House full cast-in-place outer wall construction method based on aluminum formwork system

Abstract

The invention discloses a house full cast-in-place outer wall construction method based on an aluminum formwork system. The house full cast-in-place outer wall construction method comprises the following steps that S1, paying off is conducted; s2, reinforcing steel bar installation; s3, node processing, including S31, seam pulling processing; s32, a tongue-and-groove is reserved; s4, extruded sheet filling is conducted, specifically, the steel bar frame is filled with extruded polystyrene boards, the distance between every two adjacent extruded polystyrene boards is 100 mm, and the extruded polystyrene boards are fixed into the steel bar frame through fixers; s5, the aluminum formwork is installed and fixed; s6, concrete pouring; s7, the aluminum formwork is removed; and S8, base layer treatment. The extruded polystyrene board is arranged between the full-cast-in-place outer wall and the structural shear wall, the outer wall and the structural shear wall are integrally poured at the same time, common quality problems such as outer wall cracks or leakage are completely eradicated, meanwhile, the extruded polystyrene board is added into the full-cast-in-place outer wall for filling, and on the basis that the quality is guaranteed, the construction cost is reduced. And the problem of cost increase caused by increase of steel consumption and wall body weight of a traditional full cast-in-place outer wall is solved.

Description

Technical Field

[0001] This invention relates to the field of building construction, and in particular to a method for constructing fully cast-in-place exterior walls of residential buildings based on an aluminum formwork system. Background Technology

[0002] Fully cast-in-place exterior walls refer to exterior wall structures formed entirely by on-site concrete pouring during the construction process. This construction method can fully leverage the advantages of aluminum formwork construction, achieving one-time casting of the exterior wall and fundamentally avoiding quality problems such as cracks and leaks caused by masonry processes.

[0003] The existing technical problem is that although fully cast-in-place exterior walls can effectively overcome many shortcomings of masonry technology, the increased amount of steel reinforcement and the increased self-weight of the wall result in a significant increase in construction costs, which needs to be improved. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a construction method for fully cast-in-place residential exterior walls based on an aluminum formwork system. The technical problem to be solved is that conventional fully cast-in-place exterior walls require more steel reinforcement and have a higher self-weight, resulting in a significant increase in construction costs. Therefore, this invention can compensate for the increased cost of fully cast-in-place exterior walls while ensuring building quality.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a method for constructing a fully cast-in-place exterior wall for residential buildings based on an aluminum formwork system, comprising the following steps: S1, Setting out: Measuring and setting out at the construction location; S2. Reinforcing steel installation: First, adjust the reinforcing bars of the upper wall and column, then make the guide wall bars, and then tie the reinforcing steel bars of the wall to form a reinforcing steel frame. S3, Node Processing, including: S31, Joint treatment: A joint is set at the connection between the cast-in-place exterior wall and the structural shear wall. The joint is made of extruded polystyrene board. The joint is filled at the edge of the cast-in-place exterior wall. After the extruded polystyrene board is filled, it is fixed to the steel frame with a fastener. S32, pre-reserved tongue and groove joint, a tongue and groove joint is reserved at the connection between the fully cast-in-place exterior wall and the lower concrete structure, the tongue and groove joint section is lower on the outside and higher on the inside; S4. Extruded polystyrene board filling: Extruded polystyrene boards are filled into the steel frame. The spacing between two adjacent extruded polystyrene boards is 100mm. The height of the filled extruded polystyrene boards is the same as the wall height. The extruded polystyrene boards are fixed in the steel frame using fasteners. S5. Aluminum formwork installation and fixing: The aluminum formwork is spliced ​​and fixed on both sides of the steel frame; S6. Concrete pouring: Pour concrete into the aluminum formwork and vibrate the concrete. S7. Aluminum formwork removal: Remove the aluminum formwork one by one. S8. Base treatment: Waterproofing and insulation of the exterior walls are carried out.

[0006] In a preferred embodiment, the present invention can be further configured as follows: In step S4, after the extruded polystyrene board is fixed, the pre-embedded positions of the water and electricity pipes and water and electricity boxes are checked according to the drawings, and the pipes and electrical boxes are accurately positioned and holes are made on the extruded polystyrene board. The size of the holes should be slightly larger than the pipes to avoid forcibly inserting them during installation.

