基于Petri网的建设工程项目实施阶段工作流建模与仿真

构建一个能够准确表达实施过程系统性、动态性和不确定性的工作流模型是实现建设工程项目实施阶段工作流管理与控制的有效途径。在对建设工程项目实施阶段工作流模型特点分析及工作流概念模型构建的基础上,基于分层赋时着色Petri网构建建设工程项目实施阶段工作流模型。通过运行该工作流模型,能够获得实施阶段的信息流、资源流、异常处理、持续时间等抽象内容,不仅为实现建设项目实施阶段的工作流管理与控制提供有力的方法支持,同时也是Petri网建模技术在建设工程领域中的应用拓广。借助CPN Tools仿真平台,以一般工业与民用建筑的实施阶段为例进行工作流模型的构建与仿真,验证了基于分层赋时着色Petri网构建建设工程项目实施阶段工作流模型的正确性和有效性。

Workflow modeling and simulation for implementation stage of construction project based on Petri net

In order to effectively carry out the workflow management and control, it is very important to build a workflow model which can accurately express the systematicness, dynamics and uncertainty during the implementation stage of a construction project. By analyzing the workflow features and building the workflow conceptual model of the implementation stage of construction project, the workflow model based on the hierarchical timed colored Petri net was presented. By means of the model, some items such as information flow, resource flow, exception handling, duration, and other abstract contents of the implementation stage can be available. It is not only providing a powerful methodology support for the workflow management and control, but also expanding the Petri net modeling in the field of construction engineering. With CPN Tools simulation platform, taking an example of the implementation stage of a general industrial and civil building, the authors built its workflow model for control and management, and at last, verified the correctness and effectiveness of the model.