Plant heat-bridge wall structure and construction method thereof

Abstract

This invention discloses a thermally broken wall structure for factory buildings and its construction method, relating to the field of factory building construction technology. It aims to solve the problem of thermal bridging in frame-structured factory buildings due to the high thermal conductivity of structural components such as columns and ring beams. The key technical points are: it includes columns, ring beams, external wall panels, and an internal insulation layer. The outer surfaces of the columns and ring beams are located on the inner surfaces of the external wall panels. The external wall panels and columns are connected by thermally broken connecting components, forming an insulation space between the outer surfaces of the columns and ring beams and the inner surfaces of the external wall panels. This invention avoids direct heat conduction from metal components by ensuring that the column connectors and wall panel connectors do not contact each other, transferring loads only through low-thermal-conductivity, high-strength insulating pressure blocks. Simultaneously, a closed air-tight cover blocks air convection heat transfer within the gap, ensuring reliable anchorage of the external wall panels under wind loads and their own weight, while reducing the thermal bridging effect at the connection nodes.

Description

Technical Field

[0001] This invention relates to the field of factory building construction technology, and more specifically, to a thermal break bridge wall structure for factory buildings and its construction method. Background Technology

[0002] With the continuous improvement of building energy efficiency standards and the in-depth promotion of dual-carbon goals, the energy-saving design of the building envelope of industrial buildings is receiving increasing attention. Industrial plants are typically characterized by large size, high ceilings, and complex internal thermal environments. Their exterior walls, roofs, and window systems generally suffer from problems such as high heat transfer coefficients, significant thermal bridging effects, and insufficient airtightness. In particular, under the alternating effects of winter heating and summer cooling, the increased heat loss and cooling load of the building envelope directly lead to a surge in building operating energy consumption.

[0003] Thermal bridges refer to dense heat transfer areas formed by materials or structural components with high thermal conductivity in building envelopes. In frame-structured industrial plants, structural components such as columns and ring beams are usually made of reinforced concrete or steel, whose thermal conductivity is much higher than that of the infill wall materials, making them weak links in heat transfer.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a thermal bridge insulation wall structure for factory buildings and its construction method, which has the advantage of being able to block the thermal bridge effect between frame structures.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a thermal break bridge wall structure for a factory building, comprising a support column, a ring beam, an outer wall panel and an inner insulation layer, wherein the outer sides of the support column and the ring beam are located on the inner side of the outer wall panel, and the outer wall panel and the support column are connected by a thermal break bridge connecting component, so that a thermal insulation space is formed between the outer sides of the support column and the ring beam and the inner side of the outer wall panel. The outer side of the support column is wrapped with a column insulation shell, and the outer side of the ring beam is wrapped with a beam insulation shell. The insulated space is filled with a filling insulation layer, which fills the gap between the outer surface of the column insulation shell and the beam insulation shell and the inner surface of the outer wall panel. The filling insulation layer and the inner insulation layer continuously overlap at the sides of the column and the ring beam, thereby forming a continuous insulation covering the entire exposed surface of the column and the ring beam. The thermal break bridge connection assembly includes a column connector fixed to the outside of the column, a panel connector embedded in the inside of the exterior wall panel, and a thermal insulation pressure block sandwiched between the two. The column connector and the panel connector do not contact each other and the pressure is transmitted only through the thermal insulation pressure block.

[0007] The present invention is further configured such that: the heat-insulating pressure block is made of fiber-reinforced resin-based composite material with a thermal conductivity of not more than 0.3 W / (m·K), and the projected area of ​​the heat-insulating pressure block in the direction perpendicular to the wall is greater than the projected area of ​​the column connector and the hanging plate connector.

[0008] The present invention is further configured such that: a plurality of annular grooves are provided on the heat-insulating pressure-bearing block along its length direction; a connecting ring is sleeved on the outer side of the heat-insulating pressure-bearing block; and the heat-insulating pressure-bearing block and the inner wall of the connecting ring are interference-fitted.

[0009] The present invention is further configured such that: the outer side of the support column is wrapped with a column insulation shell, the outer side of the ring beam is wrapped with a beam insulation shell, the column insulation shell and the beam insulation shell overlap each other at the intersection node of the support column and the ring beam, and both the column insulation shell and the beam insulation shell include an inner insulation core board and an outer protective covering layer, and the two are composite together.

