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Argyroudis, S.A. (author), Fotopoulou, S. (author), Karafagka, S. (author), Pitilakis, K. (author), Selva, J. (author), Salzano, E. (author), Basco, A. (author), Crowley, H. (author), Rodrigues, D. (author), Matos, J.P. (author), Schleiss, A.J. (author), Courage, W. (author), Reinders, J. (author), Cheng, Y. (author), Akkar, S. (author), Uckan, E. (author), Erdik, M. (author), Giardini, D. (author), Mignan, A. (author)
Recent natural disasters that seriously affected critical infrastructure (CI) with significant socio-economic losses and impact revealed the need for the development of reliable methodologies for vulnerability and risk assessment. In this paper, a risk-based multi-level stress test method that has been recently proposed, aimed at enhancing...
article 2020
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Sousa, H. (author), Slobbe, A. (author), Courage, W. (author)
Over the past century, European countries have developed mature and extensive transportation infrastructure networks, in which bridges play a vital role. Their design is increasingly influenced by life-cycle multi-objective performance criteria, which comprise economic, environmental and social factors. Hence, the emphasis has shifted from new...
conference paper 2019
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Rozsas, A. (author), Slobbe, A.T. (author), Allaix, D.L. (author), Courage, W.M.G. (author), Bigaj van Vliet, A.J. (author), Burggraaf, H.G. (author)
The objective of this paper is to explore the added value of full-probabilistic nonlinear finite
bookPart 2019
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Slobbe, A. (author), Allaix, D.L. (author), Courage, W. (author), van Vliet, A.B. (author)
The accuracy of predictions of structural behavior by finite element analysis strongly depends on the formulation of the numerical model. Depending on the problem at hand, the analyst has to make a number of choices, which influence the numerical results to a greater or lesser extent. For complex cases, e.g. existing reinforced concrete...
conference paper 2017
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Kosgodagan-Dalla Torre, A. (author), Yeung, T.G. (author), Morales-Nápoles, O. (author), Castanier, B. (author), Maljaars, J. (author), Courage, W. (author)
Modeling the stochastic evolution of a large-scale fleet or network generally proves to be challenging. This difficulty may be compounded through complex relationships between various assets in the network. Although a great number of probabilistic graph-based models (e.g., Bayesian networks) have been developed recently to describe the behavior...
article 2017
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Abspoel, L.M. (author), Courage, W.M.G. (author), van den Broeck, W. (author), Kruse, H. (author)
Pipeline networks for gas and water are the lifelines of our society. Their presence and correct functioning translates in benefits and any disruption, malfunctioning or ruptures represent hazards for the community. Most pipelines are buried, which impedes direct monitoring of the structural reliability of the networks. The behavior of the soil...
conference paper 2017
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Courage, W.M.G. (author), Dragt, R.C. (author), Pijpers, R.J.M. (author), Maljaars, J. (author), Walters, C.L. (author), van der Weijde, G.D. (author)
design driver for Offshore Wind Turbine (OWT) substructures and also has an im-pact on operational costs. During service life, inspections are required to detect fa-tigue cracks at an early stage. These cracks may need to be repaired. The costs of in-spections and repair are high for offshore structures. To reduce the cost of energy, it is...
article 2016
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Polder, R.B. (author), Pan, Y. (author), Courage, W.M.G. (author), Peelen, W.H.A. (author)
Maintenance costs of reinforced concrete infrastructure (bridges, tunnels, harbours, parking
article 2016
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Kosgodagan, A. (author), Morales-Napoles, O. (author), Maljaars, J. (author), Courage, W.M.G. (author)
Markov-based models for predicting deterioration for civil infrastructures are widely recognized as suitable tools addressing this mechanism. The objective of this paper is to provide insights regarding a network of orthotropic steel bridges in terms of degradation. Consequently, a model combining a dynamic Bayesian network and a Markov chain is...
conference paper 2016
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Attema, T. (author), Courage, W.M.G. (author), Maljaars, J. (author), van Meerveld, H. (author), Paulissen, J.H. (author), Pijpers, R.J.M. (author), Slobbe, A.T. (author)
This paper presents a monitoring and modelling methodology to assess the current and future conditions of steel bridges subjected to fatigue cracking. Steel bridges are subjected to fatigue cracking as a result of fluctuating stresses caused by the crossing of heavy vehicles. Specifically for orthotropic steel bridge decks, fatigue cracking is...
