Method for backfilling earthwork of grid storage foundation in limited space

Abstract

The invention provides a grid storage bin foundation earthwork backfilling method in a limited space, which comprises the following steps of: marking a backfilling height on the inner wall of a grid storage bin, and mounting a sunken soil conveying hose on the upper part of a discharge hole of each corresponding grid space on a storage bin top plate; the backfill soil is conveyed to the external area of the storage bin foundation to be stacked and then conveyed to a storage top plate to be stacked; backfill earthwork is backfilled to all grid areas on the top plate of the storage bin through unloading holes of all grid spaces of the top plate of the storage bin and through sunken soil conveying hoses; and after backfilling to a preset thickness, compacting layer by layer, and backfilling to a designed elevation layer by layer to finish backfilling of the grid storage bin foundation. According to the construction mode, cost is saved, and the construction period is shortened; the sunken soil conveying hose can reduce impact force generated in the process that earthwork falls from the high altitude, raise dust and silo wall pollution are reduced, the mode that backfill soil is backfilled from the periphery to the center can be controlled, and the secondary earthwork leveling workload is reduced. The sinking type soil conveying pipe is simple in structure, fast to assemble and simple in construction process.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation earth backfilling for grid storage warehouses in restricted spaces, and more specifically, to a method for foundation earth backfilling of grid storage warehouses in restricted spaces. Background Art

[0002] With the rapid development of the times, the capacity requirements for storage warehouses in industrial buildings have gradually increased. To meet their large-capacity bearing capacity, some storage warehouses adopt a combined structure of steel warehouses + concrete grid shear wall foundations. The concrete grid shear wall foundation is designed as a bottom raft + intermediate grid shear walls and an upper roof slab. A steel warehouse is installed on the upper part of the roof slab, and the vertically and horizontally intersecting shear walls are used to improve the overall bearing capacity and shear resistance of the storage warehouse. According to its structural requirements and space utilization requirements, the grid space divided by the shear walls between the raft and the roof slab is backfilled with earth to a certain height to serve as a power distribution room, control room, or other functional rooms. However, during the process of earth backfilling in the grid space divided by the shear walls, since the shear walls divide the space and there are small access openings left on the shear walls, mechanical equipment cannot enter for backfilling, and the backfill soil can only be transported into the space by manually pushing small carts, resulting in large limitations in backfilling, a long backfilling cycle, and relatively high backfilling costs. Therefore, there is a need to propose a construction method for foundation earth backfilling of grid storage warehouses in restricted spaces to accelerate the construction speed and reduce the construction cost of backfilling. Summary of the Invention

[0003] In view of this, the present invention proposes a method for foundation earth backfilling of grid storage warehouses in restricted spaces, including:

[0004] Step 1: Mark the backfilling height on the inner wall of the grid storage warehouse, and install a sunken soil conveying hose above the discharge holes of each grid space on the storage warehouse roof slab.

[0005] Step 2: First, transport the backfill soil to the external area of the storage warehouse foundation for stacking.

[0006] Step 3: Then, transport the backfill soil to the storage warehouse roof slab for stacking.

[0007] Step 4: On the storage warehouse roof slab, backfill the backfill soil into each grid area through the discharge holes of each grid space on the storage warehouse roof slab and the sunken soil conveying hose.

[0008] Step 5: After backfilling to the preset thickness, compact it layer by layer and backfill it layer by layer to the design elevation to complete the backfilling work of the grid storage warehouse foundation.

[0009] Further, before transporting the backfill soil to the storage warehouse roof slab, a platform is trimmed for the backfill soil, and the backfill soil is transported to the storage warehouse roof slab for stacking through this platform.

[0010] Furthermore, the length of the sunken soil conveying hose is determined according to the elevation from the top plate of the storage bin to the top of the backfill soil, and the distance between its lower pipe orifice and the backfill is controlled within 20 cm.

[0011] Furthermore, when backfilling the soil with the sunken soil conveying hose, the soil is backfilled in a way from the periphery to the center.

[0012] Furthermore, the sunken soil conveying hose includes a hose body, a pipe clamp and a buffer pipe orifice; the first end of the hose body is connected to the discharge hole of the top plate of the storage bin, the second end is provided with the buffer pipe orifice, and the adjusting pipe clamp is provided on the buffer pipe orifice, which can adjust the length of the buffer pipe orifice, so as to control the distance between the lower end of the buffer pipe orifice and the backfill soil.

