Foundation pit slope dewatering soil nailing wall structure

Abstract

The utility model discloses a foundation pit slope dewatering soil nailing wall structure, belongs to the technical field of soil nailing wall structures, and solves the problems that in the prior art, due to the fact that a reinforcing mesh and a slope are poor in fitting degree, falling rocks roll to impact the reinforcing mesh, the reinforcing mesh is possibly damaged, stress of all areas is possibly uneven, and the service life of the reinforcing mesh is prolonged. And even the stability of the soil nailing wall is influenced. The device comprises a reinforcing mesh hung on the foundation pit side slope, an anchor rod driven into the foundation pit side slope, a sprayed concrete layer and a fixing structure for fixing the reinforcing mesh on the foundation pit side slope in an attached mode, and the fixing structure comprises a fixing plate and a plurality of conical nails arranged on the fixing plate. The device is used for supporting the slope of the foundation pit and draining water to the dewatering well.

Description

TECHNICAL FIELD

[0001] The utility model relates to a foundation pit slope dewatering soil nailing wall structure for supporting the foundation pit slope and draining water to the dewatering well. BACKGROUND

[0002] The soil nailing wall is an in-situ soil body reinforcing technology, which reinforces the foundation pit slope through soil nails made of steel bars, lays a steel bar mesh on the slope surface, and then sprays a layer of concrete surface layer, thereby combining the slope reinforcement type supporting construction method with the earthwork slope.

[0003] The construction process of the foundation pit slope dewatering soil nailing wall structure is as follows: preparing the construction site, including cleaning the site and setting up temporary facilities and equipment required for construction; excavating the foundation pit according to the design requirements, usually using the method of layered excavation to reduce the disturbance to the soil body. At the same time of excavation or after the completion of excavation, the slope is trimmed to achieve the slope required by the design, and preliminary concrete spraying is performed to protect the slope surface. According to the design drawings, the positioning and hole forming of the soil nails are performed. This step is usually completed using special equipment such as a drill. The soil nails are made of steel bars or steel cables and may have an anchoring segment. After the soil nails are installed in place, grouting is performed to enhance the adhesion between the soil nails and the soil body. The steel bar mesh and the reinforcing rib are installed on the slope surface to enhance the tensile and shear resistance of the entire structure. After the installation of the steel bar mesh and the reinforcing rib is completed, the second concrete spraying is performed to form the surface layer of the soil nailing wall. After the completion of construction, the soil nailing wall is regularly maintained and monitored to ensure its stability and safety, and finally the dewatering well, water pump and the like are set in the foundation pit to realize the drainage of rainwater and the like.

[0004] However, the prior art has the following technical problems:

[0005] The steel bar mesh has poor adhesion with the slope, which may damage the steel bar mesh and cause uneven bearing force in each region, and even affect the stability of the soil nailing wall. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a foundation pit slope dewatering soil nailing wall structure to solve the problem of poor adhesion of the steel bar mesh with the slope in the prior art, which may damage the steel bar mesh, cause uneven bearing force in each region, and even affect the stability of the soil nailing wall.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0008] The utility model provides a kind of foundation pit slope dewatering soil nail wall structure, including hanging in steel mesh on foundation pit slope, anchor rod into foundation pit slope and the concrete layer of injection, including the fixed structure of steel mesh adhesion and fixation on foundation pit slope, fixed structure includes fixed plate, multiple tapering nails are set on fixed plate.

[0009] Further, the tapering nail is provided with a barb.

[0010] Further, it further includes reinforcing structure for reinforcing the fixed structure;

[0011] The reinforcing structure includes multiple rows of horizontal reinforcing rods and multiple rows of vertical reinforcing rods connected with the multiple rows of horizontal reinforcing rods, the horizontal reinforcing rod or / and the vertical reinforcing rod is provided with a fixing hole, and a fixed rod is tapered into the foundation pit slope in cooperation with the fixing hole.

