A structure for cold storage steel structure column bottom heat preservation and cold bridge breaking

Abstract

The utility model provides a structure for cold storage steel structure column bottom heat preservation and broken cold bridge, relate to cold storage heat preservation technical field, including steel structure column, concrete base, C type steel keel, polyurethane sandwich board, the concrete base establishes at steel structure column bottom, C type steel keel is fixed to steel structure column four around and opens mouth upward, the utility model discloses above the concrete base of high structure ground or ground completion surface, sprays polyurethane heat preservation layer, can cover concrete base completely, completely blocks the path of steel structure column to pass through base to outside transmission cold quantity, the four around crevice of polyurethane sandwich board and ground extruded sheet heat preservation layer link, filled polyurethane heat preservation layer broken cold bridge, and with surrounding extruded sheet heat preservation layer close combination, effectively insulates the direct contact of metal component and outside environment, completely solves the cold bridge problem that traditional package mode cannot prevent, satisfies the heat preservation demand of cold storage long -term stable under low temperature environment.

Description

Technical Field

[0001] This utility model relates to the field of cold storage insulation technology, and in particular to a structure for insulation of the bottom of steel structure columns and thermal break bridges in cold storage. Background Technology

[0002] In modern cold chain logistics facilities, steel structure cold storage is widely used due to its advantages of short construction cycle and high space utilization. Currently, it is common for the concrete base of the steel columns in cold storage to be higher than the ground level, requiring high insulation against cold bridges. Conventional methods for insulating the column base typically involve wrapping the steel structure column with a single insulation material or directly spraying a polyurethane insulation layer onto the concrete base surface. These methods rely on a single material or simple construction, offering limited effectiveness in preventing cold bridges at the connection between the steel structure column and the ground, and are insufficient to meet long-term insulation requirements in low-temperature environments. The main defects of the existing technology are as follows: incomplete cold bridge blocking: heat conduction paths are easily formed at the connection between the steel structure column and the concrete base, and traditional wrapping methods cannot effectively isolate the metal components from direct contact with the external environment; insufficient construction convenience: single spraying or pasting processes have high requirements for the flatness of the base layer, and gaps are easily formed at the material splicing points, leading to the failure of the insulation layer; lack of structural stability: there is a lack of mechanical fixing measures for the insulation layer, and the insulation layer is prone to fall off due to temperature difference deformation during long-term use, affecting the service life of the cold storage. Therefore, this utility model proposes a structure for insulation of the bottom of steel structure columns and cold bridge breaking in cold storage to solve the problems existing in the prior art. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a structure for insulation and thermal bridging of steel column bases in cold storage. This structure involves spraying a polyurethane insulation layer onto a concrete base above the structural floor or finished floor surface, completely covering the concrete base and effectively blocking the path of cold energy transfer from the steel column to the outside through the base. The gaps around the polyurethane sandwich panel where it connects to the extruded polystyrene insulation layer on the ground are filled with the polyurethane insulation layer to break the thermal bridging, and it is tightly bonded to the surrounding extruded polystyrene insulation layer, effectively isolating the metal components from direct contact with the external environment. This completely solves the thermal bridging problem that traditional wrapping methods cannot eliminate, meeting the long-term stable insulation requirements of cold storage in low-temperature environments.

[0004] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a structure for insulation and thermal break of the bottom of steel structure columns in cold storage, comprising a steel structure column, a concrete base, C-shaped steel keel, and polyurethane sandwich panels, wherein the concrete base is provided at the bottom of the steel structure column; the C-shaped steel keel is fixed around the steel structure column and opens upward; The polyurethane sandwich panel is set around the steel structure column and the concrete base and fixed to the C-shaped steel keel. The bottom outer side of the polyurethane sandwich panel is fixed to the ground and the polyurethane sandwich panel is connected to the extruded polystyrene insulation layer on the ground. A polyurethane insulation layer is sprayed on the concrete base.

[0005] A further improvement is that the steel structure column is a frame column inside the cold storage, and the concrete base is higher than the structural ground or the finished ground surface.

[0006] A further improvement is that the C-shaped steel keel is fixedly installed around the steel structure column by bolts or welding.

[0007] A further improvement is that the polyurethane sandwich panel is evenly wrapped around the steel structure column and the concrete base, and is evenly fixed to the C-shaped steel keel by mushroom-head nylon bolts.

[0008] A further improvement is that the polyurethane insulation layer above the concrete base is sprayed before the last polyurethane sandwich panel is sealed, and the spraying height of the polyurethane insulation layer is not less than 500mm.

