[0014] The steel bar extension lengths of the first and second extended steel bars are greater than the steel bar extension lengths of the bidirectional composite slab with all the steel bars extended.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model is provided with a first protruding steel bar and a second protruding steel bar, which protrude from the middle of the edge of the two-way composite plate and extend the protruding length of the first protruding steel bar and the second protruding steel bar, which can not only meet the connection and anchoring requirements of the two-way composite plate, but also reduce the number of openings on the side formwork of the composite plate, and can improve the turnover rate of the composite plate formwork and the construction economy.

[0017] 2. The utility model is provided with the first non-protruding steel bar, the second non-protruding steel bar and the additional steel bar, the first non-protruding steel bar and the second non-protruding steel bar do not protrude from the two-way composite slab, thereby reducing the number of holes in the side formwork of the composite slab, and improving the structural strength of the non-protruding steel bar portion, i.e., the corners of the two-way composite slab, by means of the additional steel bars. There is no need to add lap steel bars and transverse distribution bars at the joints on site, and there is no need to increase the thickness of the cast-in-place floor slab, so the construction is more convenient and the construction efficiency of the two-way composite slab can be improved.

[0018] 3. The utility model takes into account both construction economy and convenience through the structural form of partially extending steel bars, and can effectively solve the problems of low versatility of processing molds for composite slabs with reinforcement on all four sides and low efficiency of production, construction and installation; it can also solve the problem of cumbersome on-site additional reinforcement construction for composite slabs without reinforcement on all four sides, and the need to increase the thickness of the floor slab and the number of steel bars, and has great application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of reinforcement arrangement of a bidirectional composite slab with a portion of steel bars extending out of the utility model;

[0020] Figure 2 yes Figure 1 Sectional view of AA in the middle;

[0021] Figure 3 yes Figure 2 A partial enlarged view of .

[0022] In the figure, 1 is the first protruding steel bar, 2 is the second protruding steel bar, 3 is the first non-protruding steel bar, 4 is the second non-protruding steel bar, 5 is the additional steel bar, and 6 is the two-way composite plate. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Please see attached Figure 1 To Attachment Figure 3 A two-way composite plate with extended steel bars includes a two-way composite plate 6, wherein the two-way composite plate 6 is sequentially formed with a first non-extending area, a first extending area, and a second non-extending area along the length direction, a plurality of first extending steel bars 1 are arranged at intervals in the first extending area, and both ends of the first extending steel bars 1 extend to the outside of the two long sides of the two-way composite plate 6, and a plurality of first non-extending steel bars 3 are arranged at intervals in the first non-extending area and the second non-extending area; the two-way composite plate 6 is sequentially formed with a third non-extending area, a second extending area, and a fourth non-extending area along the width direction, a plurality of second extending steel bars 2 are arranged at intervals in the second extending area, and both ends of the second extending steel bars 2 extend to the outside of the two short sides of the two-way composite plate 6, and a plurality of second non-extending steel bars 4 are arranged at intervals in the third non-extending area and the fourth non-extending area.

[0025] The four sides of the two-way composite plate 6 adopt a partial reinforcement structure in which part of the steel bars are extended in the middle, that is, the first extended steel bar 1 and the second extended steel bar 2 extend out of the two-way composite plate 6 respectively, and the side steel bars do not extend out, that is, the first non-extending steel bar 3 and the second non-extending steel bar 4 do not extend out of the two-way composite plate 6. Compared with the two-way composite plate structure in which all the steel bars are extended in the prior art, the number of protruding steel bars can be greatly reduced, thereby reducing the number of openings in the side formwork of the composite plate, improving the versatility of the composite plate processing mold, and is also beneficial to improving the turnover rate and construction economy of the composite plate formwork.

[0026] The parts of the first protruding steel bars 1 and the second protruding steel bars 2 that extend out of the two-way composite slab 6 can be used to connect two adjacent two-way composite slabs 6. Compared with the traditional two-way composite slabs without any protruding steel bars, there is no need to add lap steel bars and transverse distribution bars at the joints on site, nor is there a need to increase the thickness of the cast-in-place floor slab. The construction is more convenient and the construction efficiency of the two-way composite slab can be improved.

[0027] The bidirectional composite slab 6 with a portion of the steel bars extending out takes into account both construction economy and convenience, is conducive to improving the construction efficiency of the bidirectional composite slab 6, reducing construction costs, and has a greater application prospect.

[0028] Please see attached Figure 1 The width of the first protruding area is half of the width (Lb) of the bidirectional laminated plate 6, and the width of the first non-protruding area and the width of the second non-protruding area are both 1 / 4 of the width of the bidirectional laminated plate 6.