[0012] Further, the bottom of the horizontal reinforcing rod or the vertical reinforcing rod is provided with multiple T-shaped grooves with one side opening, and a T-shaped piece in cooperation with the T-shaped groove and in contact or adjacent to the fixed plate.

[0013] Further, the opening of the T-shaped groove is arranged on the upper side of the horizontal reinforcing rod;

[0014] The opening of the T-shaped groove is arranged on the left side or the right side of the vertical reinforcing rod.

[0015] Further, the T-shaped piece includes a horizontal plate and a vertical plate connected with the horizontal plate, the horizontal plate includes a bottom plate connected with the vertical plate, an elastic reset structure arranged on the bottom plate and a top plate arranged on the elastic reset structure.

[0016] Further, the steel mesh includes a steel mesh A adhering to the foundation pit slope below the reinforcing structure, and a steel mesh B arranged above the reinforcing structure and in the concrete layer.

[0017] Further, the horizontal reinforcing rod or / and the vertical reinforcing rod is provided with a hanging rod for hanging the steel mesh B.

[0018] Further, the elastic reset structure is a reset spring or an elastic sheet.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] Firstly, after the steel mesh is hung on the foundation pit slope, the fixed plate and the multiple tapering nails in the fixed structure are used to fix and adhere to the non-adhering position, so that the steel mesh and the foundation pit slope can be closely adhered to each other, the overall stability of the structure is improved, the tapering nails can effectively fix the steel mesh, reduce the displacement and vibration of the steel mesh during construction and operation, the rolling impact of falling rocks on the steel mesh can be avoided, the possibility of damage to the steel mesh is reduced, and the bearing force of each region is uniform.

[0021] Second, the utility model discloses the barb is set on the tapering nail, can increase the friction of tapering nail and soil body, make it more firmly fixed in the soil body, thereby enhance the connecting strength between the reinforcing mesh and the foundation pit slope, can also effectively avoid the tapering nail and fall off in the use process because of external force (such as vibration, impact etc.

[0022] Third, the reinforcing structure in the utility model is pressed to the fixed structure by the multiple rows of horizontal reinforcing rods and vertical reinforcing rods, which can effectively improve the stability and anti-deformation ability of the whole soil-nailing wall structure, that is, can effectively disperse and bear the pressure from the soil body.

[0023] Fourth, the utility model discloses the multiple one-side opening T-shaped grooves are set at the bottom of the horizontal reinforcing rod or vertical reinforcing rod, and the corresponding T-shaped pieces can be set in the T-shaped groove, which can select the T-shaped pieces of different lengths to abut or approach the corresponding fixed structure according to different recess depths, so as to effectively avoid the problem that the fixed structure falls off and impacts the reinforcing structure.

[0024] Fifth, the utility model limits the opening setting position of the T-shaped groove, which is convenient for installation and effectively avoids the T-shaped piece from falling off.

[0025] Sixth, the T-shaped piece in the utility model comprises a horizontal plate and a vertical plate, which can provide more stable support and connection through cooperation with the T-shaped groove, and the fixed structure is not easy to fall off, wherein the horizontal plate comprises a bottom plate, an elastic reset structure and a top plate, which can not only compress the horizontal plate to make the horizontal plate easy to install into the T-shaped groove and cooperate with the corresponding fixed plate, but also reset the horizontal plate through the elastic reset structure to firmly fix the horizontal plate in the T-shaped groove and cooperate with the fixed plate to form a buffering effect when under stress, which helps to absorb and disperse external load and reduce the impact on the structure.

[0026] Seventh, the reinforcing mesh in the utility model comprises a reinforcing mesh A and a reinforcing mesh B to form a double-layer reinforcing mesh structure and is set at a limited position, which significantly enhances the stability of the structure and improves the resistance to soil pressure and water pressure.

[0027] Eighth, the hanging rod makes the installation of the reinforcing mesh B more convenient and fast, which reduces the complexity and labor intensity in construction. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, and for the ordinary skilled person in the art, other related drawings can also be obtained according to these drawings without the creative labor.