[0009] A further improvement is that an angle steel plate is provided at the outer edge of the bottom of the polyurethane sandwich panel, and the outer edge of the bottom of the polyurethane sandwich panel is fixed to the ground by the angle steel plate.

[0010] A further improvement is that the gaps around the connection between the polyurethane sandwich panel and the extruded polystyrene insulation layer are filled with polyurethane insulation layer thermal break bridges, and the polyurethane insulation layer thermal break bridges are tightly bonded to the surrounding extruded polystyrene insulation layer.

[0011] The beneficial effects of this utility model are as follows: 1. This utility model involves spraying a polyurethane insulation layer onto a concrete base that is higher than the structural ground or the finished ground surface. This layer can completely cover the concrete base and completely block the path for the steel structural column to transfer cold energy to the outside through the base. The gaps around the polyurethane sandwich panel where it connects to the extruded polystyrene insulation layer on the ground are filled with polyurethane insulation layer to break the cold bridge. It is also tightly bonded to the surrounding extruded polystyrene insulation layer, effectively isolating the metal components from direct contact with the external environment. This completely solves the cold bridge problem that traditional wrapping methods cannot eliminate and meets the long-term stable insulation requirements of cold storage in low-temperature environments.

[0012] 2. This utility model of polyurethane sandwich panels can be quickly fixed to the C-shaped steel keel around the steel structure column using mushroom-head nylon bolts, eliminating the need for complex on-site cutting and splicing processes and reducing reliance on the flatness of the base layer. The polyurethane insulation layer above the concrete base only needs to be sprayed before the last polyurethane sandwich panel is sealed, avoiding the overlapping and waiting of multiple processes in traditional methods, reducing the probability of gaps at material splicing points, improving construction efficiency, and reducing the construction risk and later maintenance costs of insulation layer failure due to gaps.

[0013] 3. This utility model uses C-shaped steel keels, which are bolted or welded tightly to the steel structure columns, providing a stable installation foundation for the polyurethane sandwich panels. The polyurethane sandwich panels are evenly fixed to the C-shaped steel keels using mushroom-head nylon bolts, ensuring a tight fit between the panels and the keels and preventing displacement. Furthermore, the bottom outer side of the polyurethane sandwich panels is fixed to the ground with angle steel plates, further enhancing the panels' resistance to deformation. These multiple mechanical fixing measures effectively resist the impact of temperature difference deformation on the insulation layer, preventing insulation layer detachment and significantly extending the service life of the cold storage. Attached Figure Description

[0014] Figure 1 This is the front view of the present invention.

[0015] The components include: 1. Steel structure columns; 2. Concrete base; 3. C-shaped steel keel; 4. Polyurethane sandwich panels; 5. Extruded polystyrene insulation layer; 6. Polyurethane insulation layer; 7. Mushroom-head nylon bolts; 8. Angle steel plates; 9. Polyurethane insulation layer thermal break bridge. Detailed Implementation

[0016] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0017] Example 1 according to Figure 1 As shown, this embodiment proposes a structure for insulation and thermal break of cold storage steel column bases, including a steel column 1, a concrete base 2, C-shaped steel keels 3, and polyurethane sandwich panels 4. The concrete base 2 is located at the bottom of the steel column 1; the C-shaped steel keels 3 are fixed around the steel column 1 with their openings facing upwards; the connection between the concrete base 2 and the bottom of the steel column 1 provides stable support for the steel column 1 while preventing the steel column 1 from directly contacting the ground, reducing the path of cold energy conduction through the ground; the upward-facing opening of the C-shaped steel keels 3 facilitates the subsequent installation and positioning of the polyurethane sandwich panels 4, reducing the difficulty of construction and improving installation accuracy. The polyurethane sandwich panel 4 is installed around the steel structure column 1 and the concrete base 2, and is fixed to the C-shaped steel keel 3. The bottom outer side of the polyurethane sandwich panel 4 is fixed to the ground, and the polyurethane sandwich panel 4 is connected to the extruded polystyrene insulation layer 5 on the ground. A polyurethane insulation layer 6 is sprayed on top of the concrete base 2. The polyurethane sandwich panel 4 is installed around the core component and fixed to the C-shaped steel keel 3 to form a closed insulation space, which can effectively block external heat from entering the cold storage and maintain the low temperature environment of the cold storage. The polyurethane sandwich panel 4 is connected to the extruded polystyrene insulation layer 5 to achieve a seamless connection between the column base insulation and the ground insulation, avoiding cold bridges at the connection point and improving the overall insulation effect.

