The Engineering Bid Evaluation Decision Making Model Based On Gray Matter-element Theory Research

China’s current system of construction project bidding and construction industry is gradually accompanied by the establishment of market trends. The establishment of bidding system to whether the creation of a fair, just and open market environment, so that bidding complementary advantages of both sides, construction project resources are rational, scientific aspects of the configuration depends on the whether the establishment of evaluation system and the method of assessment are scientific and rational.At the present stage of the evaluation process in our country is mainly taken, such as:a comprehensive evaluation method, the voting method, the assessment method, and so some of the lowest tender price of traditional methods of evaluation. These methods are mainly based on expert evaluation of the subjective experience of the judges, and did not form a stable and objective evaluation system and a scientific and rational evaluation criteria and methods.The nature of the evaluation process is a multi-evaluation factors for multi-objective comprehensive evaluation process. In this article, the authors take the gray matter-element theory and the theory of a combination of both methods, the use of gray in incomplete information theory approach and matter-element theory in qualitative and quantitative transformation of the advantages of each other, through the assessment standard composite objects built of gray matter-element matrix, to determine the best gray-element compound and things associated with the degree of gray-element calculations to build the evaluation model established by the end of all things gray correlation tender offer companies an objective and reasonable sort to look forward to making the evaluation results tend to be more reasonable.The evaluation model of a project supervision units to simulate the evaluation of the bidding process, through an objective evaluation index system building, qualitative quantitative indicators, composite gray-element determination of its final calculation of the correlation of the process in line with the conclusions project bidding and the actual situation of the basic objective and reasonable, compared to the traditional evaluation methods, the application of the model of the process of subjective factors in greatly reduced.Empirical studies have shown that the gray matter-element theory building based on the evaluation model, the multi-factor evaluation process with the scientific and objective rationality.