ABSTRACT
In the coastal soft soil area, the material shed compacted threaded pile composite foundation, when the stacking height reaches 5m-6m, the ground subsides, and the grid column appears large deformation, which causes the material shed to be in an over-hazardous state. The slub joints of the slub pile can increase the bearing capacity of the pile side, and the slub pile is used to strengthen the composite foundation of the compacted threaded pile. Design an indoor model test to study the influence of the construction of the bamboo-joint pile on the pile foundation of the shed and the influence of the compacted threaded pile in the composite foundation to guide the construction of the bamboo-joint pile. The test results show that the increase in excess pore water pressure generated during the pile driving process is reduced by 24%–46.3% compared with the pile driving, and the increase in the pressure caused by the pile driving is reduced by 16.26% ~67.37% compared with the pile driving. According to the test, it is determined that the pile is driven by the side of the step flow direction, which reduces the influence of the soil squeezing effect of the bamboo-joint pile on the original compacted threaded pile, side column cap and pile foundation.
