Based on the Product-Organization-Process research model of VDC/BIM, this paper puts forward the POPi digital integration framework, in which the core element is increasing hardware and software infrastructure. It also discusses the factor model and dependent relationship of the POPi framework given the practical characteristics of BIM implementation and software diversity, and inter-organizational task interdependence in large-scale super high-rise projects. This paper analyzes the four core element models of the POPi framework from a practical point of view and the typical implementation based on element models in the design and pre-construction phase of Suzhou Zhongnan Center project.