CN217480885U - Plugging structure for reserved hole of laminated slab - Google Patents
Plugging structure for reserved hole of laminated slab Download PDFInfo
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- CN217480885U CN217480885U CN202221531221.8U CN202221531221U CN217480885U CN 217480885 U CN217480885 U CN 217480885U CN 202221531221 U CN202221531221 U CN 202221531221U CN 217480885 U CN217480885 U CN 217480885U
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Abstract
The utility model belongs to the technical field of the shutoff of floor entrance to a cave especially, relate to a shutoff structure of entrance to a cave is reserved to superimposed sheet. The prefabricated floor slab comprises a prefabricated floor slab layer, a cast-in-situ layer, double-layer reinforcing steel bar meshes and a plugging concrete layer, wherein a first hole is formed in the prefabricated floor slab layer, a plurality of connecting keys are embedded in the prefabricated floor slab layer at the first hole and the periphery at intervals, the cast-in-situ layer is poured on the prefabricated floor slab layer, second holes are reserved around the first hole in the cast-in-situ layer, the second holes and the first hole form a step-shaped hole, the reinforcing steel bar meshes are fixedly connected with the connecting keys and are filled in the first hole and the second hole, the plugging concrete layer is poured in the step-shaped hole, and the upper surface and the lower surface of the plugging concrete layer are respectively flush with the upper surface of the second hole and the lower surface of the first hole. The utility model is used for the problem of the easy seepage of good and later stage use of bar planting effect when reserving entrance to a cave shutoff such as unwrapping wire hole, pump line hole in solving the superimposed sheet.
Description
Technical Field
The utility model belongs to the technical field of the prefabricated superimposed sheet of floor reserves entrance to a cave shutoff, especially, relate to a superimposed sheet reserves the block structure of entrance to a cave.
Background
Have a entrance to a cave to be the unwrapping wire hole in the time of high-rise building construction, main purpose be exactly will be with the coordinate of bottom lead to the one deck, just so can make wall body and door and window reach unification, and is same, erects concrete pipeline between the floor for convenient construction and can set up the pump line hole, and these entrances need the shutoff after the construction usually.
In recent years, with the more and more remarkable improvement of open results, the national housing urban and rural construction department vigorously pushes the green building assembly development pace. The assembly type building is an important breakthrough field of the future building industry, and long-term, continuous and rapid development of the building market can be promoted through technical level promotion and large-scale development of the assembly type building. In the assembly type building, the application of the laminated slab is one of the more extensive applications in the building structure of China at present.
At present, according to the plugging of the traditional process, bar planting needs to be carried out on the periphery of a hole, the operation difficulty is high, the forming effect is poor, the size of a general paying-off hole or a pump pipe hole is small (about 200mm generally), when the bar is planted, because a drilling machine has a certain size, the horizontal hole drilling difficulty is high, and the scheme of field solution is generally to drill holes in an inclined direction. In the drilling process, the original structural plate is damaged to a certain extent due to the vibration of a drilling machine. In addition, the plugging according to the traditional process has poor waterproof and anti-seepage effects, and the seams between the new concrete and the old concrete are straight through seams with straight upper and straight lower parts, so that the waterproof effect is poor, particularly, the hole is obviously reserved in a room with water, and the periphery of the hole generally has leakage points.
SUMMERY OF THE UTILITY MODEL
This application combines the wide application of current superimposed sheet in the building engineering, and the technical problem that the embodiment will be solved lies in overcoming the not enough of prior art, provides a block structure of superimposed sheet reservation entrance to a cave for the good and easy seepage problem of bar planting effect when solving the entrance to a cave shutoff such as unwrapping wire hole, pump line hole.
The technical scheme for solving the technical problems in the embodiment of the application is as follows: a plugging structure of opening is reserved to superimposed sheet, it includes:
the prefabricated bottom plate layer is provided with a first hole, and a plurality of connecting keys are embedded in the prefabricated bottom plate layer at intervals at the periphery of the first hole;
the cast-in-place layer is poured on the prefabricated bottom plate layer and forms a laminated slab with the prefabricated bottom plate layer, second holes are reserved around the first holes in the cast-in-place layer, and the second holes and the first holes form step-shaped holes;
the double-layer reinforcing steel bar net piece is fixedly connected with the connecting key and is filled in the first hole and the second hole;
and the blocking concrete layer is poured in the step-shaped hole, and the upper surface and the lower surface of the blocking concrete layer are respectively flush with the upper surface of the second hole and the lower surface of the first hole.
Compared with the prior art, the technical scheme has the following beneficial effects:
the first hole of the prefabricated bottom plate layer and the connecting keys arranged on the periphery of the first hole are fixed with the reinforcing steel bar net piece, the blocking concrete layer is filled in the step-shaped hole, the first hole and the connecting keys and the reinforcing steel bar net piece are connected with the prefabricated bottom plate layer and the cast-in-place layer together, the overall cooperativity is good, meanwhile, the damage of the conventional bar-planting drilling to floors is avoided, in addition, the cast-in-place layer and the prefabricated bottom plate layer form the step-shaped hole, the water permeation path is prolonged, and the leakage condition is reduced
Furthermore, the connecting keys are strip-shaped connecting keys, and the bottoms of the connecting keys are bound and fixed with bottom ribs which are arranged in the prefabricated floor layer in a staggered mode.
