A thermal insulation system within a steel construction system

Abstract

The application relates to the field of building steel structure heat preservation, in particular to a steel structure system internal heat preservation system, which comprises a steel beam cold bridge heat preservation structure, the steel beam cold bridge heat preservation structure comprises an inside beam heat preservation structure, the inside beam heat preservation structure comprises a bonding agent layer, a foam glass layer, a troweling mortar layer and a fixing assembly, the bonding agent layer is used for pasting the foam glass layer on the inside of the steel beam, the troweling mortar layer is attached to the outside of the foam glass layer, the fixing assembly comprises a first connecting part and a second connecting part, the first connecting part penetrates into the inside beam heat preservation structure and is fixed on the inside of the steel beam, and the second connecting part is connected to the first connecting part and abuts against the troweling mortar layer. The application realizes the application of the foam glass layer in the steel structure through the pasting method, the foam glass is fixed through the special fixing assembly, the scheme does not need to damage the foam glass, and therefore the heat preservation performance of the steel structure is improved.

Description

Technical Field

[0001] This application relates to the field of thermal insulation of building steel structures, and in particular to a thermal insulation system within a steel structure system. Background Technology

[0002] Steel structure engineering is an engineering structure primarily made of steel, constructed from steel profiles and plates through welding, bolting, or riveting. It is one of the major types of building structures. With increasing emphasis on thermal insulation and energy conservation in construction, more and more ordinary steel structure roofs are incorporating insulation design and construction. Currently, most steel structure roof insulation on the market uses rock wool and polystyrene board as the insulation layer. However, rock wool has strong water absorption, and its insulation capacity decreases significantly after absorbing water. Furthermore, polystyrene board, due to its flammable properties, poses a fire hazard.

[0003] Foam glass, as a high-performance material, offers advantages over traditional insulation materials, including lighter weight, lower thermal conductivity, lower water absorption, stable physicochemical properties, and energy efficiency. It is a green construction material strongly promoted in the industry. However, because foam glass is fixed using anchor bolts, it is primarily suitable for insulation of concrete wall structures. This fixing method is not applicable to steel structures, hence it is rarely chosen for internal insulation systems in steel structures. Therefore, how to apply foam glass internal insulation systems in steel structures is a pressing issue that needs to be addressed. Summary of the Invention

[0004] To address the challenge of utilizing foam glass in steel structures, this application provides an internal insulation system for steel structures.

[0005] The technical solution for the internal insulation system of a steel structure provided in this application is as follows:

[0006] A thermal insulation system for a steel structure includes a steel beam cold bridge insulation structure. The steel beam cold bridge insulation structure includes an inner insulation structure for the beam. The inner insulation structure for the beam includes an adhesive layer, a foam glass layer, a plastering mortar layer, and a fixing component. The adhesive layer is used to adhere the foam glass layer to the inner side of the steel beam. The plastering mortar layer is attached to the outer side of the foam glass layer. The fixing component includes a first connecting part and a second connecting part. The first connecting part extends into the inner insulation structure for the beam and is fixed to the inner side of the steel beam. The second connecting part is connected to the first connecting part and abuts against the plastering mortar layer.

[0007] By adopting the above technical solution, foam glass is fixed to the inner side of the steel beam of the steel structure by adhesive bonding and covering it with the plastering mortar layer. Finally, it is fixed by fixing components, thus fixing the foam glass to the steel structure. In this solution, the first connecting part of the fixing component is pre-fixed to the inner low surface of the steel beam, and then the foam glass layer and the plastering mortar layer are constructed. Finally, the second connecting part is fixed to the first connecting part to press the plastering mortar layer together, thereby fixing the foam glass layer and the plastering mortar layer. This solution does not require damaging the foam glass, thereby improving the thermal insulation performance of the steel structure and meeting the concept of green construction.

