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Fuzzy comprehensive evaluation model for construction risk analysis in urban subway

International Journal of Modeling, Simulation, and Scientific Computing 2015年第3期6卷 17-34页

作者： Chun-Quan Dai Zeng-Hui Zhao Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation Shandong University of Science and Technology Qingdao 266590 P.R.China State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology Shandong University of Science and Technology Qingdao 266590P.R.China College of Mining and Safety Engineering Shandong University of Science and Technology Qingdao 266590 P.R.China

On the basis of expert questionnaire and the relevant specification,multi-factors influencing weight matrix was constructed by Analytic Hierarchy Process(AHP)improved in transfer matrix algorithm,and influential factors were fuzzy classified to construct the fuzzy evaluation matrix by using trapezoidal fuzzy membership *** evaluation analysis was carried out through multistage fuzzy comprehensive evaluation method,and verified in combination with engineering construction condition of shallow buried tunnel with large span of Zhongshan Park Station in Qingdao Metro,and four kinds of risk control schemes were established and compared on the analysis of tunnel construction *** show that the model was feasible and the improved construction scheme was very effective to reduce the construction risk.

关键词： Urban tunnel construction risk AHP fuzzy evaluation risk control

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A User-Oriented Implementation of risk Breakdown Structure in construction risk Management

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Journal of Civil Engineering and Architecture 2014年第5期8卷 529-537页

作者： Julinda Keci Department of Civil Engineering Epoka University Tirana 1039 Albania

The construction industry works under conditions of uncertainties and risks leading to poor performance, increased cost and time and decreased quality. In these conditions, the dynamic identification and assessment of project risks among a vary range of potential factors is considered of vital importance. The introduction of RBS （risk breakdown structure） as a hierarchically organized depiction of identified risks was considered a suitable tool in risk management, especially in construction, due to its many advantages in synthetic representation and dynamic nature. This paper presents a user-oriented implementation of RBS to assist the project managers in identifying and assessing potential risk factors affecting construction process. The evidential analogies between WBS （work breakdown structure） and RBS are captured and used in the proposed framework which interconnects them into a 2D （two dimensional） matrix used to associate risks to the specific project activities. The proposed framework is applied to a government funded design-bid-build project. The obtained results clearly demonstrate the advantages in identifying the most risky activities, as well as the most important risk factors affecting the whole project.

关键词： construction risk RBS user-oriented approach 2D matrix WBS.

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