A Study On Factors Influencing Time Delay Of General Contraction Project

Project delay is prevalent and common all over the world. How to control project delay effectively is crucial for improving project performance. General contraction project is a complicated system. There are plenty of factors, which are not isolated, causing general contraction project delay. This brings great trouble for the control of general contraction project delay. The thesis is to qualitatively and quantitatively analyze the relationships among factors influencing general contraction project delay, using the method of interpretive structural modeling and structural equation model. First of all, thorough literature review of project delay is conducted. Taking account of the characteristics of project general contracting, the factors influencing general contraction project delay are identified by literature analysis and expert interview. Then, with the method of group discussion, the thesis analyzes the direct relationships among factors influencing general contraction project delay. And then the adjacency matrix and reachability matrix are obtained. Through level partitions of the various factors, a structural model of factors influencing general contraction project delay is constructed using the method of interpretive structural modeling. The method of Impact Matrix Cross-Reference Multiplication Applied to a Classification is used to analyze the indirect relationships among various factors. The indirect influence/dependence map and indirect influence graph of factors influencing general contraction project delay are analyzed, and the direct and indirect influence/dependence of each factor is compared. In order to verify the relationships among various factors in the interpretive structural model, a questionnaire is designed to collect data of general contraction project and reliability analysis is done. Using the method of structural equation model, an initial model is constructed on the basis of the interpretive structural model. According to the results of AMOS software, the initial model is evaluated and seventeen modifications are conducted to get the final model. Finally, the structural model and relationships among factors influencing general contraction project delay are thoroughly discussed.