Texture decoration bare concrete construction technology

Abstract

The invention relates to the technical field of textured plain concrete, and specifically discloses a textured decorative plain concrete construction process, comprising the following steps: step 1) constructing a pouring operation instruction document by using BIM technology; step 2) constructing a pouring steel bar frame along a pouring surface according to the pouring operation instruction document, and constructing a plurality of evenly arranged vibrating cages in the pouring steel bar frame according to design requirements, and positioning and setting out stirrups and screw holes on the constructed pouring steel bar frame, and marking them on the pouring surface accordingly; step 3) preparing a wood grain texture template according to the pouring operation instruction document; step 4) hoisting the wood grain texture template; step 5) installing the template; step 6) treating the Zen seam to ensure that the horizontal or vertical Zen seam of the bamboo grain plain concrete is straight, does not leak slurry, and does not seep water; step 7) pouring concrete, and step 8) curing and demoulding, and performing post-curing.

Description

Technical Field

[0001] The invention relates to the technical field of wood grain decoration construction of plain concrete, and in particular to a texture decoration plain concrete construction process. Background Art

[0002] At present, some large public buildings are required to use textured decorative plain concrete as decoration. For example, in the existing public technology, the publication number "CN111706069A" discloses a bamboo-grained plain concrete construction method, which includes the following steps: steel bar binding; making an inner membrane and an outer mold, the outer mold is spliced ​​by a base mold and a bamboo mold; the bamboo mold includes vertical bamboo strips arranged on the base mold along multiple horizontal intervals, each vertical bamboo strip is respectively spliced ​​by multiple bamboo segments along the length direction; the bamboo segment is a partial arc bamboo piece with a large end diameter of D1 and a small end diameter of D2, and the diameter of the connected end of adjacent bamboo pieces of each horizontal bamboo strip is equal; the bamboo segment splicing seams of adjacent vertical bamboo strips are vertically staggered with each other; each bamboo segment is respectively attached and sealed to the inner surface of the base mold through its arc ends, and is nailed to the base mold by two connecting nails arranged in an eight-shaped pattern on the left and right; the inner mold and the outer mold are positioned and installed; concrete pouring; template removal and concrete curing.

[0003] The above technology uses bamboo boards as wood grain texture templates, which have the following defects: First: the bamboo boards have a high amount of bamboo sap inside, which is easy to precipitate when pouring concrete, causing discoloration of the wood grain surface; second: after the template is installed, it is not easy to vibrate. If the vibration range is too large or the operating range of the vibrating rod is too large, it is easy to scratch the bamboo boards and the formed wood grain surface; third: precise positioning is impossible; fourth: the installation of the electrical box requires re-grooving on the wood grain surface, which will cause damage to the wood grain surface. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a texture decorative plain concrete construction process.

[0005] To achieve the above object, the present invention provides a texture decoration plain concrete construction process, comprising the following steps: Step 1) constructing a pouring operation instruction document by using BIM technology, comprising:

[0006] ①: Position and lay out the casting surface, obtain the on-site data of the casting surface, and formulate the on-site data into a on-site data configuration file that can be recognized and read by the BIM software;

[0007] ②: The BIM software loads the field data configuration file, and builds the casting surface model in the BIM software based on the field data configuration file;

[0008] ③: Based on the casting surface model, a wood grain texture template model and a casting steel bar frame model are constructed. The casting steel bar frame model is located between the casting surface model and the wood grain texture template model, and the front of the wood grain texture template model is opposite to the casting surface model;

[0009] ④: construct multiple vibrating cage models for on-site construction vibration in the cast steel frame model, and embed the vibrating cage models in the cast steel frame model;

[0010] ⑤: Construct a screw model for fixing the wood grain texture template model, the cast steel frame model and the casting surface, and build an electrical model for installing various electrical equipment junction boxes, control boxes or panels on the wood grain texture template model based on the wood grain texture template model;

[0011] ⑥: Output the drawings of the constructed wood grain texture template model, casting steel frame model, vibrating cage model, screw model and various electrical models through BIM software, and output various model data accordingly, and make casting operation guidance documents through the output drawings and model data;

[0012] Step 2) According to the pouring operation instruction document, a pouring steel frame is built along the pouring surface, and several evenly arranged vibrating cages are built in the pouring steel frame according to the design requirements, and the stirrups and screw holes are positioned and laid out on the built pouring steel frame, and marked on the pouring surface accordingly;

[0013] Step 3) preparing a wood grain texture template according to the pouring operation instruction document, including: I): making a backing template according to the drawings and model data of the wood grain texture template model in the pouring operation instruction document, installing a plurality of evenly arranged three-section tension screws behind the backing template based on the backing template, and assisting in lengthening and reinforcing the square timber, and at the same time providing hoisting holes on the square timber and adding hoisting steel linings; II): installing the prepared bamboo template texture lining board on the front of the backing template based on the backing template;

[0014] Step 4) Installation of wood grain texture formwork;

[0015] Step 5) Template installation;

[0016] Step 6) Seam treatment to ensure that the horizontal or vertical seams of bamboo-grained clear water concrete are straight, leak-proof and water-free;

[0017] Step 7) concrete pouring, including the following steps: E1): Wet the formwork, the wall column should be wetted with water before pouring, and the bottom non-clear water area should be reserved with overflow holes to facilitate water overflow. Before pouring, 3-5 cm of mortar of the same grade should be poured into the bottom; E2): Concrete pouring: adopt a continuous concrete pouring method and layered pouring. After each layer is poured, the vibrator rod is vibrated from the bottom of the vibrating cage. The vibration points of the concrete vibration should be distributed from the middle to the edge, and the points should be evenly distributed so that the bubbles in the concrete can fully float up and dissipate, so that the concrete can be vibrated evenly and densely;

[0018] Step 8) Curing and demoulding, and subsequent curing.

