Built-in structure for high-pile base pile foundation

Abstract

The invention provides a built-in structure for a high-pile base pile foundation. The built-in structure comprises a built-in table surrounding the portion, below the ground or a soil surface line of the high-pile foundation, of the pile foundation. According to the built-in structure, lateral building-in of the pile foundation at the position of the ground or the soil surface line can be enhanced through the built-in table, the length of a free segment of the high-pile foundation is decreased, the lateral stability of the high-pile foundation is effectively enhanced, and the built-in structure has the advantages of being economical, easy and convenient to use, durable and the like and has the good using value and the good promotional value; in addition, as for the high-pile foundation of a pipe pile, the portion, which is below the bottom face of the built-in table and is less than 500 mm away from the pile block, of a core is filled with core filling concrete; as for the high-pile foundation of a solid pile, stirrup densification is adopted at the portion which is below the bottom face of the built-in table and is less than 500 mm away from the pile block so that the shear capacity of the free segment of the high-pile foundation can be enhanced.

Description

technical field [0001] The invention relates to a structural accessory of a high pile foundation, in particular to an embedded structure for the pile foundation of the high pile foundation. Background technique [0002] High pile foundation refers to the pile foundation at its lower part driven into the ground or mud surface, and the upper part of the high pile foundation is higher than the ground or mud surface line. Bearing type, etc. Since the high pile cap has a free length (the length of the pile above the ground or mud surface line), there is no soil support around the free section to bear the horizontal external force together, and the internal force and displacement of the pile body of the high pile foundation are lower than those under the same horizontal external force. The pile cap is larger, and its stability is therefore worse than that of the low pile cap. If there is a silt layer below the mud surface line, the horizontal resistance of the silt to the pile f...

AI Technical Summary

Problems solved by technology

Since the high pile cap has a free length (the length of the pile above the ground or mud surface line), there is no soil support around the free section to bear the horizontal external force together, and the internal force and displacement of the pile body of the high pile foundation are lower than those under the same horizontal external force. The pile cap is larger, so its stability is worse than that of the low pile cap

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