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Eugen Brühwiler

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Publications associées (297)

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Static behavior of Reinforced UHPFRC beams with thin cover depth

Eugen Brühwiler, Bartlomiej Wojciech Sawicki

Because of its high tensile strength and deformation capacity, UHPFRC (Ultra High Performance Fiber Reinforced Cementitious composite) can theoretically be used without any reinforcement bars or prestressing. However, for more economical design and for rea ...

2019

Selection of informative monitoring techniques for bridge-performance evaluations

Eugen Brühwiler, Numa Joy Bertola

Decisions regarding the management of civil infrastructure are becoming more crucial as a large share of bridges is presently approaching what is often considered to be the end of their theoretical service duration. Evaluating existing structures using a d ...

Trinity College2023

Overpass bridge of the L3378 road near Fulda-Lehnerz First application of UHPFRC in road bridge construction in Germany. Part 1

Eugen Brühwiler

Aging bridges of the German federal road network often cannot be rehabilitated or replaced timely due to insufficient funding and complex regulations of building laws. Consequently, novel building materials and alternative solutions get the opportunity to ...

2018

Transport properties of water and glycol in an ultra high performance fiber reinforced concrete (UHPFRC) under high tensile deformation

Eugen Brühwiler, Emmanuel Denarié

Ultra High Performance Fiber Reinforced Concretes (UHPFRC) present outstanding mechanical properties and a very low permeability. Those characteristics make them very attractive for the rehabilitation of existing structures and the conception of new struct ...

Pergamon-Elsevier Science Ltd2008

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

Structural condition assessment of reinforced-concrete bridges based on acoustic emission and strain measurements

Eugen Brühwiler, Imane Bayane

A reliable novel monitoring approach is developed to assess the structural condition of reinforced-concrete bridge elements. The approach is based on combining acoustic emission technique and strain gauge measurements, and it is illustrated by a case study ...

2020

Towards the use of UHPFRC in railway bridges: the rehabilitation of Buna Bridge

Eugen Brühwiler, Dragan Damjanovic

In the last decade, Ultra High Performance Fibre Reinforced cement-based Composites (UHPFRC) have been increasingly implemented for rehabilitation and strengthening purposes, rendering outstanding results. The ease of application, along with their superior ...

CRC PRESS-TAYLOR & FRANCIS GROUP2019

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

Capillary suction and diffusion model for chloride ingress into concrete

Eugen Brühwiler, David Conciatori, Hamid Sadouki

A numerical approach, named TransChlor, is proposed to simulate transport phenomena of various substances in concrete. This approach is a theoretical model based on finite elements and finite differences methods. The model consists of coupled nonlinear par ...

Pergamon-Elsevier Science Ltd2008

Quantification of the conditional value of SHM data for the fatigue safety evaluation of a road viaduct

Eugen Brühwiler, Imane Bayane

Fatigue safety verification of existing bridges that uses ‘‘re-calculation’’ based on codes, usually results in insufficient fatigue safety, triggering invasive interventions. Instead of “re-calculation”, Structural Health Monitoring (SHM) should be used f ...

2019

Inverse Analysis of R-UHPFRC Beams to Determine the Flexural Response under Service Loading and at Ultimate Resistance

Eugen Brühwiler, Emmanuel Denarié, Bartlomiej Wojciech Sawicki

Ultra high performance fiber reinforced cementitious composites (UHPFRCs) have demonstrated their outstanding efficiency as structural materials. Determination of the bending resistance of members combining UHPFRC with steel reinforcement bars (R-UHPFRC) u ...

2022

CHALLENGES FOR STRAIN HARDENING CEMENTITIOUS COMPOSITES – DEFORMABILITY VERSUS MATRIX DENSITY

Eugen Brühwiler, Emmanuel Denarié

Recently, fiber reinforced cementitious materials with novel properties have been developed. Here, novel properties mean “high tensile strain capacity with strain hardening and multiple fine cracks” and “high durability due to dense matrix with extremely l ...

2007

Modelling of fatigue behaviour of bridge deck slab elements strengthened with reinforced UHPFRC

Eugen Brühwiler, Tohru Makita

With the occurrence of higher and more frequent axle loads on roads, in particular bridge deck slabs are more severely solicitated by fatigue loading. To avoid heavy interventions for strengthening of deck slabs, an improved building material is used, name ...

Crc Press-Taylor & Francis Group2014

Geometrical and material characterisation of quenched and self-tempered steel reinforcement bars

Eugen Brühwiler, Alain Nussbaumer, Marina Rocha Pinto Portela Nunes

Quenched and self-tempered (QST) steel reinforcement bars (rebars) are manufactured by Thermex or Tempcore processes. Characterization studies of QST rebars are mostly limited to reveal the hardened outer layer and some improved mechanical properties compa ...

Asce-Amer Soc Civil Engineers2016

Acoustic emission and ultrasonic testing for fatigue damage detection in a RC bridge deck slab

Eugen Brühwiler, Imane Bayane

There is a significant need to examine precisely the conditions of concrete road bridges because of the increasing traffic and axle loads and the fact that most existing bridges were not designed with respect to fatigue. In-situ investigations are challeng ...

2019

Elastic limit tensile stress of UHPFRC: Method of determination and effect of fiber orientation

Eugen Brühwiler, Emmanuel Denarié, Jian Zhan

This paper discusses the influence of fiber orientation on elastic limit tensile stress of ultra-high performance fiber reinforced cementitious composites (UHPFRC). An original model relating elastic limit tensile stress to fiber orientation is proposed, a ...

2023

Determining structural properties of a prestressed concrete bridge through the combination of static and dynamic load testing

Eugen Brühwiler, Numa Joy Bertola, Yves Sylvain Gilles Reuland

Examining structural safety requires hypotheses on several properties of the bridge structure, such as material properties, boundary conditions, and self-weight. The traditional approach relies on conservative assumptions for each structural property, foll ...

2024

Combined Passive and Active Ultrasonic Stress Wave Monitoring of UHPFRC Properties on a Structural Level

Eugen Brühwiler, Numa Joy Bertola, Thomas Schumacher

Ultra-High-Performance Fiber-Reinforced Cementitious Composite (UHPFRC) is becoming popular in designing lightweight and durable structures. UHPFRC structural elements remain crack-free and waterproof under service conditions, significantly improving durab ...

2023

Experiments on the flexural behavior of full-scale PC box girders with service damage strengthened by prestressed CFRP plates

Eugen Brühwiler

Two full-scale PC box girders with typical damage were derived from an in-situ bridge that was in service about 20 years, to understand the strengthening effects of prestressed CFRP plates for the entire bottom slab, casting of a RC layer in composite acti ...

2023

Modernising a monument: The challenges of strengthening and widening a structurally deficient road bridge under live traffic

Eugen Brühwiler

The historic Port Weir Bridge over the Nidau-Buren Canal in the Canton of Bern, Switzerland, was inaugurated in 1938. This multi-purpose structure serves as an important road bridge, a mechanised weir, a lock for canal boats, as well as a hydroelectric pow ...

Ernst & Sohn Verlag Architektur & Technische Wissenschaften Gmbh & Co Kg2023