[0019] In the above, the bamboo mold texture lining board is prepared by the following method:

[0020] A1): Based on the backing template, a paint-free plate is installed on the front of the backing template and the installation points are set;

[0021] A2): Select and trim the bamboo pieces to make bamboo pattern strips that meet the design requirements for use;

[0022] A3): Screw rod layout: According to the requirements of the drawings and model data, based on the backing template, the tension screw rods are laid out longitudinally on the backing template, and positioned by a pull rope or elastic line to obtain the screw rod installation hole of the backing template, and a number of bamboo grain strips are selected for temporary fixation;

[0023] A4): Using the installation points and the temporarily fixed bamboo strips as reference, lay the bamboo strips on the upper part of the paint-free board at the point to make a bamboo template;

[0024] A5): The bamboo template is evenly baked at a temperature of 150-300° C. for three times in a row, and the surface of the bamboo template is slightly yellow, so as to obtain a bamboo template texture lining board;

[0025] A6): Locate and position the screw on the bamboo mold texture lining board, and open a reserved screw hole on the bamboo mold texture lining board;

[0026] A7): After wiping the bamboo pieces clean, use a spray pot to evenly spray the release agent on the bamboo mold texture lining board.

[0027] In the above, step 4) hoisting the wood grain texture template includes the following steps:

[0028] B1): Repair on site before hoisting; B2): The wood grain texture formwork is transported to the site by a tower crane. Flexible slings and special hoisting tools are used during the hoisting process. A traction rope is set on the lower side of the formwork to control the falling amplitude of the formwork. After the formwork is hoisted to the location, it is adjusted vertically in the air. During the hoisting process, plywood is used to protect the bamboo grain surface to prevent it from colliding with the surrounding support frame or steel bars during the falling process and damaging the bamboo grain. After the formwork is hoisted, check whether the joints are consistent.

[0029] In the above, in step B1), the site is repaired before lifting and the following work is completed:

[0030] b1): Conduct survey and layout in advance, and mark the template edge lines, control lines and leveling base points;

[0031] b2): Complete the acceptance of steel bar concealment, formwork, and layout;

[0032] b3): Check the cast surface wall and column reinforcement in both directions, and use full-frame temporary support to ensure that the reinforcement is vertical;

[0033] b4): The root of the wall is roughened and the bottom is leveled with mortar. Before mortar leveling, the structural elevation line is leveled to determine the leveling thickness; the leveling thickness is 15-30mm, the width is 150mm, and the inner side is 20mm. Ensure that the secondary layout, leveling flatness and elevation error are not greater than 1mm;

[0034] b5): Set up full-height supporting scaffolding according to the plan requirements. The distance between the full-height scaffolding and the wall should be controlled at 50cm to reserve space for the formwork hoisting. At the same time, use the full-height scaffolding to align the formwork to ensure the reliability of the reinforcement.

[0035] In the above, in step 5), the template installation includes the following steps:

[0036] C1): After the wood grain texture template is hoisted in place, check the position of the wood grain texture template according to the control line. The wood grain texture template should be hoisted on one side of the wire box first, and then the other side of the wood grain texture template should be hoisted after temporarily adjusting the verticality and positioning, and then the end of the wood grain texture template should be hoisted. After the installation is completed, check the thickness of the steel bar protection layer;

[0037] C2): Glue the wood grain templates between each other, and ensure the verticality of the joints and the intersection when installing the wood grain templates. Glue should be applied at the joints and roots to prevent leakage;

[0038] C3): Screw reinforcement: Screws are used to pass through the reserved screw holes on the bamboo formwork texture lining board and the screw installation holes on the backing formwork, and the wood grain texture formwork is reinforced with tension screws. During reinforcement, the tension screws are stressed and perpendicular to the formwork board surface;

[0039] C4): The inner ribs of the formwork are made of 60×80mm wooden beams with a spacing of 80 to 150mm. The bottom 1m range and the overlapping parts are basically fully covered with square wood;

[0040] C5): Double-limb reinforcement: Walls and columns with a length of ≥1200 are reinforced with double-limb members, with longitudinal and transverse double keels, horizontal keel spacing of 300mm, vertical keel spacing of 600mm, and high-strength screws are used for tensioning and fixing. The double-limb member keel joints should be staggered by 50%;

[0041] C6): Vertical check: After the wall formwork is reinforced, the vertical check should be carried out in time, and the full-height frame and the wall reinforcement system should be aligned with each other every 3 steps and 3 spans;

[0042] C7): Anti-leakage treatment: Use mortar to seal the base of the wall and glue to seal the corners to prevent leakage at the base;

[0043] C8): During the construction of the cast-in-place bamboo formwork for the wall column, the wood grain texture formwork around the wall is installed later. After the installation of the wood grain texture formwork for the wall column is completed, the surrounding top plate formwork is installed as an operating platform;

[0044] C9): When dowels are reserved on bamboo-grain wall, the subsequent connection parts are non-bamboo-grain. Holes are made in advance in the backing ordinary plywood at this part according to the reserved dowel positions. The subsequent dowels are strictly installed according to the hole positions of the template. After the installation is completed, glue is applied between the holes and the steel bars to avoid leakage during the pouring process.