[0029] Figure 1The utility model discloses a fixed structure and reinforcing structure cooperate with the structure schematic diagram of reinforcing mesh in the utility model.

[0030] Figure 2 The structure schematic diagram of fixed structure in the utility model;

[0031] Figure 3 The structure schematic diagram of T-shaped piece in the utility model;

[0032] Figure 4 The structure schematic diagram of reinforcing structure in the utility model;

[0033] In the drawing: 1-reinforcing mesh, 2-fixed structure, 3-fixed plate, 4-tapered nail, 5-barb, 6-reinforcing structure, 7-cross reinforcing rod, 8-vertical reinforcing rod, 9-fixing hole, 10-fixing rod, 11-T-shaped groove, 12-T-shaped piece, 13-cross plate, 14-vertical plate, 15-bottom plate, 16-elastic reset structure, 17-top plate, 18-reinforcing mesh A, 19-reinforcing mesh B, 20-hanging rod. DETAILED DESCRIPTION

[0034] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0035] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0036] In the description of the utility model, it is necessary to explain that if the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship when the utility model product is usually placed, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, structure and operation, therefore, it cannot be understood as the limitation of the utility model.

[0037] In addition, if the terms "first", "second", "third" and the like appear, they are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0038] In addition, if the terms "horizontal", "vertical", "overhanging" and the like appear, it does not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. As "horizontal" only means that its direction is more horizontal relative to "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0039] In the description of the utility model, it is also necessary to explain that, unless there is a clear provision and limitation, if the terms "set", "install", "connect", "connect" and the like appear, it should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0040] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0041] Embodiment 1

[0042] In order to solve the problem that the steel mesh and the slope in the prior art are poor in adhesion, causing the rolling impact of falling stones on the steel mesh, which not only may damage the steel mesh, but also may cause uneven force bearing in each region, and even affect the stability of the soil-nailing wall. As shown in Figures 1-4 A foundation pit slope dewatering soil-nailing wall structure is provided, which comprises a steel mesh 1 hung on the foundation pit slope, an anchor rod punched into the foundation pit slope, and a sprayed concrete layer, comprising a fixing structure 2 for adhesion and fixation of the steel mesh 1 on the foundation pit slope, the fixing structure 2 comprising a fixing plate 3 and a plurality of tapering nails 4 arranged on the fixing plate 3.

[0043] In practice, after the foundation pit slope is treated, the steel mesh 1 is first hung thereon, then the tapering nails 4 in the fixing structure 2 are tapered into the foundation pit slope, and a certain position of the steel mesh 1 is pressed on the slope through the fixing plate 3, then the anchor rod is punched into the foundation pit slope, the grout is injected into the slope through the anchor rod, and the concrete layer is injected into the foundation pit slope, so as to support the slope, and the subsequent dewatering well arranged in the foundation pit can be drained through the concrete layer, and the water collected in the dewatering well can be discharged through the water pump. In this embodiment, after the steel mesh is hung on the foundation pit slope, the fixing plate and the plurality of tapering nails in the fixing structure are used to fix and adhere the non-adhesion position, so that the steel mesh and the foundation pit slope can be closely adhered, thereby improving the overall stability of the structure. The tapering nails can effectively fix the steel mesh, reduce the displacement and vibration of the steel mesh during construction and operation, avoid the rolling impact of falling stones on the steel mesh, reduce the possibility of damage to the steel mesh, and make the force bearing in each region uniform.

[0044] Embodiment 2

[0045] On the basis of embodiment 1, the tapering nail 4 is provided with barbs 5. The barbs provided on the tapering nail can increase the friction between the tapering nail and the soil body, so that the tapering nail is more firmly fixed in the soil body, thereby enhancing the connection strength between the reinforcement mesh and the foundation pit slope, and effectively avoiding the tapering nail from falling off due to external force (such as vibration, impact, etc.) during use.

