A hole plugging process and a plugging structure thereof

Abstract

The present application belongs to the floor hole plugging technical field, especially relates to a hole plugging process. It comprises the following steps: prefabricating a bottom layer with a first hole, pouring a cast-in-place layer on the bottom layer, reserving a second hole around the first hole in the cast-in-place layer, forming a stepped hole with the first hole and the second hole, waterproofing the corner of the four sides of the stepped hole, reinforcing the multilayer reinforcing rib mesh on the connecting key, processing the hole periphery and supporting the formwork under the hole to pour the concrete, curing the concrete, and removing the formwork after the concrete reaches a certain strength. The present application is used to solve the problems of poor effect of planting the reinforcing bar and easy leakage when plugging the hole of the wire laying hole and the pump pipe hole.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of floor hole plugging, and particularly relates to a hole plugging process and a plugging structure thereof. BACKGROUND

[0002] When a high-rise building is constructed, a hole is a threading hole, and the main purpose is to lead the coordinates of the bottom layer to the upper layer, so that the wall and the door and window can be unified. Similarly, in order to facilitate construction, a concrete conveying pipe is erected, and a pump pipe hole is opened. These holes need to be plugged after the construction is completed.

[0003] In recent years, with the increasingly remarkable achievements of reform and opening up, the Ministry of Housing and Urban-Rural Development of the People's Republic of China has vigorously promoted the development pace of green building assembly. The assembly building is an important breakthrough field of the future building industry. Through the improvement of the technical level of the assembly building and the scale development, the long-term, continuous and rapid development of the building market can be promoted. In the assembly building, the application of the composite board is one of the more widely used applications in the current building structure in China.

[0004] At present, according to the traditional process plugging, the anchor bar needs to be planted around the hole. The operation is difficult, the forming effect is poor, the threading hole or the pump pipe hole is generally small (generally about 200 mm), and the drilling machine has a certain size. When the anchor bar is planted, it is difficult to drill a horizontal hole. The general on-site solution is to drill a hole in a diagonal direction. In the drilling process, due to the vibration of the drilling machine, the original structure plate is damaged to some extent. In addition, according to the traditional process plugging, the waterproof and anti-leakage effect is poor. Because the joint between the new and old concrete is a straight up and down through joint, the waterproof effect is poor, especially the hole reserved in the water room is more obvious. There are generally leakage points around the hole. SUMMARY

[0005] The technical problem to be solved by the embodiments of the present application is to overcome the shortcomings of the prior art, and to provide a hole plugging process for solving the problems of poor anchor bar effect and easy leakage when plugging the threading hole, the pump pipe hole and the like.

[0006] The technical solution for solving the above technical problem by the embodiments of the present application is as follows: a hole plugging process, comprising the following steps:

[0007] A bottom plate layer with a first hole is precast, and a plurality of connecting keys are pre-buried in the first hole and the surrounding area;

[0008] A cast-in-place layer is cast on the bottom plate layer, the cast-in-place layer is provided with a second hole around the first hole, and the second hole and the first hole form a stepped hole;

[0009] The surrounding area of the stepped hole is cleaned, and the corners of the four sides of the stepped surface of the stepped hole are waterproofed;

[0010] Reinforce the multi-layer reinforcing rib mesh on the connecting key;

[0011] Process the hole opening periphery and support the formwork under the hole opening to pour the concrete;

[0012] Maintain the concrete, and remove the formwork after the concrete reaches a certain strength.

[0013] Compared with the prior art, the above technical solutions have the following beneficial effects:

[0014] By reserving the hole opening and embedding the connecting key when prefabricating the bottom plate layer, subsequent construction is facilitated, the connecting key and the multi-layer reinforcing rib mesh fixed thereon are used to replace the previous dowel, damage to the floor caused by drilling is avoided, the cast-in-place layer and the prefabricated bottom plate layer form a stepped hole opening, the water penetration path is prolonged, waterproof treatment is increased, and the leakage situation is reduced.