[0007] In a preferred embodiment, the present invention can be further configured as follows: in step S6, when the concrete is vibrated, the vibrator is inserted into the gap of the reinforcing steel frame, and the vibrator is strictly prohibited from directly contacting the extruded polystyrene board. Point vibration or indirect vibration is used to spread the vibration wave through the transmission of the reinforcing steel and the concrete to complete the compaction.

[0008] In a preferred embodiment, the present invention may be further configured such that step S8 includes the following steps: S81, first apply at least three coats of waterproof coating to the surface of the exterior wall. Each subsequent coat should be applied after the previous coat has dried and formed a film. The application direction of each coat should be changed alternately. S82, first bond the insulation board to the exterior wall surface, and then use anchor bolts to further fix the edge of the insulation board to the exterior wall surface; S83. One to two days after the insulation board is laid over a large area, apply the finishing mortar to the insulation board. First, use a large trowel to smooth the bottom layer of finishing mortar, then stretch the cut mesh cloth tightly onto the bottom layer of finishing mortar, and then use an iron trowel to press the mesh cloth into the mortar from the center to the perimeter. S84, for the second coat of plastering mortar, first use a large slab to apply it, then use a small slab to press it flat until the flatness requirement is met, and then allow it to cure naturally for at least 3 days. S85 involves applying a flexible, water-resistant putty to the topcoat, followed by the application of decorative paint.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the fixture includes a fixing clamp, a sliding tube, a sliding rod, a fixing plate, and a locking mechanism; the fixing clamp is clamped and fixed at the intersection of the reinforcing steel frame; the sliding tube is horizontally disposed on the fixing clamp; the sliding rod is horizontally slidably connected to the sliding tube; the fixing plate is disposed at the end of the sliding rod and is used to press the surface of the extruded polystyrene board; the fixing plate is provided with a plurality of needles that pierce into the extruded polystyrene board; and the locking mechanism is used to fix the sliding rod.

[0010] In a preferred embodiment, the present invention can be further configured such that the locking mechanism includes a locking block and a locking bar, the locking block is disposed on the outer wall of the sliding rod, the locking bar is disposed on the inner wall of the sliding tube, and the locking block and the locking bar are provided with locking teeth that are inclined in opposite directions and engage with each other.

[0011] In a preferred embodiment, the present invention may be further configured such that the sliding pipe is threadedly connected to the fixing clamp, and the sliding rod is rotatably connected to the fixing plate.

[0012] In a preferred embodiment, the present invention can be further configured such that the fixing clamp includes a clamping plate and four clamping claws, the clamping plate is circularly arranged, and the clamping claws are distributed around the clamping plate and clamp the intersection of the reinforcing steel frame.

[0013] In a preferred embodiment, the present invention may be further configured such that a binding wire is provided at the opening position of the gripper.

[0014] In summary, the present invention has the following beneficial effects: 1. By setting extruded polystyrene boards between the cast-in-place exterior walls and the structural shear walls, and by casting the exterior walls and structural shear walls together, common quality problems such as cracks or leaks in the exterior walls are eliminated. At the same time, by adding extruded polystyrene boards to the cast-in-place exterior walls for filling, the increased cost caused by the increased steel consumption and wall weight of traditional cast-in-place exterior walls can be compensated for while ensuring quality. 2. By installing convenient fasteners on the steel frame and using these fasteners to fix the extruded polystyrene board within the steel frame, the stability of the extruded polystyrene board is increased, preventing displacement of the extruded polystyrene board during concrete pouring and ensuring the structural strength and quality of the exterior wall. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the fully cast-in-place exterior wall and structural shear wall in Example 1; Figure 2 This is a schematic diagram of the aluminum formwork structure for the fully cast-in-place exterior wall in Example 1; Figure 3 This is a schematic diagram of the use state of the fixator in Embodiment 2; Figure 4 This is a schematic diagram of the fixture in Example 2; Figure 5 This is a schematic diagram of the connection relationship of the fixation device in Embodiment 2.

[0016] Reference numerals: 1. Fixing clamp; 11. Clamping plate; 12. Clamping claw; 13. Binding wire; 2. Sliding tube; 3. Sliding rod; 4. Fixing plate; 41. Needle; 5. Locking mechanism; 51. Locking block; 52. Locking bar; 53. Locking tooth. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Example 1: like Figure 1 , Figure 2 As shown, a method for constructing a fully cast-in-place exterior wall for residential buildings based on an aluminum formwork system includes the following steps: S1. Laying out lines: After the upper concrete slab has reached the strength required for human use, arrange for surveyors to lay out the lines. When laying out the lines, control lines for formwork assembly should be laid out according to the thickness of different walls.