[0010] The present invention is further configured such that: the protective covering layer is wrapped around the outer surface of the insulation core board, and the edge of the protective covering layer extends and is anchored to the side wall of the support column or ring beam.

[0011] The present invention is further configured such that: a thermally insulating sealant strip is embedded in the splicing gap at the joint between the column insulation shell and the beam insulation shell, and the thermal conductivity of the thermally insulating sealant strip is not higher than that of the insulation core board.

[0012] The present invention is further configured such that: a closed air-tight cover is provided at the axial gap between the column connector and the hanging plate connector, one end of the closed air-tight cover is sealed to the outer periphery of the column connector and the other end is sealed to the outer periphery of the hanging plate connector, and the heat-insulating pressure block is housed in the closed air-tight cover.

[0013] The present invention is further configured such that: a plurality of support nets for supporting the insulation layer are provided between the exterior wall panel and the support column.

[0014] A construction method for a thermally broken wall structure in a factory building, comprising the following steps: S1: Install column insulation shells and beam insulation shells on the outside of the columns and ring beams, so that the column insulation shells and beam insulation shells overlap at the intersection nodes to form an insulation wrapping layer covering the exposed surfaces of the columns and ring beams. S2: Fix the column connector of the thermal break bridge connection assembly to the outside of the column, and pre-embed the hanging plate connector in the inside of the external wall hanging plate; S3: The thermal insulation pressure block is sandwiched between the column connector and the panel connector, so that the column connector and the panel connector do not contact each other and the pressure is transmitted only through the thermal insulation pressure block, thus completing the thermal break bridge connection between the external wall panel and the column. S4: Fill the insulation space between the exterior wall panel and the columns and ring beams with a filling insulation layer, so that the filling insulation layer and the inner insulation layer continuously overlap at the sides of the columns and ring beams, forming a continuous insulation covering all exposed surfaces of the columns and ring beams.

[0015] In summary, the present invention has the following beneficial effects: By continuously overlapping and staggering the column insulation shell, beam insulation shell, filling insulation layer and inner insulation layer in three-dimensional space, the column, ring beam and node area are completely wrapped, thereby blocking the thermal bridge channel formed by exposed steel or concrete components in traditional structures, reducing their heat transfer coefficient and effectively reducing the exchange of heat between indoors and outdoors. To address the problem of thermal bridges forming weak points at the connection points between exterior wall cladding and the main structure, a structure is developed that prevents column connectors and cladding connectors from contacting each other, transferring loads only through low-thermal-conductivity, high-strength insulating pressure blocks. This avoids direct heat conduction from metal components and, in conjunction with a sealed air hood, blocks air convection heat transfer within the gaps. This ensures reliable anchorage of the exterior wall cladding under wind loads and its own weight, while also reducing the thermal bridge effect at the connection points. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a factory building thermal break wall structure in some embodiments of this specification; Figure 2 This is a cross-sectional view of a thermal bridge wall structure in a factory building, as described in some embodiments of this specification. Figure 1 ; Figure 3 This is a cross-sectional view of a thermal bridge wall structure in a factory building, as described in some embodiments of this specification. Figure 2 ; Figure 4 This is a cross-sectional view of a thermal bridge wall structure in a factory building, as described in some embodiments of this specification. Figure 3 ; Figure 5 for Figure 4 Enlarged view of point A in the image.

[0017] In the diagram: 1. Column; 2. Ring beam; 3. Exterior wall panel; 4. Inner insulation layer; 5. Column insulation shell; 6. Beam insulation shell; 7. Insulating layer; 8. Column connector; 9. Panel connector; 10. Insulating pressure block; 11. Groove; 12. Connecting ring; 13. Thermal insulation caulking strip; 14. Enclosed airtight cover; 15. Support mesh. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0019] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] A type of thermal break wall structure for factory buildings, such as Figures 1-5 As shown, the structure mainly includes a support column 1, a ring beam 2, an exterior wall panel 3, and an internal insulation layer 4. Support column 1 and ring beam 2 are the load-bearing frame structures of the factory building. In actual engineering, they are usually made of cast-in-place reinforced concrete or precast steel sections, possessing high strength and rigidity to bear the vertical and horizontal loads of the factory building structure. The outer surfaces of support column 1 and ring beam 2 are located on the inner surfaces of exterior wall panel 3, meaning that exterior wall panel 3 is set on the outer side of support column 1 and ring beam 2. A certain distance is maintained between exterior wall panel 3 and the outer surfaces of support column 1 and ring beam 2, rather than direct contact. Instead, exterior wall panel 3 is fixedly connected to support column 1 through a thermal break bridge connection component. This thermal break bridge connection component not only performs the mechanical function of fixing exterior wall panel 3 to the main structure but also forms an effective thermal barrier in the heat transfer path. Through this connection method, a continuous thermal insulation space is formed between the outer surfaces of the support column 1 and the ring beam 2 and the inner surface of the exterior wall panel. The width of this thermal insulation space can be adjusted according to the insulation design requirements, generally controlled between 10-30 cm, to adapt to the different requirements of insulation layer thickness in different climate zones. The existence of this thermal insulation space ensures that heat transfer from indoors to outdoors must pass through the insulation material filled in this thermal insulation space, rather than being directly conducted to the exterior wall panel 3 via the support column 1 or the ring beam 2, which have a higher thermal conductivity, thus achieving an initial blockage of the heat transfer path.

