A simple rammed earth wall special-shaped steel formwork structure and rammed earth wall ramming construction method

Abstract

The present invention discloses a simple rammed earth wall special-shaped steel formwork structure, including a strip-shaped formwork; a tie rod is provided on the formwork; an angle is formed between the tie rod and the formwork; an anchoring structure is provided on the tie rod; the formwork, the tie rod and the anchoring structure are all made of metal. A rammed earth wall tamping construction method is also disclosed, including the following steps: preparing the simple rammed earth wall special-shaped steel formwork structure; tamping the rammed earth foundation, placing the formwork and the tie rod according to the rammed earth wall layout position; connecting the anchoring structure on the tie rod with the rammed earth foundation; filling the edge of the formwork and tamping in layers; filling the formwork and tamping; after one layer is tamped, the simple rammed earth wall special-shaped steel formwork structure is removed. The simple rammed earth wall special-shaped steel formwork structure and the rammed earth wall tamping construction method provided by the present invention greatly improve the rammed earth wall construction efficiency in the protection and repair projects of ancient buildings and ancient sites.

Description

Technical Field

[0001] The invention relates to the field of cultural relics and buildings, and in particular to a simple rammed earth wall special-shaped steel formwork structure and a rammed earth wall ramming construction method used in the protection and repair of ancient buildings and ancient sites. Background Art

[0002] The restoration of cultural relics buildings must follow the four preservation principles as required, namely: preserving the original form, original structure, original materials, and original craftsmanship, but this does not completely exclude the use of modern scientific and technological conditions to improve the efficiency of cultural relics restoration construction.

[0003] For example, in the field of cultural relics restoration, technologies such as X-ray flaw detection, infrared thermal imaging detection, laser cleaning, 3D printing technology, and three-dimensional video microscope observation have made breakthrough progress in recent years, and modern technical equipment such as electric constant temperature water boxes and electric constant temperature drying boxes are widely used.

[0004] In the field of cultural relics security, modern advanced technology is more relied on. Intelligent security and fire protection systems based on the Internet of Things, big data, cloud computing and other technologies are increasingly used in cultural relics protection projects. Modern technology is also widely used in the protection and monitoring of immovable cultural relics. The comprehensive use of modern sensing technology, communication technology, signal processing and analysis technology can build a more comprehensive cultural relics building monitoring system, and can rely on modern Internet of Things technology to continuously and in real time monitor and evaluate the safety status of cultural relics buildings, greatly improving the safety of cultural relics operations and the management level of cultural relics.

[0005] It is also inevitable to apply a large number of modern technologies and equipment in the maintenance of cultural relics buildings. Modern scaffolding and construction elevators can greatly improve the efficiency and safety of ancient building repair construction. Three-dimensional imaging technology and 3D printing technology can more efficiently repair and replace cultural relics building components.

[0006] However, in the rammed earth wall construction technology used in the protection and repair of traditional ancient buildings and ancient sites, the efficiency of rammed earth wall construction is low due to the simple tools and unreasonable construction methods. Traditional rammed earth wall construction uses wooden formwork, which is complicated to process and install, and is easily worn out during construction and cannot be reused. Traditional wooden formwork is straight and has no arc shape, which is inconsistent with the appearance of the rammed earth wall of the city wall. After the ramming is completed, the slope needs to be cut for each layer. Summary of the invention

[0007] The purpose of the present invention is to provide a simple rammed earth wall special-shaped steel formwork structure and a rammed earth wall ramming construction method, which greatly improves the rammed earth wall construction efficiency in the protection and repair projects of ancient buildings and ancient sites.

[0008] To achieve the above-mentioned purpose, the present invention provides a simple rammed earth wall special-shaped steel formwork structure, including a strip-shaped formwork; a tie rod is provided on the formwork; an angle is formed between the tie rod and the formwork; an anchor structure is provided on the tie rod; the formwork, tie rod and anchor structure are all made of metal.

