Foundation pit supporting method for preventing displacement limit exceeding of soft base cement mixing pile

Abstract

The invention discloses a foundation pit supporting method for preventing the displacement limit exceeding of a soft base cement mixing pile. The foundation pit supporting method comprises the following steps that a, sand bags are piled up in positions at the foundation pit bottom near a mixing pile so that the sand bags are oppositely against the mixing pile and face the side surface of the foundation pit; b, a ground groove is arranged at the foundation pit bottom in a certain distance from the mixing pile, in addition, a ground beam is cast, and the sand bags are positioned between the ground beam and the mixing pile; c, a position of the mixing pile near the top is transversely provided with a concave groove, and first structural steel is fixedly arranged in the concave groove; d, an inclined support component is fixedly arranged between the first structural steel in the concave groove of the stirring pile and the ground beam of the foundation pit for supporting; and e, the sand bags are removed for continuously carrying out subsequent construction. The inclined support component is used for preventing the displacement limit exceeding of the cement mixing pile supporting structure by the method, the building cost of projects is low, the work period is short, and the inclined support component used by the method does not need to penetrate through the adjacent underground spaces, and the like, so the damage to foundation piles of buildings beside the construction site can be avoided.

Description

technical field [0001] The invention belongs to the field of building foundation construction, and in particular relates to a foundation pit support method for preventing the displacement of soft-ground cement mixing piles from exceeding the limit. Background technique [0002] In the field of construction engineering, in the construction of the floor basement, it is necessary to use cement mixing piles to support the pit wall during the excavation of the foundation pit. However, during the excavation of the foundation pit and the construction of the basement, the horizontal displacement of the cement mixing pile may occur. When the horizontal displacement exceeds a certain threshold, the foundation pit will be in danger. Therefore, it is necessary to control the horizontal displacement of the cement mixing pile to prevent the cement The displacement of the mixing pile exceeds the limit. [0003] In the prior art, the upper part of the mixing pile is usually tied with a pre...

AI Technical Summary

Problems solved by technology

However, the cost of the prestressed anchor is not cheap, and it takes a long time to stretch after the anchor cable is driven into the mixing pile and grouted, and in order to achieve a sufficient anchor length, the anchor cable length may hit the adjacent building Foundation piles, causing damage to foundation piles of adjacent buildings

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