low-noise pavements for urban areas - unece.org · federal department of the environment,...
Post on 29-Aug-2019
3 Views
Preview:
TRANSCRIPT
Federal Department of the Environment, Transport, Energy and Communications DETEC
Swiss Federal Office for the EnvironmentNoise Abatement Division
Low-noise pavementsfor urban areas
50th GRB session Sept. 1.-3. 2009 - Geneva
Gregor SchguaninSwiss Federal Office for the EnvironmentNoise abatement divisionCH - 3003 Berne
E-Mail: gregor.schguanin@bafu.admin.ch
223.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
Noise nuisance in Switzerland
Noise is one of the major environmental problems (economically & health)1.3 Mio. persons > IGW in total1.2 Mio. persons > IGW road traffic (16% of population)
=> 85% in urban areas
Motivation
333.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
Noise improvement measuresNoise barriesSound proof windowsNoise reducing pavementsOther measures (vred, traffic management, …)
?
Feasibility ?Appearance ?Acceptance ?
Measures
Standard measurein urban areas
443.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
The challenge1.2 Mio. Pers. > IGW costs of improvement : 1.33 Mia. * External costs: 1.16 Bio. p.a.
Traffic noise impact (2009)Costs in CHF* estimated remaining projects
553.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
Szenario Reduktion 3 dBAGebäude >IGWThe aim: 50 % reduction
0.6 Mio. Pers. > IGWcosts of improvement: 0.67 Mia.*External costs: 0.58 Bio. p.a.
Costs in CHF* estimated remaining projects
663.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
Szenario Reduktion 3 dBAGebäude >IGW
The way to go: - 3 dBA through low-noise technology
773.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
Remaining tasks for GRB…
…quieter vehicles…quieter tyres
=> by establishing effective regulations!
Polluter pays-principle ??
883.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
-6.0
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24Belag
Abw
eich
ung
vom
Mod
ell S
TL-8
6+ [d
BA
]
45-60 km/h
< 45 km/h
1 SPA6 6 SMA8 11 TA16 16 TA10 21 OB 6/11
2 SPA8 7 Monok. 6 12 SMA10 17 OB 22 MR8
3 SPA11 8 AB11 13 SMA6 18 AB16 23 Beton
4 MR6 9 AB10 14 HMT16 19 MR11 24 Pflaster
5 SMA11 10 GA 15 OB 3/6 20 OB6/10
5-6 dBA
+3 dBA
-5 dBA
Spread of acoustic pavement qualityurban
Pavement ratings
Dev
iatio
n fro
m m
odel
Pavement
Concrete
Cobbles
993.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
Long-term behaviour of an urban low-noise pavement
• Initial noisereduction> 3dBA
• Acoustic lifetimeof -1 dBAover > 12 years
Goals:Definition of long-term low-noise pavements
Range for long-term low-noise pavements
Dev
iatio
n fr
om m
odel
STL
86+
[dB
A]
Age of pavement
Research goals
10103.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
Nanosoft test-track in Geneva
• NANOSOFT by COLAS is hot asphalt concrete for application in thin or very thin wearing courses designed to provide a sharp reduction of vehicle noise.
• The trials in place show spectacular results: - 9 dB(A), i.e., noise power is divided by 8.
• Nanosoft noise reduction performance is long-lasting thanks to a convoluted network of micro air voids that reduce clogging. Its mechanical performance levels are equivalent to those of an asphalt concrete in the same category (> to be verified !)
• Nanosoft’s special grading curve provides excellent skid-resistance, thus improving safety for neighboring residents and users.
• NANOSOFT, with a 0/4 mm grading curve, includes a high proportion of small aggregates bound together by Colflex elastomer modified bitumen binder.
• Noise absorption is optimal in thicknesses ranging from 25 and 40 mm.
• It offers excellent rut resistance, even in thin courses.
• NANOSOFT is designed for the construction and renovation of all types of roadways, regardless of traffic levels. It is particularly well suited for city streets and urban freeways.
• It is visually-appealing and provides surface drainability that helps reduce tire water spray in rainy weather.
Nanosoft
11113.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
CPX-Results
-10
-8
-6
-4
-2
0
2
4
0 100 200 300 400 500
Distanz [m]
Abw
. STL
86+
[dB
A]
CPXcars, 50 km/hCPXtrucks, 50 km/h
Teststrecke
Test track Nanosoft 4 Plan-les-Ouates, driving lane south
Ø PW: -9.1 dBØ LKW: -7.0 dB
Δ = 11 dB
Nanosoft
12123.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
65
70
75
80
85
90
95
315
400
500
630
800
1000
1250
1600
2000
2500
3150
4000
5000
Frequenz (Terzbänder) [Hz]
Lf [d
BA
]
B elag vo r/ nach Test st recke, C PX carsB elag vo r/ nach Test st recke, C PX t rucksN anosof t 4 , C PX carsN anosof t 4 , C PX t rucks
Δ = 15 dBfor dominant frequencies
CPX-Frequency-AnalysisNanosoft
13133.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
Further aspectsCompliance with standardsContracts specifications & guaranteesStatic behaviourGripSafetyDrainage capacityAbrasivityMax. lifecycleMin. costsMin. maintenanceMaintenance during winter periodRepairabilityRecycling aspects…
… and noise reducing
=> Success through cooperation !
Outlook
14143.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
The next steps….> broad practical application
> applied research
> improved long-term behaviour
Thank you for your attention!
Do not defrost. Remove fish fingers from packaging and fry on all sides for 5-7 minutes.
15153.9.2009 50th GRB session | Low-noise pavements for urban areasG. Schguanin, FOEN, Noise Abatement Division
Links
• Swiss noise abatement ordinance:http://www.bafu.admin.ch/laerm/01148/index.html?lang=en
• FOEN website BAFU – Noise Abatement Division:http://www.bafu.admin.ch/laerm/index.html?lang=en
• Road Noise guidelines (D/F) Pavement acoustics > Annex 1http://www.bafu.admin.ch/laerm/01148/03448/index.html?lang=de
• Swiss research project‚ low-noise urban pavements:Final report 2007 (D/F):http://www.bafu.admin.ch/publikationen/publikation/00702/index.html?lang=de
Final report 2007 - condensed version (D/F/E):http://www.bafu.admin.ch/publikationen/publikation/00704/index.html?lang=en
top related