The Analysis On High Energy Level Dynamic Replacement Ground And Foundation Deformation Of Large Storage Tank

Large storage tanks are important equipments in the oil storage and transportationsystem. They all have very high requirements on ground and foundations. High EnergyLevel Dynamic Replacement (HELDR in short) method is a way of reinforcing softground. The research on working properties of the HELDR ground and foundation isvery important for large-scale storage tanks, it can make the design and constructionmore rational.According to the monitoring data of a100000m3storage tank in a practicalengineering, the first work is to analyze the distribution form along the tank radius andthe pile-soil reaction force ratio under different water-filling load, therefore the actualfoundation base reaction force distribution of the storage tank is described.Second, Pore water pressure、vertical displacement、horizontal displacement of theground is analyzed during the water-filling preloading. The ground settlement iscalculated by different methods. The settlement of the foundation is reckoned by indexcurve-fitting method. By comparing the actual and calculated settlement of the ground,the suggested value of the region’s settlement empirical coefficient is recommended.Finally, based on the analysis of ring foundation lateral pressure、reinforcementstress and concrete strain，the largest position of the lateral pressure is decided and thelateral pressure coefficient of the storage tank is proposed. Moreover, the variation ofreinforcement stress and concrete strain is grasped.The conclusion based on the monitoring data can provide a useful reference forground treatment and foundation design of storage tanks under similar site conditions.