[0013] Furthermore, the buffer pipe orifice is made of geotextile.

[0014] Furthermore, a sunken fixed joint is also provided at the first end of the hose body, and its upper outer diameter can be fixed above the discharge hole.

[0015] Furthermore, a flange connector is also provided between the sunken fixed joint and the hose body, which can quickly connect the sunken fixed joint and the hose body.

[0016] Furthermore, the hose body is a PVC transparent steel wire reinforced hose.

[0017] Furthermore, the upper outer diameter of the sunken fixed joint is larger than the inner diameter of the discharge hole, and the lower outer diameter of the sunken fixed joint is slightly smaller than the inner diameter of the discharge hole.

[0018] A method for backfilling the foundation soil of a grid storage bin in a confined space provided by the present invention has the following advantages: this construction method saves a large amount of costs and greatly shortens the construction period; the sunken soil conveying hose can reduce the impact force during the process of the soil falling from a high altitude, reduce dust and pollution of the bin wall; the sunken soil conveying hose can control the way of backfilling the soil from the periphery to the center, greatly reducing the workload of secondary soil leveling; the overall structure of the sunken soil conveying pipe is simple, the assembly is fast and convenient, and the materials for its composition are easily available at the construction site; this construction process is simple and easy to operate, has strong applicability, and meets the construction requirements. Description of the Drawings

[0019] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0020] Figure 1Flow chart of the earthwork backfilling method provided by the embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the external construction of the grid storage bin provided by the embodiment of the present invention;

[0022] Figure 3 1-1 sectional view of the grid storage bin provided by the embodiment of the present invention;

[0023] Figure 4 2-2 sectional view of the grid storage bin provided by the embodiment of the present invention;

[0024] Figure 5 3-3 sectional view of the grid storage bin provided by the embodiment of the present invention;

[0025] Figure 6 Overall structure schematic diagram of the sunken soil conveying hose provided by the embodiment of the present invention;

[0026] In the figure, 1, storage bin top plate; 2, storage bin outer wall; 3, storage bin foundation raft; 4, storage bin outer wall opening; 5, small bulldozer; 6, backfill soil; 7, excavator; 8, discharge hole; 9, sunken soil conveying hose; 10, storage bin inner wall opening; 11, shear wall; 12, backfill grid; 13, sunken fixed joint; 14, flange connector; 15, hose body (PVC transparent steel wire reinforced hose); 16, pipe hoop; 17, buffer pipe orifice. Detailed implementation manners

[0027] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] See Figures 1-6 As shown, it is a method for backfilling the foundation earthwork of a grid storage bin in a restricted space provided by the embodiment of the present invention, including:

[0029] Step 1: Mark the backfilling height on the inner wall of the grid storage bin, and install a sunken soil conveying hose 9 above the discharge hole 8 in each grid space corresponding to the storage bin top plate 1;

[0030] Step 2: First, transport the backfill soil to the external area of the storage bin foundation for stacking;

[0031] Step 3: Then, transport the backfill soil to the storage bin top plate 1 for stacking;

[0032] Step 4: On the top plate 1 of the storage bin, backfill the earthwork through the discharge holes 8 in each grid space of the top plate 1 of the storage bin, and backfill the earth to each grid area through the sunken soil conveying hose 9.

[0033] Step 5: After backfilling to the preset thickness, compact it in layers and backfill layer by layer to the designed elevation to complete the backfilling work of the grid storage bin foundation.

[0034] In this embodiment, before the backfill soil is transported to the top plate of the storage bin, a platform is trimmed for the backfill soil, and the backfill soil is transported to the top plate of the storage bin through this platform and stacked.

[0035] In this embodiment, the length of the sunken soil conveying hose is determined according to the elevation from the top plate of the storage bin to the top elevation of the backfill soil, and the distance between the lower pipe orifice and the backfill is controlled within 20 cm.

[0036] In this embodiment, when the sunken soil conveying hose backfills the earthwork, the earthwork is backfilled in a manner from the periphery to the center.

