Wood grain bare concrete construction method based on BIM technology

Abstract

A wood grain fair-faced concrete construction method based on a BIM technology is characterized by comprising the following steps of a, building, structure and decoration construction drawing fusion and analysis, b, BIM modeling and wood grain template typesetting deepening, c, construction preparation and technical disclosure, and numbering of each template after BIM modeling, d, template processing and manufacturing, e, steel bar binding, template splicing and reinforcing, and release agent brushing. F, fair-faced concrete manufacturing and pouring; g, formwork dismantling and concrete curing; h, screw hole plugging and bolt position using a special plug; and i, final forming surface concrete defect finishing. The wood grain fair-faced concrete construction method based on the BIM technology has the advantages that the forming effect is good, the texture is distinct, the construction period is shortened, the construction efficiency is high, and the concrete texture and color are natural.

Description

Technical Field

[0001] The invention relates to a concrete construction method, in particular to a wood grain plain concrete construction method based on BIM technology. Background Art

[0002] With the continuous development and updating of the construction engineering industry, more and more designers and construction builders are no longer satisfied with the rationality and safety of the structure, but have also burst out with many innovative ideas and substantial demands for the appearance and finishing effects of the building. Wood grain plain concrete is one of the important representatives.

[0003] The traditional construction process of wood grain finish concrete is to pour the concrete under ordinary formwork, and then use special coatings or other decorative materials for secondary processing. This method is not only prone to concrete quality defects such as leakage and honeycomb surface, but also has a single texture, unnatural finishing effect, and cumbersome construction process.

[0004] Therefore, the known wood grain facing plain concrete construction method has the above-mentioned inconveniences and problems. Summary of the invention

[0005] The purpose of the present invention is to propose a wood grain plain concrete construction method based on BIM technology which utilizes the concrete imprint characteristics.

[0006] To achieve the above purpose, the technical solution of the present invention is: A wood grain plain concrete construction method based on BIM technology, characterized by comprising the following steps: a. Integration and analysis of the three drawings of architecture, structure and decoration, sorting out the cross-sectional dimensions, elevations, decorative surface methods and effect design parameters of various components; b. BIM modeling, deepening of wood grain template layout, BIM modeling of wood grain plain concrete wall, planning of template size and position, ensuring the continuity of template texture, and planning of screw eye positions in advance and submitting them to the designer for confirmation to ensure that the final construction effect meets the design requirements; c. Construction preparation and technical disclosure: After BIM modeling, each template is numbered, a special construction team is organized, and animation is made based on the BIM model for disclosure, emphasizing the location and installation order of each template; d. Formwork processing and production: the wood grain formwork adopts 20mm thick pine wood formwork. According to the BIM in-depth confirmation drawings, the formwork is cut into different specifications of 1800×200mm, 1800×100mm, 2100×200mm, 2100×100mm, 1600×200mm, and 1600×100mm. Screw holes are drilled on the surface of the formwork at a spacing of 400mm, and the formwork is numbered and pasted on the back of the formwork according to the construction sequence. After the formwork is cut, an oxygen welding gun is used to carbonize the surface of the wood grain formwork, leaving a carbonized layer on the surface of the formwork; e. Rebar binding, formwork assembly and reinforcement, and mold release agent application. Rebar processing and binding are carried out according to construction drawings and specifications. The wire heads of the steel bar binding should all extend into the wall to prevent the wire heads from touching the wood grain formwork. Before assembling the formwork, a trial installation should be carried out according to the formwork numbering diagram. During assembly, the formwork should be assembled from bottom to top and from left to right in accordance with the BIM briefing content. The supporting surfaces under the pillars and diagonal braces should be flat and solid with sufficient pressure-bearing area. The template joints should be sealed with self-adhesive sponge strips to prevent leakage. Clean before closing the mold, apply the mold release agent, and use a dust-free cloth to dip the mold release agent in an even and orderly manner along the wood grain texture direction for three times. After applying once, wait for 10 minutes for the mold release agent to solidify before the next application operation. f. Production and pouring of plain concrete. White cement is added to the concrete to ensure that the molding effect is similar to white-gray color. Water reducer and air entraining agent are added to the concrete. A φ30 inserted vibrator is used for vibrating. The distance between the vibrator and the template should not be greater than 0.5 times the vibrator's action radius; g. Formwork removal and concrete curing. Remove the pine wood formwork one week after concrete pouring, dismantle the supporting parts and connectors one by one, and tap the top of the formwork to the outside with a wooden hammer or rubber hammer to loosen it. Remove it from the wall without damaging the formwork and concrete. Remove the formwork at least 48 hours after pouring the concrete. Before removing the formwork, sprinkle water on the concrete for curing and quickly wrap it with plastic film. The corner joints should be tight and compacted, and covered with plastic film and do not sprinkle water during curing to prevent alkali reversion. The concrete curing time is not less than 14 days, or appropriately extended depending on the ambient temperature changes; h. The screw holes are sealed with special plugs at the bolt positions. The surface texture of the plugs is consistent with the wall texture. The special plugs are made of plastic and have the same color as concrete. There are wood grains engraved on the outer surface, forming an integral part with the wood grain clear water wall. i. Repair defects in the final formed surface concrete. When defects appear on the concrete surface, use cement mortar with the same cement mix ratio as the original wall to repair the honeycombed surface of the wall to keep the color uniform. For honeycombed surfaces with larger sizes, use wood grain boards to print them, and use wood grain brushes to cover up quality defects in local details.