[0029] The bidirectional composite plate 6 is usually a symmetrical structure of a rectangle or a square. The first protruding area is arranged in the middle of the width direction of the bidirectional composite plate 6, and the first non-protruding area and the second non-protruding area are symmetrically arranged on both sides of the first protruding area. While ensuring that the bidirectional composite plate 6 can be reliably connected through the first protruding steel bar 1, the force on both sides in the width direction is uniform.

[0030] Please see attached Figure 1 The width of the second extending area is half of the length (La) of the bidirectional laminated plate 6, and the width of the third non-extending area and the width of the fourth non-extending area are both 1 / 4 of the length of the bidirectional laminated plate 6.

[0031] The second extended area is arranged in the middle of the length direction of the bidirectional composite plate 6, and the third non-extended area and the fourth non-extended area are symmetrically arranged on both sides of the second extended area, ensuring that the bidirectional composite plate 6 can be reliably connected through the second extended steel bar 2 while ensuring uniform force on both sides in the length direction.

[0032] Please see attached Figure 1The first non-extending area, the second non-extending area, the third non-extending area and the fourth non-extending area overlap at the four corners of the bidirectional composite plate 6, and a plurality of additional steel bars 5 are obliquely arranged in each overlapping area.

[0033] By providing additional steel bars 5, the structural strength of the side edges of the two-way composite slab 6 can be ensured by providing additional steel bars 5 because the steel bars do not extend out of the first non-extending area, the second non-extending area, the third non-extending area and the fourth non-extending area.

[0034] Please see attached Figure 1 One end of the several additional steel bars 5 is distributed within a length range of 1 / 4-1 / 8 from the end point on the long side of the two-way composite plate 6, and the other end of the several additional steel bars 5 is distributed within a length range of 1 / 4-1 / 8 from the end point on the short side of the two-way composite plate 6.

[0035] Please see attached Figure 3 The plurality of additional steel bars 5 are overlapped on the second non-extending steel bars 4 to ensure that the additional steel bars 5 are installed firmly and reliably.

[0036] Please see attached Figure 1 The specification of the additional steel bars 5 is consistent with the maximum specification of the bottom reinforcement of the two-way composite plate 6, which can avoid the problem of strength reduction at the corners of the two-way composite plate 6 due to the lack of steel bars.

[0037] Please see attached Figure 2 and attached Figure 3 The first protruding steel bar 1 and the first non-protruding steel bar 3 are arranged in parallel in the same plane, the second protruding steel bar 2 and the second non-protruding steel bar 4 are arranged in parallel in the same plane, and the second protruding steel bar 2 and the second non-protruding steel bar 4 are overlapped on the first protruding steel bar 1 and the first non-protruding steel bar 3.

[0038] The first protruding steel bar 1 and the first non-protruding steel bar 3 form a layer of steel mesh structure, and the second protruding steel bar 2 and the second non-protruding steel bar 4 form another layer of steel mesh structure. The two layers of steel mesh structure are welded together to form a double-layer steel mesh structure in the two-way composite plate 6 to ensure the structural strength of the two-way composite plate 6.

[0039] The steel bar extension lengths of the first protruding steel bars 1 and the second protruding steel bars 2 are greater than the steel bar extension lengths of the bidirectional composite slab in which all the steel bars are extended in the prior art.

[0040] Preferably, according to the standard of the extension length of steel bars of the bidirectional composite plate with all the steel bars extended in the prior art, the extension length of the first extended steel bar 1 and the second extended steel bar 2 of the utility model is extended by 20% compared with the prior art, thereby increasing the connection anchoring length and ensuring the connection strength and construction quality of the bidirectional composite plate 6.

[0041] Please see attached Figure 1 To Attachment Figure 3 , the manufacturing method of the utility model is:

[0042] According to the design requirements of the bidirectional composite slab 6 such as the load-bearing capacity and size, the first protruding steel bars 1, the second protruding steel bars 2, the first non-protruding steel bars 3 and the second non-protruding steel bars 4 are selected with appropriate specifications, lengths and quantities.

[0043] The first protruding steel bar 1 is arranged in the first protruding area in the middle of the two-way laminated plate 6, and the first non-protruding steel bar 3 is arranged in the first non-protruding area and the second non-protruding area on both sides of the first protruding area. The second protruding steel bar 2 is arranged in the second protruding area in the middle of the two-way laminated plate 6 and overlapped on the first protruding steel bar 1 and the first non-protruding steel bar 3. The second non-protruding steel bar 4 is arranged in the third non-protruding area and the fourth non-protruding area on both sides of the second protruding area and overlapped on the first protruding steel bar 1 and the first non-protruding steel bar 3.