[0022] The outer side of the support column 1 is wrapped with a column insulation shell 5, and the outer side of the ring beam 2 is wrapped with a beam insulation shell 6. The column insulation shell 5 and the beam insulation shell 6 are tightly attached to the exposed surfaces of the support column 1 and the ring beam 2, respectively, forming the first insulation barrier on the outer periphery of the structural components. In some embodiments, both the column insulation shell 5 and the beam insulation shell 6 include an inner insulation core board and an outer protective covering layer. The insulation core board and the protective covering layer are combined into a whole by bonding, hot pressing, or co-extrusion processes. The insulation core board can be made of high-efficiency insulation materials such as extruded polystyrene board, molded polystyrene board, rock wool board, or polyurethane rigid foam board. The thermal conductivity of these materials is much lower than that of reinforced concrete and structural steel. The protective covering layer can be made of materials such as fiber-reinforced cement mortar, polymer-modified cement mortar, aluminum plate, or galvanized steel plate. The protective covering layer wraps around the outer surface of the insulation core board. When heat encounters the insulation core board, due to the abrupt change in thermal conductivity, the heat transfer path is forced to change from direct longitudinal conduction along the component to bypassing along the column insulation shell 5 or beam insulation shell 6. The heat transfer path is lengthened, thus heat can be lost, and the amount of heat transferred is correspondingly reduced. The protective covering layer extends outward with a certain width of flange at the four edges of the insulation core board. This flange is attached to the side wall surface of the column 1 or ring beam 2 and fixed to the concrete or steel surface of the column 1 or ring beam 2 with stainless steel anchors or corrosion-resistant self-tapping screws. The protective covering layer is used to prevent the insulation core board from external damage, such as mechanical impact, scratches, and rainwater erosion, thereby extending the service life of the insulation core board.

[0023] The column insulation shell 5 and the beam insulation shell 6 overlap at the intersection of the column 1 and the ring beam 2. Due to the complex geometry of this intersection, there is heat transfer convergence in multiple directions. If the column insulation shell 5 and the beam insulation shell 6 are disconnected at this point, a typical three-dimensional thermal bridge effect will be formed, and heat may bypass the insulation layer from multiple directions. Therefore, the overlap treatment at the node is particularly important. The column insulation shell 5 and the beam insulation shell 6 can be spliced ​​at the node using a 45-degree oblique angle butt joint, a stepped overlap, or an L-shaped interlocking method to ensure that the insulation layer in the node area is continuous and uninterrupted.

[0024] The insulated space is filled with a filling insulation layer 7. This filling insulation layer 7 fills all the gaps between the outer surfaces of the column insulation shell 5 and the beam insulation shell 6 and the inner surfaces of the exterior wall panel 3, that is, the filling insulation layer 7 completely fills the cavities between the column insulation shell 5 and the beam insulation shell 6 and the exterior wall panel 3. The material of the filling insulation layer 7 can be formed by on-site spraying of rigid polyurethane foam, on-site pouring of foamed cement, filling with rock wool board, or filling with polystyrene board, etc. Its thermal conductivity should also be controlled at a low level to maintain the thermal insulation performance of the insulated space.

[0025] The infill insulation layer 7 and the inner insulation layer 4 continuously overlap at the sides of the support column 1 and the ring beam 2. Specifically, this means that the edges of the infill insulation layer 7 and the inner insulation layer 4 connect with each other at the sides of the support column 1 and the ring beam 2, and the overlap is fixed with insulation adhesive or mechanical fasteners to ensure that there are no breaks, misalignments, or gaps in the insulation material at the overlap. More importantly, the joints at the overlap should be staggered, that is, the joints of the infill insulation layer 7 and the inner insulation layer 4 are not on the same plane to avoid forming a continuous thermal bridge channel.

