Concrete pile suitable for foundation treatment

Abstract

The invention discloses a concrete pile suitable for foundation treatment. The concrete pile comprises a pile body which is a variable cross-section structure formed integrally, diameter expansion portions are arranged on the pile body at intervals, a diameter reduction portion is arranged between every two adjacent diameter expansion portions, and the diameter reduction portions and the diameterexpansion portions are connected and fastened through necking down structures; each diameter expansion portion is a closed ring or non-closed ring provided with a notch, and difference value between the radial width of the diameter reduction portions and that of the diameter expansion portions is smaller than or equal to 60 mm. The concrete pile has the advantages of being higher in practicabilityand applicability, the pile body directly make contact with an original soil body in the construction process, no weak link exists, and the foundation soil bearing capacity is promoted remarkably bymeans of expansion and vibration on the soil body by the diameter expansion portions; after the soil body is solidified, loads on the foundation soil are uniformly distributed into the foundation soilthrough the load bearing faces of the diameter expansion portions and the diameter reduction portions, a whole is formed by the foundation soil and soil around the pile, the foundation settlement problem is improved substantially, and the global stability of the foundation is improved; the concrete pile is low in manufacturing cost and good in economic benefits.

Description

technical field [0001] The invention relates to the technical field of foundation treatment engineering, in particular to the improvement of the vertical reinforcement structure in the foundation treatment engineering, and more precisely relates to a concrete pile suitable for foundation treatment. Background technique [0002] With the proposal of major strategic goals such as "building a powerful ocean country" and "green building and building industrialization", various construction projects have developed rapidly, but the land available for construction has been decreasing. Engineering has increased substantially. Weak soil has special physical and mechanical properties such as low strength, poor stability, and large deformation, which lead to its unique engineering problems, such as high water content in the soil, very poor water permeability, and pore water pressure will rise sharply after being subjected to strong loads , the compaction and consolidation performance ...

AI Technical Summary

Problems solved by technology

However, the construction process of this kind of sand-filled bamboo pile is complicated, and the quality controllability is poor. At the same time, in order to meet the requirements of sand filling and drainage during the construction process, the height of the bamboo joints on the pile body should be at least 100mm. The gap between the soil and the soil will increase the distance between the two piles, which will reduce the bearing capacity per unit area of ​​the foundation. It is not suitable for foundation treatment projects that require a higher bearing capacity per unit area; secondly, the filled sand and soil There is a weak link at the junction of the layers, where the friction force is small, and the bearing capacity of the pile body cannot be evenly and effectively transmitted to the soil around the pile through the bamboo joints, and cannot form a pile-soil community with it

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