Supporting device for steel column foot outer wrapping concrete and construction method

Abstract

The invention provides a supporting device for steel column foot encased concrete and a construction method, the supporting device is formed by connecting a plurality of groups of standard knot modules, each standard knot module comprises a frame unit and a template, and the frame units are connected with the templates. The construction method comprises the following steps: according to the size of the encased concrete, selecting the standard knot modules with proper length and quantity, and pre-punching on the column foot of the steel column; the standard knot modules are assembled; concrete pouring is conducted; and the standard knot modules are dismantled. The building formwork device has the beneficial effects that the standardized standard section modules are adopted, flexible combination can be achieved according to the specific size of the encased concrete, the construction process is simplified through the modular design, formwork devices of different projects can be interchanged for use, and the universality and flexibility of equipment are improved; the stiffening flat pieces are additionally arranged between the formworks and the frame units, the rigidity and the deformation resistance of the whole structure are enhanced, and the stability in the pouring process and the service life of the device are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a supporting device and a construction method for wrapping concrete around a steel column foot. Background Art

[0002] In industrial buildings, the structural form of warehousing and logistics is mostly a portal steel frame structure. To facilitate loading and unloading of goods, the height difference between the inside and outside of the warehouse is about 1.5 meters, and the height difference between the column foot and the warehouse interior can reach 2 meters. Therefore, the steel column foot needs to be constructed with high formwork and outsourced concrete, and the quality of the outsourced concrete is very important for the service life of the steel column. Traditional construction methods often use wooden formwork for construction. Due to the high formwork height, it is not easy to operate during construction and the formwork reinforcement is difficult; and during the formwork turnover process, the resulting formwork surface is uneven, there are many holes for tension bolts, and the quality is not easy to control. Moreover, the installation and disassembly process of traditional formwork is very time-consuming, especially for high formwork construction. The height of the formwork is large, and workers need to work at high altitude to install and disassemble the formwork piece by piece. The formwork needs to be remade for each construction and cannot be reused, which increases material and time costs. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a support device and a construction method for outsourcing concrete to the base of a steel column, which is particularly suitable for the construction of outsourcing concrete to the base of a steel column of a portal steel frame structure with a high formwork.

[0004] The technical solution adopted by the present invention is: in the first aspect, a support device for wrapping concrete around the base of a steel column is provided, which is formed by connecting a plurality of groups of standard section modules, wherein the standard section modules include a frame unit and a template, and the frame unit is connected to the template.

[0005] Further, the frame unit includes an upper corner piece, a lower corner piece, a left corner piece and a right corner piece, one end of the upper corner piece is connected to one end of the left corner piece, the other end of the upper corner piece is connected to one end of the right corner piece, the other end of the left corner piece is connected to one end of the lower corner piece, and the other end of the right corner piece is connected to the other end of the lower corner piece.

[0006] Furthermore, the frame unit further comprises a stiffening flat piece, and two ends of the stiffening flat piece are respectively connected to the left corner piece and the right corner piece.

[0007] In a second aspect, a construction method for wrapping concrete around a steel column base is provided, comprising:

[0008] According to the size of the outer concrete, select the standard section modules of appropriate length and quantity and pre-drill holes on the column base of the steel column;

[0009] Assembling the standard section modules;

[0010] Carry out concrete pouring;

[0011] The standard section module is removed.

[0012] Furthermore, assembling the standard section module comprises the following steps:

[0013] Install the standard section module on the steel column foot at the bottom punching position on the secondary grouting layer;

[0014] Connecting other standard section modules to form a closed state in the horizontal direction;

[0015] According to the height required for the outer concrete, the standard section modules are repeatedly spliced ​​in the vertical direction of the standard section modules.

[0016] Furthermore, dismantling the standard section module comprises the following steps:

[0017] Dismantle the uppermost standard section module from the column foot;

[0018] Dismantling the standard section modules connected at the corner positions;

[0019] Repeat the above steps to remove all the standard section modules.

[0020] The advantages and positive effects of the present invention are as follows: due to the adoption of the above technical solution, standardized standard section modules are used, which can be flexibly combined according to the specific size of the outsourced concrete. This modular design not only simplifies the construction process, but also enables the formwork devices between different projects to be interchangeable, thereby improving the versatility and flexibility of the equipment; reinforcing flat pieces are added between the formwork and the frame unit to enhance the rigidity and deformation resistance of the entire structure, which not only ensures the stability during the concrete pouring process, but also extends the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of a support device for enclosing concrete at the base of a steel column according to an embodiment of the present invention

[0022] Figure 2 Schematic diagram of the horizontal connection structure of the frame unit according to an embodiment of the present invention

[0023] Figure 3 Schematic diagram of the longitudinal connection structure of the frame unit according to an embodiment of the present invention

[0024] Figure 4 Schematic diagram of the spatial unit structure of an embodiment of the present invention

[0025] Figure 5This is a schematic diagram of a construction method for wrapping concrete around the base of a steel column according to an embodiment of the present invention.

