Qualitative analysis of construction project risks by using fuzzy set theory

usually risks are the main of failure of the projects in reaching their pre-determined objectives. Risks which affect the projectsd have complicated interactions that lead to internsification of the risks influences. The tr4aditional risk analysis techniques do not take the risk intractions into consideration and subsequently a clear prospect cannot be achieved for project risk analysis and management. the probability and impact of each risk event is also determined based on the opinionbs of the same expetrts . in contrast to the previous works, the likelhood and impact of risks are not defined withcertainty and the uncertainties are considered using set theory. therefore, a more realistic approach and a flexible way to cope with uncertainties is presented. the capabilities of the proposed model is evaluated by its implemetnation on a sample project.

Keywords:

qualitative risk analysis , risk interactions , fuzzy set thory , DEMATEL technique