[0045] In the above, in step 6), the Zen seam treatment includes the following processing steps:

[0046] D1) Double-layer auxiliary formwork is used to reserve vertical construction joints. The inner auxiliary formwork should be closely connected with the wood grain texture formwork to ensure that there is no leakage at the construction joint and the lines are straight after demolding;

[0047] D2) Horizontal or vertical joint reinforcement, the formwork reinforcement system cannot be removed, and the screws near the construction joints are tightened and reinforced;

[0048] D3) Add horizontal supports at horizontal and vertical construction joints, and return to the top every two spans;

[0049] D4) Before installing the upper template, the upper edge of the lower template is treated with a 1mm thick double-sided adhesive strip to prevent slurry seepage. The sponge strip is required to be close to the upper edge of the template to ensure flatness and straightness. At the same time, when installing the auxiliary template, avoid horizontal displacement of the double-layer auxiliary template to squeeze the sponge strip, causing damage or falling off of the sponge strip;

[0050] D5) For vertical construction joints, glue is used to prevent slurry seepage before installing adjacent formwork.

[0051] This application has the following beneficial effects:

[0052] 1: When the present application adopts bamboo board as the formwork, the bamboo formwork is evenly baked at a temperature of 150-300°C for three times in a row, and the surface of the bamboo formwork is made slightly yellow. At this time, the bamboo sap is completely leached out, and the wood grain surface will not be contaminated when pouring concrete.

[0053] 2: This application uses BIM modeling to output drawings of casting surface models, wood grain texture template models, casting steel frame models, vibrating cage models, screw models and various electrical models, and outputs various model data accordingly. Casting operation instruction documents are prepared through the output drawings and model data. On the one hand, the wood grain texture template and the installed casting steel frame, vibrating cage and electrical model prepared by the casting operation instruction document have high precision, ensuring the construction quality without secondary construction. On the other hand, with the casting operation instruction document as a guide, multiple uniform vibrating cages are constructed in the casting steel frame. The vibrating cage can effectively limit the vibrating rod to vibrate in the vibrating cage, so it will not cause scratches on the wood grain texture template, and can effectively vibrate the cast concrete, so that the cast concrete is dense and uniform.

[0054] 3: When making the wood grain texture template, corresponding lifting holes are set on the square wood and lifting steel linings are added to facilitate subsequent transportation and lifting.

[0055] 4: In addition to using the pouring operation instruction document as a guide in this application, secondary layout and positioning were performed when making the wood grain texture formwork, pouring the steel frame, and pre-embedding various electrical boxes to ensure that the positioning position is consistent with the instruction document. When hoisting the formwork, positioning and layout were performed once to ensure installation accuracy.

[0056] 5: The production of the casting surface model in this application is guided by the data obtained from on-site positioning and layout. Therefore, various corresponding models can be produced in the BIM model at a 1:1 ratio, which is conducive to maintaining the accuracy of electrical wiring and installation of various electrical boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 is a flow chart of the method of the present invention;

[0058] Figure 2 A flow chart of the method for constructing a pouring operation instruction document by using BIM technology in the present invention;

[0059] Figure 3 This is a schematic diagram of the method of finishing the external corners of the bamboo molded plain concrete wall;

[0060] Figure 4 This is a schematic diagram of the method of finishing the inner corner of the bamboo mold plain concrete wall;

[0061] Figure 5 It is a schematic diagram of the structure of the bamboo texture template;

[0062] Figure 6 This is a schematic diagram of the detailed construction method of pouring horizontal cicada joints in one go;

[0063] Figure 7 This is a schematic diagram of the detailed construction method of the secondary pouring horizontal cicada joint

[0064] Figure 8 This is a schematic diagram of the detailed construction method of pouring horizontal cicada joints in one go.

[0065] Fig. 9 This is a schematic diagram of the detailed construction method of the secondary pouring horizontal cicada joint. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] Reference Figure 1 and Figure 2 The present invention provides a texture decoration plain concrete construction process, comprising the following steps: Step 1) constructing a pouring operation instruction file by using BIM technology, comprising:

[0068] ①: Position and lay out the casting surface, obtain the on-site data of the casting surface, and formulate the on-site data into a on-site data configuration file that can be recognized and read by the BIM software;

[0069] ②: The BIM software loads the field data configuration file, and builds the casting surface model in the BIM software based on the field data configuration file;

[0070] ③: Based on the casting surface model, a wood grain texture template model and a casting steel bar frame model are constructed. The casting steel bar frame model is located between the casting surface model and the wood grain texture template model, and the front of the wood grain texture template model is opposite to the casting surface model;

[0071] ④: construct multiple vibrating cage models for on-site construction vibration in the cast steel frame model, and embed the vibrating cage models in the cast steel frame model;

[0072] ⑤: Construct a screw model for fixing the wood grain texture template model, the cast steel frame model and the casting surface, and build an electrical model for installing various electrical equipment junction boxes, control boxes or panels on the wood grain texture template model based on the wood grain texture template model;

[0073] ⑥: Output the drawings of the constructed wood grain texture template model, casting steel frame model, vibrating cage model, screw model and various electrical models through BIM software, and output various model data accordingly, and make casting operation guidance documents through the output drawings and model data;

[0074] Step 2) According to the pouring operation instruction document, a pouring steel frame is built along the pouring surface, and several evenly arranged vibrating cages are built in the pouring steel frame according to the design requirements, and the stirrups and screw holes are positioned and laid out on the built pouring steel frame, and marked on the pouring surface accordingly;

[0075] Step 3) preparing a wood grain texture template according to the pouring operation instruction document, including: I): making a backing template according to the drawings and model data of the wood grain texture template model in the pouring operation instruction document, installing a plurality of evenly arranged three-section tension screws behind the backing template based on the backing template, and assisting in lengthening and reinforcing the square timber, and at the same time providing hoisting holes on the square timber and adding hoisting steel linings; II): installing the prepared bamboo template texture lining board on the front of the backing template based on the backing template;

[0076] The bamboo mold texture lining board is prepared by the following method:

