BIM-based cost management of large engineering projects

Abstract

The development of computer technology promotes reform of information technology. Building information model (BUM) is thus applied in cost management of large engineering projects. Thus, some shortcomings of traditional project cost management are solved and improved. One of important topics of 12 th Five-year plan science and technology support programs is to research, develop and generalize BIM. BIM leads building industry to enter a higher level. This paper discusses BIM-based cost management of large engineering projects. Overview of BIM BIM refers to the model established on the basis of data information in the engineering project. It has important applications in design cost in the early stage of the project and building management in the later period. It belongs to a digital measurement method. BIM is a new computer-aided technology and can implement four-dimensional or five-dimensional simulated construction. It brings convenience for managers to predict, analyze and solve various problems in the initial design stage. The five-dimensional information forms through adding time and cost in BIM thee-dimensional model and reaches the purpose of direct project cost management. BIM can vividly confirm the material mobilization time and resource consumption within schedule scope, reduce storage cost and unnecessary material loss to the largest extent, and carry out dynamic project cost management. So, BIM technology has an important position in cost management of large engineering projects. Importance of cost management and control of large engineering projects (I) Cost management of engineering projects plays a decision role in the whole engineering construction also imposes conclusive impacts on cost control. If the construction unit is seriously short of management, engineering cost may become unreasonable and the accuracy will be low. During changing site certificate of both parties, if the responsibilities of both parties are not specified, and material price is not explicitly changed, a series of problems will occur during project settlement. So, it is required to pay attention to changing the certificate, carry out site management orderly and carefully manage the project so as to control the cost. (II) Project cost control occupies an important position in the whole engineering construction. In practical construction project, the market positioning of the project is generally measured bidding. But, if relevant bidding system has large defects, cost control will become unreasonable and impact benefits of the whole construction unit and the enterprise. Project cost will increase under the following situations: bid invitation documents have many loopholes in cost control; the work is carried out without base number of the bid; pricing evaluation system is imperfect and lacks enough rationality. Thus, the whole project will be affected. The enterprises which adopt new technology generally have low offer and low production cost, so they have large appreciation space. So, scientific and reasonable project const control is an important index to measure long-term development of an enterprise.