[0009] As a further improvement of the present invention, the template includes a strip-shaped template fold; the lower edge of the template fold is provided with a lower folding edge, and the upper edge of the template fold is provided with an upper folding edge.

[0010] As a further improvement of the present invention, the folded plate surface of the template is in an outwardly convex arc shape.

[0011] As a further improvement of the present invention, the lower folding edge is parallel to the upper folding edge and both are located on the side of the folding plate in the template facing outward; the angle between the plane where the lower folding edge is located and the fold in the template is the template edge folding angle α.

[0012] As a further improvement of the present invention, a first through hole is provided on the template, and the pull rod passes through the first through hole.

[0013] As a further improvement of the present invention, the pull rod comprises a pull rod body and a limit portion connected to each other; the pull rod body passes through the first through hole.

[0014] As a further improvement of the present invention, the anchoring structure is an anchoring nail; a second through hole is provided on the side wall of the pull rod, and the anchoring nail passes through the second through hole.

[0015] To achieve the above-mentioned purpose, the present invention also provides a rammed earth wall tamping construction method, comprising the following steps: preparing the simple rammed earth wall special-shaped steel formwork structure; compacting the rammed earth foundation, placing the formwork and tie rods according to the rammed earth wall layout position; connecting the anchor structure on the tie rod to the rammed earth foundation; filling the edge of the formwork and compacting it layer by layer; filling the formwork and compacting it; after compacting one layer, removing the simple rammed earth wall special-shaped steel formwork structure.

[0016] As a further improvement of the present invention, after the rammed earth foundation is compacted, the template is placed according to the rammed earth wall layout position, and the pull rod is passed through the first through hole set on the template; the anchoring structure is an anchor nail, and the anchor nail is passed through the second through hole set on the pull rod and nailed into the rammed earth foundation, the nailing depth is 100-200mm, and the retention length is set according to the rammed earth layer thickness.

[0017] As a further improvement of the present invention, after each layer is compacted and the simple rammed earth wall special-shaped steel formwork structure is removed, the simple rammed earth wall special-shaped steel formwork structure is used to continue to ram in layers and lift up layer by layer.

[0018] Beneficial Effects

[0019] Compared with the prior art, the advantages of the simple rammed earth wall special-shaped steel formwork structure and the rammed earth wall ramming construction method of the present invention are:

[0020] 1. It not only greatly improves the efficiency of rammed earth wall construction in the protection and repair projects of ancient buildings and ancient sites, but also its construction method can quickly recycle the simple rammed earth wall special-shaped steel formwork structure, saving construction costs and being beneficial to ecological environment protection.

[0021] 2. The template can be directly processed and formed by the manufacturer. It is quick to install and disassemble during the construction process. It is sturdy and durable, and even slight deformation is easier to adjust.

[0022] 3. The template can be processed and formed according to the current status of the cultural relics, and because the folded board surface of the template is in an outward convex arc shape, it can be formed in one step after tamping, without the need to cut the slope and save rammed earth materials. The construction efficiency of template processing, installation, and disassembly is improved by more than 30%.

[0023] 4. The formwork, tie rods and anchor nails can be separated from each other, which is convenient for storage, transportation and dismantling after layered ramming.

[0024] 5. The formwork, tie rods and anchor nails are all made of steel. Compared with traditional formwork, steel formwork is easy and quick to disassemble and assemble, can be reused many times, and the steel material is recyclable.

[0025] The present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, which are used to illustrate embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A stereogram of the template;

[0028] Figure 2 is a cross-sectional view of the template;

[0029] Figure 3 is a schematic diagram of the structure of the pull rod;

[0030] Figure 4 This is the assembly drawing of the special-shaped steel formwork structure of a simple rammed earth wall;

[0031] Figure 5 This is a diagram of the use status of the special-shaped steel formwork structure of a simple rammed earth wall;

[0032] Figure 6This is a schematic diagram of filling soil at the edge of the formwork;

[0033] Figure 7 This is a schematic diagram of the compacted soil in the formwork. DETAILED DESCRIPTION

[0034] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0035] Example

[0036] The specific embodiments of the present invention are as follows Figures 1 to 7 As shown, a simple rammed earth wall special-shaped steel formwork structure includes a strip-shaped formwork 1. A tie rod 2 is provided on the formwork 1. The tie rod 2 forms an angle with the formwork 1. An anchoring structure is provided on the tie rod 2. The formwork, the tie rod and the tie rod anchoring nails are all made of metal, specifically steel. Compared with traditional formwork, the steel formwork is easy to disassemble and assemble, can be reused many times, and the steel material is recyclable.

