A device for protecting the wall of a manually excavated pile

Abstract

The utility model discloses a manual hole digging pile wall protection device, including wall protection template, reinforcing mesh, wherein, the wall protection template is cylindrical, adopts a plurality of partial wall protection templates and is made into in proper order spliced, the wall protection template periphery is surrounded and is set a plurality of reinforcing mesh, and a plurality of reinforcing mesh are connected into cylindrical in proper order, the reinforcing mesh is close to stake hole hole wall, and reserves the gap between with wall protection template, every partial wall protection template bottom of a plurality of partial wall protection templates is set up a wedge block reserved card slot, is used for installing wedge block, and wedge block passes through wall protection template, and wedge block is fixed on wall protection template through screw lock, and the space that wedge block occupies provides the feeding port for concrete pouring, the utility model discloses can effectively guarantee the integrity of wall protection, and the perpendicularity deviation is small.

Description

Technical Field

[0001] This utility model belongs to the field of geotechnical engineering, and specifically relates to a device for protecting the wall of manually excavated bored piles. Background Technology

[0002] Manually excavated bored piles are widely used in foundation engineering due to their advantages such as simple equipment, low cost, and high bearing capacity. However, traditional manual excavated bored pile construction suffers from problems such as gaps easily appearing at the joints of the retaining wall formwork, resulting in poor overall integrity and low strength of the retaining wall formwork; deviations in verticality are prone to occur during construction, making quality control difficult; and the construction process is time-consuming and slow in progress. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a device for protecting the wall of manually excavated piles, which can effectively ensure the integrity of the wall and minimize verticality deviation.

[0004] Technical solution: The present invention provides a retaining wall device for manually excavated bored piles, comprising a retaining wall template and a steel mesh. The retaining wall template is cylindrical and is formed by sequentially splicing multiple segmented retaining wall templates. Multiple steel meshes are arranged around the outer periphery of the retaining wall template, and the multiple steel meshes are sequentially connected to form a cylindrical shape. The steel meshes are close to the pile hole wall, and a gap is reserved between them and the retaining wall template.

[0005] Furthermore, the plurality of segmented retaining wall templates include a first retaining wall template, a second retaining wall template, a third retaining wall template, and a fourth retaining wall template connected in sequence, with adjacent segmented retaining wall templates fixedly connected to form an integral retaining wall template.

[0006] Furthermore, the first, second, third, and fourth protective wall templates all have the same thickness and height.

[0007] Furthermore, a radial steel plate is fixedly installed on each of the two end faces of the first, second, third, and fourth protective wall templates.

[0008] Furthermore, the outer side of the radial steel plate is flush with the outer side of the segmented retaining wall template, and the inner side of the radial steel plate is higher than the inner side of the segmented retaining wall template; multiple bolt holes are opened in the part of the radial steel plate that protrudes from the inner side of the segmented retaining wall template, and adjacent segmented retaining wall templates are connected by bolts.

[0009] Furthermore, the curvature of the steel mesh is the same as that of the segmented retaining wall template.

[0010] Furthermore, each of the multiple segmented retaining wall templates has a wedge-shaped block pre-reserved slot at its bottom for installing the wedge-shaped block, which passes through the retaining wall template.

[0011] Furthermore, the wedge-shaped block is a triangular prism made of iron.

[0012] Beneficial effects: Compared with the prior art, the significant technical effects of this utility model are as follows: (1) The use of segmented retaining wall templates significantly improves the compressive bearing capacity compared with traditional wooden or simple templates, effectively resisting the lateral earth pressure of the pile hole wall and avoiding the risk of template deformation or collapse; (2) The segmented templates are connected by radial steel plates and bolts (steel plates with bolt holes and bolts for fixing), with no obvious gaps at the splicing points, forming a complete and closed overall template structure, improving the overall integrity of the structure; (3) The retaining wall template is an assemblable segmented structure (4 segmented templates), which can be quickly assembled and disassembled by bolts, greatly shortening the construction time of a single section of retaining wall compared with the traditional template construction and dismantling. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first protective wall template in this utility model;

[0015] Figure 3 This is a schematic diagram of the radial steel plate in this utility model;

[0016] Figure 4 This is a schematic diagram of the connection between two adjacent radial steel plates in this utility model;

[0017] Figure 5 This is a schematic diagram showing the connection between the wedge-shaped block and the segmented retaining wall template in this utility model;

[0018] Figure 6 This is a schematic diagram showing the connection between the wedge block and the segmented retaining wall template at another angle in this utility model;

[0019] Figure 7 A schematic cross-sectional view of the construction of two manually excavated bored pile retaining devices;

[0020] Figure 8 This is a construction flowchart of the manually excavated pile wall protection device of this utility model. Detailed Implementation

[0021] The technical solution of this utility model will now be described in detail with reference to specific embodiments and accompanying drawings.