[0015] Further, the reinforcing the multi-layer reinforcing rib mesh on the connecting key comprises:

[0016] The reinforcing rib is placed at the trough between the two connecting keys, and the reinforcing rib mesh formed by placing the reinforcing rib horizontally and vertically at the trough is fixed to the bottom of the connecting key;

[0017] The reinforcing rib is fixed at the peak of the connecting key, and the reinforcing rib mesh formed by placing the reinforcing rib horizontally and vertically at the peak is fixed to the top of the connecting key.

[0018] Further, the processing the hole opening periphery and supporting the formwork under the hole opening to pour the concrete comprises:

[0019] The hole opening periphery is sufficiently moistened, the formwork is supported under the hole opening, and the hole opening periphery is uniformly smeared with the same cement paste as that of the cast-in-place layer;

[0020] The stepped hole opening is blocked by pouring the micro-expansion fine aggregate concrete with a grade one higher than that of the cast-in-place layer.

[0021] Further, the maintaining the concrete and removing the formwork after the concrete reaches a certain strength comprises:

[0022] The concrete is covered with a film and maintained by watering, and the watering frequency is determined to ensure that the concrete is always in a wet state;

[0023] The formwork is removed when the concrete strength reaches a certain degree of design strength standard value.

[0024] In another aspect, the application discloses a hole blocking structure, which comprises:

[0025] A bottom plate layer, a first hole opening is formed in the bottom plate layer, and a plurality of connecting keys are embedded between the first hole opening and the periphery;

[0026] A cast-in-place layer is poured on the base slab layer to form a composite slab with the precast base slab layer. A second opening is left around the first opening in the cast-in-place layer. The second opening and the first opening form a stepped opening.

[0027] Several reinforcing mesh panels are fixedly connected to the connecting key and fill the first and second openings.

[0028] Furthermore, the connecting key is a strip-shaped connecting key, and the bottom of the connecting key is tied and fixed to the bottom reinforcement bars that are staggered in the bottom plate layer.

[0029] Furthermore, the top of the connecting key is higher than the upper surface of the first opening and lower than the upper surface of the second opening.

[0030] Furthermore, the radial distance between the edges of the first opening and the second opening is not less than one unit of steel reinforcement anchorage length La.

[0031] Furthermore, waterproof components are provided at the corners of the four sides of the stepped surface of the stepped opening.

[0032] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0033] 1. Convenient construction: It utilizes the feature that the prefabricated base slab produced in the factory is not poured at the same time as the cast-in-place layer, and the pre-embedded connection key and the reserved opening on the construction site are convenient.

[0034] 2. Avoid damage to the original structure. During the sealing construction, the traditional rebar installation process is eliminated, avoiding secondary damage caused by drilling holes in the original structural slab, and the forming effect is easy to guarantee.

[0035] 3. Reasonable stress distribution: The precast base slab design takes into account the reinforcement of the lower reinforcement around the opening during production, so there is no problem with the stress distribution of the precast slab bottom. In the upper part, double-layer reinforcement is arranged in the height of the connecting key to ensure the position of the upper reinforcement mesh. In addition, the size of the opening in the cast-in-place layer is 2La larger than the size of the opening in the base slab, which can meet the anchorage length requirements of the reinforcement.

[0036] 4. Good overall integrity: because the connecting keys are set between the new and old concrete, the upper and lower steel meshes can be connected through the connecting keys, so that the new and old concrete form a whole and work together.

[0037] 5. Enhanced waterproofing performance: The stepped holes increase the water penetration path, and waterstops can be installed at the corners to effectively reduce the probability of penetration. In addition, the surface of the precast base plate itself has a roughened treatment, which strengthens the connection between the new and old concrete and also improves the waterproofing effect. Attached Figure Description

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0039] Figure 1 The process flow diagram of the embodiment of the present application.

[0040] Figure 2 The schematic diagram of the connecting key profile structure of the embodiment of the present application.

[0041] Figure 3 The schematic diagram of the top view structure of the embodiment of the present application.

[0042] Figure 4 The schematic diagram of the overall structure of the embodiment of the present application.

