CN114855872B

CN114855872B - Waterproof paving and concrete formwork pouring system for backfill retaining in limited space

Info

Publication number: CN114855872B
Application number: CN202210313300.XA
Authority: CN
Inventors: 高东源; 温腾飞; 左端午; 白尧尧; 张桂军
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2023-07-18
Anticipated expiration: 2042-03-28
Also published as: CN114855872A

Abstract

The application discloses waterproof paving of backfill fender and concrete formwork pouring system in limit space. According to the system, each layer of backfill in the limited space outside can form a soil pressure layering effect under the mutual cooperation of the supporting wall body and the enlarged head reinforcing steel bar assembly, and the locking and reinforcement are carried out by relying on the layered dead weight of the backfill, so that the construction quality of the backfill is ensured. The setting of template supporting component can support respectively on basement low-span concrete foundation layer and basement high-span concrete foundation layer to in the waterproof layer, fill template supporting component, the clearance between the support wall body, follow-up only need pour basement outer wall concrete placement like this can realize building basement outer wall and basement low-span concrete foundation layer and basement high-span concrete foundation layer link up each other, effectively avoided unable construction backfill in advance and waterproof difficult construction's problem.

Description

Waterproof paving and concrete formwork pouring system for backfill retaining in limited space

Technical Field

The application relates to the technical field of building construction equipment, in particular to a waterproof paving and concrete formwork pouring system for backfill retaining in a limited space.

Background

At present, under the large environment of rapid development of buildings in China, the density of cities is higher and higher, the development requirements of environmental protection and energy conservation are also higher and higher, and for construction, in urban construction, the field sites are limited, the foundation pit sites are limited, and the construction operation surface of basement is often insufficient; for design, the underground space is often designed and utilized to the maximum, and modeling structures such as cross connection of different layers and spans appear, and a method for quick construction and good waterproof effect in a narrow space is needed.

In the related art, in the waterproof construction of the basement outer wall, especially the high-low span connecting part, measures such as adding construction joints are mostly adopted for construction, the setting of the construction joints needs to be added with the setting of water stops, concrete is chiseled out, the construction of the reserved positions of the reinforcing steel bars is inconvenient, the waterproof paving is difficult, the leakage risk is increased, the construction period is increased and other adverse factors are increased.

Disclosure of Invention

In view of this, this application provides the waterproof paving of backfill fender, concrete formwork pouring system in the limited space, can effectively improve the backfill construction, waterproof problem that can not be under construction in advance under the process such as extra additional construction joint, post-cast strip.

The application provides a waterproof paving of backfill fender in limited space, concrete formwork pouring system includes:

backfilling soil bodies, wherein the backfilling soil bodies are provided with a plurality of layers of backfilling soil layers which are sequentially stacked up and down;

the support wall body is used for bearing the outside of the backfilled soil body;

a plurality of enlarged-head rebar assemblies including rebar, enlarged heads threaded to the rebar, and bends disposed at ends of the rebar, each rebar and each enlarged head configured to be partially implanted inside each layer of backfill layer and partially threaded through a support wall until different bends can be hooked to one another to form an anchor for the backfill body on an outer surface of the support wall;

the formwork support assembly is used for supporting the basement low-span concrete foundation layer and the basement high-span concrete foundation layer;

and the waterproof layer is filled in the gap between the template support assembly and the support wall body.

Optionally, the support wall further comprises a square pipe, and the square pipe is arranged between the support wall and the elbow.

Optionally, the waterproof layer comprises a waterproof concrete layer and a waterproof coating layer which are sequentially arranged along the direction away from the supporting wall body.

Optionally, the waterproof layer further comprises a waterproof additional layer arranged in the waterproof concrete layer and the waterproof coating layer.

Optionally, the formwork support assembly comprises a formwork member mounted to the outside of the support wall, a steel tube framework member mounted to the formwork member, and a keel member attached to the end of the formwork.

Optionally, a geotechnical layer is arranged between the backfill soil layers.

The waterproof paving and concrete formwork pouring system for the backfill support in the limited space can lock and reinforce different backfill layers distributed up and down depending on the self weight of the backfill layers under the mutual cooperation of the support wall body and the enlarged head reinforcing steel bar assembly, so that the quality of backfill construction is ensured. The setting of template supporting component can support respectively on basement low-span concrete foundation layer and basement high-span concrete foundation layer to in the waterproof layer, fill template supporting component, the clearance between the support wall body, follow-up only need pour basement outer wall concrete placement like this can realize building basement outer wall and basement low-span concrete foundation layer and basement high-span concrete foundation layer link up each other, effectively avoided unable construction backfill in advance and waterproof difficult construction's problem.