[0022] like Figure 1-7As shown, the manual excavation pile retaining wall device of this utility model involves the following components: first retaining wall template 101, second retaining wall template 102, third retaining wall template 103, fourth retaining wall template 104, radial steel plate 105, bolt hole 106, bolt 107, steel mesh 2, feed port 3, wedge block 4, wedge block reserved slot 401, screw lock 5, concrete retaining wall hole opening guard ring 6, concrete 7.

[0023] like Figure 1 As shown, the manual excavation pile retaining wall device of this utility model includes a retaining wall template, a steel mesh 2, and wedge blocks 4. The retaining wall template is cylindrical and is composed of multiple segmented retaining wall templates assembled sequentially. In this embodiment, the multiple segmented retaining wall templates include a first retaining wall template 101, a second retaining wall template 102, a third retaining wall template 103, and a fourth retaining wall template 104 connected sequentially. Adjacent segmented retaining wall templates are fixedly connected to form an integral retaining wall template. The first retaining wall template 101, the second retaining wall template 102, the third retaining wall template 103, and the fourth retaining wall template 104 have the same thickness and height. In this embodiment, the thickness is 5mm, the height is 1m, and the distance between the outer wall of the template and the pile hole wall is 50mm.

[0024] like Figure 1 and Figure 2 As shown, a radial steel plate 105 is welded to each of the two end faces of the first retaining wall template 101, the second retaining wall template 102, the third retaining wall template 103, and the fourth retaining wall template 104. It is worth noting that the radial direction here refers to the direction in which the width of the steel plate extends (i.e., the direction in which it protrudes from the retaining wall template).

[0025] like Figure 2-4 As shown, multiple bolt holes 106 are provided on the portion of the radial steel plate 105 that protrudes from the inner side of the segmented retaining wall template, and adjacent segments of the retaining wall template are connected by bolts 107. In this embodiment, three bolt holes 106 are provided on each radial steel plate 105. The first retaining wall template 101, the second retaining wall template 102, the third retaining wall template 103, and the fourth retaining wall template 104 are circumferentially connected by the radial steel plate 105, the bolt holes 106, and the bolts 107 to form the retaining wall template.

[0026] like Figure 1 As shown, multiple steel mesh panels 2 are arranged around the outer perimeter of the retaining wall template, and these panels are sequentially connected to form a cylindrical shape. The steel mesh panels 2 are close to the wall of the pile hole, with a pre-existing gap between them and the retaining wall template. In this embodiment, the spacing between the steel mesh panels 2 and the retaining wall template is 40mm, and adjacent steel mesh panels 2 are connected by binding. The curvature of the steel mesh panels 2 is the same as that of the segmented retaining wall template. In this embodiment, the steel mesh panels 2 are made of HPB300 steel bars with a diameter of 6mm and a grid spacing of 200mm × 200mm.

[0027] like Figure 1 , Figure 5 and Figure 6 As shown, a wedge-shaped block pre-reserved slot 401 is opened at the bottom of the retaining wall template for installing wedge-shaped blocks 4. The function of the wedge-shaped blocks 4 is to provide a feed port for the concrete pouring of the next section of the manually excavated pile retaining wall device. The wedge-shaped blocks 4 pass through the retaining wall template. The wedge-shaped blocks 4 are iron triangular prisms, and in this embodiment, they are right-angled triangles with a height of 60mm and a base of 60mm × 60mm. In this embodiment, the first retaining wall template 101, the second retaining wall template 102, the third retaining wall template 103, and the fourth retaining wall template 104 are each provided with a wedge-shaped block pre-reserved slot 401 at the bottom. Each wedge-shaped block pre-reserved slot 401 is used to install one wedge-shaped block 4, and the wedge-shaped blocks 4 are fixed to the retaining wall template by screws and fasteners 5. Figure 7 As shown, the wedge block 4 occupies its own volume space before pouring. After pouring, the protective template is disassembled and the wedge block 4 is removed. The space occupied by the wedge block 4 is used as the feed inlet 3 reserved for the next pouring.

