Construction method of engineering construction project safety risk evaluation index system

Abstract

The invention provides a construction method of an engineering construction project safety risk evaluation index system. According to the invention, engineering construction project accident data is comprehensively collected, an engineering construction project safety accident case library is constructed, and accident cause factors are extracted from the engineering construction project safety accident case library. On the basis, a statistical method is further utilized to screen accident cause factors, key indexes in the accident cause factors are obtained to serve as risk evaluation indexes, and a network analytic hierarchy process based on the minimum deviation principle and a grey correlation method are adopted to carry out combined weighting on the risk evaluation indexes. The problem of subjective judgment of evaluation personnel is solved, and the problems of uncertainty and fuzziness of evaluation indexes are also solved, so that a representative engineering construction project safety risk evaluation index system is constructed, and the engineering construction project safety risk evaluation index system has important significance for safety risk evaluation of engineering construction projects.

Description

technical field [0001] The invention relates to the technical field of construction project safety risk evaluation, in particular to a method for constructing an engineering construction project safety risk evaluation index system. Background technique [0002] At present, the construction of domestic engineering projects is in the stage of comprehensive promotion, and the construction of engineering projects has the characteristics of large investment, long cycle, many cross-projects, and complex technologies. There are still many uncertain and ambiguous factors in the construction process. Risk factors are not easy to detect, which leads to accidents in engineering construction projects, causing casualties, economic losses and other problems, and brings many negative social impacts. Therefore, it is necessary to evaluate the safety risks of engineering construction projects. [0003] When evaluating the safety risk of engineering construction projects, the key issue is to...

AI Technical Summary

Problems solved by technology

However, this method has a lot of subjectivity in the process of establishing the risk evaluation index system. The combination of the AHP and the entropy method still has a relatively large deviation in determining the weight of each index, which affects the follow-up. The construction of the model and the accuracy of its risk assessment

In order to reduce the deviation, researchers have begun to study the construction of the combination weighting model based on the minimum deviation. However, most of the existing models use the AHP when calculating the subjective weight, and the subsequent objective weight calculation process is different from the subjective weight. The calculation process is completely independent, ignoring the interaction between the indicators, which in turn affects the accuracy of the final weight indicator

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