Segmented Transparent Inserts with Floating Center Bar
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Solution Overview
Problem
Existing noise protection elements for roads, motorways, and railways face challenges in achieving effective sound absorption while maintaining transparency and durability, with limited space constraints and high demands for weatherproofing, vandalism resistance, and aesthetic considerations.
Innovation Solution
The noise protection element features a large-area insert divided into multiple inserts with a dimensionally stable profile center bar and elastic arrangements, allowing for increased sound absorption area and flexible response to dynamic loads without fatigue, using a floating installation of the profile center bar within the profile frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single large-area transparent insert is used, then transparency is maintained, but sound absorption area is insufficient
Solution Approach 1:
The single large-area transparent insert is divided into multiple smaller inserts (at least two) that are arranged in alignment within the profile frame. This segmentation increases the total edge area available for mounting sound absorption structures while maintaining the overall transparency of the noise protection element, as the gaps between inserts are minimal and the transparent material still allows light passage.
2Stability of the object's composition
If the profile center bar is rigidly connected to the profile frame, then structural stability is improved, but fatigue fractures occur under dynamic loads
Solution Approach 1:
The profile center bar is designed with a floating installation that allows dynamic movement relative to the profile frame. The bar is held in position by elastic arrangements (such as elastic seals or resilient mountings) that enable it to move flexibly in response to dynamic loads from passing trains, preventing stress concentration and fatigue fractures while maintaining adequate positioning for structural stability.
3Reliability
If the profile center bar is floating without connection to the profile frame, then resistance to dynamic loads is improved, but positional stability deteriorates
Solution Approach 1:
Elastic arrangements (such as elastic seals or resilient mountings) serve as intermediaries between the profile center bar and the profile frame. These elastic elements provide gentle restraining forces that maintain the positional stability of the center bar, preventing excessive movement, while still allowing the bar to move flexibly in response to dynamic loads, thus balancing both positional stability and resistance to dynamic loads.
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 configuration enhances sound absorption to meet regulatory limits, maintains transparency, and ensures durability against dynamic loads, particularly in high-stress rail traffic environments, while maintaining an attractive appearance and flexibility.
Implementation Method 1
each with an elastic arrangement, is positioned in a U-shaped receptacle
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a soundproofing element for a noise barrier with a dimensionally stable profile frame (2), with at least one insert (3) made of transparent material held by the profile frame (2) and with a sound absorption structure (4) arranged at the edge of one side of the insert (3), the sound side, which covers the insert (3) on an edge-side, circumferential strip, wherein the edge of the insert (3) is positioned in a U-shaped receptacle (5) of the profile frame (2) by means of an elastic arrangement (6).This sound insulation element is characterized by the fact that at least two inserts (3) held by the profile frame (2) and arranged in alignment with each other in the profile frame (2) are provided, that a dimensionally stable profile center web (10) with two U-shaped recesses (11) directed away from each other is arranged between the two inserts (3), that the adjacent edges of the inserts (3) are positioned in the U-shaped recesses (11) by means of an elastic arrangement (12), that the sound absorption structure (4) also covers the inserts (3) on an edge strip on both sides of the profile center web (10), and that the profile center web (10) is not connected to the profile frame (2).