Research Of Construction Programme Management Based On Petri Net Of Workflow Technology

Nowadays, more and more projects are in the multi-organizational and multi-project environment in the form of clusters. The current management planning and control technology tends to extensive so as to lack of a complete and unified workflow control scheme during the operation of the programme, and information of communication can not effectively meet the needs of the construction of the programme. In order to improve the status of construction programme management and promote the effective combination of construction programme management practices in integration management, this paper, based on integration management theory and combination of theoretical studies, modeling and simulation technology, studied the integration theory, construction modeling and workflow management system of construction programme by means of workflow technology as well as the Petri net modeling tools.This paper analyzed the integration nature of construction programme, interpreted the connotation and mechanism of management workflow, management organization and integration information and presented a global framework model for integration management of construction programme, as well as discussed the feasibility to achieving integration management of construction programme by means of workflow technology. The above study laid a theoretical foundation for this paper.To achieve process integration in the global framework model of construction programme, this paper presented a workflow model of the construction programme by hierarchical timed colored Petri Net on the basis of analyzing the characteristics of workflow model and building a framework of workflow model of construction programme in the implementation phase. On the basis of the workflow model, considering the resource constraints, this paper presented a resource model of the construction programme by defining non-empty colored sets in hierarchical timed colored Petri net and expressing the classification and combination of resources with the token color. The workflow model and the resource model of the construction programme can not only explicitly illustrate the sequence, parallel, synchronization and other complex logic relationship between sub tasks of programme in time and space fields, but also reveal characteristics of the internal dynamic behavior of the programme. The workflow model and the resource model can be used to master the whole process of implementation phases all-round accurately and achieve workflow intergration, as well as optimize the resource allocation effectively, providing powerful guarantee to construction programme in technological and methodological aspects ultimately. With the CPN Tools simulation platform for modeling and simulating an example of a construction programme, the validity of the model is verified through the simulation analysis to the model structure, schedule and process optimization.Once the workflow model and the resource model of construction programme has been constructed, the process definition is finished. On the basis of process definition, for the integrated collaborative demand of the construction programme in the computer network environment and functional requirements of construction programme workflow management system for information integration, this paper developed a workflow management system of construction programme based on the workflow reference model of WfMC and described the interface between each module, defined the functions and relations of modules and interfaces in detail. The effectiveness of the application system is analyzed subsequently. The workflow management system of construction programme is such a network management system which can realize automation, informatization and integration, and provide a platform for information integration, promote the organization integration, and guarantee the process integration in the implementation phases of construction programme. With workflow modeling and workflow management system, the global framework model for integration management of construction programme was realized.