Coextruded Separating Plate for Building Joint Sound Insulation
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Solution Overview
Problem
Existing sound-insulating components in building joints, such as stair landings, face challenges in effectively reducing vibration transmission between building parts while maintaining structural stability and cost-effectiveness, often requiring thick construction elements and reinforcement bars that complicate installation and increase production costs.
Innovation Solution
A multi-layer separating plate with coextruded hard outer walls and flexible inner webs, made from materials like hard and soft PVC, decouples sound transmission and building parts, eliminating the need for reinforcement bars and allowing for a narrower, more cost-effective design with improved anchoring and sound insulation through elastomeric bearings and clip connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforcement bars are used to connect building parts, then structural stability is improved, but vibration transmission between building parts increases
Solution Approach 1:
The separating plate is divided into multiple layers with different material properties: hard outer walls for structural stability and a soft intermediate layer for vibration damping. This segmentation allows each layer to perform its specific function independently, resolving the contradiction between strength and vibration isolation.
Solution Approach 2:
The invention uses a composite structure combining hard materials (outer walls) and soft materials (intermediate layer) in a single component. The hard outer walls provide structural stability while the soft intermediate layer dampens vibrations, achieving both requirements simultaneously through material composition.
2Object-affected harmful factors
If a soft intermediate layer is used to dampen vibrations, then vibration transmission is reduced, but the thickness of the building element increases
Solution Approach 1:
The soft damping material is applied locally only where vibration damping is needed (in the intermediate layer between outer walls), while the outer walls maintain their hard, thin structure. This localized application of different material properties achieves vibration damping without unnecessarily increasing overall thickness.
3Strength
If hard plastic outer walls are used, then structural stability is improved, but sound insulation between building parts deteriorates
Solution Approach 1:
The composite structure combines hard outer walls for structural stability with a soft intermediate layer for sound and vibration damping. The hard materials provide the necessary strength while the soft material layer blocks sound transmission and dampens vibrations, resolving the contradiction between structural requirements and acoustic insulation.
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
The solution significantly reduces vibration transmission, enhances soundproofing, simplifies installation, and optimizes handling and static properties, achieving better sound insulation and structural stability with reduced production costs, while ensuring effective force transmission and fire protection.
Implementation Method 1
The reinforcing bars are anchored in the structural element by the soft intermediate layer, which dampens the transmission of vibrations between the outer layers and between the outer layers and the reinforcing bars
Implementation Method 2
An elastomeric bearing arranged in a substantially horizontal section of the partition plate serves to transmit the pressure force between the adjacent parts of the building
Data Source
Figure 1
Figure 2
AI summary
A building element for installation in separation joints of buildings, in particular at stair landings, for sound-insulating and in particular force-transmitting connection of adjacent building parts (A, B), consisting of a separation plate (1) for embedding in the adjacent building parts (A, B), wherein the separation plate has a multi-layered structure of two outer walls (1a, 1b) and at least one further intermediate element (5), wherein the intermediate element (5) consists of a flexible inner web (5) connecting the outer walls (1a, 1b) and wherein the outer walls and the flexible inner web are made of different materials by co-extrusion.