Publications de Mark Anthony Treacy

Action effects in post-tensioned concrete box-girder bridges obtained from high-frequency monitoring

2015

A direct monitoring approach for the fatigue safety verification of construction joint details in an existing post-tensioned concrete box-girder bridge

To date, there have been few reports of fatigue problems in medium-span reinforced or prestressed concrete road bridges, primarily due to the high ratio of the dead load to live load in such structures. Where fatigue problems have arisen, they have general ...

Elsevier Sci Ltd2015

Effect on Bridge Load Effects of Vehicle Transverse In-Lane Position: A Case Study

Eugen Brühwiler, Mark Anthony Treacy

This paper presents an investigation of the influence of vehicle transverse in-lane position on bridge traffic load effects. To analyze the influence, both finite-element analysis and statistical analysis methods are used, and various technical aspects are ...

American Society of Civil Engineers2015

The use of monitored data in the verification of structural and fatigue safety of existing post-tensioned concrete highway bridges

Mark Anthony Treacy

EPFL2014

Monitoring of traffic action local effects in highway bridge deck slabs and the influence of measurement duration on extreme value estimates

Eugen Brühwiler, Mark Anthony Treacy

In recent years, monitoring has offered a viable complement or even alternative to traditional analytical safety verification approaches. However, there still remains a lack of guidance for the use of monitored data in safety verification work. Limited res ...

Taylor & Francis2014

Are current bridge load modelling techniques realistic for existing road bridges?

Eugen Brühwiler, Mark Anthony Treacy

Road traffic loading is a highly variable process with a wide range of complex variables to consider. Consequently, various simplifying assumptions are required to efficiently model heavy traffic events for bridge safety verification, which reduce the accu ...

Crc Press-Taylor & Francis Group2014

Updating existing railway bridges based on monitoring data

Eugen Brühwiler, Mark Anthony Treacy, Marina Rocha Pinto Portela Nunes

Due to the important direct and indirect costs of the intervention, more detailed examination methods based on data as obtained from monitoring is suggested. This paper reports on an ongoing study to examine the fatigue safety of one standard bridge type, ...

CRC Press/Balkema2012

A monitoring system for determination of real deck slab behaviour in prestressed box girder bridges

Eugen Brühwiler, Mark Anthony Treacy

Due to ever increasing traffic demands the fatigue safety and service life of the bridges of a railway line in Brazil need to be examined. Conventional assessment methods using load models and approaches as suggested in codes lead to conservative results r ...

CRC Press/Balkema2012

Fatigue load estimation for road bridges using long term WIM monitoring

Eugen Brühwiler, Mark Anthony Treacy

As bridges form the keystone of transport networks, their safe operation with minimal maintenance closures is paramount for efficient operation. Yearly increases in the volume of heavy traffic mean a higher number of fatigue damaging load cycles. The study ...

Bérenguer, Christophe; Grall Antoine & Guedes Soares, Carlos2011