[0019] S2. Reinforcing bar installation: First, adjust the reinforcing bars of the upper wall and column. Then, use the reinforcing bars to install the control lines along the wall formwork to make the guide bars. After that, tie the reinforcing bars of the wall to form a reinforcing bar frame.

[0020] S3, Node Processing, including: S31, Joint treatment: A joint is set at the connection between the cast-in-place exterior wall and the structural shear wall. The joint is made of extruded polystyrene board, which is filled at the edge of the cast-in-place exterior wall. After the extruded polystyrene board is filled, it is fixed to the steel frame with a fastener.

[0021] S32, pre-reserved tongue and groove joint, a tongue and groove joint is reserved at the connection between the fully cast-in-place exterior wall and the lower concrete structure. The tongue and groove joint section is lower on the outside and higher on the inside. It is set in the form of a plastic pressure strip reserved in the aluminum alloy formwork. The plastic pressure strip is positioned and fixed according to the pre-reserved tongue and groove joint position in the drawings.

[0022] S4. Extruded polystyrene board filling: Extruded polystyrene boards are filled into the steel frame. The spacing between two adjacent extruded polystyrene boards is 100mm. The height of the filled extruded polystyrene boards is the same as the wall height. The extruded polystyrene boards are fixed to the steel frame using fasteners.

[0023] After the extruded polystyrene (XPS) board is fixed, check the pre-embedded positions of water and electricity pipes and electrical boxes according to the drawings, and accurately position and drill holes in the XPS board. The hole size should be slightly larger than the pipe to avoid forcing it in during installation. When pre-embedding electrical boxes, the pipes should be tied to the reinforcing steel with wire. For electrical boxes protruding from the wall, plastic tape should be used to stick and seal the surface.

[0024] S5. Aluminum alloy formwork installation and fixing: The aluminum formwork is spliced ​​and fixed on both sides of the steel frame.

[0025] S6. Concrete pouring: First, calibrate and adjust the verticality and flatness of the shear wall. After completion, seal the bottom with mortar. Then, pour concrete inside the aluminum formwork. At the same time, the outlet of the discharge pipe should be at least 50mm away from the inner side of the formwork. Measures should be taken to reduce the impact of concrete pouring to ensure that the concrete does not segregate.

[0026] Furthermore, when vibrating the concrete, the vibrator should be inserted into the gaps in the reinforcing steel frame, and direct contact between the vibrator and the extruded polystyrene board is strictly prohibited. Point vibration or indirect vibration should be used, and the vibration waves should be diffused through the steel reinforcement and concrete to achieve compaction. The concrete pouring should be carried out in layers and continuously to prevent cold joints.

[0027] S7. Aluminum Formwork Removal: Remove the aluminum formwork one by one. The removed formwork should be cleaned up in a timely manner. The cleaned formwork should not be piled up against the formwork or supporting components. The removed formwork should be transported to the upper floor through the reserved material transfer holes or floor openings. Loose parts should be transported via stairs to complete the construction of the next floor.

[0028] S8. Base treatment: Waterproofing and insulation of the exterior walls are carried out, including the following steps: S81, first apply at least three coats of waterproof coating to the surface of the exterior wall. Each subsequent coat should be applied after the previous coat has dried and formed a film. The application direction of each coat should be changed alternately.

[0029] S82, first bond the insulation board to the exterior wall surface, then use anchor bolts to further fix the edges of the insulation board to the exterior wall surface.

[0030] S83. One to two days after the insulation board is laid over a large area, apply the finishing mortar to the insulation board. First, use a large trowel to smooth the bottom layer of finishing mortar, then stretch the cut mesh cloth tightly onto the bottom layer of finishing mortar, and then use a trowel to press the mesh cloth into the mortar from the center outwards.

[0031] For S84, the second coat of mortar should first be applied with a large slab, then flattened with a small slab until the required flatness is achieved, and then allowed to cure naturally for at least 3 days.

[0032] S85 involves applying a flexible, water-resistant putty to the topcoat, followed by the application of decorative paint.

