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Numa Joy Bertola

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Publications associées (36)

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

Mesures de l’évolution des propriétés du CFUP en combinant les émissions acoustiques (passifs) et des ultrasons (actifs)

Eugen Brühwiler, Numa Joy Bertola, Thomas Schumacher

Le composite cimentaire fibré ultra performant (CFUP) est devenu populaire en Suisse pour la conception de structures légères et durables. Les éléments structuraux en CFUP armé sont étanches et ont une grande durabilité. En raison de sa composition unique, ...

2023

Un nouveau pont ferroviaire entièrement en CFUP – Pont de l’Aiguillon

Eugen Brühwiler, Enrique García, Ngoc Thanh Trinh, Numa Joy Bertola

Pont de l'Aiguillon, le premier pont ferroviaire avec une auge et à voie étroite du monde entièrement en composite cimentaire fibré ultra performance (CFUP), selon les connaissances des auteurs, a été réalisé et mis en service en 2021 sur la ligne ferrovia ...

2023

Design and Construction of the "Chaumény" Footbridge in Posttensioned UHPFRC

Eugen Brühwiler, Numa Joy Bertola

In 2020/21, the “Chaumény” footbridge was built in posttensioned UHPFRC over a railway line in the city of Montreux, Switzerland. UHPFRC stands for Ultra High Performance Fiber Reinforced Cementitious composite. UHPFRC shows high resistance both in tension ...

IABSE2022

Experimental investigation of a keying joint cast in UHPFRC between precast UHPFRC bridge elements

Eugen Brühwiler, Enrique García, Ngoc Thanh Trinh, Numa Joy Bertola

Ultra High-Performance Fiber-Reinforced Cementitious Composite (UHPFRC) is increasingly popular for new structural designs thanks to its high resistance both in tension and compression. When UHPFRC is complemented with steel reinforcing bars or prestressin ...

2022

Cost-benefit evaluation of a monitoring system for structural identification of existing bridges

Eugen Brühwiler, Numa Joy Bertola, Imane Bayane

The monitoring of existing infrastructure has the potential to improve structural-condition assessment, leading to better asset management. Monitoring data, collected through load testing, help identify unknown model-parameter values, and this model-updati ...

2022

Engineering of Existing Structures: The Need and Place for Non-destructive Evaluation

Eugen Brühwiler, Numa Joy Bertola, Thomas Schumacher

Structural engineers today are still educated mainly to design new structures. This ignores the fact that structures already exist and need to be maintained. Students are thus often ill-equipped to deal with maintenance and preservation of existing structu ...

2022

Short Span UHPFRC Railway Bridge in Switzerland - From Design to Implementation

Eugen Brühwiler, Enrique García, Ngoc Thanh Trinh, Numa Joy Bertola

This paper presents the design and construction of the Aiguillon railway bridge in Switzerland, one of the first railway bridges completely made of Ultra-High-Performance Fiber-Reinforced Cementitious Composite (UHPFRC). The length and width of the trough ...

IABSE2022

Assessing bridge conditions using visual inspection following a risk-based methodology

Eugen Brühwiler, Numa Joy Bertola

Visual inspection of existing bridges is the main source of information to prioritize mainte- nance. This qualitative examination is thus a critical part of civil infrastructure management. In Switzerland, main inspections are typically made every five yea ...

2022

A methodology to design measurement systems when multiple model classes are plausible

Ian Smith, Numa Joy Bertola, Sai Ganesh Sarvotham Pai

The management of existing civil infrastructure is challenging due to evolving functional requirements, aging and climate change. Civil infrastructure often has hidden reserve capacity because of conservative approaches used in design and during constructi ...

2021

A Review of the Use of UHPFRC in Bridge Rehabilitation and New Construction in Switzerland

Eugen Brühwiler, Emmanuel Denarié, Philippe Schiltz, Numa Joy Bertola

Ultra-High-Performance Fibre Reinforced Cementitious Composite (UHPFRC) provides solutions to enhance existing structures and design innovative new structures. Structural UHPFRC offers 3–5 times higher compressive and tensile strengths than ordinary concre ...

2021

Decision Framework to Balance Environmental, Technical, Logistical, and Economic Criteria When Designing Structures With Reused Components

Numa Joy Bertola, Célia Marine Küpfer, Corentin Jean Dominique Fivet, Jan Friedrich Georg Brütting

The reuse of structural components in new buildings has great potential to reduce the environmental impacts of the construction sector but remains uncommon practice. An obstacle to its wider implementation is the lack of robust assessment methods and decis ...

2021

Assessment of the Environmental Impacts of Bridge Designs Involving UHPFRC

Eugen Brühwiler, Numa Joy Bertola, Célia Marine Küpfer

Ultra-High-Performance Fibre-Reinforced Cementitious Composite (UHPFRC) has been developed to design lightweight structures and enhance existing designs. As the environmental footprint of the construction industry must be significantly reduced, the potenti ...

2021

A Comparison of optimal measurement-system design with engineering judgement for bridge load testing

Ian Smith, Numa Joy Bertola

Due to conservative approaches in construction design and practice, infrastructure often has hidden reserve capacity. When quantified, this reserve has potential to improve decisions related to asset management. Field measurements, collected through load t ...

2021

Risk-based methodology to assess bridge condition based on visual inspection

Eugen Brühwiler, Numa Joy Bertola

The visual inspection of existing infrastructure is a critical step for asset management, as the detection and quantification of damage must be useful to prioritise maintenance. In Switzerland, main inspections are made every five years for all road bridge ...

2021

Measurement-system design for structural identification

Numa Joy Bertola

In developed countries, the management of existing civil infrastructure is challenging due to evolving functional requirements, aging and climate change. Due to conservative approaches in construction design and practice, infrastructure often has hidden re ...

EPFL2020

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