Searched for: subject%3A%22reliability%22
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Pacheco, J. (author), de Brito, J. (author), Chastre, C. (author), Evangelista, L. (author)
This paper investigates whether the model uncertainty of reinforced recycled aggregate concrete (RAC) beams subjected to bending differs from that of reinforced natural aggregate concrete (NAC) beams. An introductory remark concerning the importance of the codification of RAC structural design is made and notions concerning model uncertainties...
conference paper 2017
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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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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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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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Deepthi, D. (author), Sivakumar, B.G.L. (author), Lekshmi, S. (author)
The premature failure of well-designed structures in the field is a problem commonly observed worldwide. These early failures and the deterioration in structural resistance of pavements can be attributed to the loading and external environmental factors, damage and improper maintenance during the design life among other factors. The time...
conference paper 2015
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Kanning, W. (author), Bocovich, C. (author), Schweckendiek, T. (author), Mooney, M.A. (author)
Piping failure of levees is one of the main contributors to flood risk. Piping occurs when the head difference over a levee results in uplift of the inland blanket, followed by backward erosion in the aquifer due to high local flow velocities. Whether piping occurs, highly depends on local geo-hydrological circumstances which are uncertain due...
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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Jonkman, S.N. (author), Schweckendiek, T. (author)
This paper presents and overview of advances in flood risk and levee reliability analysis in the Netherlands. It is described how new safety standards – in the form of a target failure probability – have been derived on the basis of nationwide flood risk assessments which taken into account both economic risk and risk to life. The process for...
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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Oung, O. (author), Brassinga, H. (author)
A feasibility study was carried out on the redesigning of an existing quay wall of a core harbor in the Netherlands, which was more than 45 years old. The geotechnical behavior of the existing quay wall, especially because of its age, as a response to the maximum load change is undoubtedly the uncertain parameter here. The design and redesign...
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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Mathijssen, F.A.J.M. (author), De Jager, R.R. (author), Hooiveld, B.J. (author)
Along the coastline and in particular in the deltaic estuaries of the Netherlands, the occurring of numerous flow slides have been recorded. Analysis of these historical instabilities has resulted in empirical guidelines for verification of occurring of flow slides. The request to tender for the Engineering & Construct project Dredge Sludge...
conference paper 2015
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Papaioannou, I. (author), Straub, D. (author)
In many geotechnical projects, field data is used to determine the soil parameters. In most instances, however, the statistical analysis is performed ad hoc and the spatial distribution of this data is not (expclitly) accounted for. A more formal statistical approach allows to make better use of the data and combine it in a consistent manner...
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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Boulware, L. (author), Rice, J. (author)
It has long been understood that subsurface geology affects internal erosion potential in levee foundations. Geomorphic features associated with fluvial deposition environments are known to concentrate or block seepage, resulting in sand boils and internal erosion. However, incorporating the effects of geomorphic features into either...
conference paper 2015
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Jiang, S. (author), Li, D. (author), Wei, B. (author)
The effect of probability distributions on the slope reliability is highlighted in this study since the lognormal distribution is often used to characterize the variability of soil properties to avoid negative values. A multiple response-surface based MCS method for slope reliability analysis in spatially variable soils is proposed. A...
conference paper 2015
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Miyata, Y. (author), Bathurst, R.J. (author), Otani, Y. (author)
This study examines the load and resistance factor design calibration for the ultimate pullout limit state for steel strip reinforced soil walls (SSWs). The tensile loads and pullout capacities of reinforcement strips that were measured during full-scale tests are compared with predicted (nominal) values using analytical models recommended by...
conference paper 2015
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Romeo, S. (author), Kieffer, D.S. (author), di Matteo, L. (author)
The present work shows and discusses the GBInSAR measurements for the Ingelsberg area, where one of the most dangerous landslide of Salzburg region is located (Bad Hofgastein – Austria). It is a rockfall developing on an area of about 40000 m2 which is characterized by the outcropping of anti-dip stratified green and calc-mica schists. The...
conference paper 2015
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