[0026] Through the aforementioned overlapping structure, the column insulation shell 5, beam insulation shell 6, filling insulation layer 7, and inner insulation layer 4 together constitute a continuous insulation covering that encompasses all exposed surfaces of the column 1 and ring beam 2. This continuous insulation covering completely encloses all exposed surfaces of the column 1 and ring beam 2 in three-dimensional space, including the four sides of the column 1 and all longitudinal surfaces within the floor height range, the bottom and sides of the ring beam 2 and all transverse surfaces along the building circumference, as well as the node area where the column 1 and ring beam 2 intersect, avoiding the existence of structural surfaces. This continuous wrapping structure fundamentally reduces the thermal bridge channels caused by partial exposure of structural components or discontinuous segmentation of the insulation layer in traditional insulation methods, preventing heat from bypassing the insulation layer and directly conducting from the surface of the structural components to the outdoor environment.

[0027] The thermal bridging connection assembly includes a column connector 8 fixed to the outside of the support column 1, a panel connector 9 embedded in the inside of the exterior wall panel 3, and a thermal insulation bearing block 10 sandwiched between the two. When the support column 1 is a reinforced concrete component, the column connector 8 is a pre-embedded steel plate or a post-installed chemical anchor. When the support column 1 is a steel component, the column connector 8 can be a clamp. The panel connector 9 is pre-embedded in the exterior wall panel 3 during factory prefabrication. During manufacturing, before pouring the concrete for the exterior wall panel 3, the panel connector 9 is fixed in the steel reinforcement frame of the mold of the exterior wall panel 3 according to the design position, and then poured together with the concrete to form a whole with the exterior wall panel 3.

[0028] The column connector 8 and the hanging plate connector 9 are positioned correspondingly to ensure accurate alignment during subsequent installation. The column connector 8 and the hanging plate connector 9 do not contact each other, that is, they maintain a certain net clearance in the axial direction. The width of this clearance can be 10-30mm. There is no direct metal-to-metal contact between the end face of the column connector 8 and the end face of the hanging plate connector 9. Pressure is transmitted between them through the heat insulation bearing block 10. The two ends of the heat insulation bearing block 10 are fixed to the column connector 8 and the hanging plate connector 9 respectively by bolts.

[0029] Specifically, the forces on the exterior wall panel 3 are first transferred to one end of the thermal insulation pressure block 10 through the pre-embedded panel connector 9, and then the thermal insulation pressure block 10 transfers these forces to the column connector 8 at the other end. Throughout the load transfer path, the thermal insulation pressure block 10 is under pressure, while the column connector 8 and panel connector 9 apply pressure to the thermal insulation pressure block 10 from both sides. Since there is no direct contact between the column connector 8 and the panel connector 9, heat cannot be directly conducted along the metal path with a high thermal conductivity, but must be transferred across the thermal insulation pressure block 10 with an extremely low thermal conductivity. This structure not only ensures a reliable connection and load transfer between the exterior wall panel 3 and the main structure, but also sets an effective heat-blocking layer in the heat transfer path, taking into account both structural safety and thermal insulation performance requirements.

[0030] In some embodiments, the heat-insulating pressure block 10 is made of fiber-reinforced resin-based composite material. The specific type of fiber-reinforced resin-based composite material can be glass fiber reinforced plastic, basalt fiber reinforced plastic, or carbon fiber reinforced plastic. All of these materials use thermosetting resin as the matrix and continuous or chopped fibers as the reinforcing phase, and are manufactured through processes such as pultrusion or compression molding. Fiber-reinforced resin-based composite materials have advantages such as high specific strength, high specific stiffness, and extremely low thermal conductivity, with a thermal conductivity not exceeding 0.3 W / (m·K), far lower than that of steel. Therefore, heat transfer is hindered when encountering the heat-insulating pressure block 10, thereby reducing heat transfer efficiency. Simultaneously, the fiber-reinforced resin-based composite material has high compressive strength and high elastic modulus, which can meet the load requirements transmitted from the external wall panel 3, thus ensuring the long-term structural safety of the connection node while guaranteeing the heat insulation effect.

