Thermal insulation integrated expansion joint structure
By using an integrated insulation structure in building expansion joints, combined with rock wool boards and sealing components, the problem of weakened adhesion between insulation materials and the substrate is solved, achieving stable insulation and decorative effects as well as long-term waterproofing capabilities.
Patent Information
- Application Number
- CN202520295701.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-24
AI Technical Summary
In existing building floor expansion joints, the adhesion between the insulation material and the base layer is severely weakened. Long-term exposure to high temperature, humidity or freeze-thaw cycles leads to hollowing, separation and leakage. Existing construction methods are unstable.
The structure adopts an integrated thermal insulation expansion joint structure, including cast-in-place concrete walls, connecting bridges, internal filling cavity supports, insulation layers, protective layers, and finishing layers. Rock wool boards and thermal sealing components are used for sealing, and steel wire mesh and L-shaped connectors are combined to improve stability, forming an integrated thermal insulation and decorative structure.
This allows for simultaneous construction of insulation and decoration at expansion joints, improving structural stability and service life, preventing insulation material from falling off and leaking, and ensuring long-term waterproof performance.
Smart Images
Figure CN223838328U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of expansion joint construction technology, specifically to an integrated thermal insulation expansion joint structure. Background Technology
[0002] Currently, in the treatment of floor slab expansion joints in buildings, most methods involve filling the expansion joints with insulation material bonded by construction adhesive, sealing both ends of the insulation material with sealant, and finally decorating the edges of the sealant to form a sealed insulation structure. However, this construction method suffers from severe adhesion loss in the later stages. Long-term exposure to high temperatures, humidity, or freeze-thaw cycles can alter the molecular structure of the construction adhesive, leading to weakened adhesion and causing hollowing and separation between the insulation material and the substrate, resulting in insulation material detachment and water leakage. Utility Model Content
[0003] The purpose of this utility model is to provide an integrated thermal insulation expansion joint structure. This structure can simultaneously carry out thermal insulation and decoration work at the expansion joint location. It has a simple and compact structure, is easy to construct, and has a long service life.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] An integrated thermal insulation expansion joint structure includes two spaced-apart walls and an expansion joint between the two walls. Each wall comprises a cast-in-place concrete wall, a connecting bridge within the cast-in-place concrete wall, an inner filling cavity support within the cast-in-place concrete wall, an insulation layer outside the cast-in-place concrete wall, a protective layer outside the insulation layer, and a finishing layer outside the protective layer. One end of the connecting bridge passes through the insulation layer and fixes the insulation layer to the outside of the cast-in-place concrete wall. One end of the inner filling cavity support is fixedly connected to the insulation layer. Rock wool boards are installed within the expansion joint, and thermal insulation sealing components are installed at the ends of the rock wool boards. The two ends of the thermal insulation sealing components are respectively connected to the two walls.
[0006] Preferably, the thermal insulation sealing component includes a stainless steel plate wrapped between the rock wool board and the two walls, thermal insulation rock wool filled in the stainless steel plate, and a cover plate disposed on the outside of the thermal insulation rock wool, wherein the two ends of the cover plate are fixedly connected to the two ends of the stainless steel plate.
[0007] Preferably, a wire mesh is provided inside the protective layer, and multiple external filling cavity supports are installed on the wire mesh, with one end of each external filling cavity support fixedly installed on the insulation layer.
[0008] Preferably, an L-shaped connector is provided inside the protective layer, and one end of the L-shaped connector passes through the insulation layer and is fixedly installed inside the cast-in-place concrete wall.
[0009] Preferably, a connecting part is provided at the end of the inner filling cavity support, and an extrusion part is detachably installed on the connecting part, the extrusion part extruding and fixing the insulation layer to the outside of the cast-in-place concrete wall.
[0010] Preferably, a waterproof layer is provided between the stainless steel plate and the wall.
[0011] In this invention, rock wool boards are installed between two walls and sealed using insulation sealing components. This provides insulation and waterproofing capabilities while ensuring normal expansion and contraction of the expansion joint, resulting in a long service life. The two walls can be insulated and decorated as a whole; the expansion joint insulation is then applied after the overall construction is completed, facilitating the construction process. The internal filling cavity support and connecting bridge securely fix both ends of the insulation layer, ensuring reliable connection. The wire mesh and external filling cavity support enhance the stability of the protective layer installation, and the L-shaped connector further improves the stability of the protective layer installation, guaranteeing the overall structure's service life. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] In the diagram: 1. Wall; 2. Expansion joint; 3. Rock wool board; 4. Thermal insulation sealing component; 5. Waterproof layer; 10. Cast-in-place concrete wall; 11. Connecting bridge; 12. Inner filling cavity support; 13. Insulation layer; 14. Protective layer; 15. Finishing layer; 16. Extrusion section; 17. Wire mesh; 18. Outer filling cavity support; 19. L-shaped connector; 40. Stainless steel plate; 41. Thermal insulation rock wool; 42. Cover plate. Detailed Implementation
[0014] The present invention will be further described below with reference to the accompanying drawings:
[0015] like Figure 1 The diagram shows an integrated thermal insulation expansion joint structure, comprising two walls 1 spaced apart and an expansion joint 2 between the two walls 1. The wall 1 includes a cast-in-place concrete wall 10, a connecting bridge 11 disposed within the cast-in-place concrete wall 10, an inner filling cavity support 12 disposed within the cast-in-place concrete wall 10, an insulation layer 13 disposed outside the cast-in-place concrete wall 10, a protective layer 14 disposed outside the insulation layer 13, and a finishing layer 15 disposed outside the protective layer 14. One end of the connecting bridge 11 passes through the insulation layer 13 and fixes the insulation layer 13 to the outside of the cast-in-place concrete wall 10. One end of the inner filling cavity support 12 is fixedly connected to the insulation layer 13.
