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Study On The Integrated Risk Management Theory And Methods Of Construction Project

Posted on:2009-10-27Degree:DoctorType:Dissertation
Country:ChinaCandidate:Y L GaoFull Text:PDF
GTID:1119360272970192Subject:Civil Engineering Management
Abstract/Summary:PDF Full Text Request
Along with the change of economic structure, severity of market competition, investment increasing and production cycle becoming longer, more risks are encountered during project construction process and the project risk management becomes more complex. However, the research only stays on common process and single analysis model of risk management. On the other hand, there are many participants exist and they carry through risk management by themselves. Thus the project risk management is discrete and the integrated risk management system is absent. It is very important to bring forward the theory and methods of integrated risk management and this paper studies on this problem.The integrated risk management theory frame is presented. The integration of objectives is center and the information system is tool of theory model. The integration of total lifecycle, process and methods and organization is content of theory model. The total lifecycle includes four phases and they are decision-making phase, design phase, construction phase and trial operation phase. The integrated risk management is continuous, dynamic during the total lifecycle.Based on the theory model, the integration of objectives, process and methods, organization and information system are studied.On the integration of objectives, the multi-objective fuzzy trade-off optimization method under uncertainty is presented. The integration of objectives are to realize the trade-off among the objectives. Much uncertainty exists in the construction project, so the trade-off optimization problem of time,cost and quality is discussed under uncertainty. The trade-off optimization model is presented based on different risk level. The optimization compromise solutions of objectives are found under different risk levels. So that decision-makers can choose appropriate objectives according to the risk level.On the integration of risk management process and methods, the risk management cycle is given and the modified risk matrix and risk fuzzy evaluation method based on the cooperation are presented. The risk management process include risk identification, risk evaluation, risk handling and risk monitoring. The risk cycle can integrate the four phase of risk management. The integration of risk management and project management is also discussed. The risk management methods are gathered and the advantages, disadvantages and application ranges are listed. The meaning of integrated risk management methods is to choose the appropriate method according to the different phases and characteristics of construction project. Considering the risk views of different participants are different, the modified risk matrix which can help to make decision is discussed. The risk factors influencing project objectives are listed, and the cooperation of project participants to guarantee objectives is considered in the risk evaluation model as a influence parameter. The weight of risk factors are computed by fuzzy AHP method, and the weight of same factor is different in different objective risks. The risk evaluation model is established based on cooperation of project participants, and it can be used to evaluate the total project risk by fuzzy reasoning. This method is applied to some gymnasium project.On the integration of risk management organization, the virtual risk management team is established and the cooperation strategies of participants are analyzed by the evolvement game theory. The virtual risk management team spans the organization boundary, regards cooperation as organization environment and relies on the project total lifecycle information flat. The virtual team carries out risk management and the efficiency of risk management is enhanced. The project participants are finite rational, taking owner and contractor as example, the cooperation strategies of participants are analyzed by the evolvement game theory. It is concluded that promoting the cooperation of participants needs the information sharing and stimulating mechanism.The project integrated risk management information system is presented. It is established that the flow chart of dynamic information discovery and share based on the data grid in project total lifecycle. The project integrated risk management information system includes the risk management system, risk management database and the exterior support system. The risk management system includes the four subsystems, they are risk identification, risk evaluation, risk handling and risk monitoring. The risk management database includes risk factor database and the measure database. The exterior support system includes knowledge database, model database and case database. Their functions are explained in this paper. Based on the hierarchical risk breakdown structure, the field and coding of risk database are designed. It is presented that the information classification and mathematic expression. The flow chart of dynamic information discovery and share is given based on the data grid technology in total lifecycle.
Keywords/Search Tags:Construction Project, Risk Management, Integrated Management, Total Lifecycle
PDF Full Text Request
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