Further, the top of the connecting key is higher than the upper surface of the first hole and lower than the upper surface of the second hole.
The height requirement is that the position of the upper reinforcing steel bar net piece is supported, so that the upper reinforcing steel bar net piece meets the thickness requirement of a concrete protective layer.
Furthermore, the connecting key is a strip-shaped groove structure made of steel bars so as to be suitable for openings with different sizes.
Further, the radial distance between the first hole and the edge of the second hole is not less than the steel bar anchoring length La of one unit.
Furthermore, waterproof pieces are arranged at corners of four sides of the step surface of the step-shaped hole.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. construction is convenient, has utilized the characteristics that the prefabricated bottom plate of assembled of processing production in mill and cast-in-place layer are not pour simultaneously, and the connecting key is pre-buried and the convenience is reserved at the job site entrance to a cave.
2. The method avoids the damage of the original structure, saves the bar planting process in the traditional method during the plugging construction, avoids the secondary damage caused by the drilling of the original structure plate, and ensures the forming effect easily.
3. The stress is reasonable, the design of the prefabricated bottom plate is realized, the reinforcement of the lower part of the reinforcing steel bars around the opening is considered during the production of a manufacturer, the stress at the bottom of the prefabricated plate is not problematic, the height of the connecting key is utilized at the upper part, the double-layer reinforcing steel bars are arranged in the connecting key, the position of the upper layer reinforcing steel bar net piece can be ensured, the size of the opening of the cast-in-place layer is 2La larger than that of the opening of the bottom plate, and the requirement of the anchoring length of the reinforcing steel bars can be met.
4. The wholeness is better, because set up the connector link between new and old concrete, upper and lower reinforcing bar net piece can be through the connector link connection for new and old concrete forms whole, collaborative work.
5. The waterproof performance is enhanced, the stepped holes are utilized, the permeation path of water is increased, the water stop belts can be arranged at the corners, the permeation probability can be effectively reduced, the roughening treatment is carried out on the surfaces of the prefabricated bottom plates, the connection between new concrete and old concrete is enhanced, and the waterproof effect is also improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a connection key according to an embodiment of the present invention.
Fig. 2 is a schematic top view of the present invention.
Fig. 3 is a schematic overall structure diagram of an embodiment of the present invention.
Reference numerals:
1. prefabricating a bottom plate layer; 2. a first opening;
3. a connecting bond;
4. a cast-in-place layer; 5. a second opening;
6. reinforcing the reinforcing mesh sheet;
7. blocking the concrete layer;
8. a water stop;
9. and (7) bottom ribs.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1-3, an embodiment of the present invention provides a plugging structure for a reserved hole of a laminated slab, which includes: prefabricated bottom plate layer 1, cast-in-place layer 4, double-deck reinforcing bar net piece 6 and shutoff concrete layer 7.
Seted up first entrance to a cave 2 on prefabricated floor layer 1, violently indulge crisscross a plurality of base muscle 9 that are provided with in prefabricated floor layer 1, prefabricated floor layer 1 in a plurality of tie key 3 have been buried underground to first entrance to a cave 2 and peripheral interval, and concrete bond key 3 is in between first entrance to a cave 2 and the second entrance to a cave 5, and first entrance to a cave 2 is for lining up the square entrance to a cave of prefabricated floor layer 1, specifically, tie key 3 is strip structure tie key 3, the bottom of tie key 3 with the crisscross base muscle 9 ligature that sets up in prefabricated floor layer 1 is fixed, and the 3 lower part of tie key is connected with base muscle 9 buried underground in prefabricated floor layer 1, and the lower part of tie key 3 also buries underground with prefabricated floor layer 1, and tie key 3 sets up in first entrance to a cave 2 periphery.
The connecting key 3 is a strip-shaped groove-shaped structure made of reinforcing steel bars according to a certain modulus, can be made of HRB 400-grade reinforcing steel bars so as to be suitable for openings with different sizes, and specifically, the cross section of the groove-shaped structure can be a triangular or rectangular groove-shaped structure with other various openings facing downwards.
The cast-in-place layer 4 is poured on the prefabricated bottom plate layer 1, a laminated slab is formed by the cast-in-place layer 4 and the prefabricated bottom plate layer 1, a second hole 5 is reserved in the cast-in-place layer 4 around the first hole 2, the second hole 5 and the first hole 2 form a step-shaped hole, the opening of the second hole 5 is larger than that of the first hole 2, and the contour of the first hole 2 corresponds to the contour of the second hole 5 after being amplified in an equal ratio;
as shown in the figure, the radial distance between the edges of the first opening 2 and the second opening 5 is not less than the steel bar anchoring length La of one unit, so as to meet the requirement of the steel bar anchoring length.