[0077] A1): Based on the backing template, a paint-free plate is installed on the front of the backing template and the installation points are set;

[0078] A2): Select and trim the bamboo pieces to make bamboo pattern strips that meet the design requirements for use;

[0079] A3): Screw rod layout: According to the requirements of the drawings and model data, based on the backing template, the tension screw rods are laid out longitudinally on the backing template, and positioned by a pull rope or elastic line to obtain the screw rod installation hole of the backing template, and a number of bamboo grain strips are selected for temporary fixation;

[0080] A4): Using the installation points and the temporarily fixed bamboo strips as reference, lay the bamboo strips on the upper part of the paint-free board at the point to make a bamboo template;

[0081] A5): The bamboo template is evenly baked at a temperature of 150-300° C. for three times in a row, and the surface of the bamboo template is slightly yellow, so as to obtain a bamboo template texture lining board;

[0082] A6): Locate and position the screw on the bamboo mold texture lining board, and open a reserved screw hole on the bamboo mold texture lining board;

[0083] A7): After wiping the bamboo pieces clean, use a spray pot to evenly spray the release agent on the bamboo mold texture lining board.

[0084] Step 4) Installation of wood grain texture formwork, including the following steps:

[0085] B1): Before lifting, make repairs on site and complete the following work:

[0086] b1): Conduct survey and layout in advance, and mark the template edge lines, control lines and leveling base points;

[0087] b2): Complete the acceptance of steel bar concealment, formwork, and layout;

[0088] b3): Check the cast surface wall and column reinforcement in both directions, and use full-frame temporary support to ensure that the reinforcement is vertical;

[0089] b4): The root of the wall is roughened and the bottom is leveled with mortar. Before mortar leveling, the structural elevation line is leveled to determine the leveling thickness; the leveling thickness is 15-30mm, the width is 150mm, and the inner side is 20mm. Ensure that the secondary layout, leveling flatness and elevation error are not greater than 1mm;

[0090] b5): Set up full-height supporting scaffolding according to the plan requirements. The distance between the full-height scaffolding and the wall should be controlled at 50cm to reserve space for the formwork hoisting. At the same time, use the full-height scaffolding to align the formwork to ensure the reliability of the reinforcement.

[0091] B2): The wood grain texture formwork is transported to the site by a tower crane. Flexible slings and special lifting tools are used during the lifting process. A traction rope is set on the lower side of the formwork to control the falling amplitude of the formwork. After the formwork is lifted to the location, it is adjusted vertically in the air. During the lifting process, plywood is used to protect the bamboo grain surface to prevent it from colliding with the surrounding support frame or steel bars during the falling process and damaging the bamboo grain. After the formwork is lifted, check whether the joints are consistent.

[0092] Step 5) Template installation: including the following steps:

[0093] C1): After the wood grain texture template is hoisted in place, check the position of the wood grain texture template according to the control line. The wood grain texture template should be hoisted on one side of the wire box first, and then the other side of the wood grain texture template should be hoisted after temporarily adjusting the verticality and positioning, and then the end of the wood grain texture template should be hoisted. After the installation is completed, check the thickness of the steel bar protection layer;

[0094] C2): Glue the wood grain templates between each other, and ensure the verticality of the joints and the intersection when installing the wood grain templates. Glue should be applied at the joints and roots to prevent leakage;

[0095] C3): Screw reinforcement: Screws are used to pass through the reserved screw holes on the bamboo formwork texture lining board and the screw installation holes on the backing formwork, and the wood grain texture formwork is reinforced with tension screws. During reinforcement, the tension screws are stressed and perpendicular to the formwork board surface;

[0096] C4): The inner ribs of the formwork are made of 60×80mm wooden beams with a spacing of 80 to 150mm. The bottom 1m range and the overlapping parts are basically fully covered with square wood;

[0097] C5): Double-limb reinforcement: Walls and columns with a length of ≥1200 are reinforced with double-limb members, with longitudinal and transverse double keels, horizontal keel spacing of 300mm, vertical keel spacing of 600mm, and high-strength screws are used for tensioning and fixing. The double-limb member keel joints should be staggered by 50%;

[0098] C6): Vertical check: After the wall formwork is reinforced, the vertical check should be carried out in time, and the full-height frame and the wall reinforcement system should be aligned with each other every 3 steps and 3 spans;

[0099] C7): Anti-leakage treatment: Use mortar to seal the base of the wall and glue to seal the corners to prevent leakage at the base;

[0100] C8): During the construction of the cast-in-place bamboo formwork for the wall column, the wood grain texture formwork around the wall is installed later. After the installation of the wood grain texture formwork for the wall column is completed, the surrounding top plate formwork is installed as an operating platform;

[0101] C9): When dowels are reserved on bamboo-grain wall, the subsequent connection parts are non-bamboo-grain. Holes are made in advance in the backing ordinary plywood at this part according to the reserved dowel positions. The subsequent dowels are strictly installed according to the hole positions of the template. After the installation is completed, glue is applied between the holes and the steel bars to avoid leakage during the pouring process.

[0102] Step 6) Seam treatment to ensure that the horizontal or vertical seams of bamboo-grained clear water concrete are straight, leak-proof and water-free; seam treatment includes the following processing techniques:

[0103] D1) Double-layer auxiliary formwork is used to reserve vertical construction joints. The inner auxiliary formwork should be closely connected with the wood grain texture formwork to ensure that there is no leakage at the construction joint and the lines are straight after demolding;

[0104] D2) Horizontal or vertical joint reinforcement, the formwork reinforcement system cannot be removed, and the screws near the construction joints are tightened and reinforced;

[0105] D3) Add horizontal supports at horizontal and vertical construction joints, and return to the top every two spans;

[0106] D4) Before installing the upper template, the upper edge of the lower template is treated with a 1mm thick double-sided adhesive strip to prevent slurry seepage. The sponge strip is required to be close to the upper edge of the template to ensure flatness and straightness. At the same time, when installing the auxiliary template, avoid horizontal displacement of the double-layer auxiliary template to squeeze the sponge strip, causing damage or falling off of the sponge strip;

[0107] D5) For vertical construction joints, glue is used to prevent slurry seepage before installing adjacent formwork.

