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CEDR SYMPOSIUM MANAGEMENT OF NOISE BARRIERS TO AVOID PROBLEMS IN THE FUTURE

MARCOCCI SÉBASTIENNOISE DIVISIONDEPARTMENT OF TECHNICAL EXPERTISESGENERAL DIRECTORATE OF ROADS AND BUILDINGS - SPW

1. HERITAGE

2. EXPERIENCE IN WALLONIA …• Wallonia ?

900km Highways7000km Regional roads71 000km Local roads

• Questions– Where?– What kind?– Which condition?

3. HOW TO CARACTERISE?• Which tools?

– 1793-5 and 1793-6 : in situ caracterisation– Structural and material inspections– Fast visual checks

• Why?• Goals?

– Define « Health indecator »– Easy and complete tool– Objective analysis

• How to do that?– Development of methodology– Experience of directory in inspection of bridges

4. METHODOLOGY OF INSPECTION • 3 main-documents• 1 report

• From the report to the « Health indicator »

Structural and stability aspects

• Absorbing materials• Sound insulationAcousticalaspects

Settings of elements

• Rust• Gap between elementsVisual aspects

A B C D

• Results– 60km noise barriers

• Question 1 : Health ? • Question 2 : Protection enough ?

5. HOW TO DEAL WITH THE OLD DEVICES?

• Crossing databases

Restore Upgrade

Noise mapsHotspotsNoise barriersdatabase

42% 58%

• Overview– Budgetary needs– Scenario

• 5 years : « A-B » « A »• 10 years : « B » « A »• 15 years : « B-C » « A »• …

€ 0,00€ 2.000.000,00€ 4.000.000,00€ 6.000.000,00€ 8.000.000,00

€ 10.000.000,00€ 12.000.000,00€ 14.000.000,00€ 16.000.000,00

Budget auj Dans 5 ans Dans 10 ans Dans 15 ans Dans 20 ans

AA A-BA A-B BA A-B B B-CA A-B B B-C CTOTAL cumulé

6. HOW TO DEAL WITH THE NEW DEVICES?• Technical requirements• Factory auditing• Verifications

– When?Directlyafterinstallation

Before end of garantyperiod

Periodicalinspection

7. CONCLUSIONS AND FUTURE PERSPECTIVES• Management

– Overview– Restore or upgrade– Health indicator– Budgetary needs

• Verifications• Technical requirements

– Know your past to build the future• Future

– Verifications– In situ measurements