Abstract
This paper identifies 18 driving factors of prefabricated buildings through literature review. After that, this paper collected corresponding questionnaires from industrial experts to clarify the relationships among these driving factors, and establishes a hierarchical relationship diagram of driving factors based on DEMATEL method, reveals the key direct driving factors of prefabricated buildings. Finally, puts forward suggestions to promote prefabricated buildings in China.
Highlights
Basic principles of the DEMATEL model methodThe DEMATEL method was proposed by scholars A
1 Introduction influencing factors of assembly project costs from the four aspects of design, management, technology and
Many construction projects have strict schedule requirements, which are difficult to meet with traditional construction methods, while prefabricated technology can effectively shorten the construction period
Summary
The DEMATEL method was proposed by scholars A. The Grey method is a mature method for solving problems related to uncertain decisions. This method uses interval grey numbers, that is, the description of a problem does not have a more accurate definition. This article combines Grey-DEMATEL to study, which can reduce the research error caused by the subjectivity of expert scores is too strong, and clarify the intricate relationship between the driving factors of prefabricated buildings. 3.2 Specific steps of the DEMATEL method (1) Constructing a direct impact matrix. The grey number theory is combined to form a matrix form. Using formula to clear the grey number matrix, we get the direct influence matrix C: Cij = w1Ci1j + w2Ci2j + w3Ci3j ⋯ + wnCinj, ∑ni=1 Wi = 1(1). The direct impact matrix C is standardized, and the normalization directly affects the matrix A
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