A rammed earth wall steel formwork and rammed earth wall construction method

Abstract

The present invention discloses a rammed earth wall template, characterized in that the rammed earth wall template comprises two rows of steel templates arranged in parallel along the length direction of the wall, and width-limiting steel plates arranged on both sides of the steel templates along the wall thickness direction, the interval between the two rows of steel templates matches the thickness of the rammed earth wall, the width-limiting steel plates are provided with a plurality of bolt through holes and digital identifications matched with the bolt through holes, and the two ends of each steel template are respectively connected to the bolt through holes corresponding to the width-limiting steel plates on both sides by bolts, and the steel templates and the width-limiting steel plates are enclosed to form a rammed earth wall filling groove. The templates of the present invention are all mass-produced in factories, which are convenient to install, reduce the construction procedures at the construction site, and the components have good durability and can be reused many times, avoiding the construction inconvenience and waste of on-site templates caused by the current wooden template form, as well as the complex process of erection.

Description

Technical Field

[0001] The present invention relates to a rammed earth wall (such as raw earth building) steel formwork, which mainly uses two steel plates with grooves to fix the wall thickness through bolts, and assembles components on site to realize the template erection of the raw earth wall; the templates are all mass-produced in the factory, which is convenient for installation and reduces the construction procedures on the construction site. The components have good durability and can be reused many times, avoiding the construction inconvenience and waste of on-site templates caused by the current wooden formwork, as well as the complicated erection procedures. Background Art

[0002] Reinforced concrete has become the mainstream of modern architecture, but the sustainable development trend in recent years has brought earth buildings back into our sight. As architects and owners reach a consensus on environmental protection, earth buildings are also welcoming new development opportunities.

[0003] Earthen buildings refer to buildings whose main structure is made of unfired and simply processed raw earth. Earthen buildings can be made from local materials, are easy to construct, are inexpensive, warm in winter and cool in summer, save energy, and blend into nature, which is beneficial to environmental protection and ecological balance. They are widely used in small public buildings, homestays, and landscape buildings.

[0004] Modern new rammed earth walls are made of a mixture of soil, sand and aggregate. Tiles, bricks, pebbles, stone slabs and fibers can also be added to the mixed soil to increase the effect, or tools can be used to knock on the surface in a semi-dry state after ramming to form a specific texture effect. This one-piece molding using construction waste has better performance after being improved by raw soil. Summary of the invention

[0005] The purpose of the present invention is to design a rammed earth wall construction steel formwork to meet the needs of building industrialization in view of the above-mentioned existing problems.

[0006] The objective of the present invention is achieved through the following technical solutions: a rammed earth wall slab construction steel formwork, characterized in that the rammed earth wall slab construction formwork comprises two rows of steel formworks arranged in parallel along the length direction of the wall, and width-limiting steel plates arranged on both sides of the steel formworks along the thickness direction of the wall, the interval between the two rows of steel formworks matches the thickness of the rammed earth wall, the width-limiting steel plates are provided with a plurality of bolt through-holes and digital identifications matching the bolt through-holes, the two ends of each steel formwork are respectively connected to the bolt through-holes corresponding to the width-limiting steel plates on both sides thereof by bolts, and a rammed earth wall filling groove is enclosed between the steel formworks and the width-limiting steel plates.

[0007] Furthermore, the rammed earth wall filling groove is filled with raw soil or improved raw soil and then compacted.

[0008] Furthermore, the steel template is U-shaped, with its bottom surface arranged along the length direction of the wall, both ends protruding to the same side, and bolt holes arranged along the length direction of the wall are arranged at the protrusions, and the protrusions of the two rows of parallel steel templates are both facing outwards.

[0009] Furthermore, the steel formwork and the width-limiting steel plates are stacked layer by layer along the wall height direction, and the rammed earth wall filling trough enclosed by the steel formwork and the width-limiting steel plates is connected as a whole from top to bottom.

[0010] Furthermore, the steel template adopts 1500x1500cm 10cm thick steel plate, and 1500 x150 x 25cm steel bars are welded at both ends of the steel plate, and bolt holes are opened on the steel bars.

[0011] Furthermore, the width-limited steel plate is a 1500x700cm 10cm thick steel plate, and two rows of bolt holes are reserved at intervals of 50cm on its short side. The bolt holes are arranged symmetrically, and corresponding digital identifications are set next to the bolt holes.