[0028] This invention has the advantages of high wall strength, good integrity, and controllable construction quality. It is also convenient and efficient to assemble and disassemble, and can be recycled, which can significantly improve the construction efficiency and economy of manually excavated bored piles.

[0029] like Figure 7 and Figure 8 As shown, the construction process of the manually excavated bored pile retaining wall device of this utility model is as follows:

[0030] S1: Measure and lay out the site after leveling, determine and mark the location of the pile hole, and then install the concrete retaining ring 6 at the hole opening;

[0031] S2: After the concrete strength in the concrete retaining ring 6 at the hole opening reaches the standard, manual excavation will be carried out in sections, with each section having an excavation depth of 1 m.

[0032] S3: Multiple steel mesh panels 2 are installed close to the borehole wall. Then, the first protective wall template 101, the second protective wall template 102, the third protective wall template 103 and the fourth protective wall template 104 are circumferentially connected by radial steel plates 105, bolt holes 106 and bolts 107 welded on the protective wall template to form an integral protective wall template, which serves as a single section of the protective wall template. After the protective wall template is installed, wedge blocks 4 are fixed at the wedge block reserved slots 401 of each section of the protective wall template. Then, protective wall concrete is poured through the top of the section.

[0033] S4: After the concrete reaches the required strength, the cylindrical retaining wall formwork is removed, while the wedge block 4 remains fixed on the retaining wall formwork 1. The hole formed in the space originally occupied by the wedge block 4 serves as the feed inlet 3 for the next section of pouring.

[0034] S5: Continue excavating downwards for 1 m, and install the steel mesh 2, retaining wall template and wedge block 4 according to the above steps S3 and S4. Pour concrete through the feed inlet 3 reserved in the previous section.

[0035] S6: Repeat step S5, constructing downwards segment by segment until the designed pile depth is reached.

[0036] Therefore, when installing multiple manually excavated pile wall protection devices, the construction adopts segmented excavation + segmented wall protection (each segment excavation depth is 1m, matching the height of the template). Combined with the pre-positioning of the hole opening protection ring, the verticality of the pile hole can be precisely controlled, reducing problems such as pile hole deviation and uneven wall thickness caused by relying on manual experience in traditional construction, and ensuring that the final pile body meets the design requirements.

Claims

1. A device for retaining walls of manually excavated bored piles, characterized in that: Includes retaining wall template and steel mesh (2), wherein the retaining wall template is cylindrical and is made by splicing multiple segmented retaining wall templates in sequence; Multiple steel meshes (2) are arranged around the outer periphery of the retaining wall template, and the multiple steel meshes (2) are connected in sequence to form a cylindrical shape; the steel meshes (2) are close to the wall of the pile hole, and a gap is reserved between them and the retaining wall template.

2. The manually excavated pile wall protection device according to claim 1, characterized in that: The plurality of segmented retaining wall templates include a first retaining wall template (101), a second retaining wall template (102), a third retaining wall template (103), and a fourth retaining wall template (104) connected in sequence. Adjacent segmented retaining wall templates are fixedly connected to form an integral retaining wall template.

3. The manually excavated pile wall protection device according to claim 2, characterized in that: The first protective wall template (101), the second protective wall template (102), the third protective wall template (103), and the fourth protective wall template (104) all have the same thickness and height.

4. The manually excavated pile wall protection device according to claim 3, characterized in that: A radial steel plate (105) is fixedly installed on each of the two end faces of the first protective wall template (101), the second protective wall template (102), the third protective wall template (103), and the fourth protective wall template (104).

5. The manually excavated pile wall protection device according to claim 4, characterized in that: The outer side of the radial steel plate (105) is flush with the outer side of the segmented retaining wall template, and the inner side of the radial steel plate (105) is higher than the inner side of the segmented retaining wall template. Multiple bolt holes (106) are made in the part of the radial steel plate (105) that protrudes from the inner side of the segmented retaining wall template, and two adjacent segmented retaining wall templates are connected by bolts (107).

6. The manually excavated pile wall protection device according to claim 1, characterized in that: The arc of the steel mesh (2) is the same as the arc of the segmented retaining wall template.

7. The manually excavated pile wall protection device according to claim 1, characterized in that: Each of the multiple segmented retaining wall templates has a wedge-shaped pre-reserved slot (401) at the bottom for installing a wedge (4), which passes through the retaining wall template.

8. The manually excavated pile wall protection device according to claim 7, characterized in that: The wedge block (4) is a triangular prism made of iron.

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