[0033] Example 2: like Figure 3 , Figure 4 , Figure 5 As shown, the fixture includes a fixing clamp 1, a sliding tube 2, a sliding rod 3, a fixing plate 4, and a locking mechanism 5.

[0034] like Figure 3 , Figure 4 , Figure 5 As shown, the fixing clamp 1 is fixed at the intersection of the steel frame. The fixing clamp 1 includes a clamping plate 11 and four clamping claws 12. The clamping plate 11 is circular, and the clamping claws 12 are distributed around the clamping plate 11 and clamp the intersection of the steel frame. The opening of the clamping claws 12 is provided with binding wires 13.

[0035] like Figure 3 , Figure 4 , Figure 5 As shown, the sliding tube 2 is horizontally mounted on the clamping plate 11 and threadedly connected to the clamping plate 11. The sliding rod 3 is horizontally slidably connected to the sliding tube 2, and the fixing plate 4 is rotatably mounted on the end of the sliding rod 3 and is used to press the surface of the extruded polystyrene board. The fixing plate 4 is provided with a plurality of needles 41 that pierce into the extruded polystyrene board.

[0036] like Figure 3 , Figure 4 , Figure 5 As shown, the locking mechanism 5 is used to fix the sliding rod 3. The locking mechanism 5 includes a locking block 51 and a locking bar 52. The locking block 51 is disposed on the outer wall of the sliding rod 3, and the locking bar 52 is disposed on the inner wall of the sliding tube 2. The locking block 51 and the locking bar 52 are provided with locking teeth 53 that are inclined in opposite directions and engage with each other.

[0037] When it is necessary to fix the extruded polystyrene board, first place the fixing device between the steel frame and the extruded polystyrene board, then make the clamp 11 fit against the inner side of the intersection of the steel frame, and at the same time make the claw 12 fasten onto the steel frame, so that the fixing clamp 1 tightens the steel frame and achieves the limiting and fixing of the fixing clamp 1. Then tighten the binding wire 13 to complete the installation and fixing of the fixing clamp 1.

[0038] Then, the sliding rod 3 is pushed outward, causing the sliding rod 3 to move the fixing plate 4 closer to the extruded polystyrene board. At the same time, the needles 41 on the fixing plate 4 pierce into the extruded polystyrene board. Simultaneously, during the sliding of the sliding rod 3, the locking block 51 and the locking strip 52 slide relative to each other, and under the action of the inclined locking teeth 53, the sliding tube 2 and the sliding rod 3 are locked together. Then, the sliding tube 2 is rotated to adjust the extension amount, thereby pressing the fixing plate 4 against the surface of the extruded polystyrene board, while the needles 41 are fully inserted into the extruded polystyrene board, achieving the pressing and fixing of the extruded polystyrene board.

[0039] Therefore, by installing convenient fasteners on the steel frame and using these fasteners to fix the extruded polystyrene board within the steel frame, the stability of the extruded polystyrene board is increased, preventing displacement of the extruded polystyrene board during concrete pouring and ensuring the structural strength and quality of the exterior wall.

[0040] In actual construction, before fixing the extruded polystyrene board, short steel bars can be passed through the extruded polystyrene board and tied to the steel frame to achieve the initial positioning of the extruded polystyrene board and ensure stable installation and fixing in the later stage.

[0041] The specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A method for constructing fully cast-in-place exterior walls of residential buildings based on an aluminum formwork system, characterized in that: Includes the following steps: S1, Setting out: Measuring and setting out at the construction location; S2. Reinforcing steel installation: First, adjust the reinforcing bars of the upper wall and column, then make the guide wall bars, and then tie the reinforcing steel bars of the wall to form a reinforcing steel frame. S3, Node Processing, including: S31, Joint treatment: A joint is set at the connection between the cast-in-place exterior wall and the structural shear wall. The joint is made of extruded polystyrene board. The joint is filled at the edge of the cast-in-place exterior wall. After the extruded polystyrene board is filled, it is fixed to the steel frame with a fastener. S32, pre-reserved tongue and groove joint, a tongue and groove joint is reserved at the connection between the fully cast-in-place exterior wall and the lower concrete structure, the tongue and groove joint section is lower on the outside and higher on the inside; S4. Extruded polystyrene board filling: Extruded polystyrene boards are filled into the steel frame. The spacing between two adjacent extruded polystyrene boards is 100mm. The height of the filled extruded polystyrene boards is the same as the wall height. The extruded polystyrene boards are fixed in the steel frame using fasteners. S5. Aluminum formwork installation and fixing: The aluminum formwork is spliced ​​and fixed on both sides of the steel frame; S6. Concrete pouring: Pour concrete into the aluminum formwork and vibrate the concrete. S7. Aluminum formwork removal: Remove the aluminum formwork one by one. S8. Base treatment: Waterproofing and insulation of the exterior walls are carried out.