[0031] In some embodiments, the heat-insulating pressure block 10 has a plurality of annular grooves 11 spaced apart along its length. These grooves 11 form an alternating concave-convex structure on the outer peripheral surface of the heat-insulating pressure block 10. The groove 11 is partly an annular groove that tapers radially inward, and the part between adjacent grooves 11 is an annular flange that protrudes radially outward. The grooves and flanges are arranged alternately along the axial direction of the heat-insulating pressure block 10. The groove depth of the groove 11 is generally 2-3 mm, the groove width is 2-5 mm, and the distance between adjacent grooves 11 is 5-15 mm. A connecting ring 12 is sleeved on the outer side of the heat-insulating pressure block 10. The connecting ring 12 is a cylindrical or sleeve-shaped annular component. The connecting ring 12 can be made of fiber-reinforced resin-based composite material consistent with the heat-insulating pressure block 10. Its inner diameter is matched with the outer diameter of the heat-insulating pressure block 10. The inner wall of the heat-insulating pressure block 10 and the connecting ring 12 are interference-fitted, that is, the outer diameter of the heat-insulating pressure block 10 is slightly larger than the inner diameter of the connecting ring 12. During assembly, the interference fit can be achieved by heat fitting or pressing. The groove 11 provides a small elastic deformation space for the material of the inner wall of the connecting ring 12 during the interference fit. This effectively reduces the assembly difficulty and stress of interference fit. At the same time, the alternating distribution of grooves 11 and flanges significantly increases the contact area and friction coefficient between the heat insulation bearing block 10 and the connecting ring 12, making the connection between the two more solid and preventing relative rotation or axial slippage due to vibration or temperature changes during long-term use. Furthermore, when the heat insulation bearing block 10 is subjected to axial pressure, the presence of grooves 11 makes the pressure transmission path along the axial direction wavy, avoiding linear stress concentration and promoting stress uniformity, thereby improving the compressive bearing capacity and fatigue life of the heat insulation bearing block 10.

[0032] In some embodiments, a thermal break sealant strip 13 is embedded in the splicing gap at the overlap of the column insulation shell 5 and the beam insulation shell 6. At the intersection of the support column 1 and the ring beam 2, the ends of the column insulation shell 5 and the beam insulation shell 6 need to be spliced ​​together by overlapping, butting or interlocking. Due to the inevitable dimensional deviations and installation errors during on-site construction, a gap of a certain width is often formed at the splicing point. If the gap is not treated, the air filled inside will become a channel for heat transfer. Although the thermal conductivity of air is low, when there is a temperature difference on both sides of the gap, the air in the gap may undergo convective heat transfer. Furthermore, if the insulation materials on both sides of the gap are not continuous, heat can also be transferred across the gap by radiation. The thermal break caulking strip 13 is embedded in the splicing gap, completely filling the gap. The thermal conductivity of the thermal break caulking strip 13 is not higher than that of the thermal insulation core board. That is, the thermal break caulking strip 13 is made of insulation material with a thermal conductivity equivalent to or lower than that of the thermal insulation core board. Preferably, it can be made of the same material as the thermal insulation core board, or a flexible insulation material with a lower thermal conductivity. The flexible thermal break caulking strip 13 is in a compressed state during installation. It relies on its own elastic recovery force to fit tightly against the two side walls of the gap. It can effectively block heat conduction and adapt to the thermal expansion and contraction deformation of the insulation shell caused by temperature changes, preventing new gaps from appearing between the caulking strip and the gap wall due to inconsistent deformation.

[0033] As a further improvement, a closed air-tight cover 14 is provided at the axial gap between the column connector 8 and the hanging plate connector 9. Although the axial gap between the column connector 8 and the hanging plate connector 9 is blocked by the heat-insulating pressure block 10, if the gap itself is exposed to the external environment, the air in this gap may form a convection circulation under the action of temperature difference. Through the convection heat transfer inside the gap, heat is transferred from the column connector 8 side to the hanging plate connector 9 side, weakening the overall heat insulation effect of the thermal break bridge connection assembly. In addition, external moisture may invade the gap and form condensate when the temperature difference is large, which will have an adverse effect on the material properties of the heat-insulating pressure block 10 and may also cause corrosion of the metal connector. Therefore, a closed airtight cover 14 is installed, with one end of the closed airtight cover 14 sealed to the outer periphery of the column connector 8 and the other end sealed to the outer periphery of the hanging plate connector 9, forming a cover space that completely seals the gap. The heat insulation pressure block 10 is housed inside the closed airtight cover 14, that is, the closed airtight cover 14 completely encloses the heat insulation pressure block 10 and the gap between the column connector 8 and the hanging plate connector 9. The closed airtight cover 14 can be made of flexible materials, such as EPDM rubber corrugated pipe, silicone rubber corrugated pipe or PVC corrugated pipe. Its two ends are connected to the outer periphery of the column connector 8 and the hanging plate connector 9 by clamps, adhesives or flanges to form an airtight seal, so that the air in the gap is effectively isolated from the outside atmosphere. At the same time, external moisture, dust and corrosive gases cannot penetrate into the gap, improving the overall durability and heat insulation performance.