[0008] As a further improvement to the above technical solution, the plastering mortar layer includes an inner plastering mortar layer, a fiberglass mesh layer and an outer plastering mortar layer arranged in sequence, wherein the inner plastering mortar layer is attached to the outside of the foam glass layer.

[0009] By adopting the above technical solutions, the fiberglass mesh layer can resist surface cracking caused by changes in natural temperature and humidity as well as accidental impacts. The combination of the inner and outer layers of plastering mortar with the fiberglass mesh can enhance the stability of the steel structure insulation material and improve its durability and crack resistance.

[0010] As a further improvement to the above technical solution, the first connecting part and the second connecting part are hinged to each other, and a first elastic pin is provided between the first connecting part and the second connecting part to restrict the rotation of the second connecting part.

[0011] By adopting the above technical solution, the first connecting part and the second connecting part are hinged to each other. Before construction, the second connecting part is flipped to be horizontal with the first connecting part, and then the first connecting part is fixed to the bottom of the inner side of the steel beam. Then the foam glass layer and the plastering mortar layer are constructed. Finally, the second connecting part is flipped to be perpendicular to the first connecting part, so that the second connecting part and the plastering mortar layer are pressed together to fix the foam glass layer. The first elastic pin is used to prevent the second connecting part from rotating. This structure can fix the foam glass layer to the steel structure without damaging the structure of the foam glass layer.

[0012] As a further improvement to the above technical solution, a hinge shaft is fixed on the second connecting part, the first connecting part is provided with a hinge hole for the hinge shaft to pass through, a mounting groove is provided in the hinge hole, the first elastic pin is located in the mounting groove and one end of the first elastic pin extends out of the mounting groove and is located in the hinge hole, and a slot is provided on the hinge shaft that can cooperate with the extended end of the first elastic pin.

[0013] By adopting the above technical solution, when the second connecting part is flipped to a vertical position, the first elastic pin extends into the slot and the two cooperate with each other, making it difficult for the second connecting part to rotate, thereby preventing the second connecting part from detaching from the plastering mortar layer.

[0014] As a further improvement to the above technical solution, the first connecting part has an insertion hole at one end facing outward, and the second connecting part has an insertion block at one end. The insertion block is inserted into the insertion hole, and the insertion hole is provided with a second elastic pin and a third elastic pin. The second elastic pin and the third elastic pin are arranged on opposite sides, with the second elastic pin positioned above the third elastic pin. The second elastic pin is positioned on the side away from the plastering mortar layer. Both the second elastic pin and the third elastic pin can abut against the insertion block to make the second connecting part tilt towards the plastering mortar layer.

[0015] By adopting the above technical solution, when the lower end of the second connecting part is inserted into the first connecting part, the insert block pushes the second elastic pin and the third elastic pin to retract. When the insert block is inserted into place, the second elastic pin and the third elastic pin extend and abut against the insert block. Since the second elastic pin and the third elastic pin are arranged on opposite sides, the insert block has a force that tilts towards the plastering mortar layer, thereby causing the second connecting part to tilt towards the plastering mortar layer and press against the plastering mortar layer, improving the fastening effect of the foam glass layer and the plastering mortar layer.

[0016] As a further improvement to the above technical solution, the second connecting part is provided with a stop surface at one end of the insertion block. The stop surface is located on the side away from the plastering mortar layer. An elastic arc plate is provided on the stop surface. The elastic arc plate protrudes outward relative to the stop surface and abuts against the outer edge of the insertion hole.

[0017] By adopting the above technical solution, the elastic arc sheet is set so that when the second connecting part is inserted into the first connecting part, the elastic arc sheet abuts against the upward end face of the first connecting part. The elastic arc sheet is squeezed, which drives the second connecting part to tilt towards the plastering mortar layer, thereby pressing it tightly against the plastering mortar layer and further improving the fastening effect of the foam glass layer and the plastering mortar layer.