[0007] The wood grain plain concrete construction method based on BIM technology of the present invention can also be further implemented by adopting the following technical measures.

[0008] The aforementioned method, wherein the analysis is an overlay analysis.

[0009] The aforementioned method, wherein the wood grain template is a pine wood template with a thickness of ≥20 mm.

[0010] In the aforementioned method, the surface of the wood grain template is carbonized using an oxygen welding torch.

[0011] In the above method, the carbonization temperature is controlled at 200° C., and the carbonized wood grain template is matched with the designed modulus to ensure the continuity of the texture.

[0012] In the aforementioned method, the release agent is salad oil release agent.

[0013] In the aforementioned method, the concrete is C30 fine stone concrete, and the black cement and white cement are prepared in a ratio of 3:1.

[0014] After adopting the above technical solution, the wood grain plain concrete construction method based on BIM technology of the present invention has the following advantages: 1. Good molding effect and distinct texture. Use 20mm thick pine wood formwork with clear wood grain texture, and use the printing characteristics of concrete to print the wood grain texture onto the concrete surface, which can better achieve the desired wood grain texture effect; 2. Shorten the construction period and improve the construction efficiency. Carry out BIM modeling for different size effects of wood grain plain concrete design, and give instructions to the on-site labor team to ensure that the construction effect meets the design requirements to the greatest extent and avoid rework as much as possible; 3. The concrete texture and color are natural. The concrete of this project is mixed with black cement and white cement in the ratio of 1:3 in ordinary concrete, so that the final concrete surface is free from the dark appearance of traditional concrete surface and achieves a design effect with natural color. 4. Green, environmentally friendly, low-carbon ecological building. This project is different from the traditional plain concrete construction process. It does not require secondary processing with paint or other decorative materials after the concrete is poured. It uses pine wood formwork to support the formwork and is formed in one step after pouring, reducing the use of toxic and harmful decoration materials and pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a process flow chart of the construction of wood grain plain concrete according to an embodiment of the present invention; Figure 2 This is a wood grain template texture deepening layout diagram according to an embodiment of the present invention. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with embodiments and accompanying drawings.