2. The construction method for fully cast-in-place exterior walls of residential buildings based on an aluminum formwork system according to claim 1, characterized in that: In step S4, after the extruded polystyrene board is fixed, check the pre-embedded positions of water and electricity pipes and water and electricity boxes according to the drawings, and accurately position and drill holes on the extruded polystyrene board. The hole size should be slightly larger than the pipe to avoid forcibly stuffing it during installation.

3. The construction method for fully cast-in-place exterior walls of residential buildings based on an aluminum formwork system according to claim 2, characterized in that: In step S6, when vibrating the concrete, the vibrator is inserted into the gap of the steel frame. It is strictly forbidden for the vibrator to directly contact the extruded polystyrene board. Point vibration or indirect vibration is used to spread the vibration wave through the transmission of steel bars and concrete to complete the compaction.

4. The construction method for a fully cast-in-place exterior wall of a residential building based on an aluminum formwork system according to claim 3, characterized in that: Step S8 includes the following steps: S81, first apply at least three coats of waterproof coating to the surface of the exterior wall. Each subsequent coat should be applied after the previous coat has dried and formed a film. The application direction of each coat should be changed alternately. S82, first bond the insulation board to the exterior wall surface, and then use anchor bolts to further fix the edge of the insulation board to the exterior wall surface; S83. One to two days after the insulation board is laid over a large area, apply the finishing mortar to the insulation board. First, use a large trowel to smooth the bottom layer of finishing mortar, then stretch the cut mesh cloth tightly onto the bottom layer of finishing mortar, and then use an iron trowel to press the mesh cloth into the mortar from the center to the perimeter. S84, for the second coat of plastering mortar, first use a large slab to apply it, then use a small slab to press it flat until the flatness requirement is met, and then allow it to cure naturally for at least 3 days. S85 involves applying a flexible, water-resistant putty to the topcoat, followed by the application of decorative paint.

5. A method for constructing a fully cast-in-place exterior wall for residential buildings based on an aluminum formwork system, as described in claim 1, characterized in that: The fixture includes a fixing clamp (1), a sliding tube (2), a sliding rod (3), a fixing plate (4), and a locking mechanism (5). The fixing clamp (1) is clamped and fixed at the intersection of the steel frame. The sliding tube (2) is horizontally arranged on the fixing clamp (1). The sliding rod (3) is horizontally slidably connected to the sliding tube (2). The fixing plate (4) is arranged at the end of the sliding rod (3) and is used to press the surface of the extruded polystyrene board. The fixing plate (4) is provided with a plurality of needles (41) that pierce into the extruded polystyrene board. The locking mechanism (5) is used to fix the sliding rod (3).

6. A method for constructing a fully cast-in-place exterior wall for residential buildings based on an aluminum formwork system, as described in claim 5, is characterized in that: The locking mechanism (5) includes a locking block (51) and a locking bar (52). The locking block (51) is disposed on the outer wall of the sliding rod (3), and the locking bar (52) is disposed on the inner wall of the sliding tube (2). The locking block (51) and the locking bar (52) are provided with locking teeth (53) that are inclined in opposite directions and interlock with each other.

7. A method for constructing a fully cast-in-place exterior wall for residential buildings based on an aluminum formwork system, as described in claim 6, characterized in that: The sliding tube (2) is threaded to the fixed clamp (1), and the sliding rod (3) is rotatably connected to the fixed plate (4).

8. A method for constructing a fully cast-in-place exterior wall for residential buildings based on an aluminum formwork system, as described in claim 5, characterized in that: The fixing clamp (1) includes a clamping plate (11) and four clamping claws (12). The clamping plate (11) is circular, and the clamping claws (12) are distributed around the clamping plate (11) and clamp the intersection of the steel frame.

9. A method for constructing a fully cast-in-place exterior wall for residential buildings based on an aluminum formwork system, as described in claim 8, characterized in that: The opening of the gripper (12) is provided with binding wire (13).

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