Reinforcing Method for Foundation of Narrow Foundation Pit and Structure of Foundation Pit

Abstract

The invention relates to a method for reinforcing and enhancing the foundation of a narrow foundation pit, comprising the following steps: determining whether the foundation pit is a narrow foundation pit; installing the first reinforcing piece; installing the second reinforcing piece on the peripheral edge of the foundation pit. In the above-mentioned narrow foundation pit foundation strengthening and strengthening method, in the construction process, firstly, after the construction personnel measure the actual size of the foundation pit and calculate, after judging that the foundation pit is a narrow foundation pit, the width of the narrow foundation pit along the width direction of the foundation pit The first reinforced reinforcement is installed at the middle position; the second reinforced reinforcement is installed along the foundation edge of the foundation pit. In this way, the sliding surface of the narrow foundation pit is reinforced at the displacement caused by the sliding out of the pit, the implementation process is clear and simple, and the construction process is easy to operate. At the same time, the narrow foundation pit foundation reinforcement method has wide practicability, and can be applied to engineering technical fields such as highway engineering, municipal engineering, bridge engineering, and foundation treatment.

Description

technical field [0001] The invention relates to the technical field of building construction and foundation treatment, in particular to a method for strengthening and reinforcing the bottom of a narrow foundation pit and a foundation pit structure. Background technique [0002] In municipal pipeline engineering and urban rail transit engineering, the construction space is significantly limited, and the excavated foundation pit is often long and narrow, and the ratio of the width of the foundation pit to the depth of the foundation pit is large. This is different from common construction foundation pits, where the ratio is much larger. The stability of the foundation pit is closely related to the safety of the foundation pit itself and the adjacent buildings. [0003] However, when the ratio is small, the width of the foundation pit is significantly smaller than the depth of the foundation pit, which may cause the sliding surface to be close to or even in direct contact with...

AI Technical Summary

Problems solved by technology

In addition, the sliding surface of conventional foundation pits is not subject to additional constraints, while the sliding surfaces of narrow and long foundation pits intersect in the pit, the sliding surfaces on both sides will be constrained by each other, and the constraint effect of the soil load around the pit is also significant

This constraint restricts the development of the sliding surface, and also changes the sliding force, anti-slip force, resulting in a change in stability

[0004] In the existing technology, pit bottom reinforcement is an effective method for foundation pit support in soft soil areas, but the form of pit bottom reinforcement has not considered the particularity of narrow foundation pits, and the safety during construction needs to be improved

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