conference paper 2015
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Vervuurt, A. (author), Courage, W. (author), Steenbergen, R. (author)
For the assessment of the in situ compressive strength in structures and precast concrete components EN 13791 applies. Among others, this standard may be adopted when doubt arises about the compressive strength in the structure. However, for assessing the structural safety of existing structures of many years of age, the method given in EN 13791...
conference paper 2013
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Zouch, M. (author), Courage, W. (author), Nápoles, O.M. (author)
We present a framework to investigate new monitoring techniques for infrastructures and assess their potential value for the network management. This framework is based on a social cost benefit analysis tool that aims to (i) assist decision makers in selecting and developing cost-effective new monitoring techniques and (ii) provide managers with...
article 2013
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Vervuurt, A.H.J.M. (author), Courage, W.M.G. (author), Steenbergen, R.D.J.M. (author)
Voor de bepaling van het dwarskrachtdraagvermogen van constructies is de betonsterkte één van de bepalende parameters. Die neemt onder invloed van doorgaande hydratatie in de tijd sterk toe. Bij de beoordeling van kunstwerken kan gebruik worden gemaakt van de feitelijk aanwezige sterkte. Hierdoor kunnen kunstwerken worden goedgekeurd die in...
article 2012
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van der Klis, H. (author), Courage, W.M.G. (author), Diermanse, F.L.M. (author), TNO Bouw en Ondergrond (author)
article 2005
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Courage, W.M.G. (author), Koopman, A. (author), TNO Bouw (author)
Voor de projectorganisatie HSL Zuid zijn in het verleden door TNO Bouwen Holland Railconsult trillingsprognoses gemaakt van treinpassages in geboorde spoortunnels. Beide bureaus gebruikten hiervoor modelleringen van het treinbaan-systeem en van de tunnel en de bodem die nog maar in zeer beperkte mate, en zeker niet voor deze specifieke...
report 2001
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Esposito, G. (author), Courage, W.M.G. (author), van Foeken, R.J. (author)
The Statnamic method is an increasingly popular technique to carry out loading tests on cast in-situ piles. The method bas proved to be a cost-effective alternative to a static loading test. As-sociated to Unloading Point Method (UPM) and to automatie signal matching, the Statnamic testing technique provides an estimation of the static load...
conference paper 2000
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Pandohi-Mishre, P.R. (author), Courage, W.M.G. (author), Gresnigt, A.M. (author)
The behaviour under earthquake loading of an LNG (liquefied natura) gas)-tank with a diameter of 75 meters and a height of 32 meters has been studied analytically and numerically. Design rules for achieving a safe design, provided by Eurocode 8 'Design of structures for earthquake resistance - Part 4 : silos, tanks and pipelines' (ENV 1998-4)...
conference paper 2000
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van Foeken, R.J. (author), Middendorp, P. (author), Courage, W.M.G. (author), TNO Bouw (author)
The Unloading Point Method (UPM) has become the standard method of analy-sis for Statnamic testing. For long piles with wave numbers (Nw) less than 12, however, the method becomes less accurate because of stress wave phenomena (concrete piles longer than 35 m or steel piles longer than 40 m). In these cases, the signal matching stress wave...
conference paper 1998
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Courage, W.M.G. (author), Soetens, F. (author), Noordzij, R. (author), Drabbels, J. (author), TNO Bouw (author)
This paper deals with the design and manufacturing of aluminium overhead sign structures. These gantries are built up by using two X-shaped column frames connected by a triangular space frame girder. Slenderness and a low solidity ratio were objectives in the architectonic design. Braces and main chords of the triangular space frame are made of...
conference paper 1998
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Courage, W.M.G. (author), van Foeken, R.J. (author)
so-called direct and indirect methods. The direct methods (CASE method, TNO method) yield straight forward real time results. The more accurate indirect methods (CAPWAP, TNOWAVE) require signal matching. As a result the load displacement diagram is obtained and the bearing capacity can be predicted. The interpretation with the indirect methods...
conference paper 1996
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