Ground concrete construction method

Abstract

The invention relates to the technical field of engineering construction, in particular to a ground concrete construction method which comprises the following steps: cleaning a base layer; ground paying-off is conducted to divide the ground into a plurality of ground warehouse blocks, and partition construction joints are reserved between the ground warehouse blocks; ground galling treatment is conducted; l-shaped fixing pieces are symmetrically arranged at the partition construction joints, and joint plates are placed between the L-shaped fixing pieces; reinforcing steel bars are bound, a plurality of protection layer cushion blocks are arranged on the lower portions of the reinforcing steel bars, and dotting is conducted in each ground bin block; concrete is transported to each ground bin block for concrete pouring and vibrating, and grouting and leveling are conducted on the concrete in the adjacent ground bin blocks at the top of the seam plate through a grouting device; secondary calendaring and surface finishing are carried out, the seam plate is taken out after concrete is finally set, watering maintenance is carried out, geotechnical cloth is laid for moisturizing, and the maintenance time is not less than 14 days; and after maintenance is completed, surface layer construction and joint filling are conducted. The method has the effects of improving the ground concrete construction efficiency and effectively controlling ground cracks.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, and in particular to a ground concrete construction method. Background Art

[0002] In large-scale ground concrete construction such as industrial plants, warehouses, and parking lots, the flatness, density, and crack resistance of concrete directly affect the use effect and life of the ground. Traditional ground concrete construction methods usually adopt a one-time large-area pouring or skip-bin pouring method. Among them, the one-time large-area pouring method has high construction efficiency and short construction period, but it is easy to cause a large number of cracks due to concrete shrinkage and temperature stress. Although skip-bin pouring can reduce cracks, the control of the size of each bin block, the control of the pouring interval time of adjacent bin blocks, temperature monitoring, and construction joint treatment all increase the construction difficulty and cost. If the bin division and cutting time are inappropriate, it will also cause a large number of cracks. Therefore, how to design a ground concrete construction method that can ensure the flatness and density of the ground, effectively control cracks, improve the ground concrete construction efficiency and shorten the construction period is a problem that enterprise technicians urgently need to solve. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present application provides a ground concrete construction method.

[0004] The above invention objectives of the present application are achieved through the following technical solutions: A ground concrete construction method comprises the following steps: Clean the base to ensure there is no debris or water accumulation; The ground is laid out according to the distance between the columns to divide it into several ground blocks, and partition construction joints are left between adjacent ground blocks; Roughen the floor, especially at the partition construction joints; L-shaped fixing plates are symmetrically arranged at the partition construction joints along the length direction of the partition construction joints and fixed firmly by nailing. Seam plates are placed between the L-shaped fixing plates to separate the ground storage blocks; Tie the steel bars, arrange and set several protective layer pads under the steel bars to control the thickness of the steel bar protective layer, and make points in each ground bin block to control the pouring thickness; Transport concrete to each ground bin, pour and vibrate concrete in the area of ​​the ground bin, use a grouting machine to grout and level the concrete in the adjacent ground bin at the top of the seam plate, so that the concrete is flush with the top elevation of the seam plate, and the top elevation of the seam plate is the floor elevation; Carry out secondary calendering and finishing, take out the joint plate after the concrete has finally set, carry out watering and curing, lay geotextile to keep moisture, and the curing time shall not be less than 14 days; After maintenance is completed, surface construction and caulking are carried out.

[0005] By adopting the above technical scheme, during ground construction, the ground bin blocks and partitioned construction joints formed by ground layout combined with L-shaped fixing pieces and seam plates can achieve completely separated compartment pouring, reduce concrete shrinkage and temperature stress, prevent cracks, and roughen the ground to enhance the bonding force between concrete and the base layer. The L-shaped fixing pieces are used to fix the seam plates to ensure the accurate position of the seam plates. The seam plates separate the ground bin blocks, and after the steel bar binding and concrete pouring are completed, the grouting process of the concrete in the ground bin blocks on both sides is performed directly on the top of the seam plates through the grouting device, so that the ground elevations between the ground bin blocks remain the same, which plays a role in accurately controlling the pouring thickness and ground elevation, and can ensure the flatness and density of the ground, as well as the completion of After the second calendering and finishing, the seam plate can be taken out and reused, which reduces the construction cost and facilitates the subsequent surface construction and grouting process to ensure the waterproofness, durability and aesthetics of the partitioned construction joints. Compared with the traditional one-time large-area pouring and skip-bin pouring construction methods, this method can not only realize one-time multi-bin pouring at the same time, improve the efficiency of ground concrete construction and shorten the construction period, but also realize completely isolated compartment pouring, avoid concrete cracking due to problems such as concrete shrinkage and temperature stress or due to inappropriate compartment division and inappropriate cutting time, and effectively control cracks. In addition, by setting a seam plate that can be taken out and reused repeatedly, there is no need to cut the seams after pouring, saving secondary construction costs and ensuring the integrity of the partitioned construction joints.