[0037] In this embodiment, with reference to Figure 6 As shown, the sunken soil conveying hose 9 includes a hose body 15, a pipe clamp 16 and a buffer pipe orifice 17; the first end of the hose body 15 is connected to the discharge hole 8 of the top plate 1 of the storage bin, the second end is provided with the buffer pipe orifice 17, and the buffer pipe orifice 17 is provided with the adjusting pipe clamp 16, which can adjust the length of the buffer pipe orifice 17, so as to control the distance between the lower end of the buffer pipe orifice 17 and the backfill soil.

[0038] In this embodiment, the buffer pipe orifice 17 is made of geotextile.

[0039] In this embodiment, the first end of the hose body 15 is further provided with a sunken fixed joint 13, and its upper outer diameter can be fixed above the discharge hole 8.

[0040] In this embodiment, a flange connector 14 is further provided between the sunken fixed joint 13 and the hose body 15, which can quickly connect the sunken fixed joint 13 and the hose body 15.

[0041] In this embodiment, the hose body 15 is a PVC transparent steel wire reinforced hose.

[0042] In this embodiment, the upper outer diameter of the sunken fixed joint 13 is larger than the inner diameter of the discharge hole 8, and the lower outer diameter of the sunken fixed joint 13 is slightly smaller than the inner diameter of the discharge hole 8.

[0043] The most preferred embodiment disclosed in the embodiment of the present invention is as follows, with reference to Figures 1-6 As shown:

[0044] (1). Figure 2 This is the process for backfilling the foundation soil of a restricted grid silo. The restricted grid silo consists of a bottom foundation raft 3, a silo outer wall 2, internal shear walls 11, and a silo top plate 1. Since there is only an opening 4 in the silo outer wall with dimensions of 1000mm * 1500mm, and its internal shear walls divide the silo into a grid shape, conventional backfilling methods are restricted. Therefore, the method of this patent is adopted: the excavator 7 transports the backfill soil to the upper part of the silo top plate, and then the small bulldozer 5 pushes the backfill soil 6 on the upper part of the silo to each discharge hole 8 on the silo top plate, and backfills it into each grid silo through the sunken soil conveying pipe 9;

[0045] (2). Figure 3 This is the 1-1 sectional view of the restricted space grid silo. The sunken soil conveying pipe 9 is installed into the discharge hole 8, and the backfill soil 6 is conveyed into the grid silo through the sunken soil conveying pipe 9. The length of the soil conveying pipe is determined according to the elevation from the silo top plate to the top of the backfill soil, but the distance between its pipe orifice and the backfill is controlled within 20cm by adjusting the pipe clamp 14. The construction workers control the pipe orifice of the soil conveying pipe to backfill from the periphery to the interior of the grid silo, which can reduce the workload of secondary backfilling and leveling;

[0046] (3). Figure 4 This is the 2-2 sectional view of the restricted space grid silo. It is divided into several restricted space grids by the vertically and horizontally intersecting shear walls. There are openings 10 on the internal shear walls, and discharge holes 8 with a diameter of 500.00mm are distributed at the top of each grid silo;

[0047] (4). Figure 5 This is the 3-3 sectional view of the restricted space grid silo. The backfill bottom elevation is -1.2m, and the top elevation is -0.2m. The construction workers control the soil conveying pipe in the silo to backfill the soil in a way from the periphery to the center;

[0048] (5). Figure 6A kind of sunken soil conveying hose that is quickly assembled and easy to install, invented according to actual applications. Its advantages are simple and fast construction and installation, controlling the conveying aperture, easy availability of assembly materials at the construction site, and having buffering to reduce dust and prevent inner wall pollution. It is assembled above the top plate and lowered into each grid storage bin through the discharge hole 8. It consists of five parts: the sunken fixed joint 13, which is fixed above the discharge hole through an outer diameter of 700 mm at the upper part and has an inner diameter of 400 mm for conveying and backfilling soil. The flange connector 14 quickly connects the sunken fixed joint with the soil conveying pipe, which is firm and can withstand the impact of backfill soil falling from a height. 15 is the main body of the soil conveying hose, which is a PVC transparent steel wire reinforced hose with a diameter of 400 mm. 16 is a pipe clamp, whose function is to fix the buffer pipe orifice on the PVC transparent steel wire reinforced soil conveying hose 15. The length of the buffer pipe orifice 17 can be controlled by adjusting the pipe clamp 16. 17 is the buffer pipe orifice, which is made of geotextile. The distance between it and the backfill soil can be controlled by the pipe clamp 16, which can also improve the buffering force of the soil conveying pipe for backfill soil falling from a height and reduce dust and inner wall pollution.

