ANALYSIS OF THE TESTING TECHNOLOGY FOR SCREW PILE FOUNDATIONS IN THE INTERNATIONAL STANDARD BS EN ISO 22477-1:2018

The article provides a detailed analysis of the testing methods for screw pile foundations in accordance with the international standard BS EN ISO 2477-1:2018. The key aspects of static pile testing are identified, including the assessment of the actual behaviour of the pile under load, determination of its bearing capacity, verification of compliance with design parameters, analysis of the impact of soil conditions and construction quality control. The physical and mechanical characteristics of soils, their heterogeneity and role in the formation of the ultimate pile resistance, as well as possible methods for improving the modelling of the interaction between soil and foundation structure are considered. The main stages of testing are described, including the preparatory stage (geophysical, hydrogeological and laboratory research, control of materials and welded joints, equipment calibration), loading and unloading procedures, as well as modern methods of monitoring and interpreting the results. Considerable attention is paid to the analysis of methods for automating testing processes, including the use of servo-hydraulic systems, adaptive control algorithms, fibre-optic sensors, wireless data acquisition networks and digital modelling. Ways to optimise the testing technology are proposed, including the integration of modern geodetic monitoring methods, automation of the loading process, the use of machine learning methods to predict the behaviour of foundations, the development of digital twins for real-time, and the improvement of methods for analysing settlement and pile stabilisation. The implementation of these approaches will help to improve the accuracy of test results, optimise design solutions, minimise design and construction risks, increase the efficiency of geotechnical research and the durability of foundation structures.