[0018] The steel structure column 1 serves as the frame column inside the cold storage, and the concrete base 2 extends above the structural ground level or the finished ground surface. As a frame column, the steel structure column 1 provides reliable support for the overall structure of the cold storage, ensuring structural safety during its use. The design of the concrete base 2 extending above the ground facilitates the application of a polyurethane insulation layer 6, while also reducing ground moisture erosion and extending the base's service life.

[0019] The C-shaped steel keel 3 is fixedly installed around the steel structure column 1 by bolts or welding. The bolted or welded connection ensures that the C-shaped steel keel 3 is firmly connected to the steel structure column 1, avoiding loosening of the keel due to temperature difference deformation during long-term use; the close fit between the C-shaped steel keel 3 and the steel structure column 1 reduces the gap between them, reduces the risk of cold energy transfer through the gap, and helps to improve the effect of thermal bridging.

[0020] The polyurethane sandwich panel 4 is evenly surrounding the steel structure column 1 and the concrete base 2, and is evenly fixed to the C-shaped steel keel 3 by mushroom-head nylon bolts 7. The even distribution of the mushroom-head nylon bolts 7 ensures that the polyurethane sandwich panel 4 is subjected to balanced force, avoiding excessive local stress that could lead to deformation or damage. The nylon bolts have a low thermal conductivity, which reduces the occurrence of cold bridges at the bolt locations. At the same time, the bolts are easy to install, which can improve the construction efficiency of the polyurethane sandwich panel 4.

[0021] The polyurethane insulation layer 6 above the concrete base 2 is sprayed before the last polyurethane sandwich panel 4 is sealed. Pre-spraying the polyurethane insulation layer 6 ensures complete coverage of the concrete base 2, preventing incomplete coverage due to subsequent sealing of the sandwich panel. This construction sequence eliminates the need to wait for all sandwich panels to be installed, allowing for overlapping processes, shortening the overall construction cycle, and accelerating the construction progress of the cold storage facility.

[0022] Example 2 according to Figure 1As shown, this embodiment proposes a structure for insulation and thermal break of cold storage steel column bases, including a steel column 1, a concrete base 2, C-shaped steel keels 3, and polyurethane sandwich panels 4. The concrete base 2 is located at the bottom of the steel column 1; the C-shaped steel keels 3 are fixed around the steel column 1 with their openings facing upwards; the connection between the concrete base 2 and the bottom of the steel column 1 provides stable support for the steel column 1 while preventing the steel column 1 from directly contacting the ground, reducing the path of cold energy conduction through the ground; the upward-facing opening of the C-shaped steel keels 3 facilitates the subsequent installation and positioning of the polyurethane sandwich panels 4, reducing the difficulty of construction and improving installation accuracy. The polyurethane sandwich panel 4 is installed around the steel structure column 1 and the concrete base 2, and is fixed to the C-shaped steel keel 3. The bottom outer side of the polyurethane sandwich panel 4 is fixed to the ground, and the polyurethane sandwich panel 4 is connected to the extruded polystyrene insulation layer 5 on the ground. A polyurethane insulation layer 6 is sprayed on top of the concrete base 2. The polyurethane sandwich panel 4 is installed around the core component and fixed to the C-shaped steel keel 3 to form a closed insulation space, which can effectively block external heat from entering the cold storage and maintain the low temperature environment of the cold storage. The polyurethane sandwich panel 4 is connected to the extruded polystyrene insulation layer 5 to achieve a seamless connection between the column base insulation and the ground insulation, avoiding cold bridges at the connection point and improving the overall insulation effect.

[0023] An angle steel plate 8 is provided at the outer edge of the bottom of the polyurethane sandwich panel 4, and the outer edge of the bottom of the polyurethane sandwich panel 4 is fixed to the ground by the angle steel plate 8. The angle steel plate 8 can enhance the stability of the connection between the bottom of the polyurethane sandwich panel 4 and the ground, and prevent the sandwich panel from warping due to shrinkage and deformation caused by the temperature difference between the inside and outside of the cold storage; the angle steel plate 8 protects the bottom edge of the sandwich panel, avoiding damage to the edge from collisions during construction or use, and extending the service life of the sandwich panel.

[0024] The gaps around the junction of the polyurethane sandwich panel 4 and the extruded polystyrene insulation layer 5 are filled with polyurethane insulation thermal break bridges 9, and the polyurethane insulation thermal break bridges 9 are tightly bonded to the surrounding extruded polystyrene insulation layer 5. The polyurethane insulation thermal break bridges 9 fill the gaps, completely sealing the voids at the junction and preventing cold air leakage, thus ensuring the insulation performance of the cold storage. The tight bond between the thermal break bridges 9 and the extruded polystyrene insulation layer 5 forms a unified insulation system, improving the resistance to external interference in this area and reducing the impact of environmental changes on the insulation effect.

