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Leonetti, D. (author), Hashemi, B. (author), Allaix, D.L. (author), Maljaars, J. (author)
This paper investigates the differences in the predicted fatigue life of transverse butt weld joints and cover-plated beams considering statistically based fitting methods on fatigue test data and comparing the results with the S-N relation proposed in international standards. The test data fitting are performed by employing the Least Square...
conference paper 2017
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Giezen, C. (author), Mookhoek, S.D. (author), Schelland, M. (author), Paffen, P. (author), Bouman, F.G.M. (author), van Dommelen, A.E. (author), Erkens, S.M.J.G. (author), Hofman, R. (author), Villani, M.M. (author), Bennis, T.A. (author)
conference paper 2017
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Geurts, C.P.W. (author), Bronkhorst, A.J. (author), van Bentum, C.A. (author), Hielema, J. (author)
An investigation is presented to determine the wind loads on external solar blinds on two 60 m high towers. This investigation was performed some years after the construction of the towers, with the sun blinds in place. A combination of wind tunnel tests and full scale measurements was done. The shape of the towers, and the unique design of the...
conference paper 2017
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Dieteren, G. (author), Bigaj-van Vliet, A.J. (author), Yang, Y. (author), Sangers, A. (author)
In-situ load testing of reinforced concrete (RC) structures is often performed to confirm the presence of the required resistance for the intended use (Conformity Load Testing) or to support the assessments of the residual capacity by models (Supplementary Load Testing for Condition Assessment). When performing an in-situ load test, one of the...
conference paper 2017
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van Meerveld, H. (author), Schoenmaker, R. (author), Wessels, J.F.M. (author), Bakker, J. (author)
This paper discusses the development and first testing of a valid, reliable, functional and simple indicator, that represents the long term effect of short term decisions. Such an indicator can assist counteracting short term views in network level asset management decision making. Short-termism or myopia may occur in cases where service level...
conference paper 2017
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Slobbe, A. (author), Allaix, D.L. (author), Yang, Y. (author)
Different analytical models exist to predict the shear strength of reinforced concrete members. Generally, each of these shear strength models consists of a formulation based on certain underlying theory and fitted model coefficients. The model fitting parameters are usually established from the comparison with test data. Hence, the predictive...
conference paper 2017
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Polder, R.B. (author), Boutz, M.M.R. (author), Ottelé, M. (author)
Asset managers would benefit from knowing when to expect corrosion initiation in a particular reinforced concrete structure. However, accepted approaches to test existing structures for the remaining time to corrosion initiation are lacking. This paper proposes such an approach, based on experience in the field and additional considerations....
conference paper 2017
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Nelisse, R.M.L. (author), Vrouwenvelder, A.C.W.M. (author)
Article 13 of the EU Directive on minimum safety requirements for tunnels in the Trans-European Road Network states that a risk analysis, where necessary, shall be carried out. In the Netherlands, the risk of death for road users in a tunnel is calculated with a model for quantitative risk analysis, which is called “QRA-tunnels”. QRA-tunnels is...
conference paper 2017
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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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Voskuilen, J. (author), Gaarkeuken, B. (author), van Vliet, D. (author), Poot, M. (author)
The KGO mixing method was developed 40 years ago. Instead of adding the bitumen at the end of the mixing cycle, the bitumen was poured down first together with the larger aggregates. After mixing the bitumen with the larger aggregates, the reamining aggregates were mixed down. As benefits of the KGO method were mentioned improving the...
conference paper 2017
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Bronkhorst, A.J. (author), Geurts, C.P.W. (author), van Bentum, C.A. (author), van der Knaap, L.P.M. (author)
Wind loads are responsible for a large amount of damage to greenhouses, and are therefore an important factor in the structural design of greenhouses. Previous wind load studies on greenhouses [1-8], have only investigated wind loads on the first 9 roof spans. However, most greenhouses are much larger than 10 roof spans. For these larger...
conference paper 2017
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van Breugel, K. (author), Polder, R.B. (author), de Rooij, M.R. (author)
For many concrete infrastructural works a service life of 80, 100 or 200 years is required. To convince owners and authorities that these requirements can be met probability-based models for service life predictions have been developed. These models are based on theoretical and experimental laboratory studies. Many of these models focus on the...
conference paper 2017
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Dekker, R.W.A. (author), Snijder, H.H. (author), Maljaars, J. (author)
Clause 6.2 of EN 1993-1-1 covers the cross-sectional resistance of steel sections. The bending-shear interaction design rules for I-shaped cross-sections make use of a reduced yield stress for the web area. On this basis, a reduced design plastic resistance moment allowing for the shear force is presented. The effect of shear on the bending...
conference paper 2017
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Peelen, W.H.A. (author), Vervuurt, A.H.J.M. (author)
Modular expansion joints constitute a substantial part of direct and indirect costs of bridge maintenance. Joint condition assessments can be improved to predict or detect damages earlier. In this way the probability for consequential damages such as emergency repair and a shortened lifespan is reduced. Maintenance can be planned well in advance...
conference paper 2017
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Holthuizen, P.E. (author), Çopuroglu, O. (author), Polder, R.B. (author)
In the Netherlands civil engineering structures, such as overpasses, bridges and tunnels are generally built using blast furnace slag cement (BFSC, CEM III/B) concrete, because of its high resistance against chloride penetration. Although the Dutch experience regarding durability performance of BFSC concrete has been remarkably good, its...
conference paper 2017
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Geurts, C.P.W. (author), Bronkhorst, A.J. (author), van Bentum, C.A. (author)
The wind loads on solar energy systems are crucial for the engineering of the panels, substructure and fixings. There is a demand for aesthetically more acceptable solutions such as frameless solar systems. For these frameless systems, the wind loads are carried by the panels themselves. Combined with the increase in the size of photovoltaic (PV...
conference paper 2017
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Abspoel, L.M. (author), Wessels, J.F.M. (author), Turk, M. (author), Bailey, H. (author), Hannah, A. (author), O'Connor, A. (author), Leahy, C. (author)
Quality control during the construction process is one of the determining factors that governs the service life of an asphalt road. In CONSISTEND a predictive tool is developed that objectively determines the effect of quality control during the construction processes on the life span of surface courses of asphalt roads. The tool predicts the...
conference paper 2017
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van der Wiel, W.D. (author), Klanker, G. (author), Klerk, W.J. (author), Persoon, E. (author), Wessels, J. (author), de Wit, A. (author)
Many of the Dutch movable hydraulic structures are exceeding lifetime expectancy based on the then-current standards and regulations. Also signs of ageing become apparent, regulations (e.g. about structural safety) get more and more strict and functional requirements have often increased over time due to climate change and socio-economic...
conference paper 2017
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Kleijn van Willigen, G. (author), Mohrmann, J.F.W. (author), Roelen, A.L.C. (author), van Meerveld, H. (author)
Risk Based Asset Management (RBAM), or rather Asset Management based on both a perfor-mance requirement and a supporting Risk Analysis, is a beneficial Asset Management methodology for a number of industries, including the Asset Management of infrastructure. In the implementation of RBAM at Rijkswaterstaat a number of challenges have been faced....
conference paper 2017
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Polder, R.B. (author), Geiker, M.R. (author)
Many repairs of chloride induced corrosion in practice fail within 10 years due to chloride remaining after cleaning the steel, causing corrosion re-activation. An improvement of conventional repair was invented, Electro Active Repair, that electrochemically removes chlorides. After concrete removal, a temporary electrolyte and anode are...
conference paper 2017
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