[0046] Embodiment 3

[0047] On the basis of embodiment 2, the reinforcing structure 6 for reinforcing the fixed structure 2 is further included; the reinforcing structure 6 includes multiple rows of horizontal reinforcing rods 7 and multiple rows of vertical reinforcing rods 8 connected with the multiple rows of horizontal reinforcing rods 7, the horizontal reinforcing rod 7 or / and the vertical reinforcing rod 8 is provided with a fixing hole 9, the position is set according to the cooperation between the reinforcing structure 6 and the reinforcement mesh to avoid the situation that the fixing rod cannot be installed, and a fixing rod 10 for tapering into the foundation pit slope is matched with the fixing hole 9, the fixing rod can be a rod body as shown, or an anchor rod. The reinforcing structure in this embodiment can effectively improve the stability and anti-deformation ability of the whole soil-nailing wall structure by pressing the fixed structure through multiple rows of horizontal reinforcing rods and vertical reinforcing rods, that is, effectively dispersing and bearing the pressure from the soil body. Figure 1

[0048] Embodiment 4

[0049] On the basis of embodiment 3, the bottom of the horizontal reinforcing rod 7 or the vertical reinforcing rod 8 is provided with multiple T-shaped grooves 11 with one side opening, and a T-shaped piece 12 matched with the T-shaped groove 11 and in contact with or adjacent to the fixed plate 3. By setting multiple T-shaped grooves with one side opening at the bottom of the horizontal reinforcing rod or the vertical reinforcing rod, and setting corresponding T-shaped pieces in the T-shaped grooves, different lengths of T-shaped pieces can be selected to abut or be adjacent to the corresponding fixed structure according to different recess depths, so as to effectively avoid the problem that the fixed structure falls off and impacts the reinforcing structure. Of course, in the implementation, other ways can also be used for reinforcement and fixation, such as setting screw holes on the horizontal reinforcing rod 7 or the vertical reinforcing rod 8, setting bolts in the screw holes, and matching different lengths of bolts with different recess depths to press the corresponding fixed plate through the bolts.

[0050] Embodiment 5

[0051] On the basis of embodiment 4, the opening of the T-shaped groove 11 is arranged on the upper side of the horizontal reinforcing rod 7; the opening of the T-shaped groove 11 is arranged on the left side or the right side of the vertical reinforcing rod 8. The opening of the T-shaped groove is arranged to facilitate installation and effectively avoid the T-shaped piece from falling off.

[0052] Embodiment 6

[0053] ​On the basis of embodiment 5, the T-shaped piece 12 comprises a horizontal plate 13 and a vertical plate 14 connected with the horizontal plate 13, the horizontal plate 13 comprises a bottom plate 15 connected with the vertical plate 14, an elastic reset structure 16 arranged on the bottom plate 15 and a top plate 17 arranged on the elastic reset structure 16, the elastic reset structure 16 is a reset spring or an elastic sheet. In practice, by pressing the horizontal plate, the horizontal plate is thinned, the T-shaped piece 12 is bent and shortened as a whole, it can be easily put into the T-shaped groove, and excessive friction with the fixed plate is avoided, when the pressure is released, the horizontal plate is reset, the T-shaped piece 12 can be firmly fixed in the T-shaped groove 11 and cooperates with the fixed structure. Therefore, the T-shaped piece in the embodiment comprises a horizontal plate and a vertical plate, which can provide more stable support and connection by cooperating with the T-shaped groove, the fixed structure is not easy to fall off, and the horizontal plate comprises a bottom plate, an elastic reset structure and a top plate, which can not only compress the horizontal plate to make the horizontal plate easy to be installed into the T-shaped groove and cooperate with the corresponding fixed plate, but also reset the horizontal plate to be firmly fixed in the T-shaped groove and cooperate with the fixed plate, and after the cooperation, the horizontal plate forms a buffering effect when being stressed, which is helpful to absorb and disperse external load and reduce the impact on the structure.

