Guard Rail Noise Panel with Stretch-Metal Netting
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Solution Overview
Problem
Existing sound absorbing guard rail systems with noise-reducing measures, such as those made of aluminum or transparent materials, are brittle and prone to disintegration during vehicle impacts, posing a risk of severe personal injuries.
Innovation Solution
A sound absorbing guard rail system featuring noise absorbing panels encased in energy absorbing stretch-metal netting, which provides enhanced impact absorption and prevents disintegration, using materials like mineral wool fibre boards and galvanized steel netting that can deform to absorb energy and maintain structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If noise absorbing panels are made of aluminum or transparent materials, then noise reduction is achieved, but the panels become brittle and prone to disintegration during vehicle impacts
Solution Approach 1:
The patent uses composite materials by combining noise-absorbing material (mineral wool, foam, or rubber) with an energy-absorbing metal mesh structure. This composite construction allows the panel to maintain noise reduction properties while the metal mesh provides impact resistance and prevents disintegration during vehicle collisions.
Solution Approach 2:
The patent employs a flexible metal mesh structure that can deform under impact forces. The mesh acts as a flexible shell that absorbs impact energy through deformation while containing the noise-absorbing material, preventing it from disintegrating and reducing the risk of flying objects during collisions.
2Reliability
If traditional guard rails are made to withstand impact, then safety is improved, but they cannot effectively absorb noise
Solution Approach 1:
The patent merges two separate functions into a single integrated structure: noise absorption and impact resistance. The noise-absorbing material is embedded within the energy-absorbing metal mesh, creating a unified panel that simultaneously reduces noise levels and withstands vehicle impacts without requiring separate components.
Solution Approach 2:
The guard rail panel is designed with multi-functionality, serving both as a noise barrier and an impact-resistant structure. The metal mesh provides structural integrity and impact absorption, while the embedded noise-absorbing material delivers acoustic attenuation, making the single panel perform multiple protective functions.
3Object-affected harmful factors
If noise absorbing panels are provided behind guard rail beams, then noise reduction is achieved, but the panels may disintegrate and cause severe personal injuries
Solution Approach 1:
The metal mesh acts as a flexible containment shell that holds the noise-absorbing material together during impact. When struck by a vehicle, the mesh deforms to absorb energy while maintaining its structural integrity, preventing the noise-absorbing material from breaking apart and creating flying objects that could injure occupants.
Solution Approach 2:
The metal mesh structure provides beforehand cushioning by being positioned between the external impact force and the noise-absorbing material. It absorbs and distributes impact forces before they can reach the more fragile noise-absorbing material, preventing its disintegration and the formation of hazardous flying fragments.
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 system effectively absorbs noise and impacts without disintegrating, ensuring road safety by combining the noise absorption capabilities of mineral wool with the energy absorption of stretch-metal netting, while also being weather-resistant and cost-effective.
Implementation Method 1
the noise absorbing panel is contained in an energy absorbing material, i.e. said stretch-metal netting whereby an improved noise absorbing panel in a guard rail system may be achieved, which also meets the requirements concerning impact absorption and avoids disintegration at an impact with a vehicle
Implementation Method 2
The noise absorbing material is preferably a mineral wool fibre board, which has very good noise-absorbing characteristics
Data Source
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AI summary
The present invention concerns a sound absorbing guard rail system for installation at a lateral or median side of a road, said guard rail system comprises a series of supporting posts, that are preferably vertically oriented, at least one noise absorbing panel that can be mounted to said supporting posts, and a series of longitudinal guard rails mounted on the side of the guard rail system facing the road, wherein said noise absorbing panel comprises a noise absorbing material which is encased in an energy absorbing material provided with openings.