Pile cap foundation structure and construction method thereof

Abstract

The invention relates to a pile cap foundation structure, and in particular to the pile cap foundation structure. The pile cap foundation structure comprises a steel casing pressed into the ground surface to position construction, a concrete pile vertically arranged in the positioning steel casing in a penetrating mode, and a bearing cap poured on the top end of the concrete pile through concreteand located on the ground, and the outer diameter of the concrete pile is matched with the inner diameter of the positioning steel casing; and the concrete pile comprises a plurality of vertically connected prefabricated pipe piles, the prefabricated pipe piles are internally provided with reserved cavities in the axis direction and in a penetrating mode, annular end plates are embedded in the twoends of the prefabricated pipe piles, the two vertically adjacent prefabricated pipe piles are connected through the annular end plates in a welded mode, the prefabricated pipe piles are provided with a plurality of slurry discharging holes communicating with the reserved cavities, and the slurry discharging holes are connected with sealing parts. The pile cap foundation structure has the advantages of high stability and strong binding force with loose soil layers.

Description

technical field [0001] The invention relates to a pile cap foundation structure, in particular to a pile cap foundation structure and a construction method thereof. Background technique [0002] Pile cap means that when the building adopts a pile foundation, the pile top is connected with a reinforced concrete platform or a flat plate on the pile group foundation to form a whole foundation to bear the load on it. [0003] In the existing construction, most of the bored pile cap foundations and prefabricated pile cap foundations are used. Among them, the bored pile cap foundation mainly includes construction preparation - hole forming - lower cage - pouring concrete - pouring cap, during construction, through Mechanical equipment initially drills holes on the ground, then presses the steel casing into the soil as required, fills the outer side of the steel casing with clay and tamps it tightly to prevent surface water from seeping out, and after the rotary drilling rig is in ...

AI Technical Summary

Problems solved by technology

[0006] Although the above construction method can rely on pressure to press the prefabricated pile into the loose ground and complete the construction of the prefabricated pile, because the underground soil layer is relatively loose, the combination ability of the prefabricated pile and the soil layer is poor. During the vibration, the underground soil will become looser, which will reduce the lateral support of the concrete piles. In severe cases, the prefabricated piles may be misplaced, causing safety hazards

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