[0017] Example 1 Please refer to Figure 1-2 The process flow of the wood-grain plain concrete construction method based on BIM technology of the present invention is as follows: three-picture fusion analysis → BIM in-depth design → construction preparation and technical disclosure → formwork processing and production → steel bar binding, formwork assembly and reinforcement, and mold release agent application → plain concrete production and pouring → formwork removal and concrete maintenance → bolt hole sealing → final molding surface concrete defect repair.

[0018] The wood grain fair-faced concrete construction method based on BIM technology of the present invention utilizes the printing characteristics of concrete to achieve the wood grain fair-faced concrete effect.

[0019] The method for constructing wood grain clear concrete based on BIM technology of the present invention comprises the following steps: before construction, BIM modeling is performed on the wall and the template to confirm the design effect, and a BIM construction animation is produced to explain the assembly process to the on-site construction personnel, a 20 mm thick pine template is used as the forming template, and after the template is cut, an oxygen welding gun is used to carbonize the surface of the wood grain template to ensure the final forming effect; one-time forming is performed on-site to avoid secondary finishing construction; and concrete mixed with lime is used to achieve natural color. The present invention is applicable to the construction of various types of wood grain clear concrete.

[0020] The specific operation steps of the wood grain plain concrete construction method based on BIM technology of the present invention are as follows: (1) Three-image fusion analysis Before deepening the design, we conducted overlay analysis based on the architectural, structural, and decoration design drawings, sorted out the design parameters such as the cross-sectional dimensions, elevations, decorative surface methods, and effects of various components, and created the prerequisites for the next step of BIM modeling.

[0021] (2) BIM in-depth design Before construction, BIM modeling was carried out on the wood-grain exposed concrete wall, and the template size and position were planned in advance to ensure the continuity of the template texture. At the same time, the position of each screw hole was planned in advance and submitted to the designer for confirmation to ensure that the final construction effect met the design requirements.

[0022] (3) Construction preparation and technical disclosure After the modeling is completed, each template is numbered, a special construction team is organized, and animation is made based on the BIM model to explain the details, emphasizing the location and installation sequence of each template to avoid damage to the template and unnecessary rework caused by rough construction on site. Construction machinery and related materials, operators, and on-site grass-roots treatment are prepared in advance.

[0023] (4) Template processing and production The wood grain formwork uses a 20mm thick pine wood formwork. The pine wood formwork has clear and beautiful texture, strong elasticity and permeability, good thermal conductivity, simple maintenance, high turnover rate, and pine wood is a common wood and is easy to obtain.

[0024] According to the BIM in-depth confirmation drawings, the templates are cut into different specifications such as 1800×200mm, 1800×100mm, 2100×200mm, 2100×100mm, 1600×200mm, 1600×100mm, etc. At the same time, screw holes are drilled on the surface of the template at a spacing of 400mm, and the templates are numbered according to the construction sequence and pasted on the back of the template.

[0025] After the template is cut, use an oxygen welding torch to carbonize the surface of the wood grain template, so that the wood surface has a very thin carbonized layer. The carbonization temperature should be strictly controlled during the carbonization process, and the temperature should be controlled at 200°C. Too much carbonization will damage the original wood grain texture effect, and a light carbonization will result in unclear texture. At the same time, the original wood residue on the wood is easy to hang on the concrete surface, affecting the final molding effect; after carbonization, the template is processed again to match the design modulus, ensure the continuity of the texture, and avoid dimensional errors caused by carbonization.

[0026] (5) Steel bar binding, formwork assembly and reinforcement, and mold release agent application include the following steps: 1) Steel bar binding Rebar processing and binding are carried out according to the construction drawings and specifications. The design height of the wall is 2.8m. The horizontal and vertical reinforcements are C8@200, and the tension reinforcement is A6@600×600. To ensure that the double-layer reinforcement of the wall is horizontal and vertical, and the spacing is uniform and correct, ladder reinforcement is used for positioning. To ensure the cross-sectional size of the wall, short reinforcement is added to the tension screw rod to make the ends of the short reinforcement flat. After the wall reinforcement is tied, the main reinforcement position of the door and window opening nodes is corrected to ensure the thickness of the protective layer.