[0012] The horizontally arranged steel formwork and the longitudinally arranged width-limited steel plate are connected by bolt anchoring to enclose a rammed earth wall filling groove, and raw soil or improved raw soil is filled in the rammed earth wall filling groove to fill the rectangular groove. Then, it is compacted layer by layer, the formwork is raised layer by layer, and finally the formwork is removed uniformly.

[0013] Another object of the present invention is to provide a rammed earth wall construction method, which utilizes rammed earth wall slab steel formwork for construction and can meet the needs of building industrialization.

[0014] The objective of the present invention is achieved through the following technical solution: A rammed earth wall construction method, characterized in that the construction method comprises the following steps:

[0015] A. Assemble several steel templates horizontally to form two rows of parallel steel templates;

[0016] B. Use the limited width steel plate to determine the wall thickness as needed, fix two rows of steel formwork on both sides of the limited width steel plate, connect the steel formwork and the limited width steel plate with bolts, and set perforated fastening bolts at a certain interval vertically;

[0017] C. Use steel formwork and width-limiting steel plates to enclose several rammed earth wall filling grooves, fill the rammed earth wall filling grooves with raw soil or improved raw soil and compact them;

[0018] D. Raise the formwork layer by layer, fill with raw soil or improved raw soil layer by layer and compact it;

[0019] E. Finally, remove the molds uniformly.

[0020] The templates of the present invention are all mass-produced in factories, which are convenient for installation, reduce the construction process at the construction site, and the components are durable and can be reused many times, avoiding the construction inconvenience and waste of on-site templates caused by the current wooden template form, as well as the complex process of erection. The beneficial effects of the present invention are: 1. The present invention can meet the needs of building industrialization, realize factory prefabrication, mass production, and on-site assembly. Prefabrication and processing according to the design size have the advantages of high production efficiency, energy saving, guaranteed engineering quality, recyclable prefabricated structural components, and less construction waste. 2. The present invention adopts steel templates and bolt fastening methods, which are easy to disassemble. The steel template itself is easy to use repeatedly, with low consumption and low construction damage rate. It avoids the disadvantages of the common wooden templates on the market. 4. The present invention realizes the template version of rammed earth walls. The strength of steel templates is much greater than that of wooden templates, and it can bear greater compaction stress, providing better support for modern new rammed earth walls. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the structure of the present invention.

[0022] Figure 2 It is a detailed drawing of the steel formwork structure of the present invention.

[0023] Figure 3 It is a detailed view of the limited width steel plate of the present invention.

[0024] Reference numerals in the figure: 1 steel formwork, 2 width-limited steel plate, 3 M20 bolts, 4 raw soil or improved raw soil, 5 bolt reserved hole one, 6 bolt reserved hole two, 7 digital identification of bolt reserved holes. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings: This embodiment is implemented under the technical premise of the present invention and a detailed implementation method is given, but the protection scope of the present invention is not limited to the following embodiments.

[0026] The technical solution of the present invention is mainly composed of a steel template 1, a width-limiting steel plate 2, an M20 bolt 3, raw soil or improved raw soil 4, a first bolt reserved hole 5, a second bolt reserved hole 6, and a digital mark 7.

[0027] like Figure 1 As shown, a rammed earth wall construction steel formwork described in this embodiment is composed of a steel formwork 1, a width-limiting steel plate 2 with digital markings, and M20 bolts 3.

[0028] By assembling the steel formwork 1 horizontally, and then determining the wall thickness according to the size of the width-limited steel plate 2, the steel formwork 1 and the width-limited steel plate 2 are anchored and connected by M20 bolts 3, and a bolt is fastened by perforating holes every 500cm vertically. The steel formwork and the width-limited steel plate are used to enclose a number of rammed earth wall filling grooves, and then raw soil or improved raw soil is filled in the rammed earth wall filling grooves, and then it is compacted layer by layer, the formwork is raised layer by layer, and finally the formwork is uniformly removed. The steel formwork 1 can provide bearing when the raw earth building wall is compacted, and the appropriate specification steel formwork is selected according to the design requirements and stress characteristics.

[0029] like Figure 2 As shown, the steel template 1 is made of 1500x1500cm10cm thick steel plate with 1500 x 150 x25cm steel bars welded at both ends or customized by the manufacturer. Due to different structural force requirements, the size of the steel template can be adjusted according to the actual project needs.