[0006] In a preferred example, the present application can be further configured as follows: circular layout is performed around each column, and each circular layout area is divided into four column perimeter storage blocks, and partition construction joints are left between the column perimeter storage blocks and the ground storage blocks.

[0007] By adopting the above technical solution, by laying out a circle around the column and dividing the construction into four column perimeter blocks, the deformation of the concrete around the column can be effectively controlled to avoid ground cracking or arching due to stress concentration.

[0008] In a preferred example, the present application can be further configured as follows: after the steel bars are tied, the steel bars are fixed to the protective layer pads by spot welding;.

[0009] By adopting the above technical solution, the displacement of the steel bars can be avoided and the accurate position of the steel bars can be ensured.

[0010] In a preferred example, the present application can be further configured as follows: during ditch construction, angle steels are set at the edge of the ditch according to the design dimensions of the ditch, the angle steels are welded and fixed firmly, and partition construction joints are left within 2m outside the angle steels so that the top elevation of the angle steels is lower than the top elevation of the seam plate, so that a slope is formed within 2m outside the angle steels, and a grouting machine is used to press the concrete into shape after pouring.

[0011] By adopting the above technical solution, angle steel is welded and fixed at the edge of the ditch without recycling, so that the concrete and the angle steel can form a stable structural system together during the subsequent pouring. By leaving partitioned construction joints within 2m, the concentration of concrete shrinkage stress can be avoided and cracks can be prevented. At the same time, the top elevation of the angle steel is lower than the top elevation of the seam plate, so that a slope is formed within 2m outside the angle steel, which is suitable for ditch construction conditions.

[0012] In a preferred example, the present application can be further configured as follows: the specific steps of marking include: Prepare several elevation concrete blocks according to the pouring thickness. After the steel bars are tied, evenly distribute the elevation concrete blocks on the steel mesh.

[0013] By adopting the above technical solution, construction workers can avoid excessive thickness of local concrete blocks when pouring concrete, thereby improving the pouring quality.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. This method can not only realize the simultaneous pouring of multiple compartments at one time, improve the efficiency of ground concrete construction and shorten the construction period, but also realize the pouring of completely separated compartments, avoid concrete cracking due to problems such as concrete shrinkage and temperature stress or due to inappropriate compartment division and inappropriate cutting time, effectively control cracks, and by setting a seam plate that can be repeatedly taken out and used, there is no need to cut the seam after pouring, saving the secondary construction cost and ensuring the integrity of the partition construction joint.

[0015] 2. By laying out circular lines around the columns and dividing the construction into four column perimeter blocks, the deformation of the concrete around the columns can be effectively controlled to avoid cracking or arching of the ground due to stress concentration.

[0016] 3. Angle steel is welded and fixed at the edge of the ditch without recycling. During the subsequent pouring, the concrete and angle steel can form a stable structural system together. By leaving partitioned construction joints within 2m, the stress concentration of concrete shrinkage can be avoided and cracks can be prevented. At the same time, the top elevation of the angle steel is lower than the top elevation of the seam plate, so that a slope is formed within 2m outside the angle steel, which is suitable for ditch construction conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a plan view of on-site construction when the ground concrete construction method in this application is used; Figure 2 is another plan view of on-site construction when the ground concrete construction method of the present application is used; Figure 3 yes Figure 2A partial enlarged schematic diagram of part A; Figure 4 yes Figure 2 A partial enlarged schematic diagram of part B; Figure 5 It is a schematic diagram of the structure of the L-shaped fixing plate in this application.

