Noise Barrier Absorber With Deformable Squeeze Pads

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Solution Overview

Problem

Existing noise barriers face challenges in providing effective noise insulation for high-speed railway lines due to dynamic stress from trains, requiring high dynamic stability and ease of disassembly, while also being cost-effective and adaptable to various noise and environmental conditions.

Innovation Solution

The use of deformable squeeze pads in the profile of struts between wall modules, which are supported and clamped by the weight of the modules, allows for elastic twisting and vibration decoupling, enabling durable and easily assembled noise barriers with adjustable absorber elements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If screws are used to fasten wall modules to struts, then the wall modules are securely attached, but the screws loosen under dynamic stress from passing trains

Engineering Contradiction:

Improveattachment strengthVSAvoidfastener reliability

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The patent replaces the screw-fastening mechanical system with a friction-based夹紧 mechanism. The wall modules are pressed against the struts with sufficient normal force to create friction that resists dynamic loads from passing trains, eliminating loosening issues associated with threaded fasteners

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces intermediate pressing elements (such as elastomeric pads or spring mechanisms) that transmit the clamping force from the wall modules to the struts. These intermediaries ensure uniform pressure distribution and maintain consistent friction contact under dynamic loading conditions

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If massive concrete noise protection structures are used, then high dynamic stability is achieved, but quick dismantling in case of catastrophe is difficult

Engineering Contradiction:

Improvedynamic stabilityVSAvoiddismantling ease

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The noise barrier is divided into modular wall sections that can be independently assembled and disassembled. Each module can be quickly removed from the struts without specialized tools, enabling rapid dismantling in emergency situations while maintaining structural stability during normal operation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The fastening system transitions from a static permanent connection to a dynamic reversible connection. The friction-based夹紧 mechanism allows modules to be easily installed and removed by applying or releasing normal force, providing both stability during service and ease of dismantling when needed

Inventive Principle:

Principle #15Dynamics

3Ease of manufacture

If riveted and screwed sheet metal structures are used, then assembly is relatively simple, but fatigue strength is low

Engineering Contradiction:

Improveassembly simplicityVSAvoidfatigue strength

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The patent replaces riveted and screwed sheet metal construction with a friction-based夹紧 system that applies compressive force perpendicular to the load direction. This substitution eliminates stress concentration at fastener holes and avoids fatigue failure of threaded connections under cyclic dynamic loading

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 provides enhanced noise insulation, durability, and ease of disassembly, allowing for quick dismantling and adaptation to different noise conditions with standardized components, while reducing stress on fasteners and ensuring effective sound absorption.

Implementation Method 1

deformable squeeze pads which are supported and clamped under the pressure of the wall modules on the profile of the struts

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

elastic twisting and vibration decoupling

Methodology Applied

Scientific EffectVibration: Vibration

Implementation Method 3

a large number of absorber elements are inserted or pushed on the slide-in rail

Methodology Applied

Scientific EffectSound absorption: Acoustic Absorption

Data Source

PatentEP2126218B1Absorber with support profiles

Publication Date: 2012.05.30 BRUNBAUER WOLFGANG

Figure 1~16
Figure 2~11
Figure 3~8

AI summary

Construction, preferably for sound-dampening barriers for traffic routes, having fixed mounted struts (3)provided with a profile and having multiple elongated wall modules (7), each wall module being arranged between two struts (3) and held by the profile of the strut (3). Multiple wall modules (7), abutting each other on the longitudinal sides thereof, form a substantially closed wall. At least one of the wall modules (7) comprises at least one insertion rail (1) which is particularly constructed as a profile rail into which oronto which a plurality of absorber elements (2) are inserted and/or slid on. Deformable squeezing pads (4) are arranged between each pair of wall modules (7), abutting each other on the longitudinal sides thereof, in the area of the profile of the struts, said squeezing pads being supported and clamped to the profile of the struts under the pressure of the wall module (7).