Searched for: author%3A%22Lengkeek%2C+H.J.%22
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Lengkeek, H.J. (author)
The Netherlands is inherently challenged by water, as a large part of the country lies below sea level and several major rivers in North-western Europe cross the country. The most prevalent form of protection from coastal and river floods in the Netherlands includes approximately 22,000 km of earthen dikes, of which 3800 km are primary flood...
doctoral thesis 2022
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Lengkeek, H.J. (author)
book chapter 2022
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Marzouk, I. (author), Tschuchnigg, F. (author), Paduli, F.J. (author), Lengkeek, H.J. (author), Brinkgreve, R.B.J. (author)
Performing numerical analysis successfully depends on several factors. One of the most important factors is determining the constitutive model parameters correctly. It is often the case that these parameters are determined based on limited soil data. Using in-situ tests for determining these parameters has several advantages such as minimal...
conference paper 2022
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Lengkeek, H.J. (author), Brinkgreve, R.B.J. (author)
An updated CPT-based classification system of organic clays and peat is proposed based on an extensive pairwise established database of classification tests and CPT measurements. This new classification system is proposed to supplement the existing dimensionless qt/pa-Rf-chart of Robertson (2010). The Robertson (2010) dimensionless...
conference paper 2022
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Lengkeek, H.J. (author), Brinkgreve, R.B.J. (author)
Various CPT-based correlations exist for the unit weight of natural soils. One such correlation includes organic soils Lengkeek et al. (2018). This correlation is presented as a framework where the coefficients can be optimized and is based on predominantly Class 2 CPT records. This publication uses an expanded database which includes...
conference paper 2022
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Lengkeek, H.J. (author), Jonkman, Sebastiaan N. (author), Kanning, W. (author)
Parameter determination is the first step in geotechnical engineering. Engineers are often confronted with limited data, large variations and different types of tests, both in-situ and laboratory tests. Within this complex setting, Codes require cautious estimates, so called characteristic values, preferable substantiated with observations and...
conference paper 2021
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Breedeveld, J. (author), Zwanenburg, C. (author), Van, M. (author), Lengkeek, H.J. (author)
Levees in the Netherlands have traditionally been constructed from soil. Climate change and land subsidence require heightening and/or reinforcing these existing levees. Traditional reinforcements demand additional space, which in some cases conflicts with existing buildings. Applying sheet pile walls in levees allows for strengthening while...
conference paper 2019
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Lengkeek, H.J. (author), Post, M. (author), Breedeveld, J. (author), Naves, Thomas (author)
Dikes in the Netherlands have traditionally been constructed with soil. Climate change and subsidence requires heightening and or reinforcing these existing dikes. Traditional reinforcements demand additional space, which in some cases conflicts with existing buildings. Applying sheet pile walls in dikes allows for strengthening while minimizing...
conference paper 2019
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Lengkeek, H.J. (author), Naves, Thomas (author), Post, M. (author), Breedeveld, J. (author)
Dikes in the Netherlands have traditionally been constructed with soil. Climate change and sub-sidence requires heightening and or reinforcing of these existing ground dikes. Traditional reinforcements de-mand additional space, which in some cases conflicts with existing buildings. Applying sheet pile walls in dikes allows for strengthening...
conference paper 2019
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Besseling, Floris (author), Lengkeek, H.J. (author), de Waard, Huig (author), Nieuwenhuis, Kees (author)
The Afsluitdijk is one of the Dutch Delta programme landmarks. Afsluitdijk is a 32 km long primary flood defense, separating lake IJsselmeer from the Wadden Sea and protecting large areas of the Netherlands against flooding. Over the period spanning 2018 - 2022 the levee will be upgraded by the consortium Levvel (BAM, Van Oord and Rebel). Ice...
conference paper 2019
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Lengkeek, H.J. (author), de Greef, J. (author), Joosten, Stan (author)
A reliable estimate of the saturated soil weight from CPT analysis can be useful for various purposes. An often used relation that gives a reasonable first approximation is presented by Robertson & Cabal (2010). In The Netherlands very soft and highly organic soils are omnipresent and these types of soil are absent in the aforementioned...
conference paper 2018
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Breedeveld, Joost (author), Post, Mark (author), de Bruijn, Huub (author), Lengkeek, H.J. (author), Naves, Thomas (author)
In Nederland werken Rijk en waterschappen in-tensief samen om via o.a. dijkversterkingen het land te beschermen tegen overstromingen. Binnen het huidige dijkversterkingsprogramma betreft het aantal kilometers te versterken dijk vanwege onvoldoende dijkstabiliteit 287 km, waarvan aan 69.5 km een hoge urgentie is toegekend en opgenomen in de...
journal article 2018
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van Elsäcker, W.A. (author), Besseling, F. (author), Lengkeek, H.J. (author), Brinkgreve, R.B.J. (author), de Gijt, J.G. (author), Jonkman, Sebastiaan N. (author)
Liquefaction induced by earthquakes has shown to have potential devastating influence on seismic performance of anchored quay walls. Therefore, measures to mitigate liquefaction are commonly part of the design of quay walls in<br/>seismically active regions. Such mitigation measures are costly. Moreover, these measures are difficult to implement...
conference paper 2017
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Lengkeek, H.J. (author)
Het boren van tunnels is een 'oude bekende' bouwmethodiek. In het buitenland is hier al veel ervaring mee opgedaan. Het grote voordeel van het boren is de geringe verstoring tijdens de bouwfase. Tot op heden is deze bouwmethodiek alleen toegepast in stevige grondsoorten, zoals rots en harde klei en is er geen ervaring opgedaan met het boren in...
master thesis 1997
Searched for: author%3A%22Lengkeek%2C+H.J.%22
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