[0027] The pads for the steel bar protection layer use finished plastic cards instead of traditional mortar pads, so that the wood grain texture of the concrete is smooth after forming, and prevent the texture effect from being disconnected at the pad position. The spacing of the plastic pads installed on the outer steel bars is 1500mm to ensure the size of the protective layer.

[0028] During the binding process, all the steel bars should have their wire heads extended into the wall to prevent them from touching the wood grain formwork and affecting the final texture forming effect.

[0029] 2) Formwork assembly and reinforcement Before formally installing the template, a trial installation should be carried out according to the template number diagram to check whether the dimensions of each part of the template are appropriate, whether the operating platform frame and rear bracket are suitable, and whether the joints of the template are tight. If any problems are found, repair them in time, and formal installation can only be carried out after the problems are solved.

[0030] Assemble according to the model drawing, and assemble from bottom to top and from left to right according to the BIM content. The supporting surface under the pillars and diagonal braces should be flat and solid, and have sufficient pressure-bearing area.

[0031] All the joints between the templates are sealed with 3-mm thick self-adhesive sponge strips to prevent leakage. Before closing the mold, it must be cleaned and coated with mold release agent. After the template project is installed, it must be inspected and accepted before the next process can be carried out.

[0032] When installing the formwork, care should be taken to ensure that the direction of the formwork joints are parallel to the outer edge of the building.

[0033] 3) Apply release agent The mold release agent of this method is salad oil. When applying, you should first use a dust-free cloth to dip the mold release agent in the direction of the wood grain and apply it evenly and orderly three times. The speed of application should not be too fast to prevent damage to the wood grain effect on the surface of the formwork. After applying once, wait for 10 minutes for the mold release agent to completely solidify before proceeding to the next application operation. After each layer of mold release agent is completely solidified, it can be used for wood grain plain concrete construction.

[0034] (6) Production and pouring of plain concrete In addition to relying on thick pine wood formwork to achieve the texture effect, the concrete mix ratio of wood grain plain concrete also needs to be strictly controlled to achieve the concrete color requirements. The material requirements of wood grain plain concrete are more stringent than those of ordinary concrete. If a normal concrete mix ratio is used, the final color effect of the molded concrete will be slightly black, and it is difficult to perfectly show the texture effect of wood grain plain concrete. Therefore, a specific mix ratio should be used in concrete production. White cement should be added to the concrete at a ratio of 1:3 to ensure that the final molding effect is a white-gray color. At the same time, water reducers and air entraining agents should be added to the concrete to reduce the generation of bubbles on the concrete surface. A φ30 insert vibrator is used instead of a traditional φ50 insert vibrator for vibration to avoid damage to the wood grain formwork and ensure the final texture molding effect. The distance between the vibrator and the formwork should not be greater than 0.5 times the radius of the vibrator. It is strictly forbidden to construct close to the wood grain formwork.

[0035] (7) Formwork removal and concrete curing, including the following steps: 1) Formwork removal The time for removing the formwork should meet the specified requirements. Generally, one week after the concrete pouring is completed, when the concrete strength reaches 100% of the design strength, the special thick pine wood formwork is removed. The supporting parts and connecting parts should be removed piece by piece, and the formwork and concrete should not be damaged during removal. When removing, use a wooden hammer or a hammer with a rubber pad to tap the top of the formwork to the outside to loosen it and separate it from the wall concrete to prevent the formwork from being damaged and affecting its turnover.

[0036] After the special pine wood grain formwork is removed, designated workers should use a brush to clean the surface dust, clean it with a hair dryer, and apply fair water concrete protective agent. The removed formwork should be sorted according to the number for subsequent construction use.

