CN114855872A

CN114855872A - Backfill supporting and retaining waterproof paving and concrete supporting formwork pouring system in limited space

Info

Publication number: CN114855872A
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: 2022-08-05
Anticipated expiration: 2042-03-28
Also published as: CN114855872B

Abstract

The application discloses waterproof shop of back fill fender pastes, concrete formwork pouring system in limit space. The system can enable each layer of backfill soil in the limited space at the outer side to form a soil pressure layering effect and lock and reinforce by means of the self weight of the layering of the backfill soil under the mutual matching of the supporting wall and the expanded head steel bar assemblies, and therefore the quality of backfill soil construction is guaranteed. The setting of template supporting component can be supported respectively on the concrete foundation layer is striden to basement low and the concrete foundation layer is striden to basement high to at the waterproof layer, fill in the clearance between template supporting component, the support wall body, follow-up need only pour basement outer wall concrete placement can realize pouring the basement outer wall and link up each other with the concrete foundation layer is striden to basement low with basement and the concrete foundation layer is striden to basement high like this, effectively avoided unable problem that the back filling of being under construction in advance and waterproof is difficult to the construction.

Description

Backfill supporting and retaining waterproof paving and concrete supporting formwork pouring system in limited space

Technical Field

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

Background

At present, under the large environment of rapid development of buildings in China, the urban density is higher and higher, the development requirements of environmental protection and energy conservation are higher and higher, and for construction, in urban construction, the site is limited, the foundation pit site is limited, and the basement construction working surface is not enough; for design, currently, underground space is often designed and utilized to the maximum, and modeling structures such as cross-connection of different layers appear, and a method for constructing in a narrow space quickly and with a good waterproof effect needs to be provided.

In the related technology, in the waterproof construction of basement exterior walls, especially for high-low span joint parts, measures such as increasing construction joints are mostly adopted for construction, the arrangement of the construction joints needs to increase the arrangement of water stops, concrete is removed and chiseled, the construction of reserved positions of reinforcing steel bars is inconvenient, waterproof paving and pasting are difficult, leakage risks are increased, and adverse factors such as construction period are increased.

Disclosure of Invention

In view of this, the application provides a backfill retaining waterproof paving and concrete formwork pouring system in a limited space, and can effectively improve the problems of backfill construction and water prevention that cannot be constructed in advance without additionally increasing working procedures such as construction joints and post-cast strips.

The application provides a backfill props up waterproof shop of fender and pastes, concrete formwork casting system in finite space, includes:

the backfill soil body is provided with a plurality of backfill soil layers which are sequentially overlapped from top to bottom;

the supporting wall is used for bearing the force of the outside of the backfill soil body;

a plurality of enlarged head reinforcing steel bar assemblies, each enlarged head reinforcing steel bar assembly comprises a reinforcing steel bar, an enlarged head screwed with the reinforcing steel bar and an elbow arranged at the end of the reinforcing steel bar, each reinforcing steel bar and each enlarged head are configured to be partially implanted into each backfill layer and partially penetrate through a support wall body until different elbows can be mutually hooked to anchor the backfill body on the outer surface of the support wall body;

the template supporting component 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 a gap between the template supporting component and the supporting 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 includes a waterproof concrete layer and a waterproof coating layer sequentially arranged in a direction away from the support wall.

Optionally, the waterproof layer further comprises a waterproof additional layer disposed within the waterproof concrete layer and the waterproof coating layer.

Optionally, the formwork support assembly includes a formwork member installed outside the support wall, a steel pipe frame member installed on the formwork member, and a keel member connected to an end of the formwork.

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

Above provide waterproof shop of backfill fender in the finite space and paste, concrete formwork concreting system, support wall, enlarged footing reinforcing bar subassembly mutually support can make the different backfill body that present upper and lower distribution rely on its dead weight to lock the reinforcement, guaranteed the quality of backfill construction. The setting of template supporting component can be supported respectively on the concrete foundation layer is striden to basement low and the concrete foundation layer is striden to basement high to at the waterproof layer, fill in the clearance between template supporting component, the support wall body, follow-up need only pour basement outer wall concrete placement can realize pouring the basement outer wall and link up each other with the concrete foundation layer is striden to basement low with basement and the concrete foundation layer is striden to basement high like this, effectively avoided unable problem that the back filling of being under construction in advance and waterproof is difficult to the construction.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

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

Fig. 2 is a partially enlarged view of a point a in fig. 1.