[0018] Figure numerals: 1. Pillar; 2. Ground storage block; 3. Partition construction joint; 4. L-shaped fixing plate; 5. Seam plate; 6. Elevation concrete block; 7. Steel mesh; 8. Grouting machine; 9. Geotextile; 10. Column perimeter storage block; 11. Angle steel; 12. Ditch. DETAILED DESCRIPTION

[0019] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0020] It should be noted that the terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure.

[0021] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0022] Please refer to the following Figure 1 To Attachment Figure 5 A ground concrete construction method of the present application is described.

[0023] like Figures 1 to 4 As shown, the ground concrete construction method includes the following steps: Clean the base to ensure there is no debris or water accumulation; The ground is laid out according to the spacing between the columns 1 to divide the ground into a number of ground blocks 2, and partition construction joints 3 are left between adjacent ground blocks 2; Roughen the ground, especially at the partition construction joint 3; L-shaped fixing plates 4 are symmetrically arranged at the partition construction joints 3 along the length direction of the partition construction joints 3 and are firmly fixed by nailing. Seam plates 5 are placed between the L-shaped fixing plates 4 to separate the ground storage blocks 2. Tie the steel bars, arrange several protective layer pads under the steel bars to control the thickness of the steel bar protective layer, and make points in each ground bin block 2 to control the pouring thickness; Specifically, in this embodiment, the specific steps of marking include: preparing a number of elevation concrete blocks 6 according to the pouring thickness, and after the steel bars are tied, evenly distributing the elevation concrete blocks 6 on the steel mesh 7. When pouring concrete, the construction workers can avoid local excessive pouring by observing the elevation concrete blocks 6 to improve the pouring quality.

[0024] Then, the concrete is transported to each ground bin block 2, and the concrete is poured and vibrated in the area of ​​the ground bin block 2. The concrete in the adjacent ground bin block 2 is grouted and leveled by a grouting machine 8 at the top of the seam plate 5, so that the concrete is flush with the top elevation of the seam plate 5, and the top elevation of the seam plate 5 is the floor elevation; Perform secondary calendering and finishing, take out the joint plate 5 after the concrete is finally set, carry out watering and curing, lay geotextile 9 to keep moisture, and the curing time is not less than 14 days; After maintenance is completed, surface construction and caulking are carried out.

[0025] During ground construction, the ground bin blocks 2 and partitioned construction joints 3 formed by ground layout combined with L-shaped fixing pieces 4 and seam plates 5 can achieve completely separated compartment pouring, reduce concrete shrinkage and temperature stress, prevent cracks, and roughen the ground to enhance the bonding force between concrete and the base layer. The L-shaped fixing pieces 4 are used to fix the seam plates 5 to ensure that the seam plates 5 are accurately positioned. The seam plates 5 separate each ground bin block 2, and after the steel bar binding and concrete pouring are completed, the grouting process of the concrete in the ground bin blocks 2 on both sides is performed directly on the top of the seam plates 5 through the grouting device 8, so that the ground elevations between the ground bin blocks 2 remain the same, which plays a role in accurately controlling the pouring thickness and the ground elevation, and can ensure the flatness and density of the ground, as well as the completion of the second After the first calendering and finishing, the seam plate 5 can be taken out and reused, which reduces the construction cost and facilitates the subsequent surface construction and caulking process to ensure the waterproofness, durability and aesthetics of the partitioned construction joint 3. Compared with the traditional one-time large-area pouring and skip-bin pouring construction methods, this method can not only realize one-time multi-bin pouring at the same time, improve the efficiency of ground concrete construction and shorten the construction period, but also realize completely isolated bin pouring, avoid concrete cracking due to problems such as concrete shrinkage and temperature stress or due to inappropriate bin division, inappropriate cutting time, etc., and effectively control cracks. In addition, by setting a seam plate 5 that can be taken out and reused repeatedly, there is no need to cut the seam after pouring, saving the secondary construction cost and ensuring the integrity of the partitioned construction joint 3.

[0026] Preferably, while the ground is being laid out, circular laying is performed around each column 1, and each circular laying area is divided into four column storage blocks 10, and partition construction joints 3 are left between the column storage blocks 10 and the ground storage blocks 2, so that the ground storage blocks 2 and the column storage blocks 10 are not connected to each other. By laying out the circular lines around the column 1 separately and dividing it into four column storage blocks 10 for construction, the deformation of the concrete around the column 1 can be effectively controlled to avoid ground cracking or arching due to stress concentration.