[0016] The insulation layer 13 is a honeycomb closed-cell composite insulation board. The inner cavity support 12 is cast within the cast-in-place concrete wall 10, with one end of the support 12 flush with the outer surface of the wall. Fastening screws are installed on the exposed end of the support 12 to secure the inner surface of the insulation layer 13. A connecting portion is provided at the end of the support 12, and a detachable pressing portion 16 is installed on this portion. The pressing portion 16 presses and fixes the insulation layer 13 to the outside of the cast-in-place concrete wall 10, ensuring a stable and reliable installation of the insulation layer 13 on the outside of the wall.
[0017] The protective layer 14 is a cement mortar coating applied to the outside of the insulation layer 13. A wire mesh 17 is installed inside the protective layer 14, and multiple external filling cavity supports 18 are mounted on the wire mesh 17. One end of each external filling cavity support 18 is fixed to the insulation layer 13 with fasteners, ensuring a secure connection between the protective layer 14 and the insulation layer 13. To further improve the reliability of the connection of the protective layer 14, an L-shaped connector 19 is installed inside the protective layer 14. One end of the L-shaped connector 19 passes through the insulation layer 13 and is fixedly cast into the cast-in-place concrete wall 10. The other end of the L-shaped connector 19 is fixedly connected to the wire mesh 17.
[0018] Rock wool board 3 is installed inside expansion joint 2, and thermal insulation sealing component 4 is installed at the ends of rock wool board 3. The two ends of thermal insulation sealing component 4 are respectively connected to the two walls 1. Thermal insulation sealing component 4 includes a stainless steel plate 40 wrapped between rock wool board 3 and the two walls 1, thermal insulation rock wool 41 filled within the stainless steel plate 40, and a cover plate 42 located outside the thermal insulation rock wool 41. The two ends of cover plate 42 are fixedly connected to the two ends of stainless steel plate 40. The thickness of stainless steel plate 40 is 0.5mm, and the thickness of thermal insulation rock wool 41 is 50mm. A waterproof layer 5 is provided between stainless steel plate 40, the walls 1, and rock wool board 3. The waterproof layer 5 can be a protective coating or a waterproof membrane to improve the waterproofing ability at the joint. The two ends of stainless steel plate 40 and cover plate 42 are fixedly installed on the walls 1 using fasteners.
[0019] The above embodiments are merely illustrative of the concept and implementation of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical solutions without substantial changes are still within the scope of protection.
Claims
1. A thermal insulation integrated expansion joint structure, comprising two walls spaced apart and an expansion joint between the two walls, characterized in that: The wall includes a cast-in-place concrete wall, a connecting bridge installed within the cast-in-place concrete wall, an inner filling cavity support installed within the cast-in-place concrete wall, an insulation layer installed on the outside of the cast-in-place concrete wall, a protective layer installed on the outside of the insulation layer, and a finishing layer installed on the outside of the protective layer. One end of the connecting bridge passes through the insulation layer and fixes the insulation layer to the outside of the cast-in-place concrete wall. One end of the inner filling cavity support is fixedly connected to the insulation layer. Rock wool boards are installed in the expansion joints, and insulation sealing components are installed at the ends of the rock wool boards. The two ends of the insulation sealing components are respectively connected to the two walls.
2. The integrated thermal insulation expansion joint structure according to claim 1, characterized in that: The thermal insulation sealing component includes a stainless steel plate wrapped between the rock wool board and the two walls, thermal insulation rock wool filled in the stainless steel plate, and a cover plate disposed on the outside of the thermal insulation rock wool, with both ends of the cover plate fixedly connected to both ends of the stainless steel plate.
3. The integrated thermal insulation expansion joint structure according to claim 1 or 2, characterized in that: A wire mesh is installed inside the protective layer, and multiple external filling cavity supports are installed on the wire mesh. One end of each external filling cavity support is fixedly installed on the insulation layer.
4. The integrated thermal insulation expansion joint structure according to claim 3, characterized in that: An L-shaped connector is installed inside the protective layer, with one end of the L-shaped connector passing through the insulation layer and fixedly installed inside the cast-in-place concrete wall.
5. The integrated thermal insulation expansion joint structure according to claim 1 or 4, characterized in that: A connecting part is provided at the end of the inner filling cavity support, and an extrusion part is detachably installed on the connecting part. The extrusion part extrudes and fixes the insulation layer to the outside of the cast-in-place concrete wall.
6. The integrated thermal insulation expansion joint structure according to claim 2, characterized in that: A waterproof layer is provided between the stainless steel plate and the wall.