Reinforced Concrete Slab Connection with Composite Insulation
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Solution Overview
Problem
Existing devices for connecting reinforced concrete slabs to walls or ceilings face challenges in decoupling moment and lateral force carrying capacity, leading to reduced flexibility and increased production complexity, while also experiencing decreased flexural load-bearing capacity with increasing thermal resistance.
Innovation Solution
The use of closed loops made of fiber plastic as tensile reinforcement elements and flexural-compression-shear elements made of ultra-high-strength concrete (UHPFRC) with variable profiles, integrated into the insulating body, allows for improved thermal insulation and adaptability to various geometric conditions with simplified assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the thermal resistance is increased to improve heat insulation, then the thermal insulation effect is improved, but the flexural load-bearing capacity decreases
Solution Approach 1:
The reinforcement structure is segmented into separate functional components: closed loops for moment resistance and bending pressure shear elements for lateral force absorption. This segmentation allows each component to be optimized independently, enabling high thermal resistance with minimal steel while maintaining both flexural and shear capacity.
Solution Approach 2:
The invention uses composite reinforcement systems combining closed loops (for tension) with bending pressure shear elements (for compression and shear). This composite approach allows the structure to achieve high strength-to-area ratio, enabling thin insulating layers without compromising load-bearing capacity.
2Strength
If traditional reinforcement systems are used to maintain load-bearing capacity, then the strength is maintained, but the production complexity increases and flexibility decreases
Solution Approach 1:
The closed loops serve multiple functions simultaneously: they provide tension reinforcement for moment resistance, define the geometry of the insulating body, and enable simple assembly through engagement with the bending pressure shear elements. This multi-functionality reduces the number of separate components needed, simplifying production while maintaining load-bearing capacity.
Solution Approach 2:
The system allows geometric parameters of the closed loops to be dynamically adapted to match different insulating body dimensions and load requirements. The loops can be customized in size and shape without changing the fundamental construction method, providing flexibility across different applications while maintaining simple production processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances thermal insulation, increases flexibility, and reduces production costs by enabling easy adaptation to load-bearing capacity requirements, while minimizing heat loss and energy consumption through the use of high-performance materials like CFRP/GFRP and UHPFRC, which also improves ecological sustainability.
Implementation Method 1
an insulating body (3) for thermal insulation
Implementation Method 2
the reinforcement part (4) consists in the tension zone of closed loops (4') of, for example, fiber plastic
Implementation Method 3
in the bending pressure shear zone of differently profiled elements (4'') of ultra-high-strength concrete (UHPFRC)
Data Source
Figure 1~4
Figure 5
Figure 6~7
AI summary
The invention relates to a device for connecting reinforced concrete slabs (1) to a wall construction or ceiling construction (2) made of reinforced concrete, comprising an insulating body (3) for providing thermal insulation and a reinforcing part, which has closed loops (4') made of fiber plastic as tension reinforcing elements and bending pressure/shear elements (4") having variable profiles made of ultra-high-strength concrete, wherein the horizontally arranged loops are supported in the insulating body between the reinforced concrete slab to be connected and the wall construction or roof construction and the bending pressure/shear elements are integrated into the insulating body.