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(1 - 20 of 143)

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Katzenbach, R. (author), Leppla, S. (author), Seip, M. (author)
For all types of construction works the aspects safety, serviceability and sustainability have to be focused during the planning phase, the design phase, the construction phase and in the service phase. Particularly this has to be considered for complex deep foundation systems like the Combined Pile-Raft Foundation (CPRF). The basis for a...
conference paper 2015
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Pot, R. (author), Roelse, F.P. (author), Van der Meer, M.T. (author), Nushi, B.R.I. (author), Nelemans, J.P. (author)
The application of the Observational Method can contribute to an economic construction process and effective geotechnical risk management. Current project management practices and control of construction works lead to unfavourable conditions of its application. Throughout the realization of infrastructure, understanding of project risks and...
conference paper 2015
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Otake, Y. (author), Honjo, Y. (author), Hiramatsu, Y. (author), Lee, K. (author), Kodaka, T. (author)
A design scheme is proposed to evaluate the safety of continuous linear structure i.e. river levee. The scheme is developed to establish a procedure to continuously evaluate the stability failure of embankment during flood runoff by seepage, and to identify locations for reinforcement of river levee. A 20km stretch of a fairly large river...
conference paper 2015
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Galenkamp, H.F. (author), Bosma, C.F. (author)
Designing challenges engineers to develop both economically attractive and safe designs. This might seem a paradox, but with the application of the observational method, wherein safety is checked by real-time monitoring, economic design and safety are united. The observational method is recently successfully applied in the Netherlands during the...
conference paper 2015
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Gao, L. (author), Zhang, L.M. (author), Chen, H.X. (author)
Due to hilly terrain and frequent heavy rainstorms, debris flow is one of the most common and catastrophic hazards in Hong Kong. To mitigate the debris flow risk, prediction of the magnitude and consequence of debris flow is essential. The objective of this paper is to simulate debris flow hazards in a study area in Hong Kong. Assessment of the...
conference paper 2015
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Rijneveld, B. (author), Jacobse, J.A. (author)
A new lifting bridge is being constructed crossing the river Oude Maas in the Rotterdam harbour area in the Netherlands. Since foundation deformations of the main piers have a large influence on the performance of the superstructure, extensive deformation analyses have been performed during the design phase. In order to minimise the risks and...
conference paper 2015
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Zhu, Y. (author), Peng, M. (author), Shi, Z. (author), Zhang, L. (author)
The 2008 Mw 7.9 Wenchuan earthquake triggered at least 257 landslide dams, most of which formed in series along rivers. The failure of an upstream dam could cause the failure of dams downstream one after another. The cascade dam breaching may result in sharp increase of flood and more serious damage downstream. This paper aims to analyze the...
conference paper 2015
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Bles, T. (author), Stoevelaar, R. (author), de Jong, E. (author)
In the Netherlands research has been performed on the Observational Method, aiming at a wider use of the method in the design of underground and infrastructural construction works. This paper summarizes the guideline that was output of the research, providing a clear definition, an overview of obstacles and pre-conditions, practical...
conference paper 2015
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Peters, M.G.J.M. (author), Kleinjan, J.A. (author), Koster, A. (author)
During the last decade, at least eight earthquakes occurred in the Northern Netherlands with a magnitude of 3 or higher on the Richter scale. These earthquakes are not tectonic but induced by natural gas production from the Groningen Gas Field. Before that time there were no earthquakes in Groningen with such magnitudes. Research conducted by...
conference paper 2015
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van Dalen, J.H. (author), Servais, R. (author), Boone, D.C. (author)
The A2 tunnel in Maastricht has been built within a dry building pit with a maximum depth of 22 meters with sheet pile walls, suspended in a cement bentonite trench supported by struts at 2 to 4 levels. Dewatering is done by deepwells. The excavation reaches into Limestone layers so the maximum mobilized passive resistance of the sheet pile wall...
conference paper 2015
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Le Masurier, J. (author)
Geotechnical engineering designs are often predefined before construction commences, in an attempt to eliminate uncertainty. Such predefined design can lead to poor value, either due to waste of resources from over design, when opportunities are missed for optimising the design during construction, or due to the delay and additional cost of...
conference paper 2015
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De Gast, T. (author), Vardon, P.J. (author), Jommi, C. (author), Hicks, M.A. (author)
Regular dyke assessment is part of reducing the risk of flooding in the Netherlands. 18 000 km of dykes are assessed at regular intervals, of which 14 000 km are classified as regional dykes and their main aim is to defend polders from inundating. The methods of assessing regional dykes are strongly inter-twined with the methods of assessing...
conference paper 2015
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Paasche, H. (author)
Geophysical imaging techniques, such as seismic crosshole tomographic methods, provide spatially continuous information about physical parameter variations in the ground. This physical parameter information, e.g., distribution of seismic velocities, is frequently used to estimate spatial distributions of geotechnical target parameters that could...
conference paper 2015
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Nagy, L. (author), Kádár, I. (author)
Shocking media images are broadcast daily about various acts of violence, natural and technological (man-made) “disasters”. Television may present a single fallen tree as the outcome of large-scale storm damage. The capacity to compare the losses incurred by threats and disasters would help us clarify the comparison of common events. However,...
conference paper 2015
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Kádár, I. (author), Nagy, L. (author)
With the prescence of Eurocode 7 standards the reliability-based design appeared and it is still spreading in geotechnics. In geotechnical design it is essential that we know the physical parameters of the soils as accurately and safely as possible. Therefore experiments and series of experiments are carried out and characteristic values are...
conference paper 2015
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Liu, Z. (author), Lacasse, S. (author), Nadim, F. (author), Gilbert, R. (author)
The safe bearing capacity for offshore shallow foundations has been traditionally assessed using working stress design (WSD) methods (e.g. the API RP 2GEO guideline). Other codes of practice such as the ISO standard strive to provide designs achieving a desired target reliability level in the form of the Load and Resistance Factor Design (LRFD)...
conference paper 2015
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Dithinde, M. (author), Retief, J. (author)
Uncertainties are a hall mark of engineering design leading to the development of risk and reliability informed basis for decision making. Accordingly three different but related levels of approach, namely a risk based, a reliability based and a semi-probabilistic approach have been proposed in ISO 2394. However, for code development the semi...
conference paper 2015
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Spruit, R. (author), Van Tol, F. (author), Broere, W. (author)
If a calamity with a retaining wall occurs, the impact on surrounding buildings and infrastructure is at least an order of magnitude more severe than without the calamity. In 2005 and 2006 major leaks in the retaining walls of underground stations in Amsterdam and Rotterdam occurred. After these cases had been thoroughly studied it was concluded...
conference paper 2015
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Danka, J. (author), Zhang, L. (author)
Dike breaching parameters are important to support dike flood risk management, and can be estimated rapidly using empirical models. Due to the lack of dike specific models, sometimes models for man-made dams were used without validation. This paper compares relevant factors of dike, man-made dam and landslide dam breaches. With the aid of two...
conference paper 2015
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Sujitha, S. (author), Datta, S. (author), Babu, G.L.S. (author)
In this paper, a radiological model for the risk assessment is developed for the near surface disposal facilities of Cesium, Strontium and Cobalt. In addition to the time-dependent annual release rate and dose rate of the radionuclides, the risk to the critical individual is also estimated. The results show that the highest value of annual dose...
conference paper 2015
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