[0025] The structure used for insulation and thermal break of steel column bases in cold storage is a polyurethane insulation layer 6 sprayed on a concrete base 2 that is higher than the structural ground or the finished ground surface. This layer completely covers the concrete base 2, effectively blocking the path of cold energy transfer from the steel column 1 to the outside through the base. The gaps around the polyurethane sandwich panel 4 where it connects to the extruded polystyrene insulation layer 5 are filled with polyurethane insulation thermal break 9, and are tightly bonded to the surrounding extruded polystyrene insulation layer 5. This effectively isolates the metal components from direct contact with the external environment, completely solving the thermal bridging problem that traditional wrapping methods cannot eliminate, and meeting the long-term stable insulation requirements of cold storage in low-temperature environments. Furthermore, the polyurethane sandwich panel 4 can be quickly fixed to the C-shaped steel keel 3 around the steel structure column 1 using mushroom-head nylon bolts 7, eliminating the need for complex on-site cutting and splicing processes and reducing reliance on the flatness of the base layer. The polyurethane insulation layer 6 above the concrete base 2 only needs to be sprayed before the last polyurethane sandwich panel 4 is sealed, avoiding the overlapping and waiting of multiple processes in traditional methods, reducing the probability of gaps at material splices, improving construction efficiency, and reducing the construction risk and later maintenance costs of insulation layer failure due to gaps. At the same time, the C-shaped steel keel 3 is fixed tightly to the steel structure column 1 by bolts or welding, providing a stable installation foundation for the polyurethane sandwich panel 4. The polyurethane sandwich panel 4 is evenly fixed to the C-shaped steel keel 3 using mushroom-head nylon bolts 7, ensuring that the sandwich panel and the keel are tightly fitted and not easily displaced. In addition, the bottom outer side of the polyurethane sandwich panel 4 is fixed to the ground by angle steel plates 8, further enhancing the deformation resistance of the sandwich panel. Multiple mechanical fixing measures effectively resist the impact of temperature difference deformation on the insulation layer, avoid the problem of insulation layer falling off, and significantly extend the service life of the cold storage.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A structure for insulation and thermal break of steel column base in cold storage, comprising a steel column (1), a concrete base (2), C-shaped steel keel (3), and polyurethane sandwich panel (4), characterized in that: The concrete base (2) is located at the bottom of the steel structure column (1); the C-shaped steel keel (3) is fixed around the steel structure column (1) and opens upward; The polyurethane sandwich panel (4) is set around the steel structure column (1) and the concrete base (2) and fixed to the C-shaped steel keel (3). The bottom outer side of the polyurethane sandwich panel (4) is fixed to the ground, and the polyurethane sandwich panel (4) is connected to the extruded board insulation layer (5) on the ground. A polyurethane insulation layer (6) is sprayed on the concrete base (2).

2. The structure for insulation of the base of steel columns and thermal break bridge in cold storage as described in claim 1, characterized in that: The steel structure column (1) is the frame column inside the cold storage, and the concrete base (2) is higher than the structural ground or the finished ground surface.

3. The structure for insulation and thermal break of steel column base in cold storage as described in claim 1, characterized in that: The C-shaped steel keel (3) is fixedly installed around the steel structure column (1) by bolts or welding.

4. The structure for insulation of the base of steel columns and thermal break bridge in cold storage as described in claim 1, characterized in that: The polyurethane sandwich panel (4) is evenly surrounding the steel structure column (1) and the concrete base (2), and is evenly fixed to the C-shaped steel keel (3) by mushroom-head nylon bolts (7).

5. A structure for insulation and thermal break of steel column bases in cold storage as described in claim 1, characterized in that: The polyurethane insulation layer (6) above the concrete base (2) is sprayed before the last polyurethane sandwich panel (4) is sealed, and the spraying height of the polyurethane insulation layer (6) is not less than 500mm.

6. A structure for insulation of the base of steel columns in cold storage and for thermal break bridges, as described in claim 1, characterized in that: An angle steel plate (8) is provided at the outer edge of the bottom of the polyurethane sandwich panel (4), and the outer edge of the bottom of the polyurethane sandwich panel (4) is fixed to the ground by the angle steel plate (8).

7. A structure for insulation and thermal break at the base of steel columns in cold storage, as described in claim 1, characterized in that: The gaps around the connection between the polyurethane sandwich panel (4) and the extruded polystyrene insulation layer (5) are filled with polyurethane insulation layer thermal break bridges (9), and the polyurethane insulation layer thermal break bridges (9) are tightly bonded to the surrounding extruded polystyrene insulation layer (5).

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