(1 - 20 of 614)

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Polder, R.B. (author), de Rooij, M.R. (author), de Vries, H. (author), Gulikers, J.J.W. (author), TNO Bouw (author)
conference paper 2003
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Sebastian, R. (author), Brouwer, J. (author), TNO Bouw en Ondergrond (author)
conference paper 2009
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Augenbroe, G. (author), de Wit, M.S. (author), TNO Bouw (author)
Expert judgement studies are a relatively new way of quantifying technical uncertainty in engineering design. Unfortunately they can be time-consuming and costly because they require physical meetings between a group of possibly widely dispersed experts.This paper investigates how web-hosted collaboration or `virtual teaming' can be used to...
conference paper 2002
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Schuten, G. (author), Leggedoor, J. (author), Polder, R.B. (author), TNO Bouw (author)
Corrosion of reinforcement in precast concrete ground floor elements containing mixed in chloride can cause considerable damage. This is a major problem in the Netherlands concerning a large number of privately owned houses. Conventional concrete repair is not acceptable because it does not provide sufficient durable safety. Cathodic protection...
conference paper 1999
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van Campen, D.H. (author), Fey, R.H.B. (author), van Liempt, F.P.H. (author), de Kraker, A. (author), TNO Bouw (author)
In recent years a method was developed by the authors for efficient analysis of the long term behaviour of mechanical systems with local nonlinearities under periodic excita-tien. In this method the linear parts of the system are modelled using the finite element method. In order to keep the cpu-time for the nonlinear analyses acceptable, the...
conference paper 1999
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Luscuere, P.G. (author)
Tegenwoordig worden in de meeste ontwikkelde landen Operatie Kamers (OK's) voor chirurgische ingrepen standaard toegepast. De toepassing van zg. 'downflowsystemen' is ca. 20 jaar oud en afgezien van kleine verbeteringen is dit systeem in grote lijnen nog hetzelfde als 20 jaar geleden. De twee meest gebruikelijke systemen maken gebruik van...
conference paper 1996
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Maljaars, J. (author), Steenbergen, H.M.G.M. (author), Stark, J.W.B. (author), Abspoel, R. (author), TNO Bouw (author)
The lateral torsional buckling resistance of girders depends on the support conditions. In floor structures for buildings, coped girders are often used. A numerical model was developed to research the influence of copes on lateral buckling resistance. The model is successfully validated with tests. This paper describes the background of the...
conference paper 2002
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Lu, Y. (author), Xu, J. (author), Weerheijm, J. (author)
This paper presents a numerical modelling study on the simulation of the cracking process and fracture energy in concrete under high strain rate. To capture the stress wave effect and the damage evolution at the meso-length scale, both a homogeneous model with a millimetre-resolution mesh and an explicit heterogeneous mesoscale model with random...
conference paper 2013
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Dekker, R.W.A. (author), Snijder, B.H. (author), Maljaars, J. (author)
Clause 6.2.8 of EN 1993-1-1 covers the design rules on bending-shear resistance, taking presence of shear into account by a reduced yield stress for the shear area. Numerical research on bending-shear interaction by means of the Abaqus Finite Element modelling soft-ware is presented. The numerical model is validated against the experimental...
conference paper 2016
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Rots, J.G. (author), Frissen, C.M. (author), Feenstra, P.H. (author), TNO Bouw (author)
The relevance of computatiOnal fracture mechanics rationalizing design rules for stacked concrete/masonry structures is demonstrated. Interface softening roodels for tension and shear are used to simulate the initiation, propagation and snap-through of cracks and slip planes in these unreinforced structures. Two examples are included, for the...
conference paper 1999
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Bijlaard, F.S.K. (author), TNO Bouw (author)
This paper presents an overview of the structural assessment of existing structures in comparison to that of newly designed structures. The role of measuring geometrical data and testing the material properties is explained. The method provides objective criteria to judge the safety of existing structures.
conference paper 1999
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Peelen, W.H.A. (author), TNO Bouw en Ondergrond (author)
Invoering van AC tractie in Nederland en het bundelen van leidingen in leidingenstraten en -corridors, kan consequenties hebben op de AC en DC beïnvloeding van ondergrondse pijpleidingen, en naar mee op hun duurzaamheid. DC beïnvloeding heeft plaats, omdat het bestaande spoor of andere DC bronnen, lekstromen naar de bodem vertonen. Deze stromen...
conference paper 2006
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de Boer, A. (author), Waarts, P.H. (author), TNO Bouw (author)
Within the use of alternative methods of probabilistic analysis and coming up computers with more CPU-power, today it Is possible within a design office, to analyse structures in a probabilistic way. After a pilot Implementation of some alternative methods in an existing FE-code, some structures are analysed in this way. DependIng on the FE code...
conference paper 1999
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Vrouwenvelder, A.C.W.M. (author), TNO Bouw (author)
A reliability based code calibration procedure is a two step procedure. In the first step target reliabilities are set on the basis of experience or optimisation and in the second step corresponding partial factors and other safety elements (e.g. PSI-values as in Eurocode 1) are derived. This paper illustrates the use of the JCSS Probabilistic...
conference paper 2002
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Hasegawa, T. (author), Kumagai, H. (author), Irino, K. (author), Rots, J.G. (author), Feenstra, P.H. (author)
The paper discusses the finite element simulation with the finite element system DIANA of a large-scale experiment on a reinforced concrete shear wall. The simulation shows that useful information on the failure mode can be obtained from the nonlinear static, and nonlinear transient dynamic analysis
conference paper 1997
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Drechsler, M. (author), de Ridder, H. (author), TNO Bouw en Ondergrond (author)
This paper presents the results of an explorative research into value quantification methods called the Quick Scan. An overview of value quantification methods was needed in order to be able to establish the economically most advantageous tender, which in turn is needed for improvements in the Dutch construction sector. The Quick Scan project...
conference paper 2006
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Lalani, M. (author), Morahan, D.J. (author), van Foeken, R.J. (author), Wardenier, J. (author)
A Joint industry project (JIP) commenced in 1993(1) to develop a design manual for tubular joints which are strengthened or repaired through chord grout-filling. This project has been funded by five oil companies and two regulatory bodies. The project has comprised the conduct of over 150 Stress Concentration Factor (SCF). Further ultimate load...
conference paper 1996
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Scholten, N.P.M. (author), TNO Bouw (author)
Roerige tijden staan de bouw de rest van dit jaar en begin 2002 te wachten. De Eerste Kamer is bijna gereed met de wijziging van de Woningwet inzake evaluatie van het Bouwbesluit en het MDV-project bouwregelgeving. Naar verwachting worden deze wijzigingen in de tweede helft van dit jaar afgekondigd. We mogen tevens nog dit jaar een amvb ...
conference paper 2001
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Frissen, C.M. (author), Schreppers, G.M.A. (author), Bakker, H.L. (author)
A numerical analysis on the strength of placed block revetments in dikes is presented. A finite element model is developped with physical and geometrical nonlinear chararcteristics. The general behaviour of the model is described and explained extensively. A short description of parameter studies is given. The results confirm that clamping...
conference paper 1997
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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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