Research On The Influence Factors And Countermeasures Of The Construction Cost Control Of Highway Reconstruction And Extension Project Based On Grey Incidence Analysis

With the rapid development of expressway construction in our country, China’s expressway mileage breakthrough unceasingly, has been basically completed to build the national expressway network, completely changed the backward situation of China’s transportation infrastructure, for economic and social development and the improvement of people’s living standards has played a good role in promoting. However, in the efforts to build a new highway constantly at the same time, we should see the rapid economic development has led to residents and logistics demand more and more big, part of the trunk highway and expressway traffic volume is growing rapidly in developed economic regions, the existing highway has become a "Bottle Neck Road", reducing vehicle speed greatly, even congestion is serious, not only waste energy, aggravating environmental pollution, reduce the residents’ travel well-being index, and the density of the vehicle too prone to traffic accidents. Therefore, part of the expressway reconstruction and extension should be conducted urgently, improve traffic capacity.Expressway extension project was implemented at present in our country is less, have not formed a complete set of management system, in the control theory and method of the project cost control is mainly the application of the new project, which can’t adapt to the new problems of extension project, thus leading to reconstruction and extension project cost control deviation is large, even the engineering cost exceed budget approval, the risk of cost is out of control. Therefore, it is very necessary to study and improve the cost control of the expressway reconstruction and extension project.Through summarizing and analyzing the project cost control method at home and abroad, according to the characteristics of expressway extension project, based on the viewpoint of the owner, summed up the main factors affecting expressway extension project cost from the whole project construction; Next introduced the gray incidence analysis theory, the influence factors analysis of cost control model is established, and then introduces the model to the engineering example, the analysis of a certain expressway extension project cost control influence factors on the influence degree of project cost increase; Finally, by analyzing the calculation results, determine the key factors that affect the project cost control and puts forward the corresponding countermeasure, At the same time, combined with the actual project, calculate and analyze the possible effect of the corresponding countermeasures may be achieved.Through the study of this article, for the subsequent expressway reconstruction and extension project cost control to provide certain reference and help to save the investment of expressway extension, improve investment benefits.