SUSTAINABLE BRIDGES PROJECT

Masonry Arch Bridges Subgroup

Sustainable Bridges Project

• Objectives• Members• Work packages• WP2: Survey• WP3-5: Condition Assessment, Monitoring• WP4: Loads, Capacity• WP6: Repair and strengthening• WP7-8: Demonstration, bridge tests• WP9: Dissemination

Objectives

• Increase the transport capacity of existing bridges by allowing axle loads up to 33 tons for freight traffic with moderate speeds

• Increase the residual lifetime of existing bridges with up to 25 %

• Increase the capacity for passenger traffic with low axle loads by increasing the maximum speeds to up to 350 km/hour

• Enhance strengthening and repair systems

Members

• Czech Republic• Denmark• Finland• France• Germany• Norway• Poland• Portugal• Spain• Sweden• Switzerland• United Kingdom

WP1Start up and Classification

WP2Guidance and

Review

WP4Load, Capacity and Resistance

WP6Repair and

Strengthening

WP9Training and

Dissemination

WP7Demonstration, Field testing on

old bridges

WP3Condition

Assessment, Inspection

WP8Demonstration, Monitoring on New Bridges

WP5

Monitoring

Work packages

• 40% of all European bridges is masonry

BRIDGE TYPE/MATERIAL

0

10

20

30

40

50

CONCRETE METALLIC MASONRY COMPOSITE NOTSPECIFIED

PE

RC

EN

T (

%)

• 60% of masonry bridges are over 100 years old

MASONRY BRIDGE AGE

0

10

20

30

40

50

60

70

< 20 YEARS 20-50 YEARS 50-100 YEARS > 100 YEARS

PE

RC

EN

T (

%)

WP2 Survey

WP3-5 Condition Assessment, Monitoring

Acoustic Emssion Technique

University of Salford

Toolbox

(example)

1. Long-term effect of traffic loading on masonry

arches:

• Fatigue limits

• Critical modes of failure

• Effect of deteriorated masonry.

2. Soil-structure interaction.

3. Modelling deteriorated masonry.

4. Probabilistic assessment methods.

WP4 Loads, Capacity

WP6 Repair and strengthening

Glass fibre sheet

Steel studs

FRP reinforcement FRP reinforcement + Radial pinning

WP7-8 Demonstration, bridge tests

WP9Dissemination

Training

23-26 October 2006, Berlin, Germany

Conference

10-12 October 2007 Wroclaw, Poland

Book

Approx. end of 2007