[0026] In the figure:

[0027] 100, frame unit 101, upper corner fitting 102, lower corner fitting

[0028] 103, left corner piece 104, right corner piece 105, stiffening flat piece

[0029] 200. Template DETAILED DESCRIPTION

[0030] The present disclosure is described more fully below with reference to the accompanying drawings, in which exemplary embodiments of the present disclosure are described. The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0031] like Figure 1-3 As shown, the present invention provides a support device for wrapping concrete at the base of a steel column, which is formed by connecting a plurality of groups of standard section modules. The standard section modules include a frame unit 100 and a template 200. The frame unit 100 is connected to the template 200.

[0032] The template 200 is directly connected to the frame unit 100, and its size can be adjusted according to actual needs and is suitable for steel columns of different specifications.

[0033] In one embodiment, the frame unit 100 includes an upper corner piece 101, a lower corner piece 102, a left corner piece 103 and a right corner piece 104, one end of the upper corner piece 101 is connected to one end of the left corner piece 103, the other end of the upper corner piece 101 is connected to one end of the right corner piece 104, the other end of the left corner piece 103 is connected to one end of the lower corner piece 102, and the other end of the right corner piece 104 is connected to the other end of the lower corner piece 102.

[0034] The upper corner fitting 101 and the lower corner fitting 102 are used to fix the formwork 200 and provide direct support in the vertical direction, and the left corner fitting 103 and the right corner fitting 104 are used to fix the formwork 200 and provide direct support in the horizontal direction. Standardized standard section modules are adopted, which can be flexibly combined according to the specific size of the outsourced concrete. This modular design not only simplifies the construction process, but also makes the formwork devices between different projects interchangeable, thereby improving the versatility and flexibility of the equipment. The materials of the upper corner fitting 101, the lower corner fitting 102, the left corner fitting 103 and the right corner fitting 104 include but are not limited to high-strength structural steel and aluminum alloy. The advantage of high-strength structural steel is that it can withstand large loads, is suitable for large-scale construction projects, is easy to manufacture corner fittings of complex shapes, and can enhance the node strength through welding or bolting. The advantage of aluminum alloy is that it is lighter than steel, easier to transport and install, reduces the requirements for lifting equipment, performs well in humid environments, and does not require additional anti-corrosion measures.

[0035] like Figure 4 As shown, in one embodiment, the frame unit 100 further includes a stiffening flat piece 105 , and two ends of the stiffening flat piece 105 are respectively connected to the left corner piece 103 and the right corner piece 104 .

[0036] In order to further enhance the stability of the frame unit 100, a stiffening flat piece 105 is specially designed. The two ends of the stiffening flat piece 105 are firmly connected to the left corner piece 103 and the right corner piece 104, respectively, thereby improving the deformation resistance of the entire frame and ensuring that no displacement or deformation occurs during the concrete pouring process. The stiffening flat piece is added between the formwork and the frame unit to enhance the rigidity and deformation resistance of the entire structure, which not only ensures the stability during the concrete pouring process, but also extends the service life of the device. The material used for the stiffening flat piece includes but is not limited to stainless steel, aluminum alloy, glass fiber reinforced plastic and carbon fiber reinforced plastic. The advantage of glass fiber reinforced plastic and carbon fiber reinforced plastic is that they provide extremely high strength while maintaining very low density. They are ideal choices for electrically sensitive areas, are not corroded by acids, alkalis and salts, and can adapt to a variety of harsh environments.

[0037] like Figure 5 As shown, in order to facilitate the use of a support device for wrapping concrete around a steel column base provided by the present disclosure, the present disclosure also provides a construction method for wrapping concrete around a steel column base, including:

[0038] S100. According to the size of the outer concrete, select the appropriate length and quantity of standard section modules and pre-drill holes on the steel column base;

[0039] According to the design size of the outer concrete, select the appropriate length and quantity of standard section modules. Pre-drill holes on the steel column base to facilitate the subsequent installation of anchor bolts or other fixings. The drilling position should be strictly in accordance with the design drawings to ensure that the hole diameter and depth meet the requirements.