[0037] 2) Concrete curing The plain wood grain concrete wall should be demolded at least 48 hours after pouring concrete. Before demolding the formwork, the concrete should be watered for curing and quickly wrapped with plastic film. The corner joints should be tight and compacted. Try not to sprinkle water during the plastic film and curing process (to prevent alkali return). The concrete curing time is not less than 14 days (it can be appropriately longer depending on the changes in ambient temperature). Straw mats should not be used to cover directly to avoid permanent yellow pollution.

[0038] (8) Bolt hole sealing The bolt position is sealed with a special plug, and the surface texture of the plug is consistent with the wall texture. The special plug is made of plastic, the color is the same as concrete, and there is wood grain engraved on the outer surface, forming a whole with the wood grain clear water wall.

[0039] (9) Repair of concrete defects on the final molding surface When using thick pine boards to construct wood-grained plain concrete walls, local honeycombs and other problems are prone to occur due to inadequate vibration, which affects the molding effect. When defects appear on the concrete surface, cement mortar with the same cement mix ratio as the original wall surface must be used to repair the honeycombs on the wall surface to keep its color uniform. For honeycombs with larger sizes, wood-grain boards are used for printing, and quality defects in local details are covered with wood-grain brushes to ensure the same effect as the natural template generation as much as possible. After the defects are handled, the causes of the concrete defects are analyzed. If it is a problem with the template itself, the template is reprocessed so that it can meet the molding requirements.

[0040] Material requirements for the wood grain plain concrete construction method based on BIM technology of the present invention: Template: Specially made pine wood grain texture template.

[0041] Steel pipe: φ48*3.6 series ordinary steel pipe.

[0042] Tie screw: 16cm long tie screw.

[0043] Wooden beams: 38*88 small wooden beams, 88*88 large wooden beams.

[0044] Rebar: Round 8 steel bars.

[0045] Release agent: used as salad oil release agent.

[0046] Concrete: Special C30 fine stone concrete, black cement and white cement are mixed in a ratio of 3:1.

[0047] Quality control measures of the wood grain plain concrete construction method based on BIM technology of the present invention: After the construction is completed, warning signs should be set up nearby to prevent other workers from leaning against the wall or making marks on the wall, which may damage the wood grain fair-faced concrete surface.

[0048] To prevent sewage from flowing down from the top of the structure and polluting the bare concrete wall itself, a circle of double-sided foam adhesive was wrapped around the top of the structure, and then the film was pasted, and then a row of eagle beaks were smeared with cement mortar on the upper mouth to ensure that the sewage would not pollute the wall. To prevent the formwork or steel pipe from colliding and damaging the column when removing the formwork, plywood was wrapped around the outer edge of the wall and tied firmly with wire.

[0049] After the wood grain formwork is processed, moisture-proof measures need to be taken to avoid sudden situations such as rain, to ensure the flatness and straightness of the formwork, and to prevent deformation.

[0050] The surface of the wood grain formwork needs to be kept clean during the turnover process: clean the dust on the surface immediately after demolding and spray the isolation agent to ensure that the texture is clear when the formwork is used next time.

[0051] During the concrete pouring process, pay close attention to the use of the vibrator and do not touch the wood grain formwork to avoid damaging the wood grain texture of the formwork and affecting the quality of the finished wall.

[0052] After the concrete is demolded, if quality defects such as honeycombed surfaces appear, workers are strictly prohibited from repairing them at will and must be handled by professionals.

[0053] After the concrete surface is formed, a protective agent needs to be applied on the surface to prevent quality problems such as corrosion.

[0054] Safety measures of the wood grain plain concrete construction method based on BIM technology of the present invention: It is necessary to conscientiously implement the guidelines and policies on production safety and fire protection issued by the national, local and higher-level labor protection and production safety authorities, and strictly enforce relevant laws, regulations and provisions.

[0055] When the formwork is carbonized, a flat area should be found outside the site and a cordon should be set up around it. Operators need to work within the cordon and take safety precautions to prevent fire and other injuries.

