Temporary lightweight wall for foundation pit enclosure and its construction method

Abstract

The invention discloses a temporary lightweight enclosure for foundation pit enclosure and a construction method thereof. The lightweight enclosure includes wall boards, and a support is provided between the wall boards. The support includes a main screw, a sliding sleeve and a positioning screw, and the positioning screw is threaded on the On both sides of the sliding sleeve, the main screw passes through the sliding sleeve. The main screw is connected with a positioning nut. There is a top pressure plate connected to the main screw; the construction method includes the following steps: (a) foundation in place; (b) stacking; (c) support in place; (d) corner butt joint; (e) reinforcement; (f) Cover the top. The structure of the lightweight wall in the present invention is novel and stable, flexible and applicable, has good soil retaining effect, can be reused, the construction method is simple, the construction difficulty is low, the labor intensity is low, the construction efficiency is high, the construction period is short, the steps are orderly, and it is easy to control , Adjustment, effectively guarantee the construction quality.

Description

technical field [0001] The invention belongs to the technical field of foundation pit enclosure facilities, and in particular relates to a temporary lightweight enclosure wall for foundation pit enclosure and a construction method thereof. Background technique [0002] With the rapid development of transportation construction, many new highways, rail transit and other construction projects also have a corresponding large demand. Such construction projects generally require excavation of foundation pits. In order to ensure the safety of foundation pits, it is necessary to set up enclosures in the foundation pits. structure. [0003] The foundation pit enclosure structure in the prior art has the following defects during use: 1. The enclosure structure is mostly a temporary structure. After the project is completed, the enclosure piles, anchor cables and other components are left in the soil, becoming construction waste , resulting in a waste of resources, especially the anch...

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Problems solved by technology

[0003] The foundation pit enclosure structure in the prior art has the following defects during use: 1. The enclosure structure is mostly a temporary structure. After the project is completed, the enclosure piles, anchor cables and other components are left in the soil and become construction waste , resulting in a waste of resources, especially if the anchor cable stays in the soil layer, it may also affect the implementation of long-term nearby projects, and the follow-up processing cost will be greater; With the prolongation of time, the earth retaining plate constituting the enclosure structure will be squeezed by the soil around the foundation pit for a long time, especially after rainy days, the accumulated water in the soil around the foundation pit will increase, and the pressure on the earth retaining plate will increase, which will easily lead to The local retaining plate is deformed and damaged, which affects the whole locally, leading to damage and failure of the entire enclosure structure, and finally causes the foundation pit to collapse. Although the concrete enclosure structure has the advantages of high rigidity, strong deformation resistance, and good integrity, it needs on-site support. Form casting has problems such as complex construction, long construction period, high manual labor intensity, and inability to recycle;

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