University of Twente Student Theses


Geotechnisch falen: oorzaken en Beheersmaatregelen

Oude Vrielink, M.A. (2010) Geotechnisch falen: oorzaken en Beheersmaatregelen.

[img] PDF
Abstract:The aim of this study was to identify the main causes and controlmeasures of geotechnical failure in the Dutch earthworks-, road- and hydraulic construction (gww) sector into view. The central research question was to what extent the Geo-Impulse program meets these causes and controlmeasures of geotechnical failure. This as the Geo-Impuls organization would like to know where they stand in achieving their goal: halving geotechnical failure in 2015. Preliminary research clarified the characteristics of geotechnical failure. The concepts of quality, failure (and failure costs), geotechnical failure, risk and geotechnical risk are highlighted and aligned. This made it possible to make these concepts more measurable and practical for Geo-Impuls. These concepts have been the starting point for the formation of a research cycle (see figure I). This cycle shows at a glance the phased structure, method and results of this research. In the future, the cycle can be rerun (iteration) with the results of the first research cycle (the results found in this research). With the concepts, the search- and selection phase of the cycle found a large number of case articles, which have been analysed on mentioned causes, effects and controlmeasures of geotechnical failures. Search- and selection structures have been developed to make the results of this investigation as clear and reproducible as possible. Based on the classification method of the CUR (2010), a full picture of all the described geotechnical incidents was obtained. Based on the Cobouw Incidenten Analyse 2010 (Van Staveren, 2010), during the identification- and categorization phase, a data selection model has been developed to extract the information for this research. All 288 identified causes of geotechnical failure, described in the case articles, have been grouped in micro-, meso-, and macro levels. The diversity of these causes have been made more manageable and similar to the Geo-Impuls program by categorizing the causes according to the scientific ‘Failure Cause Mandala’ model, developed by the Japan Science and Technology Agency for structuring their own Failure Knowledge Database (Hatamura, 2005). Too low and distorted numbers of consequences and controlmeasures, identified in the case articles, made it clear that the study has only went further with the numbers causes of geotechnical failure. A reliable qualitative link with the impact (adverse effects resulting from the geotechnical incidents) was not possible. For a quantitative and complete comparison with the Geo-Impuls program, the 288 identified causes have also been categorized among the 38 initially by Geo-Impuls developed project proposals in the categorization-, comparison- and verification & validation phase. The descriptions of the problem solving capacity of each proposal have been used as a guideline for this categorization. Given the current Geo-Impuls program included only 24 of these project proposals in their 12 workgroups, it was possible to quantitatively analyze if significant proposals were missed. Comparison of the Geo-Impuls categorization with the Failure Mandala categorization showed that, quantitatively, project proposal II-13 (Showcase Probabilistisch Plannen) was possibly deficient in the current Geo-Impuls program. The efficiency of the different workgroups and project proposals is however unclear, since it is not clear if the Geo-Impuls goal focuses on halving the numbers or impact of geotechnical incidents. This goal needs to be clarified by Geo-Impuls, before follow-up studies can be carried out and definite conclusions can be drawn. Oorzaken en Beheersmaatregelen bij Geotechnisch Falen M.A. Oude Vrielink September 2011 V | P a g i n a If one looks pure quantitatively at halving the number of geotechnical incidents (as has been done in this research), the relevance of workgroup 4 (Kwaliteitscontrole in de grond gevormde elementen) and 11 (Internationale Samenwerking) towards achieving the Geo-Impuls goal should be reconsidered. With the current program, quantitatively 83% of the 288 identified causes can be tackled. This program is therefore reasonably effective. Some efficacy is concerned. Also, quantitatively, the workgroup budgets should be reconsidered, since the financial correlation between the budgets and percentage workgroup scores is slightly negative.
Item Type:Essay (Master)
Faculty:ET: Engineering Technology
Subject:56 civil engineering
Programme:Construction Management and Engineering MSc (60337)
Link to this item:
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page