[0018] As a further improvement to the above technical solution, the steel beam cold bridge insulation structure also includes a beam bottom insulation structure, which includes a first interface agent layer and a first rock wool insulation board. The first rock wool insulation board is adhered to the bottom of the steel beam through the first interface agent layer.

[0019] By adopting the above technical solution, the first rock wool insulation board is bonded to the bottom of the steel beam through the first interface agent layer, which can make up for the defect of insufficient insulation at the bottom of the steel structure. This structure is low in cost and economical.

[0020] As a further improvement to the above technical solution, the thermal insulation system within the steel structure system also includes an exposed floor slab insulation structure. The exposed floor slab insulation structure is located at the bottom of the exposed floor slab, and the beam inner insulation structure is located at the bottom of the exposed floor slab and is connected to the exposed floor slab insulation structure. The exposed floor slab insulation structure includes a second interface agent layer, a second rock wool insulation board, and a crack-resistant mortar leveling layer. The second rock wool insulation board is adhered to the bottom of the exposed floor slab through the second interface agent layer, and the crack-resistant mortar leveling layer is attached to the outside of the second rock wool insulation board.

[0021] By adopting the above technical solution, rock wool insulation is applied to the bottom of the floor slab using an adhesive method, which compensates for the insufficient insulation of the exposed floor slab in the steel structure area. This structure is low-cost, economical and practical, and meets the requirements of insulation and green energy saving.

[0022] As a further improvement to the above technical solution, a cement mortar leveling layer is provided between the exposed floor slab and the second interface agent layer.

[0023] By adopting the above technical solution, the exposed floor slab is leveled with a cement mortar leveling layer before the construction of the second rock wool insulation board is carried out, thereby improving the stability of the construction of the second rock wool insulation board and improving the insulation effect.

[0024] As a further improvement to the above technical solution, the crack-resistant mortar leveling layer is provided with a reinforced fiberglass mesh.

[0025] By adopting the above technical solution, a reinforced fiberglass mesh is installed in the crack-resistant mortar leveling layer, which can resist surface cracking caused by changes in natural temperature and humidity as well as accidental impacts.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This method utilizes an adhesive bonding technique to apply foam glass layers to steel structures. The foam glass is secured using specialized fixing components, eliminating the need to damage the foam glass. This not only solves the problem of utilizing foam glass in insulation systems within steel structures but also improves the insulation performance of the steel structure. By employing appropriate technical modifications, this solution ensures convenient construction and installation while meeting insulation performance requirements, enabling the internal insulation of steel structure exterior walls to meet standard requirements and comply with green construction principles.

[0028] 2. By combining the elastic arc sheet and two elastic pins, the second connection part tends to tilt towards the plastering mortar layer, thereby pressing against the plastering mortar layer and enhancing the stability of the foam glass layer in the steel structure. This clamping method does not require damaging the structure of the foam glass layer. Attached Figure Description

[0029] Figure 1This is a schematic diagram of the internal insulation system of the steel structure system in Embodiment 1 of this application.

[0030] Figure 2 This is a schematic diagram of the steel beam cold bridge insulation structure in Embodiment 1 of this application.

[0031] Figure 3 This is a schematic diagram of the exposed floor slab insulation structure in Embodiment 1 of this application.

[0032] Figure 4 This is a schematic diagram of the structure of the fixing component in Embodiment 1 of this application.

[0033] Figure 5 This is an exploded view of the fixing component in Embodiment 1 of this application.

[0034] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0035] Figure 7 This is a schematic diagram of the structure of the fixing component in Embodiment 2 of this application.

[0036] Figure 8 This is an exploded view of the fixing component in Embodiment 2 of this application.