[0037] The template 1 comprises a strip-shaped template middle fold 11. The lower edge of the template middle fold 11 is provided with a lower folding edge 12, and the upper edge of the template middle fold 11 is provided with an upper folding edge 13.

[0038] The plate surface of the template middle fold 11 is in an outward convex arc shape. In this embodiment, the plate surface of the template middle fold 11 is in an outward convex inferior arc shape, and the curvature is set according to the design or the remains of the rammed earth wall.

[0039] The lower folding edge 12 is parallel to the upper folding edge 13 and is located on the side of the template fold 11 facing outward. The angle between the plane where the lower folding edge 12 is located and the template fold 11 is the template edge folding angle α. The template edge folding angle α is set according to the slope of the earth wall. In this embodiment, the angle between the inclined surface of the earth wall 4 and the horizontal plane is 62.25°, and the template edge folding angle α is also 62.25°. The height of the template 1 is set according to the height of the layered ramming of the rammed earth wall. In this embodiment, the height of the template 1 is 200mm. The width range of the lower folding edge 12 and the upper folding edge 13 is between 30-50mm. The template 1 uses a steel plate with a thickness of 2mm.

[0040] The template 1 is provided with a plurality of first through holes 14, each of which is penetrated by a tie rod 2. In this embodiment, the first through holes 14 are arranged on the template middle fold 11 and the number is 3, and the spacing between adjacent first through holes 14 is 900 mm. The diameter of the first through hole 14 is 26 mm.

[0041] The tie rod 2 includes a tie rod body 21 and a limiter 22 connected to each other. The tie rod body 21 passes through the first through hole 14. The limiter 22 is also in a rod shape, and the angle between the limiter 22 and the tie rod body 21 is the same as the template edge angle α, which is also 62.25° in this embodiment. The tie rod 2 is a steel pipe. The length of the tie rod body 21 is preferably 600-1200mm. If it is too short, it is easy to expand the mold, and if it is too long, it is difficult to remove the mold.

[0042] The anchoring structure is an anchoring nail 3. A second through hole 23 is provided on the side wall of the pull rod body 21 of the pull rod 2, and the anchoring nail 3 passes through the second through hole 23 up and down. In this embodiment, the diameter of the second through hole 23 is 8 mm. The diameter of the pull rod 2 is 26 mm.

[0043] The anchor nail 3 is welded by a steel plate and a smooth steel bar with a diameter of 8 mm. The length of the anchor nail 3 must exceed the layer thickness of the rammed earth wall by 100-200 mm. If the length of the anchor nail 3 is too short, it cannot be anchored, and if it is too long, it is difficult to remove.

[0044] A rammed earth wall construction method comprises the following steps:

[0045] 1) Prepare a simple rammed earth wall special-shaped steel formwork structure. According to the slope of the rammed earth wall, the spacing between air holes, the layer thickness, etc., design and make the formwork 1, the tie rod 2 and the anchor nail 3.

[0046] 2) Tamp the rammed earth foundation and place formwork 1 according to the rammed earth wall layout.

[0047] 3) Pass the pull rod 2 through the first through hole 14 provided on the template 1 .

[0048] 4) The anchor nail 3 is passed through the second through hole 23 provided in the pull rod 2 and driven into the rammed earth foundation, the driving depth of which is 100-200 mm, and the retention length is set according to the thickness of the rammed earth layer.