[0108] Step 7) concrete pouring, including the following steps: E1): Wet the formwork, the wall column should be wetted with water before pouring, and the bottom non-clear water area should be reserved with overflow holes to facilitate water overflow. Before pouring, 3-5 cm of mortar of the same grade should be poured into the bottom; E2): Concrete pouring: adopt a continuous concrete pouring method and layered pouring. After each layer is poured, the vibrator rod is vibrated from the bottom of the vibrating cage. The vibration points of the concrete vibration should be distributed from the middle to the edge, and the points should be evenly distributed so that the bubbles in the concrete can fully float up and dissipate, so that the concrete can be vibrated evenly and densely;

[0109] Step 8) Curing and demoulding, and subsequent curing.

[0110] In the above, for the selection of bamboo boards, bamboos with a bamboo age of more than 2 years are used, and the diameter of the big head is not less than 60mm. Bamboo pieces with serious surface scratches are not used. The raw materials are split to form bamboo strips with a width of no more than 40mm (those with a width of less than 30mm are not used), and the length is controlled at about 2m; the bottom and sides of the bamboo strips are trimmed straight, and there must be no tearing strips. The two sides are trimmed visually flat, and cannot be processed into equal length and width; the edge thickness difference of the bamboo white surface is controlled to be no more than 1.5mm, and the arch height difference is not controlled. The bamboo nodes and natural color spots on the surface of the bamboo strips should be retained, and planing and polishing of the bamboo nodes are not allowed. When cutting, transporting, processing and installing bamboo strips, it is advisable to avoid damaging the surface of the bamboo strips. It is also necessary to meet the requirements that the cast-in-place bamboo grain texture is a vertical bamboo grain texture, and the switch panel and bamboo strip splicing position should be based on the principle of integrity. When paving, avoid cutting the bamboo strips at the junction of the wire box and the bamboo strips, and try to maintain the integrity of the bamboo strips.

[0111] The bamboo strips are fixed to the outer wooden board not less than 12mm with an air nail gun, and the nail heads shall not be exposed. The size of the bamboo strips should be taken into consideration, and they should be randomly and densely laid and fixed on the outer formwork. The joint width is required to be ≤1.5mm, and the nail marks should not be visible on the bamboo green surface. The position of the template tension screws should be designed according to the in-depth design, and the spacing should be 600*600mm. Holes can be drilled during the installation stage (adjacent holes should be horizontal, vertical and aligned), regardless of the relationship with the arrangement of bamboo strips. In order to avoid leakage and sanding between bamboo strips, the bamboo strips should be glued, and the glue should be tight and full; in order to avoid bamboo pulp or bamboo frost adsorbed on the concrete surface and affecting the texture of the concrete surface, it is advisable to add a fire baking process, and there should be no obvious pollution after wiping and cleaning. Anti-slurry leakage measures should be taken at the positive and negative corners of the outer formwork.

[0112] Reference Figure 3 to Figure 4 The bamboo formwork concrete wall should be finished with 30mm wide and 10mm thick smooth plain concrete lines at the corners, door openings, and the junction of the wall and the top plate. Figure 3 This is a schematic diagram of the method of finishing the external corners of the bamboo molded plain concrete wall; Figure 4This is a schematic diagram of the method of finishing the inner corner of the bamboo formwork concrete wall. Different textures, such as the intersection of wood grain and bamboo grain, use thick and smooth surface concrete formwork, and the intersection of bamboo grain and top plate uses super-filled nodes.

[0113] Reference Figure 5 The bamboo pattern adopts the piece-by-piece assembly formwork technology. The width of the piece should be 1220mm, and the height is determined according to the wall height. 15 thick formwork + 60*80 square wood laid flat + wooden wedges + glue are used to reinforce the pieces to ensure the tightness of the splicing.

[0114] Reference Figure 6 and Figure 7 , Figure 6 This is a detailed diagram of the construction method of pouring horizontal cicada joints in one go. Figure 7 This is a schematic diagram of the detailed construction method of the secondary pouring horizontal cicada joint. The horizontal construction joint of the bamboo grain wall adopts the cicada joint form. During the reinforcement of the lower wall, the external square wood should be 50% deep into the upper part, 150 to 200 mm above the pouring elevation, and an over-pressure top should be set on the top, which should be removed before the upper formwork is reinforced. When the upper formwork is reinforced, the lower formwork must retain the original reinforcement state, and the upper formwork should be 50% deep into the lower reinforcement system. Anti-leakage measures should be taken between the upper and lower formwork joints (glue or sponge strips), and the upper and lower bamboo grain ends must be densely filled with colloid to reduce the risk of leakage.

[0115] Reference Figure 8 and Fig. 9 The vertical construction joints of bamboo-grain walls should adopt the cicada joint form, and different methods should be used for primary pouring and secondary pouring, such as Figure 8 This is a schematic diagram of the detailed construction method of pouring horizontal cicada joints in one go. Fig. 9 This is a schematic diagram of the detailed construction method of the secondary pouring horizontal cicada joint.

