The hydraulic piling rig, based on the type, structure, load, and geological conditions of the building, selects pile foundation, composite pile foundation, and rigid pile composite foundation. It is designed with a reasonable layout, adjusting the pile-soil support stiffness to match the load. Considering rock penetration conditions, the hydraulic piling rig must enhance its vibration resistance. For small diameter holes, a single-door double-bottom soil grabbing bucket can be used, and for drilling in sticky silt soil, a full-open drill bit or a straight spiral drill bit with a water flow hole can be chosen.
The unique speed-increasing valve design of the hydraulic piling rig improves the working speed. For some softer sites, compaction must be carried out during work. Areas with severe wear should be repaired in a timely manner, and repairs should not be postponed until after construction is complete. In rock, the pattern of energy dissipation and the criteria for dynamic fracture are clear: when the loading energy is below a certain threshold, it does not contribute to crack propagation and is entirely dissipated uselessly.
The efficiency of pile sinking by vibration method with the hydraulic piling rig is higher compared to other methods, mainly suitable for steel sheet piles, steel pipe piles, and slender concrete precast piles less than 8m in length. After using the hydraulic piling rig each day, the mud on the drill rod should be cleaned, and the construction site should be ensured to be level before construction. The slope of the construction site should not be greater than 2 degrees. In reality, the soil around the pile, within a range of about 50-200mm, is often highly consolidated, leading to an increase in the effective diameter of the pile.
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