The Effect of a Ground Brace with a Spacer on the Displacement and Bearing Capacity of a Horizontally Loaded Single Pile

Abstract

Statement of the problem. The influence of a ground brace with a spacer attached to the pile trunk on the movement and bearing capacity of piles under horizontal loads is investigated and the results obtained during the experiment are compared with the test results of a single pile. Results. A noticeable effect of the presence of a bed on the movement of the pile foundation has been established. With equal loads, piles with a bed have horizontal movement and the angle of rotation of the pile head is up to 2÷3 times less than those without a bed. An increase in the length of the strut leads to a decrease in the horizontal movement of the pile head up to 1.6 times and the angle of rotation up to 1.9 times compared to that with a bed, but without a strut. The bearing capacity of a pile with a bed increases up to 1.66 times with an increase in the length of the spacer from 0 to 3d, where d is the diameter of the cross-section of the pile. Conclusions. The dependence of the increase in the bearing capacity of the pile on the presence of a bed with a spacer was experimentally verified. The test results demonstrate a considerable ffect of the presence of a bed with a spacer on the horizontal and vertical movements of the pile, as well as on the decrease in the angle of rotation of the pile head.