[0034] In some embodiments, since the insulation layer 7 is filled in the large-span cavity between the exterior wall panel 3 and the column insulation shell 5 and the beam insulation shell 6, and several support nets 15 for supporting the insulation layer are provided between the exterior wall panel 3 and the column 1, if the insulation layer 7 lacks effective internal support during long-term use, it may experience overall settlement or partial detachment under gravity, resulting in hollow areas at the top of the insulation layer, cracks in the middle, or excessive local accumulation at the bottom, ultimately affecting the insulation effect and the durability of the wall. The support nets 15 can solve this problem. The support nets 15 are supported by galvanized steel wire or alkali-resistant glass fiber mesh. The support nets 15 divide the insulation layer 7 into several sections along the height direction, and the insulation material in each section is effectively supported by the support nets 15 below, thereby ensuring that the insulation layer 7 remains stable during long-term use.

[0035] A construction method for a thermally broken wall structure in a factory building, comprising the following steps: S1: Install column insulation shell 5 and beam insulation shell 6 on the outside of column 1 and ring beam 2, so that column insulation shell 5 and beam insulation shell 6 overlap at the intersection node to form an insulation wrapping layer covering the exposed surface of column 1 and ring beam 2.

[0036] During the construction preparation phase, the dimensions, positions, and verticality of the support column 1 and the ring beam 2 should be checked and accepted according to the design drawings to ensure that the construction error of the structural components meets the specifications. At the same time, the prefabrication quality of the exterior wall panel 3 should be checked to confirm that the pre-embedded position of the panel connector 9 is accurate, the anchoring is reliable, and there is no loosening or deviation. The dimensions, flatness, and appearance quality of the exterior wall panel 3 should be inspected piece by piece. Only after passing the inspection can the installation process begin.

[0037] When installing the insulation wrapping layer on the outside of the support column 1 and the ring beam 2, first apply a special insulation adhesive to the outer surface of the support column 1 and the ring beam 2. The insulation adhesive can be a polymer-modified cement adhesive or a polyurethane adhesive, and apply it evenly. Then, attach the column insulation shell 5 and the beam insulation shell 6 to the outer surface of the support column 1 and the ring beam 2 respectively and apply appropriate pressure to make the adhesive evenly distributed and in full contact with the surface of the components. Before the adhesive cures, use plastic expansion anchors or stainless steel anchors for mechanical fixation. The spacing of the anchors is generally between 300-500mm. At the intersection of the support column 1 and the ring beam 2, the end of the column insulation shell 5 and the end of the beam insulation shell 6 are overlapped. The overlap can be done at a 45° angle or in a stepped manner, so that the joints of the two are staggered. During or after the overlapping process, thermal break caulking strip 13 is embedded in the splicing gap. During construction, tools such as flat chisels can be used to press the caulking strip into the gap so that it fits tightly against the two side walls of the gap, and the surface is smoothed. After the insulation shell is installed, its surface flatness should be checked to ensure that the base for subsequent filling of the insulation layer 7 is flat.

[0038] S2: Fix the column connector 8 of the thermal break bridge connection assembly to the outside of the column 1, and pre-embed the hanging plate connector 9 inside the outer wall hanging plate 3.

[0039] In the installation of column connector 8, the installation of column connector 8 should be carried out after the insulation shell is installed. During installation, firstly, installation holes are drilled on the column insulation shell 5 according to the design position. The installation holes penetrate the column insulation shell 5 and extend to the surface of the support column 1. Then, anchor bolt holes are drilled on the support column 1, and after cleaning the holes, chemical anchor bolts or mechanical anchor bolts are inserted. The specifications and quantity of anchor bolts should be determined according to the load calculation of the external wall panel 3. Finally, the column connector 8 is fixed to the side of the support column 1 with anchor bolts. The end of the column connector 8 should protrude from the outer surface of the column insulation shell 5 by a certain length, which can be controlled between 20-50mm, for subsequent docking with the heat insulation bearing block 10. The column connector 8 can also be pre-embedded, that is, the column connector 8 is directly embedded into the concrete of the support column 1 during the pouring of concrete.