[0056] Construction workers must carefully inspect their respective construction areas, working environments, equipment and facilities, tools and utensils, and immediately stop work if any hidden dangers are found. Construction can only be carried out after rectification by a dedicated person. Construction workers must consciously wear personal protective equipment at the construction site and during the operation.

[0057] Environmental protection measures of the wood grain plain concrete construction method based on BIM technology of the present invention: Special formworks should be stacked neatly according to the BIM modeling numbers. After the formwork is installed at the construction site, but before pouring concrete, the garbage on site should be cleaned up. All kinds of materials should be stacked according to the general construction plan. The roads and safety protection facilities on site should not be occupied. Planned material feeding should be implemented and materials should be delivered as needed.

[0058] It is strictly prohibited to damage any machinery, equipment, construction slogans, etc. within the construction site.

[0059] After the formwork is dismantled, it should be arranged neatly according to the numbers. All waste and garbage on the site should be cleared out of the site and transported to the garbage dump for stacking.

[0060] Arrange the working time reasonably. Because wood grain concrete has high requirements for vibration and the vibration time is long, try to avoid construction at night to reduce disturbance to others.

[0061] Strengthen the training and responsibility education of operators of concrete pumps and concrete tankers to ensure that concrete pumps and concrete tankers operate smoothly and in a coordinated manner, and prohibit high-speed operation. Require operators of concrete pumps to strengthen the maintenance of concrete pumps, monitor them in a timely manner, and replace concrete pumps that exceed noise limits in a timely manner.

[0062] The present invention has substantial characteristics and significant technological progress. The wood grain fair-faced concrete construction method based on BIM technology of the present invention utilizes the printing characteristics of concrete to achieve the wood grain fair-faced concrete effect. Before construction, BIM modeling is performed on the wall and formwork to confirm the design effect, and a BIM construction animation is produced to explain the assembly and other processes to the on-site construction personnel. A 20 mm thick pine wood formwork is used as the forming formwork. After the formwork is cut, an oxygen welding torch is used to carbonize the surface of the wood grain formwork to ensure the final forming effect; one-time forming is performed on-site to avoid secondary finishing construction; and concrete mixed with lime is used to achieve natural color. The wood grain fair-faced concrete construction method based on BIM technology of the present invention is suitable for all types of wood grain fair-faced concrete construction.

[0063] The wood grain plain concrete construction method based on BIM technology of the present invention is applied in the China Intelligent Backbone Network Jinan Licheng Phase 1 Project, with remarkable effect. The wood grain template is used for one-time forming, which reduces the secondary decoration construction process and has a high template turnover rate. The BIM technology is used to avoid the influence of rework caused by human factors to the greatest extent, reduce the construction difficulty of the labor team, reduce the consumption of manpower and machinery, shorten the construction period and significantly improve the construction quality, form a natural texture effect, have good use effect, and have remarkable economic benefits, thus achieving a relatively objective cost reduction benefit.