[0049] In summary, a method for backfilling foundation soil in a grid storage bin under a confined space provided by an embodiment of the present invention has the following beneficial technical effects: This construction method saves a large amount of costs and greatly shortens the construction period; the sunken soil conveying hose can reduce the impact force of the soil falling from a height, reduce dust and bin wall pollution; the sunken soil conveying hose can control the way of backfilling the soil from the surrounding to the center, greatly reducing the workload of secondary soil leveling; the overall structure of the sunken soil conveying pipe is simple, the assembly is fast and convenient, and the materials for its composition are easily available at the construction site; this construction process is simple and easy to operate, has strong applicability, and meets the construction requirements.

[0050] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.

[0051] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0052] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A method for backfilling the foundation earthwork of a grid storage bin in a restricted space, characterized in that, Including: Step 1: Mark the backfill height on the inner wall of the grid storage bin, and install a sunken soil conveying hose above the discharge hole of each grid space on the storage bin roof; Step 2: First, transport the backfill soil to the external area of the storage bin foundation for stacking; Step 3: Then, transport the backfill soil to the storage bin roof for stacking; Step 4: On the storage bin roof, fill the backfill soil into each grid area through the discharge hole of each grid space on the storage bin roof and the sunken soil conveying hose; Step 5: After backfilling to the preset thickness, compact it layer by layer and backfill layer by layer to the design elevation to complete the backfilling work of the grid storage bin foundation.

2. The method for backfilling the foundation earthwork of the grid storage bin under the restricted space according to claim 1, characterized in that, Before transporting the backfill soil to the storage bin roof, a platform is trimmed for the backfill soil, and the backfill soil is transported to the storage bin roof for stacking through this platform.

3. The method for backfilling the foundation earthwork of the grid storage bin under the confined space according to claim 1, characterized in that, The length of the sunken soil conveying hose is determined according to the elevation from the storage bin roof to the top of the backfill soil, and the distance between its lower pipe orifice and the backfill is controlled within 20 cm.

4. The method for backfilling the foundation earthwork of the grid storage bin under the confined space according to claim 1, characterized in that, When backfilling the soil with the sunken soil conveying hose, the soil is backfilled in a way from the periphery to the center.

5. The method for backfilling the foundation earthwork of the grid storage bin under a confined space according to any one of claims 1-4, characterized in that, The sunken soil conveying hose includes a hose body, a pipe clamp and a buffer pipe orifice; the first end of the hose body is connected to the discharge hole of the storage bin roof, the second end is provided with the buffer pipe orifice, and the buffer pipe orifice is provided with the adjusting pipe clamp, which can adjust the length of the buffer pipe orifice, so as to control the distance between the lower end of the buffer pipe orifice and the backfill soil.

6. The method for backfilling the foundation earthwork of the grid storage bin under the limited space according to claim 5, characterized in that, The buffer pipe orifice is made of geotextile.

7. The method for backfilling the foundation earthwork of the grid storage bin under the restricted space according to claim 5, characterized in that, The first end of the hose body is also provided with a sunken fixed joint, and its upper outer diameter can be fixed above the discharge hole.

8. The method for backfilling the foundation earthwork of the grid storage bin under restricted space according to claim 7, characterized in that, A flange connector is also provided between the sunken fixed joint and the hose body, which can quickly connect the sunken fixed joint and the hose body.

9. The method for backfilling the foundation earthwork of the grid storage bin under the restricted space according to claim 5, characterized in that, The hose body is a PVC transparent steel wire reinforced hose.

10. The method for backfilling the foundation earthwork of the grid storage bin under the restricted space according to claim 7, characterized in that, The upper outer diameter of the sunken fixed joint is larger than the inner diameter of the discharge hole, and the lower outer diameter of the sunken fixed joint is slightly smaller than the inner diameter of the discharge hole.

Images