Fig. 3 is a partially enlarged view of fig. 1 at B.

Fig. 4 is a partially enlarged view of C in fig. 1.

Fig. 5 is a schematic structural view illustrating an enlarged footing reinforcing bar assembly installed on a supporting wall according to an embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of an enlarged footing reinforcing bar assembly according to an embodiment of the present application.

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

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

Fig. 9 is a schematic structural view of a top stay provided in the 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 figures are identified as follows:

20-backfilling soil; 21-backfill soil layer; 30-an enlarged head rebar assembly; 31-an enlarged head; 32-steel bars; 33-bend; 34-a square tube; 40-supporting the wall; 50-a waterproof layer; 51-waterproof concrete layer; 52-waterproof coating; 53-additional waterproof layer; 60-a formwork support assembly; 61-a template member; 611-side die; 612-transverse wood edges; 613-vertical wood ridges; 614-bottom die; 62-steel tube skeleton piece; 621-horizontal steel pipe; 6211-pipe section; 6212-a threaded sleeve; 622-vertical steel tube; 623-inclined strut; 624-top bracing; 6241-lead screw; 6242-rotating fixture; 6243-prop and drag; 6243 a-Steel nail holes; 63-keel member; 631-main keel; 632-minor keel; 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 should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Before the technical solutions of the present application are introduced, it is necessary to explain the background of the invention of the present application.

It is common that, in the related art, in the waterproof construction of basement exterior wall, especially the handing-over part is striden to height, mostly adopt measures such as increase construction joint to carry out the construction, the setting of construction joint needs to increase the setting of waterstop, picks and cuts a hole the concrete, the construction of reinforcing bar 32 reservation position is inconvenient, waterproof shop pastes the difficulty, increases the seepage risk, increases unfavorable factors such as time limit for a project.

Based on the above-mentioned problems unexpectedly found by the inventors, the inventors propose a waterproofing system for a high-low span concrete building structure of a basement. The waterproof system of the basement high-low span concrete building structure can ensure that different backfill soil layers 21 which are distributed up and down can be locked and reinforced by the self weight of the backfill soil layers under the mutual matching of the supporting wall 40 and the enlarged footing reinforcing steel bar component 30, so that the quality of backfill soil construction is ensured. The template supporting component 60 can support the basement low-span concrete foundation layer 200 and the basement high-span concrete foundation layer 300 respectively, and fills the gap between the template supporting component 60 and the supporting wall body 40 in the waterproof layer 50, so that the basement outer wall can be built by subsequently pouring the basement outer wall concrete 400, the mutual communication between the basement outer wall and the basement low-span concrete foundation layer 200 and the basement high-span concrete foundation layer 300 can be realized, and the problems that the backfill concrete cannot be constructed in advance and the waterproof construction is not easy are effectively avoided. Therefore, the invention is created.

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

a backfill soil body 20 having a plurality of backfill soil layers 21 stacked in an up-down order;

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

a plurality of enlarged head rebar assemblies 30 comprising rebar 32, enlarged heads 31 screwed to the rebar 32 and elbows 33 provided at ends of the rebar 32, each of the rebar 32 and each of the enlarged heads 31 being configured to be partially embedded inside each of the backfill layers 21 and partially penetrate the support wall 40 until different elbows 33 can be hooked to each other to form an anchor for the backfill body 20 on an outer surface of the support wall 40;

a formwork support assembly 60 for supporting 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 60 and the support wall 40.

The enlarged head 31 is used to position the backfill layer 21 by the reinforcing bars 32. Belonging to the well-known components widely used in the field. Referring to fig. 10, it is generally in the shape of a cap and has a screw hole formed at a substantially central position thereof for screwing the enlarged head 31 to the outer periphery of the reinforcing bar 32.