[0116] The installation and construction of the cast steel frame and vibrating cage shall comply with the following requirements:

[0117] 1. Before pouring the concrete of the lower beam and slab, the outer frame line of the upper wall column and the horizontal positioning line of the tension bolts should be determined in advance, and the positioning of the steel bars should be adjusted to avoid conflict with the screws.

[0118] 2. Roughen the bottom of concrete walls and columns in advance and clean them.

[0119] 3. Based on the detailed drawings, work with the detailed team and the clean water team to determine the cutting length and on-site binding elevation to ensure one-time molding.

[0120] 4. Before tying the steel bars, mark the screw holes on the longitudinal bars at the four corners of the frame column and shear wall and on the ground, mark them with chalk and tape, and use wire ropes to control them when necessary. Adjust the steel bars that may affect the screws in advance, and effectively avoid them during the steel bar tying process.

[0121] 5. Check the thickness of the steel bar protective layer according to the construction edge line. When the displaced steel bar is within the section, straighten the steel bar 1:6. When the displaced steel bar is outside the section, chisel down a certain depth of concrete at the displacement of the slab surface, make corrections inside the slab surface, and then fill it with high-strength grouting material for repair.

[0122] 6. Adjust the vertical position of the wall column reinforcement according to the horizontal positioning line of the screw.

[0123] 7. During the steel bar binding process, when the tension screws conflict with the steel bars, the principle of steel bars avoiding tension bolts should be followed. According to the actual situation, when the screws cannot pass through, communication should be made with the deepening department in advance, and the deepening department will issue an adjustment plan and implement it after the process is reviewed.

[0124] 8. The steel bar binding material should be No. 20-22 binding wire; each intersection of the steel bar should be bound, and the binding wire should not be less than two turns, and the buckle and the tail end should face the inside of the component section.

[0125] 9. The frame-column stirrups and main reinforcement, as well as the shear wall horizontal reinforcement and vertical reinforcement should be tied vertically, and all intersections should be tied and fixed firmly.

[0126] 10. During and after the wall and column reinforcement binding process, the verticality should be corrected in two vertical directions to ensure the verticality of the reinforcement after binding, thereby effectively controlling the thickness of the protective layer and reducing the risk of exposed reinforcement.

[0127] 11. The steel bar protection layer pads should be plastic pads with a color close to that of concrete, and the pads should be firmly tied to the horizontal steel bars with wire. The column protection layer plastic card should be laid out 50 to 100 mm on both sides of the column corner, and the middle spacing should be 350×350 mm. The spacing of the wall protection layer plastic cards should be 600×600 mm, and arranged in parallel.

[0128] 12. Use a full-frame frame to build a temporary protective shed and cover it after the steel bars are tied to avoid being washed away by rain.

[0129] 13. For walls and columns that are too high, walls with cross-sectional dimensions less than 150mm, and areas with dense steel bars, cylindrical steel guide cages should be added to ensure that the vibrator rods are lowered normally. In some areas, the vibrator rods should be lowered before mold closing if necessary.

[0130] 14. Wall positioning reinforcement can only be set at the skirting area (non-clear water area), and the ends of the reinforcement should be painted with anti-rust paint.

[0131] 15. The progress of steel bar binding should be synchronized with the progress of formwork processing to avoid rusting of steel bars or the lack of conditions for formwork installation on site after formwork processing is completed.

[0132] 16. When the tied steel bars are rusted, a wire brush should be used to remove the rust.

[0133] During the concrete pouring, a professional concrete vibrator is arranged to perform the vibrating. During the pouring, the layer thickness is controlled, and the material is discharged and vibrated in layers. The thickness of each layer of concrete is strictly controlled within 50cm (marks are made on the vibrating rod for control). When vibrating, pay attention to fast insertion and slow withdrawal, and the time is controlled within 20-30S. The moving spacing of the vibrating rod is required to be no more than 50cm. During the pouring process, a special person is arranged to use a rubber hammer or vibrator for auxiliary vibration outside the mold. In order to combine the upper and lower layers of concrete into a whole, the vibrating rod is required to be inserted into the lower layer of concrete by 5cm-10cm when vibrating the upper layer of concrete. When pouring vertical components with beam-slab joints on the top, a closing strip should be set at the top, and 20mm should be overfilled to ensure that the top concrete elevation is consistent and the wood grain texture is continuous at the secondary joint.

[0134] After pouring, the formwork should be maintained for no less than 7 days. The top should be covered with a clean film / cotton felt as a heat preservation and moisture retention measure. At the same time, a water pipe should be used to water the outside of the formwork for maintenance. The screw should not be removed during the maintenance period. The formwork removal of the same block is required to be completed at one time to avoid color differences caused by different degrees of concrete carbonization. After the casting of the plain concrete floor slab is completed, it should be covered with a film of cotton felt in time and covered with clean cotton felt for maintenance for no less than 3 days. Then the cotton felt film should be removed and the construction and watering maintenance should be carried out normally. In order to minimize the cracks in the top plate, it is strictly forbidden to disturb or concentrate loading during the 3-day maintenance process. If conditions permit, the covering maintenance time should be extended as much as possible. If materials need to be stacked, they should be dispersed and stacked at the junction of walls, columns and beams.

[0135] During demolition, the vertical components should be maintained with the formwork for no less than 7 days when the formwork is removed, and the strength of the horizontal components should reach 100% before removal to prevent poor molding effects due to insufficient maintenance time or insufficient strength. The demolding stage should follow the instructions to avoid damage to the positive and screw holes during the demolding process. Pay special attention to the tie wires in the hollow formwork area and the pre-buried fixed connectors in the installation, which should be removed in advance during demolition. During the removal of the clear water formwork, tools such as crowbars should not directly contact the clear water concrete, and soft materials should be used for support; materials should be cleaned and organized in a timely manner to avoid backlog and damage to the finished products, and the finished products should be protected in time. The demolition of the clear water component formwork in the same block should be completed in one go. After the demolition is completed, the vertical components should be promptly equipped with top covers, positive corner wraps and hard protection at a distance of not less than 2m from the ground. Outdoor components should also be fully covered with tarpaulins and fixed firmly to prevent rainwater from polluting the formed concrete and causing alkali efflux.