[0054] Embodiment 7

[0055] On the basis of embodiment 6, the reinforcing mesh 1 comprises a reinforcing mesh A 18 arranged below the reinforcing structure 6 and matched with the foundation pit slope, and a reinforcing mesh B 19 arranged above the reinforcing structure 6 and located in the concrete layer. The reinforcing mesh comprises the reinforcing mesh A and the reinforcing mesh B to form a double-layer reinforcing mesh structure, which is arranged at a limited position, significantly enhances the stability of the structure and improves the resistance to soil pressure and water pressure.

[0056] Embodiment 8

[0057] On the basis of embodiment 7, the horizontal reinforcing rod 7 or / and the vertical reinforcing rod 8 is provided with a hanging rod 20 for hanging the reinforcing mesh B 19. The hanging rod makes the installation of the reinforcing mesh B more convenient and fast, and reduces the complexity and labor intensity in construction. The structure of the hanging rod can be set according to actual needs.

Claims

1. A dewatering soil-nailing wall structure of a foundation pit slope, comprising a steel mesh (1) hung on the foundation pit slope, an anchor rod driven into the foundation pit slope, and a sprayed concrete layer, characterized in that: The utility model relates to a kind of reinforcing structure of foundation pit slope, including the fixing structure (2) of adhering and fixing steel bar net (1) on foundation pit slope, fixing structure (2) includes fixed plate (3), multiple tapering nails (4) are arranged on fixed plate (3).

2. The foundation pit slope dewatering soil-nailing wall structure according to claim 1, characterized in that, The tapering nail (4) is provided with barbs (5).

3. The foundation pit slope dewatering soil-nailing wall structure according to claim 2, characterized in that, It also includes reinforcing structure (6) for reinforcing the fixing structure (2); Reinforcing structure (6) includes multiple rows of horizontal reinforcing rods (7) and multiple rows of vertical reinforcing rods (8) connected with multiple rows of horizontal reinforcing rods (7), horizontal reinforcing rod (7) or / and vertical reinforcing rod (8) is provided with fixed hole (9), and fixed rod (10) is tapered into foundation pit slope in cooperation with fixed hole (9).

4. The foundation pit slope dewatering soil-nailing wall structure according to claim 3, characterized in that, The bottom of the horizontal reinforcing rod (7) or the vertical reinforcing rod (8) is provided with multiple one-side opening T-shaped grooves (11), and a T-shaped piece (12) is matched with the T-shaped groove (11) and in contact or adjacent with the fixed plate (3).

5. The foundation pit slope dewatering soil-nailing wall structure according to claim 4, characterized in that, The opening of the T-shaped groove (11) is arranged on the upper side of the horizontal reinforcing rod (7); The opening of the T-shaped groove (11) is arranged on the left side or the right side of the vertical reinforcing rod (8).

6. The foundation pit slope dewatering soil-nailing wall structure according to claim 4, characterized in that, The T-shaped piece (12) includes a horizontal plate (13) and a vertical plate (14) connected with the horizontal plate (13), the horizontal plate (13) includes a bottom plate (15) connected with the vertical plate (14), an elastic reset structure (16) arranged on the bottom plate (15) and a top plate (17) arranged on the elastic reset structure (16).

7. The foundation pit slope dewatering soil-nailing wall structure according to any one of claims 1-6, characterized in that, The steel bar net (1) includes steel bar net A (18) adhered to foundation pit slope below reinforcing structure (6), steel bar net B (19) arranged above reinforcing structure (6) and in concrete layer.

8. The foundation pit slope dewatering soil-nailing wall structure according to claim 6, characterized in that, The horizontal reinforcing rod (7) or / and vertical reinforcing rod (8) is provided with a hanging rod (20) for hanging steel bar net B (19).

9. The foundation pit slope dewatering soil-nailing wall structure according to claim 8, characterized in that, The elastic reset structure (16) is a reset spring or an elastic sheet.

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