[0043] Reference signs:

[0044] 1, bottom plate layer; 2, first hole;

[0045] 3, connecting key;

[0046] 4, cast-in-place layer; 5, second hole;

[0047] 6, reinforcing mesh;

[0048] 7, concrete layer;

[0049] 8, water stop belt;

[0050] 9, bottom bar. EMBODIMENT

[0051] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0052] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by the skilled in the art to which the present application belongs.

[0053] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0055] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] The hole plugging process provided by the embodiment of the present application comprises the following steps:

[0057] S1, a bottom plate layer 1 with a first hole 2 is prefabricated, a plurality of connecting keys 3 are embedded in the first hole 2 and the surrounding area, specifically, when the bottom plate layer 1 is prefabricated in the factory, the bottom plate layer 1 is provided with bottom ribs 9 arranged in a horizontal and vertical staggered manner, and the connecting keys 3 are arranged on the bottom ribs 9 at intervals, the bottom of the connecting key 3 is tied and fixed with the bottom rib 9, and then they are poured together, while the first hole 2 is reserved, and it is ensured that the connecting keys 3 are arranged at the position of the first hole 2, and at least one connecting key 3 penetrates the side wall of the first hole 2.

[0058] S2, pouring a cast-in-place layer 4 on the bottom plate layer 1, reserving a second hole 5 around the first hole 2 of the cast-in-place layer 4, the second hole 5 and the first hole 2 form a stepped hole, specifically, the first hole 2 and the second hole 5 are both square holes, and the diameter of the second hole 5 is greater than that of the first hole 2, and the outline of the first hole 2 is enlarged to form the outline of the second hole 5.

[0059] S3, clean up the surrounding of the stepped hole, waterproof treatment is carried out at the corner of the four sides of the stepped surface of the stepped hole, specifically, the loose concrete around the stepped hole is chiseled off and cleaned with water, then waterproof tape is filled in the corner of the four sides of the stepped surface of the stepped hole, and the waterproof tapes of the four sides are connected end to end to form a waterproof ring.

[0060] S4, reinforcing the multi-layer reinforcing rib mesh 6 on the connecting key 3, specifically including:

[0061] S401, placing the reinforcing rib at the wave trough between the two connecting keys 3, fixing the reinforcing rib mesh 6 formed by the transverse and longitudinal interlaced reinforcing ribs at the bottom of the connecting key 3, fixing the reinforcing rib mesh 6 formed by the transverse and longitudinal interlaced reinforcing ribs by welding or binding, and then fixing it at the wave trough formed by the connecting key 3 by welding or binding, and reinforcing the bottom of the connecting key 3 through the reinforcing rib mesh 6 at this position.

[0062] S402, fixing the reinforcing rib at the wave crest of the connecting key 3, fixing the reinforcing rib mesh 6 formed by the transverse and longitudinal interlaced reinforcing ribs at the top of the connecting key 3, specifically, the surface of the reinforcing rib mesh 6 fixed by binding at the wave crest position of the connecting key 3 is not higher than the surface of the cast-in-place layer 4, the surface of the reinforcing rib mesh 6 is slightly lower than the surface position of the cast-in-place layer 4, and the upper part of the connecting key 3 is reinforced through the reinforcing rib mesh 6 at this position.

[0063] In addition, the reinforcing rib mesh 6 can also be bound on the step surface of the stepped hole, that is, the reinforcing rib mesh 6 is bound and fixed on the connecting key 3 at the upper surface position of the bottom plate layer 1, and the middle part of the connecting key 3 is reinforced through the reinforcing rib mesh 6 at this position.

[0064] S5, processing the hole periphery and supporting the formwork under the hole to pour concrete, specifically including:

[0065] The hole periphery is fully moistened, the hole periphery is evenly coated with the same cement slurry as the cast-in-place layer 4, the formwork is supported under the hole, the formwork under the hole is firmly supported by steel pipes, and the gap between the formwork and the bottom plate layer 1 is tight.