[0027] Preferably, after the steel bars are tied, they are fixed to the protective layer pads by spot welding to avoid displacement of the steel bars and ensure accurate positioning of the steel bars.

[0028] In addition, if Figure 2 and Figure 4 As shown, when constructing the ditch 12, according to the design size of the ditch 12, an angle steel 11 is set at the edge of the ditch 12, the angle steel 11 is welded and fixed firmly, and a partition construction joint 3 is reserved within 2m outside the angle steel 11, so that the top elevation of the angle steel 11 is lower than the top elevation of the seam plate 5, so that a slope is formed within 2m outside the angle steel 11, and the grouting machine 8 is used for grouting after the concrete is poured. By welding and fixing the angle steel 11 at the edge of the ditch 12, there is no need to recycle it. During the subsequent pouring, the concrete and the angle steel 11 can form a stable structural system together. By leaving a partition construction joint 3 within 2m, the shrinkage stress concentration of the concrete can be avoided and cracks can be prevented. At the same time, the top elevation of the angle steel 11 is lower than the top elevation of the seam plate 5, so that a slope is formed within 2m outside the angle steel 11, which is suitable for the working conditions of the ditch 12 construction.

[0029] The method of the present invention can realize simultaneous pouring of multiple compartments at one time, and can also realize pouring of completely separated compartments, avoiding concrete cracking due to problems such as concrete shrinkage and temperature stress or due to inappropriate compartment division, inappropriate cutting time, etc., and by providing a seam plate 5 that can be repeatedly taken out and reused, there is no need to cut the seams after pouring, saving secondary construction costs and ensuring the integrity of the partitioned construction joints 3.

[0030] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A ground concrete construction method, characterized in that: The following steps are involved: Clean the base to ensure there is no debris or water accumulation; The ground is laid out according to the spacing between the columns (1) to divide the ground into a plurality of ground bins (2), and partition construction joints (3) are left between adjacent ground bins (2); Roughen the floor, especially at the partition construction joints (3); L-shaped fixing plates (4) are symmetrically arranged at the partition construction joints (3) along the length direction of the partition construction joints (3) and are firmly fixed by nailing, and seam plates (5) are placed between the L-shaped fixing plates (4) to separate the ground storage blocks (2); The steel bars are tied, a number of protective layer pads are arranged under the steel bars to control the thickness of the steel bar protective layer, and points are made in each ground bin block (2) to control the pouring thickness; Concrete is transported to each ground bin block (2), concrete is poured and vibrated in the area of ​​the ground bin block (2), and a grouting device (8) is used to grout and level the concrete in the adjacent ground bin block (2) at the top of the seam plate (5) so that the concrete is flush with the elevation of the top of the seam plate (5), and the elevation of the top of the seam plate (5) is the floor elevation; Perform secondary calendering and finishing, remove the joint plate (5) after the concrete has finally set, perform watering and curing, lay geotextile (9) to keep it moist, and the curing time shall be no less than 14 days; After maintenance is completed, surface construction and caulking are carried out.

2. A ground concrete construction method as claimed in claim 1, characterized in that: While the ground layout is being performed, a circular layout is performed around each column (1), and each circular layout area is divided into four column perimeter storage blocks (10), and a partition construction joint (3) is left between the column perimeter storage block (10) and the ground storage block (2).

3. A ground concrete construction method as claimed in claim 1, characterized in that: After the steel bars are tied, they are fixed to the protective layer pads by spot welding to avoid displacement of the steel bars and ensure the accurate position of the steel bars.

4. A ground concrete construction method as claimed in claim 1, characterized in that: When constructing the ditch (12), angle steel (11) is arranged at the edge of the ditch (12) according to the design size of the ditch (12), the angle steel (11) is welded and fixed firmly, and a partition construction joint (3) is left within 2m outside the angle steel (11), so that the top elevation of the angle steel (11) is lower than the top elevation of the joint plate (5), so that a slope is formed within 2m outside the angle steel (11), and a grouting device (8) is used to press grouting after concrete pouring.

5. A ground concrete construction method as claimed in claim 1, characterized in that: The specific steps of dotting include: preparing a number of elevation concrete blocks (6) according to the pouring thickness, and after the reinforcement is tied, evenly distributing the elevation concrete blocks (6) on the reinforcement mesh (7).

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