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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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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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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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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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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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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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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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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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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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Zhang, L. (author), Li, X. (author), Li, D. (author), Zhou, C. (author)
Important engineered slopes are often heavily instrumented and their performance routinely monitored through these instruments. The evaluation of the safety of the slopes based on the monitored information is however a challenge. A systematic method is presented in this paper for evaluating the slope safety by combining multi-source monitoring...
conference paper 2015
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Van der Krogt, M.G. (author), Van den Ham, G.A. (author), Kok, M. (author)
Flow sliding of submerged slopes in front of dikes can affect the reliability of flood defences. The occurrence of flow sliding may result, sometimes with delay, in a failure mode and consequent flooding. The current safety assessment method for flow sliding does not consider the interaction between flow sliding and failure modes which can cause...
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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Wojciechowska, K. (author), Pleijter, G. (author), Zethof, M. (author), Havinga, F.J. (author), Van Haaren, D.H. (author), Ter Horst, W.L.A. (author)
The aim of this article is to present and discuss fragility curves that were derived for numerous dikes in the Netherlands within the Dike Data Service Centre (DDSC) initiative. A fragility curve of a dike is a mapping from the set of loads, acting on the dike, to the set of conditional dike failure probabilities. The DDSC is a platform around a...
conference paper 2015
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Miranda, C. (author), Teixeira, A. (author), Huber, M. (author), Schweckendiek, T. (author)
The traditional Dutch way to deal with piping failure in river dikes is the implementation of piping berms. The disadvantage of such a measure is the required inland space. Relief wells, on the other hand, require less or no inland space representing an attractive alternative solution. The aims of this paper are first, to show how reliability...
conference paper 2015
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Nishimura, S-I. (author), Shibata, T. (author), Shuku, T. (author)
The spatial distribution of the strength inside an earth-fill dam is identified by sounding tests. In this research, the Swedish Weight Sounding (SWS) test is employed, and the spatially high-density test is possible to identify the spatial correlation structure by the SWS. The correlation structure of an earth-fill could be identified...
conference paper 2015
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Huffman, J.C. (author), Martin, J.P. (author), Stuedlein, A.W. (author)
Geotechnical reliability-based limit state design methodologies are rapidly evolving to meet the demands of various applications. However, the accuracy of these new procedures should be independently assessed and improved as new loading test data is made available. This paper focuses on the assessment of two relatively new serviceability limit...
conference paper 2015
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Ching, J. (author), Wu, S.-H (author), Phoon, K.-K. (author)
Due to limited information in site investigation, it is not possible to obtain the actual values for the mean, standard deviation, and scale of fluctuation of a soil property of interest. The deviation between the estimated values and actual values is called the statistical uncertainty. There are two schools of thoughts on how to model the...
conference paper 2015
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Brinkgreve, R.B.J. (author), Post, M. (author)
Displacement-based finite element calculations are primarily used for serviceability limit state (SLS) analysis, but the finite element method also offers possibilities for ultimate limit state (ULS) design in geotechnical engineering. The combined use of SLS and ULS calculations with partial safety factors according to the different design...
conference paper 2015
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