[0066] The stepped hole is blocked by pouring micro-expansion fine aggregate concrete with a higher grade than the cast-in-place layer 4, specifically, to prevent leakage, a layered hole blocking method is adopted to prevent leakage caused by incomplete hole blocking. The specific method is as follows:

[0067] After brushing a layer of cement slurry, the first layer is poured with fine aggregate concrete, the height is 1 / 2 of the hole height, and it is compacted by hand. The second day, the surface layer of concrete is poured, and after the concrete is poured, it should be compacted and smoothed. Layered pouring effectively avoids the through gap caused by concrete shrinkage, and each layer of shrinkage gap is staggered, which plays a role in layer-by-layer defense.

[0068] S6, curing the concrete, and after the concrete reaches a certain strength, the formwork is removed, specifically including:

[0069] After pouring, follow up the maintenance in time, the maintenance time is not less than 7 days, cover the concrete with film and water for maintenance, and the number of watering times should ensure that the concrete is always in a wet state;

[0070] When the concrete strength reaches 75% of the design strength standard value, the bottom form can be removed. The removed formwork and support should be dispersed and cleared in time, and the formwork should be immediately trimmed and cleaned after removal, and then painted with a release agent and classified and neatly stacked for turnover use.

[0071] By reserving the hole and embedding the connecting key 3 when the prefabricated bottom plate layer 1 is prefabricated, the subsequent construction is facilitated, the connecting key 3 and the multi-layer reinforcing mesh 6 fixed thereon are used to replace the previous dowel, the damage to the floor caused by drilling is avoided, and the cast-in-place layer 4 and the prefabricated bottom plate layer 1 form a stepped hole to prolong the water penetration path, and at the same time, the waterproof treatment is increased to reduce the leakage.

[0072] On the other hand, as shown in Figures 2-4 The hole plugging structure disclosed by the embodiment of the present application comprises a bottom plate layer 1, a cast-in-place layer 4, a reinforcing mesh 6 and a concrete layer 7.

[0073] A first hole 2 is formed in the bottom plate layer 1, and a plurality of bottom bars 9 are arranged in the bottom plate layer 1 in a horizontal and vertical staggered manner. A plurality of connecting keys 3 are embedded in the bottom plate layer 1 at intervals around the first hole 2. The first hole 2 is a square hole that penetrates the bottom plate layer 1. Specifically, the connecting key 3 is a strip-shaped connecting key 3, the bottom of the connecting key 3 is tied and fixed with the bottom bars 9 arranged in the bottom plate layer 1 in a staggered manner, the lower part of the connecting key 3 is connected with the bottom bars 9 embedded in the bottom plate layer 1, the lower part of the connecting key 3 is also embedded in the bottom plate layer 1, and the connecting key 3 is arranged at the four peripheral edges of the first hole 2.

[0074] The connecting key 3 is a strip-shaped groove structure made of steel bars according to a certain module, which can be made of HRB400 grade steel bars to adapt to different sizes of holes. Specifically, the cross section of the groove structure can be triangular or rectangular or other various groove structures with the opening downward.

[0075] The cast-in-place layer 4 is poured on the bottom plate layer 1 to form a composite slab with the prefabricated bottom plate layer 1. The cast-in-place layer 4 has a second hole 5 around the first hole 2, and the second hole 5 and the first hole 2 form a stepped hole. The opening of the second hole 5 is larger than that of the first hole 2, and the outline of the first hole 2 is enlarged in proportion to the outline of the second hole 5.

[0076] As shown in Figure 2 The radial distance between the edges of the first hole 2 and the second hole 5 is not less than one unit of the anchoring length La of the steel bar to meet the anchoring length requirement of the steel bar.

[0077] The surface of the bottom plate layer 1 in contact with the pouring layer is roughened to enhance the connection between the new and old concrete and improve the waterproof effect.

[0078] The reinforcing mesh 6 is fixedly connected with the connecting keys 3 and filled in the first hole 2 and the second hole 5, wherein the reinforcing mesh 6 is formed by fixing the reinforcing bars arranged in a crisscross manner.

[0079] The reinforcing mesh 6 is arranged at the peak positions of the three connecting keys 3, i.e. the upper reinforcing mesh is arranged at the peak positions of the connecting keys 3 and connected with the connecting keys 3 by binding, and the reinforcing mesh 6 is arranged at the valley positions of the three connecting keys 3, i.e. the lower reinforcing mesh is arranged on the surface of the prefabricated bottom plate layer 1 at the valley positions of the connecting keys 3.