[0037] Explanation of reference numerals in the attached drawings: 100, Insulation structure for cold-bridged steel beams; 110, Insulation structure inside the beam; 1, Adhesive layer; 2, Foam glass layer; 3, Finishing mortar layer; 31, Inner finishing mortar layer; 32, Fiberglass mesh layer; 33, Outer finishing mortar layer; 5, Fixing component; 50, Elastic arc sheet; 51, First connection part; 52, Second connection part; 53, Hinge shaft; 54, Hinge hole; 55, Mounting groove; 56, Slot; 57, Insertion hole; 58, Insert block; 59, Stop surface. 6. Steel beam; 7. First elastic pin; 71. Pin rod; 711. Elastic support arm; 712. Limiting protrusion; 72. Spring; 8. Second elastic pin; 9. Third elastic pin; 120. Beam bottom insulation structure; 121. First interface agent layer; 122. First rock wool insulation board; 200. Exposed floor slab insulation structure; 210. Cement mortar leveling layer; 220. Second interface agent layer; 230. Second rock wool insulation board; 240. Crack-resistant mortar leveling layer; 300. Exposed floor slab. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0039] Example 1

[0040] This application discloses an internal insulation system for a steel structure.

[0041] like Figures 1 to 3As shown, the thermal insulation system within the steel structure system of this embodiment includes a steel beam cold bridge insulation structure 100 and an exposed floor slab insulation structure 200. The steel beam cold bridge insulation structure 100 includes an inner beam insulation structure 110 and a bottom beam insulation structure 120. The inner beam insulation structure 110 is located on the inner side of the steel beam 6, and the bottom beam insulation structure 120 is located at the bottom of the steel beam 6. The exposed floor slab insulation structure 200 is located at the bottom of the exposed floor slab 300, and the inner beam insulation structure 110 is located at the bottom of the exposed floor slab 300 and is interconnected with the exposed floor slab insulation structure 200. The steel beam 6 is an I-beam.

[0042] like Figure 2 As shown, specifically, the inner insulation structure 110 of the beam includes an adhesive layer 1, a foam glass layer 2, a plastering mortar layer 3, and a fixing component 5. The adhesive layer 1 is used to adhere the foam glass layer 2 to the inner side of the steel beam 6. The plastering mortar layer 3 includes an inner plastering mortar layer 31, a fiberglass mesh layer 32, and an outer plastering mortar layer 33 arranged sequentially. The inner plastering mortar layer 31 is attached to the outer side of the foam glass layer 2, such as... Figure 4 As shown, the fixing component 5 includes a first connecting part 51 and a second connecting part 52. Both the first connecting part 51 and the second connecting part 52 are steel plates. Before the construction of the foam glass layer 2 and the plastering mortar layer 3, the first connecting part 51 is first inserted and welded to the bottom of the inner side of the steel beam 6. Then, the construction of the foam glass layer 2 (thickness 80mm) and the plastering mortar layer 3 are carried out in sequence. Finally, the second connecting part 52 is connected to the first connecting part 51 and abuts against the plastering mortar layer 3. At this time, the first connecting part 51 and the second connecting part 52 form an L-shaped structure.

[0043] like Figure 5 and Figure 6As shown, the specific connection structure of the first connecting part 51 and the second connecting part 52 is as follows: the first connecting part 51 and the second connecting part 52 are hinged to each other, and a first elastic pin 7 is provided between the first connecting part 51 and the second connecting part 52 to restrict the rotation of the second connecting part 52. A hinge shaft 53 is fixed on the second connecting part 52, and the first connecting part 51 is provided with a hinge hole 54 for the hinge shaft 53 to pass through. A mounting groove 55 is provided in the hinge hole 54. The first elastic pin 7 includes a pin rod 71 and a spring 72. Both the pin rod 71 and the spring 72 are located in the mounting groove 55. The spring 72 abuts against the mounting groove 55 and the pin rod 71. One end of the pin rod 71 extends out of the mounting groove 55 and is located in the hinge hole 54. A groove 56 is provided on the hinge shaft 53 to cooperate with the extended end of the pin rod 71. In the initial state, the second connecting part 52 and the first connecting part 51 are horizontally aligned. At this time, the pin 71 and the slot 56 are separated, which facilitates the welding of the first connecting part 51 to the steel beam 6. After the foam glass layer 2 and the plastering mortar layer 3 are completed, the second connecting part 52 is flipped so that it is perpendicular to the first connecting part 51. The hinge shaft 53 rotates together, driving the slot 56 to rotate until the pin 71 and the slot 56 are inserted and engaged. The second connecting part 52 then stops flipping. At this time, the second connecting part 52 abuts against the outer plastering mortar layer 33, thereby fixing it.