[0049] 5) Fill the edge of the template 1 and compact it layer by layer. Use a leather hammer, stone pestle or iron pestle to compact it layer by layer. A small handheld air rammer can be used to improve the compaction efficiency and density. The edge of the template 1 refers to the approximately triangular area formed by the vertical line from the top of the arc-shaped template fold 11 and the template fold 11, such as Figure 6 If this area is rammed together with the rammed earth inside the template 1, it will not be easy to ram, so the area near the edge of the template 1 needs to be filled and rammed first.

[0050] 6) If Figure 7 As shown, fill the formwork 1 with soil, and compact it manually using a cluster rammer or a small machine. The soil needs to be higher than the formwork 1 when filling, and after tamping, it should be basically flush with the upper part of the formwork 1. Each layer needs to be tamped multiple times to achieve the required density.

[0051] 7) After one layer is compacted, remove the formwork, first pull out the anchor nails 3, then rotate and pull out the pull rods 2 in the same direction (to prevent damage to the pores), and finally remove the formwork 1.

[0052] 8) Place the template 1 on the next rammed earth wall, and repeat steps (2-7). Repeat this cycle, lifting and tamping layer by layer to achieve a ramming effect consistent with the original rammed earth wall.

[0053] The present invention has been described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A simple rammed earth wall special-shaped steel formwork structure, characterized in that: The invention comprises a strip-shaped template (1); a tie rod (2) is provided on the template (1); an angle is formed between the tie rod (2) and the template (1); an anchoring structure is provided on the tie rod (2); the template (1), the tie rod (2) and the anchoring structure are all made of metal, and the template (1) comprises a strip-shaped template fold (11); a lower folding edge (12) is provided on the lower edge of the template fold (11); an upper folding edge (13) is provided on the upper edge of the template fold (11); the lower folding edge (12) is parallel to the upper folding edge (13). The two guide rails (14) are arranged in a row and are all located on the outward side of the template middle fold (11); the angle between the plane where the lower fold edge (12) is located and the template middle fold (11) is the template edge fold angle α; the template (1) is provided with a first through hole (14); the pull rod (2) passes through the first through hole (14); the pull rod (2) includes a connected pull rod body (21) and a limiting portion (22); the pull rod body (21) passes through the first through hole (14); the angle between the limiting portion (22) and the pull rod body (21) is the same as the template edge fold angle α.

2. The simple rammed earth wall special-shaped steel formwork structure according to claim 1 is characterized in that: The plate surface of the fold (11) in the template is in an outwardly convex arc shape.

3. The simple rammed earth wall special-shaped steel formwork structure according to claim 1 is characterized in that: The anchoring structure is an anchoring nail (3); a second through hole (23) is provided on the side wall of the pull rod (2), and the anchoring nail (3) passes through the second through hole (23).

4. A rammed earth wall construction method, characterized in that The following steps are involved: Prepare the simple rammed earth wall special-shaped steel formwork structure described in claim 1; compact the rammed earth foundation, place the formwork (1) and the tie rod (2) according to the rammed earth wall layout position; connect the anchor structure on the tie rod (2) to the rammed earth foundation; fill the edge of the formwork (1) with soil and compact it layer by layer; The formwork (1) is filled with soil and compacted; after one layer is compacted, the simple rammed earth wall special-shaped steel formwork structure is removed.

5. A rammed earth wall construction method according to claim 4, characterized in that: After the rammed earth foundation is compacted, the template (1) is placed according to the rammed earth wall layout position, and the tie rod (2) is passed through a first through hole (14) provided on the template (1); the anchoring structure is an anchor nail (3), and the anchor nail (3) is passed through a second through hole (23) provided on the tie rod (2) and nailed into the rammed earth foundation, the nailing depth is 100-200 mm, and the retention length is set according to the rammed earth layer thickness.

6. A rammed earth wall construction method according to claim 4 or 5, characterized in that: After each layer is compacted and the simple rammed earth wall special-shaped steel formwork structure is removed, the simple rammed earth wall special-shaped steel formwork structure is used to continue layer-by-layer tamping and lifting.

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