[0064] The above embodiments are only for the purpose of illustrating the present invention, but not for limiting the present invention. A person skilled in the art may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A wood grain plain concrete construction method based on BIM technology, characterized in that The following steps are involved: a. Integration and analysis of the three drawings of architecture, structure and decoration, sorting out the cross-sectional dimensions, elevations, decorative surface methods and effect design parameters of various components; b. BIM modeling, deepening of wood grain template layout, BIM modeling of wood grain plain concrete wall, planning of template size and position, ensuring the continuity of template texture, and planning of screw eye positions in advance and submitting them to the designer for confirmation to ensure that the final construction effect meets the design requirements; c. Construction preparation and technical disclosure: After BIM modeling, each template is numbered, a special construction team is organized, and animation is made based on the BIM model for disclosure, emphasizing the location and installation order of each template; d. Formwork processing and production: the wood grain formwork adopts 20mm thick pine wood formwork. According to the BIM in-depth confirmation drawings, the formwork is cut into different specifications of 1800×200mm, 1800×100mm, 2100×200mm, 2100×100mm, 1600×200mm, and 1600×100mm. Screw holes are drilled on the surface of the formwork at a spacing of 400mm, and the formwork is numbered and pasted on the back of the formwork according to the construction sequence. After the formwork is cut, an oxygen welding gun is used to carbonize the surface of the wood grain formwork, leaving a carbonized layer on the surface of the formwork; e. Rebar binding, formwork assembly and reinforcement, and mold release agent application. Rebar processing and binding are carried out according to construction drawings and specifications. The wire heads of the steel bar binding should all extend into the wall to prevent the wire heads from touching the wood grain formwork. Before assembling the formwork, a trial installation should be carried out according to the formwork numbering diagram. During assembly, the formwork should be assembled from bottom to top and from left to right in accordance with the BIM briefing content. The supporting surfaces under the pillars and diagonal braces should be flat and solid with sufficient pressure-bearing area. The template joints should be sealed with self-adhesive sponge strips to prevent leakage. Clean before closing the mold, apply the mold release agent, and use a dust-free cloth to dip the mold release agent in an even and orderly manner along the wood grain texture direction for three times. After applying once, wait for 10 minutes for the mold release agent to solidify before the next application operation. f. Production and pouring of plain concrete. White cement is added to the concrete to ensure that the molding effect is similar to white-gray color. Water reducer and air entraining agent are added to the concrete. A φ30 inserted vibrator is used for vibrating. The distance between the vibrator and the template should not be greater than 0.5 times the vibrator's action radius; g. Formwork removal and concrete curing. Remove the pine wood formwork one week after concrete pouring, dismantle the supporting parts and connectors one by one, and tap the top of the formwork to the outside with a wooden hammer or rubber hammer to loosen it. Remove it from the wall without damaging the formwork and concrete. Remove the formwork at least 48 hours after pouring the concrete. Before removing the formwork, sprinkle water on the concrete for curing and quickly wrap it with plastic film. The corner joints should be tight and compacted, and covered with plastic film and do not sprinkle water during curing to prevent alkali reversion. The concrete curing time is not less than 14 days, or appropriately extended depending on the ambient temperature changes; h. The screw holes are sealed with special plugs at the bolt positions. The surface texture of the plugs is consistent with the wall texture. The special plugs are made of plastic and have the same color as concrete. There are wood grains engraved on the outer surface, forming an integral part with the wood grain clear water wall. i. Repair defects in the final formed surface concrete. When defects appear on the concrete surface, use cement mortar with the same cement mix ratio as the original wall to repair the honeycombed surface of the wall to keep the color uniform. For honeycombed surfaces with larger sizes, use wood grain boards to print them, and use wood grain brushes to cover up quality defects in local details.

2. The method for constructing wood grain plain concrete based on BIM technology as claimed in claim 1, characterized in that: The analysis is an overlay analysis.

3. The method for constructing wood grain plain concrete based on BIM technology as claimed in claim 1, characterized in that: The wood grain template is a pine wood template with a thickness of ≥20 mm.

4. The method for constructing wood grain plain concrete based on BIM technology as claimed in claim 1, characterized in that: The surface of the wood grain template is carbonized by using an oxygen welding torch.

5. The method for constructing wood grain plain concrete based on BIM technology as claimed in claim 4, characterized in that: The carbonization temperature is controlled at 200° C., and the carbonized wood grain template is matched with the designed modulus to ensure the continuity of the texture.

6. The method for constructing wood grain plain concrete based on BIM technology as claimed in claim 1, characterized in that: The release agent is salad oil.

7. The method for constructing wood grain plain concrete based on BIM technology as claimed in claim 2, characterized in that: The concrete is C30 fine stone concrete, and black cement and white cement are mixed in a ratio of 3:1.

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