Study On The Three-dimensional Virtual Dynamic Management Technology Of The Municipal Construction Projects

This thesis attempts to utilize such theories as Virtual Reality Techniques, Earned Value Management, Cost-significant, Back-Propagation Neural Network (BPNN) and Gray model and so on to develop and apply Virtual Dynamic Optimization management software system. This system is applied to controlling the cost, duration, quality, environmental protection and safety for the Pailiangya tunnel project management of the municipal infrastructural projects in Bazhong City, Szechwan Province, so that the economic and social performance of the project’s management is gotten a large promotion. This paper mainly include:firstly, virtual static object optimization management system in tunnel construction is established. Before the construction, according to construction characteristic and technical requirements of tunnel construction, data of various types of work, professional technology, construction and management should be collected extensively. Then, by using techniques such as Back-Propagation Neural Network (BPNN), Gray model, Virtual Reality Techniques, PERT network techniques and Cost-significant, virtual static object optimization management system in tunnel construction can be established with the characteristics of multi-work, multi-professional, multi-coordination, mutual intercrossing and multi-dimension. Secondly, virtual dynamic optimization management system in tunnel construction is built. In the process of construction, this article use the EVM, PDCA cycle management, CS, and PERT Critical Control Point, VR and other technologies to create virtual dynamic optimal management system, so that managers can sum up and analyze the condition of projects completed visually and intuitively, and analyze problems and reasons existing in the process of construction in time. Then manages can predict the problems that probably arise, make pre-control countermeasures, realize constant loop optimization and control of construction process, and nip hidden dangers and problems of the construction in the blossom, so that assurance of time limit for project and cost saving can be realized. Through the above practical application and operation of the system, each optimized management scheme can realize simulation run visually in the virtual map in advance, provide advanced decision-making platform and methods for managers. During the course of construction phase, each project management can know clearly about the situation of the next phase of work, the problems that should be solved such as time limit for the project and cost, and the pre-control measures when and where through the computer virtual visualization system. Thereby, the efficiency and level of management of tunnel construction can be enhanced greatly.