[0040] S200, assembling the standard section modules;

[0041] S300, pouring concrete;

[0042] After completing the assembly of the standard section module, a comprehensive inspection is required to confirm that all parts have been correctly installed and there is no looseness, and to ensure that the gap between the formwork and the steel column is uniform. Start pouring concrete. The pouring method includes but is not limited to layered pouring, and the thickness of each layer is controlled to be about 30cm. This not only avoids excessive pressure caused by pouring too much concrete at one time, but also makes it easier to operate the vibrator to ensure that the concrete is dense and free of bubbles. During each pouring process, use tools such as vibrators to fully compact the concrete and eliminate internal bubbles. The vibration should be evenly distributed to avoid excessive lateral pressure on the formwork. After pouring, the concrete surface should be smoothed and calendered in time to obtain a smooth and flat appearance.

[0043] S400, dismantle the standard section module.

[0044] In one embodiment, assembling the standard section module comprises the following steps:

[0045] S201. Install the standard section module on the steel column foot at the bottom punching position on the secondary grouting layer;

[0046] Install the standard section module to the steel column foot at the bottom drilling position on the secondary grouting layer. Use, but not limited to, positioning bolts, high-strength bolts or anchor bolts to firmly fix the module to the steel column to ensure the stability of the connection point.

[0047] S202, connecting other standard section modules to form a closed state in the horizontal direction;

[0048] According to the predetermined design drawings, connect the other standard section modules in sequence to make the frame unit form a closed state in the horizontal direction. Note that the connection between the components must be tight and reliable to ensure the stability of the entire support system.

[0049] S203, according to the height required for the outer concrete, repeatedly splicing the standard section modules in the vertical direction of the standard section modules.

[0050] According to the required height of the outer concrete, the standard section modules are spliced ​​repeatedly in the vertical direction. Each newly added standard section module should be tightly connected with the standard section module of the lower layer to ensure the continuity and rigidity of the overall structure.

[0051] In one embodiment, dismantling the standard section module includes the following steps:

[0052] S401, dismantle the uppermost standard section module from the column foot;

[0053] When the concrete is completely hardened and meets the design strength requirements, the support device can be gradually removed. First, the uppermost standard section module is removed from the steel column foot, ensuring smooth operation and avoiding damage to the formed concrete.

[0054] S402, removing the standard section modules connected to the corner positions;

[0055] Next, remove the standard section modules connected at the corners. These parts are usually the key nodes of the structure and require extra care during dismantling to prevent unexpected situations.

[0056] S403, repeat the above steps to remove all standard section modules.

[0057] Remove all standard section modules in order from top to bottom. During the disassembly process, care should be taken to protect each component and keep its integrity as much as possible for subsequent reuse.

[0058] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A support device for steel column base wrapped with concrete, characterized in that: It is formed by connecting a plurality of groups of standard section modules, wherein the standard section modules include a frame unit and a template, and the frame unit is connected to the template.

2. The supporting device for steel column base wrapped with concrete according to claim 1, characterized in that: The frame unit includes an upper corner piece, a lower corner piece, a left corner piece and a right corner piece, one end of the upper corner piece is connected to one end of the left corner piece, the other end of the upper corner piece is connected to one end of the right corner piece, the other end of the left corner piece is connected to one end of the lower corner piece, and the other end of the right corner piece is connected to the other end of the lower corner piece.

3. The supporting device for steel column base wrapped with concrete according to claim 2, characterized in that: The frame unit further comprises a stiffening flat piece, two ends of which are respectively connected to the left corner piece and the right corner piece.

4. A construction method for wrapping concrete around the base of a steel column, using the support device for wrapping concrete around the base of a steel column as claimed in claim 1, characterized in that: include: According to the size of the outer concrete, select the standard section modules of appropriate length and quantity and pre-drill holes on the column base of the steel column; Assembling the standard section modules; Carry out concrete pouring; The standard section module is removed.

5. The construction method for outer covering of steel column base with concrete according to claim 4 is characterized in that: Assembling the standard section module comprises the following steps: Install the standard section module on the steel column foot at the bottom punching position on the secondary grouting layer; Connecting other standard section modules to form a closed state in the horizontal direction; According to the height required for the outer concrete, the standard section modules are repeatedly spliced ​​in the vertical direction of the standard section modules.

6. The construction method for outer covering of steel column base with concrete according to claim 4, characterized in that: The dismantling of the standard section module comprises the following steps: Dismantle the uppermost standard section module from the column foot; Dismantling the standard section modules connected at the corner positions; Repeat the above steps to remove all the standard section modules.

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