Akademik Veri Yönetim Sistemi
14th International Congress on Advances in Civil Engineering, İstanbul, Türkiye, 6 - 08 Eylül 2021, ss.283-289
Many
infrastructure projects face geotechnical risks which might have devastating
effects on the cost and schedule performance of the projects if not managed
properly. Since infrastructure projects have huge uncertainties in their
nature, consideration of all possible geotechnical conditions becomes more
compelling. Thus, the prioritization of geotechnical risks becomes an important
element of effective risk management in infrastructure projects. To address
this issue, this study aims to evaluate geotechnical risks that are likely to
occur in infrastructure projects by using fuzzy technique for order of
preference by the similarity-to-ideal-solution (TOPSIS), which is one of the
most widely used multi-criteria decision making (MCDM) tools. Cost and schedule
criteria were used to rank the geotechnical risks since they were mainly
considered as main success criteria of projects. To achieve the study objective
literature review was conducted and 27 geotechnical risks were determined.
Then, questionnaire survey was performed with industry professionals from heavy
civil construction sector in Turkey to prioritize predetermined geotechnical
risks. The results indicate that i) soft clays, organic silts, or peat, ii)
slope instability, and iii) settlement in general were the most significant
geotechnical risks in infrastructure projects. Proposed approach can be used in
infrastructure projects dynamically to develop effective risk mitigation
strategies to ensure cost and schedule performance of the projects.