[0080] The concrete layer 7 is poured in the stepped hole and the upper and lower surfaces of the 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 concrete layer 7 is filled in the whole stepped hole through the connecting keys 3 and the reinforcing mesh 6 embedded in the bottom plate layer 1, and the connecting keys 3 and the reinforcing mesh 6 improve the overall structural strength of the concrete layer 7, the bottom plate layer 1 and the cast-in-place layer 4.

[0081] 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, and the height of the connecting key 3 can ensure the position of the upper reinforcing mesh, the reinforcing bars are arranged in the plate to form multiple layers of reinforcing mesh 6 in the vertical direction of the stepped hole, and the height requirement is to support the position of the upper reinforcing mesh to make the upper reinforcing mesh meet the thickness requirement of the concrete protective layer and improve the structural strength.

[0082] The corners of the four sides of the stepped surface of the stepped hole are provided with waterproof members, which can be waterstop belts 8, and the waterproof members are arranged at the corner positions of the four sides of the stepped surface to form a ring-shaped waterproof structure, further increasing the waterproof effect of the whole plugging structure.

[0083] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hole plugging process, characterized in that, The method comprises the following steps: preparing a bottom layer with a first hole, and embedding a plurality of connecting keys in the first hole and the surrounding area; pouring a cast-in-place layer on the bottom layer, and reserving a second hole around the first hole, so that the second hole and the first hole form a stepped hole, and 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; cleaning the periphery of the stepped hole, and waterproofing the corners of the four edges of the stepped surface of the stepped hole; reinforcing the connecting key with a plurality of layers of reinforcing mesh; processing the periphery of the hole and supporting the formwork under the hole to pour concrete; curing the concrete, and removing the formwork after the concrete reaches a certain strength.

2. The hole plugging process of claim 1, wherein, The reinforcing of the connecting key with a plurality of layers of reinforcing mesh comprises: placing the reinforcing bars in the troughs between the connecting keys, and fixing the reinforcing mesh formed by the horizontal and vertical interlacing of the reinforcing bars at the troughs to the bottom of the connecting key; fixing the reinforcing bars at the peaks of the connecting keys, and fixing the reinforcing mesh formed by the horizontal and vertical interlacing of the reinforcing bars at the peaks to the top of the connecting key.

3. The hole plugging process of claim 1, wherein, The processing of the periphery of the hole and the supporting of the formwork under the hole to pour concrete comprises: sufficiently wetting the periphery of the hole, supporting the formwork under the hole, and uniformly applying a cement paste with the same composition as the cast-in-place layer to the periphery of the hole; pouring micro-expansion fine aggregate concrete with a grade one higher than that of the cast-in-place layer to seal the stepped hole.

4. The hole plugging process of claim 1, wherein, The curing of the concrete and the removal of the formwork after the concrete reaches a certain strength comprises: covering the concrete with a film and watering the concrete, and the watering is performed to ensure that the concrete is always wet; removing the formwork when the strength of the concrete reaches a certain degree of the design strength standard value.

5. A hole plugging structure formed by the hole plugging process of claim 1, wherein, The method comprises: a bottom layer with a first hole, and a plurality of connecting keys embedded in the bottom layer at intervals around the first hole; a cast-in-place layer poured on the bottom layer to form a composite slab with the bottom layer, and a second hole reserved around the first hole in the cast-in-place layer, so that the second hole and the first hole form a stepped hole; a plurality of reinforcing mesh fixedly connected with the connecting keys and filled in the first hole and the second hole.

6. The hole plugging structure of claim 5, wherein, The connecting key is a strip-shaped connecting key, and the bottom of the connecting key is fixedly connected with the bottom bars arranged at intervals in the bottom layer.

7. The hole plugging structure of claim 6, 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.

8. The hole plugging structure of claim 5, wherein, The radial distance between the edges of the first hole and the second hole is not less than one unit of the anchoring length La of the reinforcing bar.

9. The hole plugging structure of claim 5, wherein, The corners of the four edges of the stepped surface of the stepped hole are provided with waterproof members.

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