[0044] For ease of installation, the end of the pin 71 near the spring 72 has an opening that divides the end of the pin 71 into two elastic arms 711. Each of the two elastic arms 711 has a limiting protrusion 712 on its opposite side. The two elastic arms 711 extend into the mounting groove 55. The opening of the mounting groove 55 has a limiting step. The limiting protrusion 712 can abut against the limiting step to prevent the pin 71 from disengaging from the mounting groove 55.

[0045] like Figure 2 As shown, in this embodiment, the beam bottom insulation structure 120 includes a first interface agent layer 121 and a first rock wool insulation board 122. The first rock wool insulation board 122 is attached to the bottom of the steel beam 6 through the first interface agent layer 121.

[0046] like Figure 3As shown, in this embodiment, the exposed floor slab insulation structure 200 includes a second interface agent layer 220, a second rock wool insulation board 230, and a crack-resistant mortar leveling layer 240. A cement mortar leveling layer 210 is provided between the exposed floor slab 300 and the second interface agent layer 220, and a reinforcing fiberglass mesh is provided inside the crack-resistant mortar leveling layer 240. The exposed floor slab 300 is a concrete floor slab. During construction, the cement mortar leveling layer 210 (20mm thick DP20 cement mortar leveling layer) is first constructed at the bottom of the exposed floor slab 300. Then, the 65mm thick second rock wool insulation board 230 is adhered to the cement mortar leveling layer 210 through the second interface agent layer 220. Finally, the crack-resistant mortar leveling layer 240 (20mm thick polymer waterproof crack-resistant mortar leveling layer) is constructed on the second rock wool insulation board 230. During the construction of the crack-resistant mortar leveling layer 240, a reinforcing fiberglass mesh is pressed into it.

[0047] The implementation principle of the internal insulation system of the steel structure in this embodiment is as follows:

[0048] Construction of the inner insulation structure 110 of the beam: The first connecting part 51 is welded to the inner bottom surface of the steel beam 6. At this time, the second connecting part 52 is set horizontally. Then, a special adhesive is fully applied to the inner web surface of the steel beam 6 to form an adhesive layer 1. Foam glass is pasted on the adhesive layer 1 to form a foam glass layer 2. After pasting, the inner plastering mortar layer 31 is constructed. Then, the corrugated fiber mesh is pressed into the inner plastering mortar layer 31. Then, the outer plastering mortar layer 33 is constructed. Then, the second connecting part 52 is flipped to a vertical position so that it is pressed against the outer plastering mortar layer 33. The second connecting part 52 is locked and limited by the first elastic pin 7.

[0049] Construction of the bottom insulation structure 120 of the beam: Firstly, an interface agent layer is applied to the bottom of the steel beam 6 to form the first interface agent layer 121, and then the first rock wool insulation board 122 is pasted on the first interface agent layer 121.

[0050] Construction of exposed floor slab insulation structure 200: The bottom of the exposed floor slab 300 is leveled with 20mm thick cement mortar to form a cement mortar leveling layer 210, then an interface agent is applied to form a second interface agent layer 220, and then a second rock wool insulation board 230 is pasted on the second interface agent layer 220. After completion, crack-resistant mortar is used to level the floor to form a crack-resistant mortar leveling layer 240, and at the same time, a reinforcing fiberglass mesh is set in the crack-resistant mortar leveling layer 240 for reinforcement.

