This paper explores a novel approach to clarify the applicability of the Integrated Project Delivery (IPD) principles in a certain region or country which has a specific cultural background, the paper further promotes the effective application of IPD principles. The method of combining qualitative and quantitative analysis is adopted, incorporating scientometric analysis, questionnaire survey, qualitative analysis, and a measurement model. On the basis of 310 sample data collected from various practitioners and researchers in China’s construction industry, the measurement models of IPD applicability analysis on the average level of sample (ALS) and the best level of sample (BLS) are established, respectively. The results show that these measurement models are essentially consistent with the composition of the conceptual model, including project performance, contractual principles, collaboration-related principles, behavioral principles, and catalysts. Thus, this paper provides a scientific and methodological basis for how to effectively apply the IPD principles. This study sheds light on project delivery system research in two aspects: it proposes a new idea to study the applicability of IPD principles and lays a foundation for the future quantitative study on the impact mechanism of IPD principles on project performance.
Although integrated project delivery (IPD) is still in its infancy in the construction industry worldwide, some principles can be effective without formal contractual languages and enforcements when IPD is employed as a philosophy as opposed to a delivery method. This paper aims to investigate the effect of IPD principles on project performance in China, providing a reference for improvement of project performance by the application of IPD principles in countries or regions where IPD is considered as a philosophy. A total of 205 data samples were collected from different IPD-related participants in China via a questionnaire survey. Eight hypotheses are proposed based on a literature review, and these are verified using a structural equation model (SEM). According to the results of the exploratory factor analysis, IPD principles, including behavioral principles, contractual principles, collaboration-related principles, and catalysts, are classified, and the internal relationship of various IPD principles is explored using SEM to analyze the impact path between IPD principles and project performance. It was discovered that project performance is directly affected by collaboration-related principles and catalysts. The contractual principles have positive impacts on both behavioral principles and collaboration-related principles, while the catalysts show positive impacts on behavioral principles. This work provides insights and managerial implications for local applications of IPD for construction practitioners, which should be considered by promoting regional IPD practices; it contributes to both theoretical and practical perspectives for improving project performance by the effective implementation of IPD in construction projects.
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