| Summary: | The high-pressure rotary jet pile construction method has been widely used in airport projects, particularly in regions with soft soil foundations, such as coastal areas. The method’s primary aim is to establish a sound foundation bearing capacity. However, the conventional machinery used in constructing high-pressure rotary jet piles lacks automation. Therefore, it is necessary to find a method to achieve automatic monitoring of the construction quality of high-pressure rotary jet pile. To achieve real-time quality control in high-pressure rotary jet pile construction, the development of high-pressure rotary jet pile construction data acquisition and monitoring equipment is made possible by integrating key technologies such as the global navigation satellite system (GNSS), the Internet of Things and massive data processing. The acquisition and storage of crucial construction parameters, such as the drilling position, drill rod verticality, drilled hole depth, grouting pressure, grouting lifting speed and grouting volume for high-pressure rotary jet piles is successfully implemented in this paper. A large amount of actual construction data is collected through an on-site application, and the construction quality of the high-pressure rotary jet pile machine is monitored and analyzed using geographic information system (GIS) technology. Actual applications demonstrate that the proposed digital monitoring model and method for rotary jet pile construction quality control is viable, improves the on-site management level and efficiency and has significant future value.
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