[0030] like Figure 3 As shown, the width-limiting steel plate 2 is a 1500x700cm 10cm thick steel plate, and the short side has two bolt holes 6 reserved at 50cm, which are arranged symmetrically. The bolt holes 6 match the bolt specifications and have a diameter of 24mm. The bolt holes are marked with digital marks 7 marking the bolt hole spacing below. Due to different structural force requirements, the size of the width-limiting steel plate can be adjusted according to the size of the steel template of the actual project.

[0031] The raw soil or improved raw soil 4 is selected in suitable proportions according to design requirements, and compacted after structural load calculation to meet the strength required by the design.

[0032] The bolt reserved hole 1 5 and the bolt reserved hole 2 6 are selected to match the M20 bolt 3, and the recommended round hole diameter is 24 mm. However, in actual engineering, it is not limited to this specification, and square holes, polygonal holes and other specifications can be selected.

[0033] The digital identification 7 of the bolt reserved hole can be uniformly printed by the manufacturer using an electric engraving pen, is symmetrical, and has accurate size. When installed, the numbers are located outside the bolt holes and are clear and easy to identify.

[0034] The steel formwork 1, width-limiting steel plate 2, and M20 bolts 3 must all be treated with anti-corrosion treatment before leaving the factory, and the welding and assembly on site must also be coated with anti-corrosion paint to avoid damage to the steel plates due to corrosion stress during repeated use.

[0035] The specifications of the template and bolts can be adjusted according to the actual project needs, and the template can be supported and compacted at the same time. The process is simple and easy to operate. The raw earth building wall used is not limited to the raw earth filling wall, but also applied to similar rammed earth walls.

[0036] The above are only preferred specific embodiments of the present invention, which are different implementations based on the overall concept, and the protection scope of the present invention is not limited thereto. They are only used to explain the functions and uses of the present invention, but not to limit the present invention. Ordinary technicians in this technical field can make various changes or substitutions within the essential scope of the present invention, which should also fall within the protection scope of the present invention.

Claims

1. A rammed earth wall steel formwork, characterized in that The rammed earth wall template construction template includes two rows of steel templates arranged in parallel along the length direction of the wall, and width-limiting steel plates arranged on both sides of the steel templates along the thickness direction of the wall. The interval between the two rows of steel templates matches the thickness of the rammed earth wall. The width-limiting steel plates are provided with a plurality of bolt through holes and digital identifiers matching the bolt through holes. The two ends of each steel template are respectively connected with the bolt through holes corresponding to the width-limiting steel plates on both sides thereof by bolts. The steel templates are vertically spaced with through-hole fastening bolts. The steel templates and the width-limiting steel plates are enclosed to form a rammed earth wall filling groove. The rammed earth wall filling groove is filled with raw soil or improved raw soil and compacted. The steel template is U-shaped, and its bottom surface is arranged along the length direction of the wall. The two ends are protruded to the same side, and bolt holes arranged along the length direction of the wall are arranged at the protrusions. The protrusions of the two rows of parallel steel templates are both facing outward. The steel templates and the width-limiting steel plates are stacked layer by layer along the height direction of the wall, and the rammed earth wall filling groove enclosed by the steel templates and the width-limiting steel plates are connected as a whole from top to bottom.

2. The rammed earth wall steel formwork according to claim 1, characterized in that: The steel formwork adopts 1500x1500cm10 cm thick steel plate, and 1500 x 150 x 25cm steel bars are welded at both ends of the steel plate, and bolt holes are opened on the steel bars.

3. The rammed earth wall steel formwork according to claim 1, characterized in that: The width-limited steel plate is a 1500x700cm 10cm thick steel plate, and two rows of bolt holes are reserved at intervals of 50cm on its short side. The bolt holes are arranged symmetrically, and corresponding digital identifications are set next to the bolt holes.

4. A rammed earth wall construction method using the rammed earth wall steel formwork as claimed in claim 1, characterized in that The construction method comprises the following steps: A. assembling a plurality of steel templates horizontally to form two rows of parallel steel templates; B. Use the limited width steel plate to determine the wall thickness as needed, fix two rows of steel formwork on both sides of the limited width steel plate, connect the steel formwork and the limited width steel plate with bolts, and set perforated fastening bolts at intervals vertically; C. Use steel formwork and width-limiting steel plates to enclose several rammed earth wall filling grooves, fill the rammed earth wall filling grooves with raw soil or improved raw soil and compact them; D. Raise the formwork layer by layer, fill with raw soil or improved raw soil layer by layer and compact it; E. Finally, remove the molds uniformly.

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