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Holscher, P. (author)Op 1 februari 2016 heb ik een trillingsmeting uitgevoerd aan de fundering van en de bodem rondom een 3 MW windturbine in het Distripark Waddinxveen. De<br/>windsnelheid tijdens de meting was gemiddeld 15 m/s met pieken tot 23 m/s.<br/>Dit rapport beschrijft de meetopstelling, de postprocessing en de bevindingen.<br/>De meetopstelling bestond uit...report 2017
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Holscher, P. (author)Dikes are attractive locations to construct wind turbines. Wind turbines can accentuate the dike as a linear element in the landscape. Dikes are often windy spots, that are accessible for construction and maintenance using the existing work road along the dike. With the construction of wind turbines on a dike,...book chapter 2017
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Hopman, V. (author), Hölscher, P. (author)A test field with 20 cast in-situ piles has been built. Flaws (necks, bulges and cracks) are built in. Existing and newly developed detecting methods have been tested. They show interpretable signals and also some challenges to improve the results. The final phase e.g. excavation of a representative number of piles will lead to final conclusions...conference paper 2015
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Nguyen, T.C. (author), Van Lottum, H. (author), Holscher, P. (author), Van Tol, A.F. (author)Rapid and static load tests were conducted on open-ended and close-ended piles in the Deltares GeoCentriflige. hi flight, a pile was driven into the soil. Both fme-grained sand and silt beds were tested. Both the rapid and static soil resistances o f a close-ended pile were higher than the soil resistance o f an open-end pile in both sand and...conference paper 2012
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Holscher, P. (author), Van Tol, A.F. (author), Huy, N.Q. (author)Centrifiige experiments were carried out to gain insight into the factors that affect the mobilized resistance during rapid load testing on piles in sand. The influence of generated pore water pressure during rapid load tests is shidied, and its effect on the commonly used unloadmg point method to derive the staticpile capacity. This paper...conference paper 2012
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Hölscher, P. (author), Hartman, A.D. (author)For the Delft Cluster 'Railway transition zones and switches' project, extensive measurements are made. The measurements are divided into three types. The short-term measurement of may 2009 is the subject of this report. The long-term and soil investigation measurements are described in other reports. The goal of this report is to make sure that...report 2009
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Hölscher, P. (author), Meijers, P. (author)In het kader van het 6de Europese onderzoeksprogramma is het Innotrack onderzoek uitgevoerd. Door verschillende Europese belanghebbenden is gemeenschappelijk onderzoek gedaan naar kosteneffectieve oplossingen voor spoorwegen. De nadruk lag op innovatieve oplossingen die met een beperkte investering de onderhoudskosten kunnen reduceren. Vanuit...report 2009
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Hölscher, P. (author), Meijers, P. (author)The Dutch rail network is one of the busiest in the world. Structural, partly preventative, maintenance of the rail infrastructure is essential to ensure that such a busy network remains safe and free of faults. A substantial amount of position maintenance is currently necessary for the upkeep of the Dutch rail network and, in comparison with...report 2009
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Hartman, A.D. (author), Hölscher, P. (author)For the Delft Cluster project “Railway Transition zones” extensive field-testing has been performed. Testing took place on the railway track Gouda-Goverwelle (GoGo) on a culvert and on a Switch. Many different parties were involved in the testing and numerous different types of tests were performed. Al the different tests ad up to a large amount...report 2009
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Coelho, B. (author), Priest, J. (author), Holscher, P. (author), Powrie, W. (author)Transitions between railway track on embankments or natural ground and fixed structures such as bridges and culverts often require substantial additional maintenance to preserve line, level and ride quality. This extra maintenance not only increases costs but also causes delays. Despite its importance for railway infrastructure owners, the...conference paper 2009
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Hölscher, P. (author)Achtergrond en probleemstelling: Ondergrondse afvalwaterpersleidingen worden steeds vaker aangelegd met microtunnelling. Hierbij worden vanuit een startschacht achter een boormachine aan buiselementen achter elkaar met vijzels in de grond weggedrukt. Om een grotere afstand te kunnen overbruggen brengt men smering langs de buis aan en plaatst men...report 2008
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Huy, N.Q. (author), Van Tol, A.F. (author), Hölscher, P. (author)In order to improve the interpretation of the quasi-static (e.g. Statnamic) pile load tests, a research project has been started to investigate effects of the loading rate on the bearing capacity of a pile in sand. A series of laboratory tests has been carried out. The testing program consists of a series of triaxial tests for sand and a series...report 2006
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Hölscher, P. (author)In het kader van Delft Cluster wordt overwogen om onderzoek te doen binnen een project "De Betrouwbare Trillingsmaatregel". Om na te gaan of voor dit project draagvlak is in de praktijk en welke onderzoeksvragen voor de praktijk relevant zijn is een marktverkenning uitgevoerd. Op basis van de projecten van de afgelopen jaren is eerst een interne...report 2006
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- Hölscher, P. (author), Pruiksma, J.P. (author) report 2003
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- Hölscher, P. (author), Waarts, P.H. (author) report 2003
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- Wijnants, G.H. (author), Hölscher, P. (author) report 2003
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- Hölscher, P. (author), Wijnants, G.H. (author) report 2003
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- Hölscher, P. (author) report 2003
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- Hölscher, P. (author), Pruiksma, J.P (author) report 2003
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- Hölscher, P. (author) report 2003
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