In order to further improve the positioning force of the enlarged head 31 on the backfill soil, a conceivable convex structure, such as a wedge structure or the like, or stripes or the like, may be provided on the surface of the enlarged head 31.

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

The main function of the steel bars 32 is to provide a main bearing force for the inside of the backfill soil layer 21. As one implementation exemplified by fig. 6, the rebar 32 may be disposed in a generally horizontal direction, although other implementations with some degree of tilt are permitted.

It is contemplated that a rebar 32 with a threaded section on the outer surface may be used in order to effect the threading of the rebar 32 into the enlarged head 31. Specifically, the threading operation may be performed on the ordinary rebar 32.

Referring again to fig. 6, the shape of the bend 33 may be a hook shape as would be readily understood by one skilled in the art, such as the "U" shape presented in the figures.

In order to achieve a lining of the bend 33 on the outer side of the support wall 40 to prevent the bend 33 from sliding on it due to the lack of smoothness of the outer side of the support wall 40, a lining member, such as a washer or the like, may be used. Referring to fig. 2 and 5, it is a matter of course that a square pipe 34 is included as an exemplary implementation, and the square pipe 34 is disposed between the support wall 40 and the elbow 33.

Thus, the "squareness" of the square tube 34 makes the support of the bend 33 more stable by providing a substantially smooth surface. In addition, the square pipe 34 has a certain strength, and plays a certain bearing role on the outer side surface of the support wall 40.

The support wall 40 can bear the force on the outside of the backfill body 20. The external part of the backfill soil body 20 needs to bear force, not only due to the loose structure of the backfill soil itself, but also more importantly, the enlarged head reinforcing steel bar assembly 30 arranged inside the backfill soil body 20 can exert a pulling force directed to the external side surface of the backfill soil body 20 while bearing force on the backfill soil body 20, and the external 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 not firm. That is, the enlarged head reinforcing bar assembly 30 inevitably causes weakening of the bearing capacity at the outer side surface thereof while improving the internal bearing capacity of the backfill body 20.

The supporting wall 40 may be built by using waste bricks.

It is conceivable that the waterproof layer 50 is coated on the outer side surface of the supporting wall 40 and also on the top surface of the backfill soil 20 to achieve 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 concrete-cast base, and the waterproof coating layer 52 is obtained by applying a waterproof coating material.

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. Additional layers 53 of water resistance may take a form common in the art.

Referring again to fig. 1, as an implementation of the formwork support assembly 60, the formwork support assembly 60 includes a formwork member 61 installed outside the support wall 40, a steel pipe frame member 62 installed on the formwork member 61, and a keel member 63 connected to the steel pipe frame member 62.

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

Referring to fig. 3 and 7, the side mold 611 includes a plurality of mold plates, a plurality of transverse wood ridges 612 fixed on the mold plates, and vertical wood ridges 613 fixedly connected to the transverse wood ridges 612, so that the mold plates, the transverse wood ridges 612, and the vertical wood ridges 613 are connected in sequence to form a "zigzag" shape.

The keel member 63 may take a form common in the architectural decoration art. Specifically, referring to fig. 4, keel member 63 may include a main keel 631 and a cross keel 632. The secondary keel 632 is supported on the bottom mold, and the primary keel 631 is connected to the secondary keel 632, which form a keel support system.

The main function of the steel pipe frame 62 is to support the high-span concrete foundation layer 300 of the basement through the bottom mold.

The steel tube frame members 62 may take the form of the usual support frames used in the construction field. Specifically, referring to fig. 1 again, the steel pipe frame 62 includes a horizontal steel pipe 621, a vertical steel pipe 622, and an inclined strut 623 connected to each other, where the vertical steel pipe 622 is used to support the basement high-span concrete foundation layer 300 through the bottom mold, the horizontal steel pipe 621 is used to support the side mold 611, and the inclined strut 623 is used to connect the horizontal steel pipe 621 and the vertical steel pipe 622.

