Experimental and theoretical study on the modeling of uplift bearing characteristics of screw anchor in sandy soil foundation

At present, it is necessary to introduce the concepts of critical burial depth ratio and critical spacing ratio artificially into the theoretical research of the uplift bearing of screw anchor with multiple blades, which divides a continuous evolution problem into two special working conditions. However, the criteria of the two critical values are inconsistent, leading to risks in the engineering application of the theory. Based on model test and combined with digital photographic measurement technology, this