Pre-fabricated specially-shaped hollow pile for deep foundation pit supporting structure and construction method of pre-fabricated specially-shaped hollow pile

Abstract

The invention provides a pre-fabricated specially-shaped hollow pile for a deep foundation pit supporting structure and a construction method of the pre-fabricated specially-shaped hollow pile. The pre-fabricated specially-shaped hollow pile comprises a pre-fabricated specially-shaped hollow pile body with a rectangular side and a strip pre-fabricated specially-shaped hollow pile body. The construction method includes (1) arranging a base layer: placing the pre-fabricated specially-shaped hollow pile body with the rectangular side and a taper base surface in a rectangular position of a base pit along an axis of a wall, sequentially placing the strip pre-fabricated specially-shaped hollow pile bodies with tapered base surfaces in the rest positions, and performing welding connection or reserving gaps among suspension walls of the pre-fabricated specially-shaped hollow pile bodies; using a mechanical method to perform whole or local or single pressing; (2) arranging layers above the base player; aligning and welding the pre-fabricated specially-shaped hollow pile body with a steel plate reserved for welding on the base surface and the pre-fabricated specially-shaped hollow pile body on the base layer in the vertical direction; welding or not welding a suspension wall between the two pre-fabricated specially-shaped hollow pile bodies in the horizontal direction. The pre-fabricated specially-shaped hollow pile is particularly applicable to intermediate and small underground parking garages and operable in construction environment with narrow fields.

Description

technical field [0001] The invention relates to a prefabricated special-shaped hollow pile and a construction method thereof for deep foundation pit support structures. Background technique [0002] At present, there are two types of support structures for deep foundation pits: one is temporary support structures; the other is the combination of support structures and main structures. After the construction of the basement is completed, the temporary supporting structure will completely terminate its function, and will leave permanent waste around the outer periphery of the main structure. The support form combining the support structure with the main structure often adopts the form of an underground continuous wall. The form of the wall, the construction will have certain limitations and disadvantages, such as: (1) large-scale trough forming equipment may not be able to enter the construction site; (2) a large amount of waste mud will be produced at the construction site o...

AI Technical Summary

Problems solved by technology

The support form combining the support structure with the main structure often adopts the form of an underground continuous wall. The form of the wall, the construction will have certain limitations and disadvantages, such as: (1) large-scale trough forming equipment may not be able to enter the construction site; (2) a large amount of waste mud will be produced at the construction site of the underground diaphragm wall, which will cause environmental pollution; (3) The wall surface of the underground diaphragm wall is usually rough, and there may even be mud inclusions. It is often necessary to make another lining wall to waterproof, thus increasing the construction period and cost

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