[0040] Similarly, the panel connector 9 can also be pre-embedded in the exterior wall panel 3 during factory prefabrication. In specific operation, the position of the panel connector 9 is arranged in the panel mold according to the design drawings. The panel connector 9 is fixed in the designated spatial coordinates in the mold by steel reinforcement frame or positioning bracket. Then, concrete is poured and vibrated to compact it. After curing, the panel is demolded, and the panel connector 9 becomes an integral part of the exterior wall panel 3. The pre-embedded end of the panel connector 9 should be equipped with an anchor plate or hook to enhance its anchoring force with the panel concrete and prevent pull-out damage due to insufficient anchoring during panel hoisting and use.

[0041] S3: The heat-insulating pressure block 10 is sandwiched between the column connector 8 and the hanging plate connector 9, so that the column connector 8 and the hanging plate connector 9 do not contact each other and the pressure is transmitted only through the heat-insulating pressure block 10, thus completing the thermal break bridge connection between the external wall hanging plate 3 and the column 1.

[0042] In the installation of the exterior wall panel 3 and the thermal break bridge connection components, the prefabricated exterior wall panel 3 is first lifted from the storage area to the installation position. After the panel connector 9 and the column connector 8 are initially aligned, the thermal insulation pressure block 10 is placed between them. To facilitate installation, one end of the thermal insulation pressure block 10 can be fitted onto the end of the column connector 8 so that the end face of the column connector 8 is close to the end face of one end of the thermal insulation pressure block 10. Then, the exterior wall panel 3 is slowly pushed in so that the end face of the panel connector 9 is close to the end face of the other end of the thermal insulation pressure block 10 and anchored. After installation, a sealed airtight cover 14 is installed in the gap between the column connector 8 and the hanging plate connector 9. One end of the sealed airtight cover 14 is fitted onto the outer periphery of the column connector 8 and fixed with clamps or sealant. The other end is fitted onto the outer periphery of the hanging plate connector 9 and sealed and fixed in the same way, so that the heat insulation pressure block 10 is completely contained in the internal space of the sealed airtight cover 14, thus completing the thermal break bridge connection between the external wall hanging plate 3 and the column 1.

[0043] S4: Fill the insulation layer 7 in the insulation space between the external wall panel 3 and the column 1 and the ring beam 2, so that the insulation layer 7 and the inner insulation layer 4 continuously overlap at the sides of the column 1 and the ring beam 2, forming a continuous insulation covering that covers all exposed surfaces of the column 1 and the ring beam 2.

[0044] In the construction of the insulation layer 7 and the inner insulation layer 4, before filling the insulation layer, a support net 15 is first installed in the insulation space. The support net 15 is arranged vertically and horizontally at intervals. One end of the support net 15 is fixed to the protective covering layer of the column insulation shell 5 or beam insulation shell 6 with anchors, and the other end extends freely to the vicinity of the inner side of the outer wall panel 3. Then, the construction of the insulation layer 7 is carried out. The insulation layer 7 can be filled with polyurethane rigid foam sprayed on site or with board-shaped filling material. In specific operation, a high-pressure spraying device can be used to spray the polyurethane composite material into the insulation space. The spraying should be carried out in layers, and the next layer should be sprayed after the previous layer has cured, until all gaps are filled. When board-shaped filling material is used, the cut rock wool board or polystyrene board is embedded into the insulation space one by one. The boards should be staggered and fixed with adhesive. After filling, the surface of the insulation layer 7 is trimmed to make its outer surface flat and without gaps between it and the inner side of the outer wall panel 3.

[0045] Regarding the construction of the inner insulation layer 4, the inner insulation layer 4 is set on the inner side of the support column 1 and the ring beam 2 on the indoor side of the factory building. When laying it, its edge should extend towards the side of the support column 1 and the ring beam 2, and overlap with the inner edge of the filling insulation layer 7 on the side. The overlap can be coated with insulation adhesive to ensure continuity.