[0051] Example 2

[0052] This application discloses an internal thermal insulation system for a steel structure, which differs from Embodiment 1 only in that:

[0053] like Figure 7 and Figure 8As shown, in this embodiment, the first connecting part 51 and the second connecting part 52 are connected by a plug-in joint. The outward-facing end of the first connecting part 51 has a plug hole 57, and one end of the second connecting part 52 has a plug block 58, which is inserted into the plug hole 57. The second connecting part 52 has a stop surface 59 at one end of the plug block 58. The stop surface 59 is located on the side away from the plastering mortar layer 3, and an elastic arc plate 50 is provided on the stop surface 59, protruding outward relative to the stop surface 59. When the first connecting part 51 is inserted into the second connecting part 52, the elastic arc plate 50 abuts against the outer edge of the plug hole 57 (this outer edge is the end face of the first connecting part 51 corresponding to the plug hole 57). This prevents the second connecting part 52 from falling off, and the elastic arc plate 50 rebounds under pressure, causing the second connecting part 52 to tilt outward towards the plastering mortar layer 33, thus pressing the second connecting part 52 tightly against the outer plastering mortar layer 33 and fixing the foam glass layer 2.

[0054] Furthermore, the insertion hole 57 is provided with a second elastic pin 8 and a third elastic pin 9, which are located on opposite sides. The second elastic pin 8 is positioned above the third elastic pin 9 and is located on the side away from the outer plastering mortar layer 33 (i.e., the outer side). The structure of the second elastic pin 8 and the third elastic pin 9 is the same as that of the first elastic pin 7. When the insertion block 58 is gradually inserted into the insertion hole 57, it will push the second elastic pin 8 and the third elastic pin 9 to retract in sequence. When the insertion block 58 is in place in the insertion hole 57, the second elastic pin 8 and the third elastic pin 9 both abut against the insertion block 58, applying two forces to the insertion block 58. These two forces cause the insertion block 58 to have a counterclockwise rotation tendency, thereby causing the second connecting part 52 to tilt towards the outer plastering mortar layer 33, thereby pressing against the outer plastering mortar layer 33 and further fixing the foam glass layer 2. The combination of the elastic arc plate 50 and the two elastic pins enhances the stability of the foam glass layer 2 during installation in the steel structure, and this clamping method does not require damage to the structure of the foam glass layer 2.

[0055] In this embodiment, the insert 58 is provided with a notch corresponding to the positions of the second elastic pin 8 and the third elastic pin 9. The second elastic pin 8 and the third elastic pin 9 are respectively inserted into the corresponding notches. The notches can limit the position of the insert 58, making it less likely to fall out of the socket 57.

[0056] The implementation principle of the internal insulation system of the steel structure in this embodiment is as follows:

[0057] Construction of the inner insulation structure 110 of the beam: The first connecting part 51 is welded to the inner bottom surface of the steel beam 6. At this time, the second connecting part 52 is separated from the first connecting part 51. Then, the adhesive layer 1, foam glass layer 2, and plastering mortar layer 3 are constructed according to the relevant steps of Example 1. Then, the second connecting part 52 is inserted into the first connecting part 51. The second elastic pin 8 and the third elastic pin 9 limit the second connecting part 52, thereby realizing the connection between the second connecting part 52 and the first connecting part 51 and pressing the plastering mortar layer 3 together.