[0136] This application has the following beneficial effects:

[0137] 1: When the present application adopts bamboo board as the formwork, the bamboo formwork is evenly baked at a temperature of 150-300°C for three times in a row, and the surface of the bamboo formwork is made slightly yellow. At this time, the bamboo sap is completely leached out, and the wood grain surface will not be contaminated when pouring concrete.

[0138] 2: This application uses BIM modeling to output drawings of casting surface models, wood grain texture template models, casting steel frame models, vibrating cage models, screw models and various electrical models, and outputs various model data accordingly. Casting operation instruction documents are prepared through the output drawings and model data. On the one hand, the wood grain texture template and the installed casting steel frame, vibrating cage and electrical model prepared by the casting operation instruction document have high precision, ensuring the construction quality without secondary construction. On the other hand, with the casting operation instruction document as a guide, multiple uniform vibrating cages are constructed in the casting steel frame. The vibrating cage can effectively limit the vibrating rod to vibrate in the vibrating cage, so it will not cause scratches on the wood grain texture template, and can effectively vibrate the cast concrete, so that the cast concrete is dense and uniform.

[0139] 3: When making the wood grain texture template, corresponding lifting holes are set on the square wood and lifting steel linings are added to facilitate subsequent transportation and lifting.

[0140] 4: In addition to using the pouring operation instruction document as a guide in this application, secondary layout and positioning were performed when making the wood grain texture formwork, pouring the steel frame, and pre-embedding various electrical boxes to ensure that the positioning position is consistent with the instruction document. When hoisting the formwork, positioning and layout were performed once to ensure installation accuracy.

[0141] 5: The production of the casting surface model in this application is guided by the data obtained from on-site positioning and layout. Therefore, various corresponding models can be produced in the BIM model at a 1:1 ratio, which is conducive to maintaining the accuracy of electrical wiring and installation of various electrical boxes.

[0142] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Texture decoration plain concrete construction process, characterized by: The steps include: Step 1) Use BIM technology to build pouring operation instruction documents, including: ①: Position and lay out the casting surface, obtain the on-site data of the casting surface, and formulate the on-site data into a on-site data configuration file that can be recognized and read by the BIM software; ②: The BIM software loads the field data configuration file, and builds the casting surface model in the BIM software based on the field data configuration file; ③: Based on the casting surface model, a wood grain texture template model and a casting steel bar frame model are constructed. The casting steel bar frame model is located between the casting surface model and the wood grain texture template model, and the front of the wood grain texture template model is opposite to the casting surface model; ④: construct multiple vibrating cage models for on-site construction vibration in the cast steel frame model, and embed the vibrating cage models in the cast steel frame model; ⑤: Construct a screw model for fixing the wood grain texture template model, the cast steel frame model and the casting surface, and build an electrical model for installing various electrical equipment junction boxes, control boxes or panels on the wood grain texture template model based on the wood grain texture template model; ⑥: Output the drawings of the constructed wood grain texture template model, casting steel frame model, vibrating cage model, screw model and various electrical models through BIM software, and output various model data accordingly, and make casting operation guidance documents through the output drawings and model data; Step 2) According to the pouring operation instruction document, a pouring steel frame is built along the pouring surface, and several evenly arranged vibrating cages are built in the pouring steel frame according to the design requirements, and the stirrups and screw holes are positioned and laid out on the built pouring steel frame, and marked on the pouring surface accordingly; Step 3) preparing a wood grain texture template according to the pouring operation instruction document, including: I): making a backing template according to the drawings and model data of the wood grain texture template model in the pouring operation instruction document, installing a plurality of evenly arranged three-section tension screws behind the backing template based on the backing template, and assisting in lengthening and reinforcing the square timber, and at the same time providing hoisting holes on the square timber and adding hoisting steel linings; II): installing the prepared bamboo template texture lining board on the front of the backing template based on the backing template; Step 4) Installation of wood grain texture formwork; Step 5) Template installation; Step 6) Seam treatment to ensure that the horizontal or vertical seams of bamboo-grained clear water concrete are straight, leak-proof and water-free; Step 7) concrete pouring, including the following steps: E1): Wet the formwork, the wall column should be wetted with water before pouring, and the bottom non-clear water area should be reserved with overflow holes to facilitate water overflow. Before pouring, 3-5 cm of mortar of the same grade should be poured into the bottom; E2): Concrete pouring: adopt a continuous concrete pouring method and layered pouring. After each layer is poured, the vibrator rod is vibrated from the bottom of the vibrating cage. The vibration points of the concrete vibration should be distributed from the middle to the edge, and the points should be evenly distributed so that the bubbles in the concrete can fully float up and dissipate, so that the concrete can be vibrated evenly and densely; Step 8) Curing and demoulding, and post-curing.