[0046] Through the above construction steps, the column insulation shell 5, the beam insulation shell 6, the filling insulation layer 7 and the inner insulation layer 4 are connected in three-dimensional space to form a continuous insulation cover, which wraps all the exposed surfaces of the column 1 and the ring beam 2 within the insulation material.

[0047] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A thermal break wall structure for a factory building, comprising columns, ring beams, external wall panels, and an internal insulation layer, characterized in that: The outer sides of the support column and the ring beam are located on the inner side of the exterior wall panel. The exterior wall panel and the support column are connected by a thermal break bridge connection component, so that a thermal insulation space is formed between the outer sides of the support column and the ring beam and the inner side of the exterior wall panel. The outer side of the support column is wrapped with a column insulation shell, and the outer side of the ring beam is wrapped with a beam insulation shell. The insulated space is filled with a filling insulation layer, which fills the gap between the outer surface of the column insulation shell and the beam insulation shell and the inner surface of the outer wall panel. The filling insulation layer and the inner insulation layer continuously overlap at the sides of the column and the ring beam, thereby forming a continuous insulation covering the entire exposed surface of the column and the ring beam. The thermal break bridge connection assembly includes a column connector fixed to the outside of the column, a panel connector embedded in the inside of the exterior wall panel, and a thermal insulation pressure block sandwiched between the two. The column connector and the panel connector do not contact each other and the pressure is transmitted only through the thermal insulation pressure block.

2. The thermal break wall structure for a factory building according to claim 1, characterized in that: The heat-insulating pressure block is made of fiber-reinforced resin-based composite material with a thermal conductivity of no more than 0.3 W / (m·K), and the projected area of ​​the heat-insulating pressure block in the direction perpendicular to the wall is greater than the projected area of ​​the column connector and the hanging plate connector.

3. The thermal break wall structure for a factory building according to claim 1, characterized in that: The heat-insulating pressure-bearing block has several annular grooves spaced apart along its length. A connecting ring is fitted on the outer side of the heat-insulating pressure-bearing block, and the heat-insulating pressure-bearing block and the inner wall of the connecting ring are interference fit.

4. The thermal break wall structure for a factory building according to claim 1, characterized in that: The column insulation shell and the beam insulation shell overlap at the intersection of the column and the ring beam. Both the column insulation shell and the beam insulation shell include an inner insulation core board and an outer protective covering layer, and the two are composite together.

5. The thermal break wall structure for a factory building according to claim 4, characterized in that: The protective covering layer is wrapped around the outer surface of the insulation core board, and the edge of the protective covering layer extends and is anchored to the side wall of the support column or ring beam.

6. The thermal break wall structure for a factory building according to claim 1, characterized in that: A thermal break caulking strip is embedded in the splicing gap at the overlap of the column insulation shell and the beam insulation shell. The thermal conductivity of the thermal break caulking strip is not higher than that of the insulation core board.

7. The thermal break wall structure for a factory building according to claim 1, characterized in that: A sealed air-tight cover is provided at the axial gap between the column connector and the hanging plate connector. One end of the sealed air-tight cover is sealed to the outer periphery of the column connector, and the other end is sealed to the outer periphery of the hanging plate connector. The heat-insulating pressure block is housed inside the sealed air-tight cover.

8. The thermal break wall structure for a factory building according to claim 1, characterized in that: Several support nets for supporting the insulation layer are provided between the exterior wall panel and the support column.

9. A construction method for a factory building thermal break wall structure, used to construct a factory building thermal break wall structure as described in any one of claims 1-8, comprising the following steps: S1: Install column insulation shells and beam insulation shells on the outside of the columns and ring beams, so that the column insulation shells and beam insulation shells overlap at the intersection nodes to form an insulation wrapping layer covering the exposed surfaces of the columns and ring beams. S2: Fix the column connector of the thermal break bridge connection assembly to the outside of the column, and pre-embed the hanging plate connector in the inside of the external wall hanging plate; S3: The thermal insulation pressure block is sandwiched between the column connector and the panel connector, so that the column connector and the panel connector do not contact each other and the pressure is transmitted only through the thermal insulation pressure block, thus completing the thermal break bridge connection between the external wall panel and the column. S4: Fill the insulation space between the exterior wall panel and the columns and ring beams with a filling insulation layer, so that the filling insulation layer and the inner insulation layer continuously overlap at the sides of the columns and ring beams, forming a continuous insulation covering all exposed surfaces of the columns and ring beams.

Images