[0058] The construction of the beam bottom insulation structure 120 and the exposed floor slab insulation structure 200 are the same as in Example 1, and will not be described again here.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A thermal insulation system within a steel structure, characterized in that: The steel beam cold bridge insulation structure (100) includes an inner insulation structure (110) for the beam. The inner insulation structure (110) includes an adhesive layer (1), a foam glass layer (2), a plastering mortar layer (3), and a fixing component (5). The adhesive layer (1) is used to attach the foam glass layer (2) to the inner side of the steel beam (6). The plastering mortar layer (3) is attached to the outer side of the foam glass layer (2). The fixing component (5) includes a first connecting part (51) and a second connecting part (52). The first connecting part (51) extends into the inner insulation structure (110) and is fixed to the inner side of the steel beam (6). The second connecting part (52) is connected to the first connecting part (51) and abuts against the plastering mortar layer (3). The first connecting part (51) and the second connecting part (52) are hinged to each other, and a first elastic pin (7) is provided between the first connecting part (51) and the second connecting part (52) to restrict the second connecting part (52) from flipping. The second connecting part (52) is fixed with a hinge shaft (53), the first connecting part (51) is provided with a hinge hole (54) for the hinge shaft (53) to pass through, the hinge hole (54) is provided with a mounting groove (55), the first elastic pin (7) is located in the mounting groove (55) and one end of the first elastic pin (7) extends out of the mounting groove (55) and is located in the hinge hole (54), and the hinge shaft (53) is provided with a slot (56) that can cooperate with the extended end of the first elastic pin (7); The first connecting part (51) has an insertion hole (57) at one end facing outwards, and the second connecting part (52) has an insertion block (58) at one end. The insertion block (58) is inserted into the insertion hole (57). The insertion hole (57) is provided with a second elastic pin (8) and a third elastic pin (9). The second elastic pin (8) and the third elastic pin (9) are located on opposite sides, and the second elastic pin (8) is located above the third elastic pin (9). The second elastic pin (8) is located on the side away from the plastering mortar layer (3). Both the second elastic pin (8) and the third elastic pin (9) can abut against the insertion block (58) so that the second connecting part (52) is inclined towards the plastering mortar layer (3).

2. The thermal insulation system within a steel structure according to claim 1, characterized in that: The plastering mortar layer (3) includes an inner plastering mortar layer (31), a fiberglass mesh layer (32) and an outer plastering mortar layer (33) arranged in sequence. The inner plastering mortar layer (31) is attached to the outside of the foam glass layer (2).

3. The thermal insulation system within a steel structure according to claim 1, characterized in that: The second connecting part (52) has a stop surface (59) at one end of the insert (58). The stop surface (59) is located on the side away from the plastering mortar layer (3). An elastic arc plate (50) is provided on the stop surface (59). The elastic arc plate (50) protrudes outward relative to the stop surface (59). The elastic arc plate (50) abuts against the outer edge of the insertion hole (57).

4. The thermal insulation system within a steel structure according to any one of claims 1 to 3, characterized in that: The cold bridge insulation structure (100) of the steel beam also includes a bottom insulation structure (120), which includes a first interface agent layer (121) and a first rock wool insulation board (122). The first rock wool insulation board (122) is attached to the bottom of the steel beam (6) through the first interface agent layer (121).

5. The thermal insulation system within a steel structure according to any one of claims 1 to 3, characterized in that: The thermal insulation system within the steel structure system also includes an exposed floor slab insulation structure (200), which is located at the bottom of the exposed floor slab (300). The inner beam insulation structure (110) is located at the bottom of the exposed floor slab (300) and is connected to the exposed floor slab insulation structure (200). The exposed floor slab insulation structure (200) includes a second interface agent layer (220), a second rock wool insulation board (230), and a crack-resistant mortar leveling layer (240). The second rock wool insulation board (230) is bonded to the bottom of the exposed floor slab (300) through the second interface agent layer (220), and the crack-resistant mortar leveling layer (240) is attached to the outside of the second rock wool insulation board (230).

6. The thermal insulation system within a steel structure according to claim 5, characterized in that: A cement mortar leveling layer (210) is provided between the exposed floor slab (300) and the second interface agent layer (220).

7. The thermal insulation system within a steel structure according to claim 5, characterized in that: The crack-resistant mortar leveling layer (240) is provided with a reinforced fiberglass mesh.

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