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Concept

Highway engineering

Publications associées (16)

Dynamic control strategies for managing pedestrian flows

Nicholas Alan Molyneaux

Pedestrians, like drivers, generally dislike congestion. This is true for most pedestrian environments: trains stations, airports, or shopping malls. Furthermore, pedestrian congestion also influences the attractiveness of public transportation networks. T ...

EPFL2021

Linking trajectory data collected with a swarm of drones to the underlying urban network for macroscopic traffic parameter estimation

Nikolaos Geroliminis, Emmanouil Barmpounakis

Recently, an open-data initiative was announced with one of the most complete datasets to study urban congestion. The pNEUMA dataset consists of more than half a million trajectories in heterogeneous traffic. In order to utilize the dataset for macroscopic ...

2020

A complex networks approach to traffic flow theory: measures and models

Leonardo Bellocchi

In this thesis, we developed a research direction that combines the theoretical concepts of complex networks with practical needs and applications in the field of transportation engineering. As a first objective we analyzed the phenomenon of congestion pr ...

EPFL2020

Measurement, Data Interpretation, and Uncertainty Propagation for Fatigue Assessments of Structures

Ian Smith, Alain Nussbaumer, James-Alexandre Goulet, Romain Pasquier, Claire Acevedo, Luca D'Angelo

Real behavior of existing structures is usually associated with large uncertainty that is often covered by the use of conservative models and code practices for the evaluation of remaining fatigue lives. In order to make better decisions related to retrofi ...

American Society of Civil Engineers2016

Asphalt Mixture with RAP: Mix Design Optimization

André-Gilles Dumont, Nicolas Bueche, Sara Bressi, Michel Pittet

The addition of reclaimed asphalt pavement (RAP) in hot mix asphalt is now common practice in Switzerland. With the increases of RAP content in asphalt mixture, the problematic of the mix design optimization becomes an important issue to be considered. The ...

Springer2016

Assessing the usage and level-of-service of pedestrian facilities in train stations: A Swiss case study

Michel Bierlaire, Flurin Silvan Hänseler, Riccardo Scarinci

A framework for assessing the usage and level-of-service of rail access facilities is presented. It consists of two parts. A dynamic demand estimator allows to obtain time-dependent pedestrian origin-destination demand within walking facilities. Using that ...

Pergamon-Elsevier Science Ltd2016

Multiaxial and variable amplitude fatigue in steel bridges

Cláudio Alexandre Pereira Baptista

Modern bridge construction all over Europe in the last decades, has highlighted the importance of steel solutions for the design of bridges. Steel bridges have become slender and lighter with the generalisation of welded connections. These features increas ...

EPFL2016

GFRP-balsa sandwich bridge deck: Concept, design and experimental validation

Thomas Keller, Julia De Castro San Roman Fest, Michael Osei-Antwi

The concept, design and experimental validation of the new Avançon Bridge in Bex, Switzerland, are described. The lightweight glass fiber-reinforced polymer (GFRP) sandwich bridge deck adhesively bonded to steel girders reduced the traffic disruption perio ...

2014

GFRP-Balsa Sandwich Bridge Deck: Concept, Design, and Experimental Validation

Thomas Keller, Julia De Castro San Roman Fest, Michael Osei-Antwi

The concept, design, and experimental validation of the new Avancon Bridge in Bex, Switzerland, are described. The lightweight glass fiber-reinforced polymer (GFRP) sandwich bridge deck adhesively bonded to steel girders, reduced the traffic disruption per ...

American Society of Civil Engineers2014

The impact of soil properties on the structural integrity of high-fill reinforced concrete culverts

Liang Sun

Reinforced concrete (RC) culverts under high fill have been widely used in the construction of expressways and railways. Based on the results of a field survey, various types of structural damage to RC culverts occur during construction and service periods ...

Elsevier2013

Realistic laboratory curing of bituminous mixtures

André-Gilles Dumont, Michel Pittet, Marc-Antoine Fénart

In order to perform some specific testing, road laboratories apply a preliminary thermal treatment that impacts the asphalt mixture mechanical and intrinsic properties. The current standardisation in Switzerland and in Europe does not sufficiently describe ...

2013

Modeling work zone crash frequency by quantifying measurement errors in work zone length

Mehmet Yildirimoglu

Work zones are temporary traffic control zones that can potentially cause safety problems. Maintaining safety, while implementing necessary changes on roadways, is an important challenge traffic engineers and researchers have to confront. In this study, th ...

Pergamon-Elsevier Science Ltd2013

The effect of variability of urban systems characteristics in the network capacity

Nikolaos Geroliminis, Burak Boyaci

Recent experimental analysis has shown that some types of urban networks exhibit a low scatter reproducible relationship between average network flow and density, known as the macroscopic fundamental diagram (MFD). It has also been shown that heterogeneity ...

Elsevier2012

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

Optical fiber feasibility study in Accelerated Pavement Testing facility

André-Gilles Dumont, Nicolas Bueche, Patrick Rychen

The presented research has been carried out within the European project Intelligent Roads (INTRO). The major objective followed was to assess the potential of optical fiber for pavement monitoring in comparison with classical strain gauges. Thus, both meas ...

2009

ALT-evaluation of high stiffness base layers with high percentages of reclaimed asphalt

Nicolas Bueche

New Road Construction Concepts (NR2C) is a FEHRL-project supported by the European Commission under the Sixth Framework Programme. NR2C develops perspectives and specific innovations, so that long-term visions are linked to short-term action. One of the id ...

2008