Continuous retaining wall of deep foundation pit and construction method thereof

Abstract

The invention provides a continuous retaining wall of a deep foundation pit. The continuous retaining wall comprises a continuous engaged part and a water blocking component, wherein the continuous engaged part is formed in a way that at least one layer of pile bodies are continuously engaged with each other and are circularly arranged around the foundation pit; the water blocking component is longitudinally inserted into the engaged position of at least two adjacent pile bodies and is used for preventing underground water from permeating from the outer side of the foundation pit to the innerside of the foundation pit of the continuous engaged part; and the water blocking component is made of channel steel or a steel plate. According to the structure, the underground water can be effectively prevented from permeating from the engaged position of the two adjacent pile bodies into the foundation pit by the water blocking component, so that the water blocking capability of the continuousretaining wall of the deep foundation pit is increased. The invention further provides a construction method of the continuous retaining wall of the deep foundation pit.

Description

technical field [0001] The invention relates to a foundation treatment method, in particular to a deep foundation pit continuous retaining wall and a construction method thereof. Background technique [0002] In order to stop water in deep foundation pits in the prior art, several interlocking water-stop piles are usually arranged along the wall of the foundation pit to form a retaining wall with water-stop function. In order to save costs, the water-stop piles are usually Cement-soil piles are used. However, the cement-soil piles are not strong enough to retain soil. In order to solve this technical problem, those skilled in the art usually arrange the concrete piles in the inner or outer layers of the cement-soil piles, or space them with the cement-soil piles. Arranging the concrete piles makes the cement-soil piles and the concrete piles form a bite, although the effect of retaining soil and water can be achieved, and the construction cost can be effectively reduced. H...

AI Technical Summary

Problems solved by technology

However, in the actual construction of deep foundation pits, the length of the drill bit used for drilling is relatively long. Although the initial adjustment of the vertical direction of the drill bit has been made, many factors such as mechanical vibration, human operation, topography and landform may cause the drill bit to fail in practice. During the construction process, the vertical deviation occurred, causing the pile holes to be formed obliquely instead of vertically downward from the pile holes on the surface. In the case of bifurcation, there is no overlapping part, so that the final pile body does not have an occlusal structure in the lower part, which cannot be found by the construction personnel on the surface, and can only be found after the foundation pit is dug. It is too late, it is easy to lead to the risk of construction

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