The surface of the prefabricated floor layer 1, which is in contact with the pouring layer, is roughened, so that the connection between new and old concrete is enhanced, and the waterproof effect is improved.
Double-deck reinforcing bar net piece 6 with connector key 3 fixed connection, fill in first entrance to a cave 2 and second entrance to a cave 5, wherein, reinforcing bar net piece 6 is fixed the formation after arranging by the strengthening rib is violently indulged crisscross, and reinforcing bar net piece 6 sets up to two-layer at least, specifically can select according to actual requirement.
Wherein, set up a reinforcing bar net piece 6 in 3 crest positions of three hookup key, upper reinforcing bar net piece 6 arranges in 3 crest positions of hookup key promptly, with 3 binding connection of hookup key, sets up a reinforcing bar net piece 6 in 3 trough positions of three hookup key, and lower floor reinforcing bar net piece 6 arranges in 1 surface of prefabricated floor layer promptly, 3 trough positions of hookup key.
The plugging concrete layer 7 is poured in the stepped hole, the upper surface and the lower surface of the plugging concrete layer 7 are flush with the upper surface of the second hole 5 and the lower surface of the first hole 2 respectively, the plugging concrete layer 7 is filled in the whole stepped hole through the connecting keys 3 and the reinforcing steel bar net pieces 6 which are embedded in the prefabricated bottom plate layer 1, and the connecting keys 3 and the reinforcing steel bar net pieces 6 improve the overall structural strength of the plugging concrete layer 7, the prefabricated bottom plate layer 1 and the cast-in-place layer 4.
Specifically, the top of the connecting key 3 is higher than the upper surface of the first hole 2 and lower than the upper surface of the second hole 5, the position of the upper reinforcing mesh can be ensured by utilizing the height of the connecting key 3, reinforcing ribs are arranged in the plate, so that a plurality of layers of reinforcing mesh 6 are formed in the vertical direction of the stepped hole, the height requirement of the reinforcing mesh 6 is that the upper reinforcing mesh 6 is supported, the upper reinforcing mesh 6 meets the thickness requirement of the concrete protective layer, and the structural strength is improved.
The corners of the four sides of the stepped surface of the stepped hole are provided with waterproof pieces, the waterproof pieces can be stop water belts 8, and the waterproof pieces are arranged at the corners of the four sides of the stepped surface to form an annular waterproof structure, so that the waterproof effect of the whole plugging structure is further improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a shutoff structure of opening is reserved to superimposed sheet which characterized in that includes:
the prefabricated base plate layer is provided with a first hole, and a plurality of connecting keys are embedded at intervals at the periphery of the first hole of the prefabricated base plate layer;
the cast-in-place layer is poured on the prefabricated bottom plate layer and forms a laminated slab with the prefabricated bottom plate layer, a second hole is reserved around the first hole in the cast-in-place layer, and the second hole and the first hole form a step-shaped hole;
the double-layer reinforcing steel bar net piece is fixedly connected with the connecting key and is filled in the first hole and the second hole;
and the blocking concrete layer is poured in the stepped hole, and the upper surface and the lower surface of the blocking concrete layer are respectively flush with the upper surface of the second hole and the lower surface of the first hole.
2. The plugging structure for the reserved hole of the laminated slab as claimed in claim 1, wherein the connecting key is a strip-shaped connecting key, and the bottom of the connecting key is bound and fixed with bottom ribs arranged in the prefabricated floor layer in a staggered manner.
3. The structure for blocking a reserved hole of a laminated slab as claimed in claim 2, wherein the top of the connecting key is higher than the upper surface of the first hole and lower than the upper surface of the second hole.
4. The plugging structure for the reserved hole of the laminated slab as claimed in claim 2, wherein the connecting key is a bar-groove structure made of steel bars so as to be suitable for holes with different sizes.
5. The plugging structure for the reserved hole of the laminated slab as claimed in claim 1, wherein the radial distance between the first hole and the edge of the second hole is not less than one unit of steel bar anchoring length La.
6. The plugging structure for a reserved hole of a laminated slab as claimed in claim 1, wherein corners of four sides of the step surface of the stepped hole are provided with waterproof pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221531221.8U CN217480885U (en) | 2022-06-16 | 2022-06-16 | Plugging structure for reserved hole of laminated slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221531221.8U CN217480885U (en) | 2022-06-16 | 2022-06-16 | Plugging structure for reserved hole of laminated slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217480885U true CN217480885U (en) | 2022-09-23 |
Family
ID=83314467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221531221.8U Active CN217480885U (en) | 2022-06-16 | 2022-06-16 | Plugging structure for reserved hole of laminated slab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217480885U (en) |
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2022
- 2022-06-16 CN CN202221531221.8U patent/CN217480885U/en active Active
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