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

Referring again to fig. 4, the top end of the vertical steel pipe 622 may be provided with a top brace 624, and the top brace 624 is supported on the main keel 631. Referring to fig. 10, the top brace 624 includes a lead screw 6241, a rotational fastener 6242, a brace stay 6243, and a steel nail hole 6243 a. The steel nail hole 6243a is opened on the support bracket 6243, and the rotary fixing member 6242 is in threaded fit with the screw rod.

In order to increase the friction between soil layers and prevent slippage between the layers, a soil layer (not shown) is provided between the backfill soil layers 21. The geotechnical layer can be in the form of common geomembrane or geotextile or geonet and the like.

The specific operation process of the technical scheme of the application is described for an application scenario with wider application. It should be noted that this general embodiment is not to be taken as an identification basis for understanding the essential features of the technical problem to be solved by the present application, but is merely exemplary.

Referring to fig. 3, the procedure for the roadbed compacting operation using the auxiliary measuring device of the present application is as follows:

s1, piling the waste bricks with the size of 240 mm multiplied by 115 mm multiplied by 53mm, reserving reinforcing steel bars 32 to penetrate through the hole sites, and drilling the waste steel pipes with the cross section size of 40mm multiplied by 50mm corresponding to the reserved hole sites of the support wall.

S2, the short steel bar 32 is bent and threaded according to the backfill soil range to be anchored, the steel bar 32 with the thread and the elbow 33 is processed, and the expansion head 31 is assembled on the steel bar 32.

S3, finishing building the first layer of supporting wall 40; backfilling a small amount of backfill soil to the reserved hole position of the first layer of the support wall, penetrating the first layer of short steel bars 32 into the hole position of the support wall 40, sleeving the anchor ends of the steel bars 32 with the expansion heads 31, horizontally placing the first layer of steel bars 32 on the backfill soil, continuously backfilling the soil, and tamping the backfill soil according to requirements.

And S4, repeating the method of S3 for five times, adding one layer each time, enabling the steel bars 32 of the next layer to penetrate through the elbows 33 of the steel bars 32 of the previous layer to form a self-locking combined structure, considering whether a layer of geotextile is paved at the backfill layering position according to the field condition and the soil body parameters, increasing the friction force between the soil body layers and preventing the interlayer slippage.

S5, erecting the formwork support frame at the designed position, measuring the position of the pouring side face of the waterproof concrete, after the side forms 611 are assembled in multiple layers, placing the side forms at the position of the pouring side face of the waterproof concrete, and fixing the side forms with the support formwork at the upper part of the backfill soil body 20 at the edge to form a closed space for pouring the waterproof concrete.

And S6, pouring the waterproof concrete layer 51, and communicating the top of the backfill body 20 with the waterproof concrete layer 51.

S7, after the waterproof concrete reaches the designed strength, smearing a waterproof protective layer; after the waterproof protective layer reaches the designed 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 basement outer wall concrete 400 is poured after the side mold 611 and the wall hanging mold of the shaped single-side concrete wall are fixed, and the basement outer wall concrete 400 is communicated with the basement low-span concrete foundation layer 200.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. The utility model provides a backfill props up waterproof shop of fender and pastes, concrete formwork pouring system in finite space which characterized in that includes:

2. The waterproofing system according to claim 1 further comprising a square tube disposed between the support wall and the elbow.

3. The waterproofing system according to claim 1, wherein the waterproofing layer comprises a waterproof concrete layer and a waterproof coating layer which are sequentially arranged in a direction away from the supporting wall.

4. The waterproofing system according to claim 3 wherein the waterproofing layer further comprises an additional layer of waterproofing disposed within the waterproofing concrete layer and waterproofing coating.

5. The waterproofing system according to claim 1 wherein the formwork support assembly comprises a formwork member installed outside the support wall, a steel pipe skeleton member installed on the formwork member, and a keel member connected to the steel pipe skeleton member.

6. The waterproofing system according to claim 1 wherein a geotextile is disposed between said backfill layers.