Drawings

Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a waterproof paving and concrete formwork pouring system for backfill retaining in a limited space according to an embodiment of the present application.

Fig. 2 is a partial enlarged view at a in fig. 1.

Fig. 3 is a partial enlarged view at B in fig. 1.

Fig. 4 is a partial enlarged view at C in fig. 1.

Fig. 5 is a schematic structural view of an enlarged-head reinforcement assembly according to an embodiment of the present application in a state of being mounted on a supporting wall.

Fig. 6 is a schematic structural view of an enlarged-head rebar assembly according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a molding member according to an embodiment of the present application.

Fig. 8 is a schematic structural view of a horizontal steel pipe according to an embodiment of the present application.

Fig. 9 is a schematic structural view of a top support according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of an enlarged head according to an embodiment of the present application.

Wherein, the elements in the figure are identified as follows:

20-backfilling soil bodies; 21-backfill layer; 30-expanding head steel bar assembly; 31-enlarging the head; 32-reinforcing steel bars; 33-elbow; 34-square tube; 40-supporting the wall body; 50-a waterproof layer; 51-a waterproof concrete layer; 52-a waterproof coating; 53-an additional layer of waterproofing; 61-a die plate member; 611-side mold; 612-transverse wood ridges; 613-vertical wood ridges; 614-bottom die; 62-steel pipe framework pieces; 621-horizontal steel pipes; 6211-pipe section; 6212-threaded sleeve; 622-vertical steel pipes; 623-diagonal struts; 624-jack support; 6241-screw rod; 6242-rotating fixtures; 6243-bracing; 6243 a-steel nail holes; 63-keel; 631-main joists; 632-secondary keels; 200-basement low-span concrete foundation layer; 300-basement high-span concrete foundation layer; 400-basement exterior wall concrete.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

Before introducing the technical solutions of the present application, it is necessary to set forth the created background of the invention of the present application.

In the related art, in the waterproof construction of the basement outer wall, especially in the high-low span connecting part, measures such as adding construction joints are mostly adopted for construction, the setting of the construction joints is required to be increased, the setting of water stops is required to be increased, concrete is chiseled, the construction of the reserved positions of the reinforcing steel bars 32 is inconvenient, the waterproof paving is difficult, the leakage risk is increased, the construction period is increased and other adverse factors are increased.

Based on the above-described problems unexpectedly found by the inventors, the inventors have proposed a waterproofing system for a high-low span concrete building structure of a basement. The waterproof system of the high-low span concrete building structure of the basement can lock and strengthen different backfill layers 21 which are distributed up and down depending on the self weight of the support wall 40 and the expanded head steel bar assemblies 30 under the mutual cooperation, so that the construction quality of backfill is ensured. The setting of template supporting component can support respectively on basement low span concrete foundation layer 200 and basement high span concrete foundation layer 300 to at waterproof layer 50, fill template supporting component, the clearance between the support wall body 40, follow-up only need pour basement outer wall concrete 400 pour like this can realize building basement outer wall and basement low span concrete foundation layer 200 and basement high span concrete foundation layer 300 link up each other, effectively avoided unable construction backfill in advance and waterproof difficult problem of construction. Thus, the present invention has been created.

Referring to fig. 1, the present application provides a waterproofing system for a basement high-low span concrete building structure, comprising:

backfill soil body 20 with a plurality of layers of backfill soil layers 21 stacked one above the other;

a supporting wall 40 for bearing the outside of the backfill soil 20;

a plurality of enlarged-head rebar assemblies 30 including rebar 32, enlarged heads 31 threaded to the rebar 32, and bends 33 disposed at ends of the rebar 32, each rebar 32 and each enlarged head 31 configured to be partially embedded within each backfill layer 21 and partially threaded through the support wall 40 until the different bends 33 can be hooked to one another to form an anchor for the backfill body 20 to the outer surface of the support wall 40;

a formwork support assembly for supporting on the basement low-span concrete foundation layer 200 and the basement high-span concrete foundation layer 300;

and a waterproof layer 50 filled in the gap between the formwork support assembly and the support wall 40.

With respect to the enlarged head 31, the function is to position the reinforcing bars 32 with respect to the backfill layer 21. Which belongs to a well-known component widely used in the field. Referring to fig. 10, it is generally hat-shaped and has a screw hole formed at a substantially central position for screw-coupling the enlarged head 31 to the outer circumference of the reinforcing bar 32.

In order to further enhance the positioning force of the enlarged head 31 against the backfill, a convex structure, such as a wedge structure or the like, or a stripe or the like, which is easily conceived, may be provided on the surface of the enlarged head 31.

The number of enlarged heads 31 may be plural based on improving the positioning effect of the backfill, as shown in three in fig. 6.