2. The texture decoration plain concrete construction process according to claim 1 is characterized in that: The bamboo mold texture lining board is prepared by the following method: A1): Based on the backing template, a paint-free plate is installed on the front of the backing template and the installation points are set; A2): Select and trim the bamboo pieces to make bamboo pattern strips that meet the design requirements for use; A3): Screw rod layout: According to the requirements of the drawings and model data, based on the backing template, the tension screw rods are laid out longitudinally on the backing template, and positioned by a pull rope or elastic line to obtain the screw rod installation hole of the backing template, and a number of bamboo grain strips are selected for temporary fixation; A4): Using the installation points and the temporarily fixed bamboo strips as reference, lay the bamboo strips on the upper part of the paint-free board at the points to make a bamboo template; A5): The bamboo template is evenly baked at a temperature of 150-300° C. for three times in a row, and the surface of the bamboo template is slightly yellow, so as to obtain a bamboo template texture lining board; A6): Locate and position the screw on the bamboo mold texture lining board, and open a reserved screw hole on the bamboo mold texture lining board; A7): After wiping the bamboo pieces clean, use a spray pot to evenly spray the release agent on the bamboo mold texture lining board.

3. The texture decoration plain concrete construction process according to claim 1 is characterized in that: Step 4) Installation of wood grain texture formwork, including the following steps: B1): Repair on site before hoisting; B2): The wood grain texture formwork is transported to the site by a tower crane. Flexible slings and special hoisting tools are used during the hoisting process. A traction rope is set on the lower side of the formwork to control the falling amplitude of the formwork. After the formwork is hoisted to the location, it is adjusted vertically in the air. During the hoisting process, plywood is used to protect the bamboo grain surface to prevent it from colliding with the surrounding support frame or steel bars during the falling process and damaging the bamboo grain. After the formwork is hoisted, check whether the joints are consistent.

4. The texture decoration plain concrete construction process according to claim 3 is characterized in that: In step B1), the site is repaired before lifting and the following work is completed: b1): Conduct survey and layout in advance, and mark the template edge lines, control lines and leveling base points; b2): Complete the acceptance of steel bar concealment, formwork, and layout; b3): Check the cast surface wall and column reinforcement in both directions, and use full-frame temporary support to ensure that the reinforcement is vertical; b4): The root of the wall is roughened and the bottom is leveled with mortar. Before mortar leveling, the structural elevation line is leveled to determine the leveling thickness; the leveling thickness is 15-30mm, the width is 150mm, and the inner side is 20mm. Ensure that the secondary layout, leveling flatness and elevation error are not greater than 1mm; b5): Set up full-height supporting scaffolding according to the plan requirements. The distance between the full-height scaffolding and the wall should be controlled at 50cm to reserve space for the formwork hoisting. At the same time, use the full-height scaffolding to align the formwork to ensure the reliability of the reinforcement.

5. The texture decoration plain concrete construction process according to claim 1 is characterized in that: In step 5), the template installation includes the following steps: C1): After the wood grain texture template is hoisted in place, check the position of the wood grain texture template according to the control line. The wood grain texture template should be hoisted on one side of the wire box first, and then the other side of the wood grain texture template should be hoisted after temporarily adjusting the verticality and positioning, and then the end of the wood grain texture template should be hoisted. After the installation is completed, check the thickness of the steel bar protection layer; C2): Glue the wood grain templates between each other, and ensure the verticality of the joints and the intersection when installing the wood grain templates. Glue should be applied at the joints and roots to prevent leakage; C3): Screw reinforcement: Screws are used to pass through the reserved screw holes on the bamboo formwork texture lining board and the screw installation holes on the backing formwork, and the wood grain texture formwork is reinforced with tension screws. During reinforcement, the tension screws are stressed and perpendicular to the formwork board surface; C4): The inner ribs of the formwork are made of 60×80mm wooden beams with a spacing of 80 to 150mm. The bottom 1m range and the overlapping parts are basically fully covered with square wood; C5): Double-limb reinforcement: Walls and columns with a length of ≥1200 are reinforced with double-limb members, with longitudinal and transverse double keels, horizontal keel spacing of 300mm, vertical keel spacing of 600mm, and high-strength screws are used for tensioning and fixing. The double-limb member keel joints should be staggered by 50%; C6): Vertical check: After the wall formwork is reinforced, the vertical check should be carried out in time, and the full-height frame and the wall reinforcement system should be aligned with each other every 3 steps and 3 spans; C7): Anti-leakage treatment: Use mortar to seal the base of the wall and glue to seal the corners to prevent leakage at the base; C8): During the construction of the cast-in-place bamboo formwork for the wall column, the wood grain texture formwork around the wall is installed later. After the installation of the wood grain texture formwork for the wall column is completed, the surrounding top plate formwork is installed as an operating platform; C9): When dowels are reserved on bamboo-grain wall, the subsequent connection parts are non-bamboo-grain. Holes are made in advance in the backing ordinary plywood at this part according to the reserved dowel positions. The subsequent dowels are strictly installed according to the hole positions of the template. After the installation is completed, glue is applied between the holes and the steel bars to avoid leakage during the pouring process.

6. The texture decoration plain concrete construction process according to claim 1 is characterized in that: In step 6), the Zen seam treatment includes the following processing steps: D1) Double-layer auxiliary formwork is used to reserve vertical construction joints. The inner auxiliary formwork should be closely connected with the wood grain texture formwork to ensure that there is no leakage at the construction joint and the lines are straight after demolding; D2) Horizontal or vertical joint reinforcement, the formwork reinforcement system cannot be removed, and the screws near the construction joints are tightened and reinforced; D3) Add horizontal supports at horizontal and vertical construction joints, and return to the top every two spans; D4) Before installing the upper template, the upper edge of the lower template is treated with a 1mm thick double-sided adhesive strip to prevent slurry seepage. The sponge strip is required to be close to the upper edge of the template to ensure flatness and straightness. At the same time, when installing the auxiliary template, avoid horizontal displacement of the double-layer auxiliary template to squeeze the sponge strip, causing damage or falling off of the sponge strip; D5) For vertical construction joints, glue is used to prevent slurry seepage before installing adjacent formwork.

Images