[0044] The additional steel bars 5 are steel bars of the same maximum specification as the bottom reinforcement of the two-way laminated plate 6, and the additional steel bars 5 are overlapped on the second non-extending steel bars 4 to ensure the integrity of the steel bar structure. Preferably, six additional steel bars 5 are arranged in the overlapping areas of the four corners of the two-way laminated plate 6, and the distribution area of ​​the additional steel bars 5 is within the range of 1 / 4-1 / 8 of the length of the side of the two-way laminated plate 6.

[0045] When connecting two adjacent two-way composite plates 6, for the two-way composite plates in the prior art in which all the steel bars are extended, since the utility model is in the form of partially extended steel bars, the extended length of the first extended steel bar 1 and the second extended steel bar 2 is extended by 20% compared with the prior art to ensure that the extended length of the first extended steel bar 1 and the second extended steel bar 2 can meet the connection strength requirements when anchored in the support. Since there are no extended steel bars in the first non-extending area, the second non-extending area, the third non-extending area and the fourth non-extending area, the strength of the corners of the two-way composite plate 6 after connection is ensured by additional steel bars 5.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bidirectional composite slab with a portion of steel bars extending out, characterized in that: The invention comprises a bidirectional laminated plate (6), wherein the bidirectional laminated plate (6) is sequentially formed with a first non-extending area, a first extending area and a second non-extending area along the length direction, a plurality of first extending steel bars (1) are arranged at intervals in the first extending area, and both ends of the first extending steel bars (1) extend to the outside of the two long sides of the bidirectional laminated plate (6), and a plurality of first non-extending steel bars (3) are arranged at intervals in the first non-extending area and the second non-extending area; the bidirectional laminated plate (6) is sequentially formed with a third non-extending area, a second extending area and a fourth non-extending area along the width direction, a plurality of second extending steel bars (2) are arranged at intervals in the second extending area, and both ends of the second extending steel bars (2) extend to the outside of the two short sides of the bidirectional laminated plate (6), and a plurality of second non-extending steel bars (4) are arranged at intervals in the third non-extending area and the fourth non-extending area.

2. The bidirectional composite slab with extended steel bars according to claim 1, characterized in that: The width of the first protruding area is half the width of the bidirectional laminated plate (6), and the width of the first non-protruding area and the width of the second non-protruding area are both 1 / 4 of the width of the bidirectional laminated plate (6).

3. The bidirectional composite slab with extended steel bars according to claim 1, characterized in that: The width of the second protruding area is half the length of the bidirectional laminated plate (6), and the width of the third non-protruding area and the width of the fourth non-protruding area are both 1 / 4 of the length of the bidirectional laminated plate (6).

4. The bidirectional composite slab with extended steel bars according to claim 1, characterized in that: The first non-protruding area, the second non-protruding area, the third non-protruding area and the fourth non-protruding area overlap at the four corners of the bidirectional composite plate (6), and a plurality of additional steel bars (5) are arranged obliquely in each overlapping area.

5. The bidirectional composite slab with extended steel bars according to claim 4, characterized in that: One end of the plurality of additional steel bars (5) is distributed within a length range of 1 / 4-1 / 8 of the distance from the end point on the long side of the bidirectional composite plate (6), and the other end of the plurality of additional steel bars (5) is distributed within a length range of 1 / 4-1 / 8 of the distance from the end point on the short side of the bidirectional composite plate (6).

6. The bidirectional composite slab with the extended steel bars according to claim 4 or 5, characterized in that: The specifications of the additional steel bars (5) are consistent with the maximum specifications of the bottom reinforcement of the bidirectional composite slab (6).

7. The bidirectional composite slab with extended steel bars according to claim 4 or 5, characterized in that: The plurality of additional steel bars (5) are overlapped on the second non-protruding steel bars (4).

8. The bidirectional composite slab with extended steel bars according to claim 1, characterized in that: The first protruding steel bar (1) and the first non-protruding steel bar (3) are arranged in parallel in the same plane, the second protruding steel bar (2) and the second non-protruding steel bar (4) are arranged in parallel in the same plane, and the second protruding steel bar (2) and the second non-protruding steel bar (4) are overlapped on the first protruding steel bar (1) and the first non-protruding steel bar (3).

9. The bidirectional composite slab with extended steel bars according to claim 1 or 8, characterized in that: The steel bar extension lengths of the first protruding steel bars (1) and the second protruding steel bars (2) are greater than the steel bar extension lengths of the bidirectional composite plate with all the steel bars extended.

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