The primary function of the rebars 32 is to provide the primary load bearing capacity to the interior of the backfill layer 21. As one implementation exemplified by fig. 6, rebar 32 may be disposed in a generally horizontal direction, although other implementations with some degree of tilt are permissible.

It is conceivable that in order to achieve the screw-coupling of the reinforcement bar 32 with the enlarged head 31, a reinforcement bar 32 with a threaded section on the outer surface can be used. Specifically, the ordinary reinforcing bars 32 may be subjected to a threading operation.

Referring again to fig. 6, the shape of the elbow 33 described above may be a hook as would be readily appreciated by one skilled in the art, as represented by the "U" shape.

In order to realize the cushioning of the elbow 33 on the outer side of the support wall 40 to prevent the sliding of the elbow 33 thereon due to the non-smoothness of the outer side of the support wall 40, a cushioning member such as a gasket or the like may be used. Referring to fig. 2 and 5, of course, as an exemplary implementation, a square tube 34 is further included, and the square tube 34 is disposed between the support wall 40 and the elbow 33.

Thus, the "square" shape of square tube 34 makes the support of elbow 33 more stable by providing a substantially smooth surface. In addition, square tube 34 itself has some strength and acts as a bearing for the outside of support wall 40.

The support wall 40 has been described above as being capable of bearing external forces to the backfill soil 20. The force bearing is needed on the outer part of the backfill soil body 20, not only is caused by the loose structure of the backfill soil body, but also the enlarged head reinforcing steel bar assembly 30 arranged in the backfill soil body 20 can bear the force on the backfill soil body 20, and simultaneously a pulling force pointing to the outer side surface of the backfill soil body 20 is exerted on the backfill soil body 20, and the outer side surface of the backfill soil body 20 which is not supported by any support is easy to deform under the pulling force, so that the structure of the backfill soil body 20 is unstable. That is, the enlarged head rebar assembly 30 while improving the internal load bearing capacity of the backfill soil body 20, inevitably creates a weakening of the load bearing capacity on the outer side thereof.

The support wall 40 may be constructed using waste bricks or the like.

It is contemplated that the waterproof layer 50 covers the outside surface of the support wall 40 and also covers the top surface of the backfill soil body 20 to provide a more comprehensive waterproof effect.

Referring to fig. 2, in an exemplary embodiment, the waterproof layer 50 includes a waterproof concrete layer 51 and a waterproof coating layer 52 sequentially disposed in a direction away from the support wall 40.

Here, the waterproof concrete layer 51 is a base body poured with concrete, and the waterproof coating layer 52 is a coating construction using a waterproof paint.

Here, the waterproof layer 50 further includes a waterproof additional layer 53 provided in the waterproof concrete layer 51 and the waterproof coating layer 52. The waterproof additional layer 53 may take a form common in the art.

Referring again to fig. 1, as an implementation of a formwork support assembly, the formwork support assembly includes a formwork member 61 installed at an outer side of a support wall 40, a steel pipe framework member 62 installed on the formwork member 61, and a keel member 63 connected to the steel pipe framework member 62.

Here, the form 61 may take the form of a form commonly used in the construction field. Specifically, the formwork 61 includes a side form 611 and a bottom form, wherein the side form 611 is located opposite to the support wall 40 (i.e., in a vertical position), and the bottom form is located in a position supporting the basement high-span concrete foundation 300 (i.e., in a horizontal position).

Referring to fig. 3 and 7, the side mold 611 includes a plurality of templates, a plurality of transverse wood ridges 612 fixedly arranged on the templates, and vertical wood ridges 613 fixedly connected with the transverse wood ridges 612, so that the templates, the transverse wood ridges 612, and the vertical wood ridges 613 are sequentially connected to form a ' Chinese character ' ri '.

The keel 63 may take a form common in the art of architectural decoration. Specifically, referring to FIG. 4, the keel 63 may include a main keel 631 and a cross keel 632. The cross runners 632 are supported on the bottom mold and the main runners 631 are connected to the cross runners 632, which form a runner support system.

The primary function of the steel pipe framework 62 is to support the basement high-span concrete foundation layer 300 via the counter form.

The steel tube framework 62 may take the form of a framework commonly found in the construction arts. Specifically, referring again to fig. 1, the steel pipe framework 62 includes a horizontal steel pipe 621, a vertical steel pipe 622, and a diagonal brace 623 connected, the vertical steel pipe 622 being used to support the basement high-span concrete foundation layer 300 by the bottom mold, the horizontal steel pipe 621 being used to support the side mold 611, the diagonal brace 623 being used to connect the horizontal steel pipe 621, the vertical steel pipe 622.

