Connection system between foundation and reinforced concrete base slab with load-free thermal separation
The connection system with point-shaped supports and foam glass insulation addresses insulation material limitations by providing thermal and load separation, ensuring durability and resistance to moisture, chemicals, and rodents, while being easy to install.
Patent Information
- Application Number
- DE202026000069
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-01-08
- Publication Date
- 2026-04-16
- Estimated Expiration
- 2036-01-31
AI Technical Summary
Current insulation materials for foundations, such as XPS, are susceptible to water absorption, flammability, chemical sensitivity, and rodent damage, and traditional lateral insulation methods fail to address these issues at bearing surfaces, while shallow foundations without point and strip loads are not universally applicable.
A connection system using point-shaped supports and load-free insulating bodies, with a base plate acting as a load-bearing diaphragm, incorporates foam glass insulation to provide thermal separation and support, utilizing stainless steel tubes and welded connections for load distribution.
This system ensures clear thermal and load separation, is resistant to moisture and chemicals, rodent-proof, non-combustible, and easy to install, offering a sustainable and flexible support solution.
Smart Images
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Abstract
Description
• Technical area: Connection system between foundation and base plate with thermal separation. • State of the art / Problem: Floor slabs rest on foundations across their entire surface; insulation materials are currently subjected to static loads (XPS = expanded polystyrene); XPS can absorb water under certain circumstances and lose its insulating properties, is not rodent-resistant, is flammable, and is sensitive to many chemicals. Foam glass cannot be used because it is not approved for point and strip loads. The lateral insulation of foundations, which is common practice today, does not prevent this problem because it still exists at the bearing surfaces (underside of the foundation). The only solution currently available is foundations without point and / or strip loads (shallow foundations), but these are not feasible everywhere. • Solution of the invention: Point-shaped supports transfer loads, insulating bodies are load-free for thermal separation, the base plate acts as a load-bearing diaphragm. • Effects / Advantages: Clear separation of load / temperature, sustainable solution, moisture and chemical resistant, rodent resistant, non-combustible, easy installation, flexible support spacing, purely mineral design without plastics, long-lasting effectiveness.
[0001] Exemplary embodiment: Base plate 25 cm waterproof concrete (9), square tube supports (1) 12 cm stainless steel (W 1.4571), head / foot plates (2+3) 25cm x 25cm made of B500B (black-white welded connection (4)) with connecting irons (5) (made of B500B) and hammerheads (6) made of stainless steel (support for necessary concrete cover of the steel plates (2+3)), support spacing 1.5 m, foam glass insulation body (7) load-free (in the tube and all around).
[0002] The exemplary implementation is illustrated using the Fig. 1 to 5 explained. They show: Fig. 1 for the connection system; view in the uninstalled state without showing the foam glass separator (7) Fig. 2 for the cut of the Fig. 1 (outer foam glass body (7) is shown on one side) Fig. 3 for top view of the connection system Fig. 4 for the cut from Fig. 3, but in installed state (foam glass (7), base plate (8) and foundation (8) shown in such a way that the connection system is still recognizable) Fig. 5 for the cut from Fig. 2, but in installed state (foam glass (7), perimeter insulation (10), base plate (9) and foundation (8) shown in such a way that the connection system is still recognizable)
[0003] The figures show the stainless steel tube 1 with the head plate 2 and the base plate 3. The three parts are joined by a black-and-white weld 4 (all around). Inside the stainless steel tube is a foam glass insulation element 7 that does not extend completely to the head plate to prevent damage from the heat during welding. The connecting irons 5 are bolted to the stainless steel hammerheads 6 and welded to the plates 2 and 3 (4). 1 stainless steel tube 2 Head plate 3 Footplate 4 welded joints 5 connecting irons 6 hammerheads 7 Foam glass insulation (external insulation glued to the foundation) 8 Foundation 9 Base plate 10 Perimeter insulation (XPS or foam glass, not part of the invention)