Analysis on Interfering factor of Superhighway Pavement Roughness Based on DEMATEL/ISM/MICMAC Models

Abstract To make superhighways safer and more comfortable, the interfering factor of the superhighway roughness were determined through investigation and analysis, and the correlations among the interfering factors and the degree of interfering on the roughness were evaluated by the method of integrating DEMATEL-ISM and MICMAC model. Through the analysis of DEMATEL model, 9 causal factors and 19 result factors that affect roughness were obtained. The mutual interfering correlation among these factors and the interfering degree on roughness are studied. Based on ISM model, a multilayer hierarchical model of all factors affecting roughness was established, and the 28 factors were divided into 14 levels. Through the MICMAC model, 8 dependent factors, 5 independent factors and 15 autonomous factors were obtained, which verified the rationality of the selection of interfering factor. The results show that reasonable design, strict management and strict construction process can effectively improve the roughness of the superhighway.