| In the primary phase, evaluation of the influence of vibration on nearby properties is necessary for the porpuse of evaluation provide anassistant role for the project manager, which is a part of risk evaluation of construction project, namely Construction Vibration Risk Evaluation (CVRE). Previous methods place the emphasis on the quantitative evaluation of the negative effects on structures or occupants, respectively, without comprehensively considering all factors involved from the perspective of risk evaluation. In this paper, a new methodology based on a Fuzzy Logoc is proposed. This method makes use of the knowledge and experience of experts, and is convenient and economical when used for making decisions in primary phase of projects.In the perspective of risk management, this paper analysises the construction vibration risk and divide the risk into vibration induced building risk, settlement induced building risk and vibration indced occupant risk. According to the difination of slide risk, the definition of construction vibration risk is proposed with the comprise of hazard, vulnerability and consequence. Considering all of the risk factors from the vibration source, vibration transimassion, building response to the effect of vibration, this paper establishes the indexing model for CVRE. Based on the proposed CVRE model, the knowledge of construction vibration is collected. Factor Performance Impact Method is used to establish rule base and knowledge base of system, which is tested and adjusted by the questionnaire collected form the experts from in the relative field. Matlab Fuzzy Logic Toolbox is used to build fuzzy inference systems, which is integrated by Simulink. VB-Matlab programming is used to establish the interface of the CVRE expert system.The constrction vibration risk of Durham University’s new library project is evaluated, to provide an example to illustrate the application of the method. The peak paticle velocity in the nearby building is predicted using finit element method. According to the swediss vibration control standard, the construction vibration risk is evaluated using parameter method. The result is compared with the result obtained from proposed method, validating the proposed method. A shell of expert system is proposed which can be used in other problems and fields as an assistant tool. |