Referring to fig. 8, the horizontal steel pipes 621 may be spliced with each other by a plurality of sections, so as to be required for different lengths. Specifically, the horizontal steel pipe 621 includes a pipe joint 6211 having external threads and a threaded sleeve 6212 that mates with the pipe joint 6211. Threaded sleeve 6212 has internal threads.

Referring again to fig. 4, the top end of the vertical steel tube 622 may be provided with a jacking 624, the jacking 624 being supported on the main keel 631 as previously described. Referring to fig. 9, the top support 624 includes a screw rod 6241, a rotational fixing member 6242, a support drag 6243, and a steel nail hole 6243a. A steel nail hole 6243a is formed on the stay 6243, and the rotary fixing member 6242 is in threaded engagement with the lead screw.

In order to increase the friction between soil layers to prevent interlayer slip, a geotechnical layer (not shown) is provided between the backfill layers 21. The form of the geotechnical layer can be a common geomembrane, geotechnical cloth, geotechnical net or the like.

The specific operation process of the technical scheme of the application is now described with respect to an application scene with wider application. It should be noted that this common embodiment is not to be taken as an understanding of the basis for the essential characteristics of the technical problem to be solved by the claims of the present application, which are merely exemplary.

Referring to fig. 3, the process of the compaction operation of the subgrade using the auxiliary measuring device of the present application is as follows:

s1, stacking waste bricks with the sizes of 240 multiplied by 115 multiplied by 53mm, reserving the inserted hole sites of the reinforcing steel bars 32, and drilling holes in the reserved hole sites of the supporting wall corresponding to the waste steel pipes with the cross sections of 40 multiplied by 50 mm.

S2, bending and threading the short steel bars 32 according to the backfill soil range to be anchored, processing the short steel bars 32 into the steel bars 32 with threads and the elbows 33, and simultaneously assembling the expansion heads 31 on the steel bars 32.

S3, building the first layer of supporting wall 40; backfilling a small amount of backfill to the reserved hole site of the first layer of supporting wall, penetrating the first layer of short reinforcing steel bars 32 into the hole site of the supporting wall 40, sleeving the expansion heads 31 on the anchoring ends of the reinforcing steel bars 32, horizontally placing the first layer of reinforcing steel bars 32 on the backfill, continuing backfill, and tamping backfill earthwork as required.

And S4, repeating the process for five times according to the S3, and each layer is added, passing the reinforcing steel bars 32 of the later layer through the bends 33 of the reinforcing steel bars 32 of the former layer to form a self-locking combined structure, wherein whether a layer of geotextile is paved at the backfill soil layering position can be considered according to the site situation and soil parameters, so that the friction force between soil layers is increased, and the interlayer slippage is prevented.

S5, erecting a template support frame at a design position, measuring the position of a waterproof concrete pouring side surface, placing the side mold 611 at the position of the waterproof concrete pouring side surface after the multi-layer assembly is completed, and fixing the side mold 611 and a support template at the upper part of a backfill soil body 20 at the edge to form a closed space capable of pouring waterproof concrete.

S6, pouring a waterproof concrete layer 51, and enabling the top of the backfill soil body 20 to be communicated with the waterproof concrete layer 51.

S7, after the waterproof concrete reaches the design strength, smearing a waterproof protective layer; after the waterproof protective layer reaches the design strength, paving the waterproof layer 50 in advance according to the requirement; coating a waterproof protective layer on the outer layer of the waterproof protective layer; after the second waterproof protective layer reaches the design strength, the side forms 611 and the wall hanging forms of the single-side concrete wall are fixed and then the concrete 400 of the basement outer wall is poured, so that the concrete 400 is communicated with the basement low-span concrete foundation layer 200.

The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a waterproof paving of backfill fender and concrete formwork pouring system in limited space which characterized in that includes:

2. The waterproof paving and concrete formwork pouring system for backfill in a confined space of claim 1, further comprising a square tube disposed between the support wall and the elbow.

3. The limited space backfill retaining waterproof paving and concrete formwork pouring system according to claim 1, wherein the waterproof layer comprises a waterproof concrete layer and a waterproof coating layer which are sequentially arranged along the direction away from the supporting wall body.

4. The backfill abutment waterproof paving and concrete formwork pouring system in a confined space of claim 3, wherein said waterproof layer further comprises a waterproof additional layer disposed within said waterproof concrete layer and waterproof coating layer.

5. The waterproof paving and concrete formwork pouring system for backfill retaining in a limited space according to claim 1, wherein the formwork support assembly comprises a formwork member mounted on the outer side of a support wall, a steel pipe framework member mounted on the formwork member, and a keel member connected to the steel pipe framework member.

6. The waterproof paving and concrete formwork pouring system for backfill retaining in a limited space according to claim 1, wherein a geotechnical layer is arranged between the backfill layers.