A multi-platform self-waterproof foundation pit enclosure structure without internal support and its construction method

Abstract

The invention relates to a multi-platform non-inner support self-waterproof foundation pit enclosure structure and a construction method thereof. The enclosure structure comprises an outer enclosure device, at least one inner layer enclosure device, and a pull structure, wherein the inner enclosure is low and located in the inner ring of the foundation pit, the outer enclosure is high and located in the outer ring of the foundation pit, forming a stepped shape in the interior of the outer height, and the outer enclosure includes high enclosure components, anti-corrosion Side high piles and connecting beams, the inner enclosure device is composed of low enclosure components and rear anti-side low piles. In the present invention, by setting up multi-layer enclosure devices, the inner layer enclosure device forms internal support for the outer layer enclosure device while protecting the foundation pit, avoiding the setting of supports in the foundation pit, improving the safety of foundation pit construction, avoiding the The impact of foundation pit support on the construction of superstructures can serve multiple purposes. It provides a reliable and effective support structure and its construction method for the support of ultra-deep foundation pits, which can be widely used in large-scale deep foundation pits, especially ultra-deep foundation pits. Support for deep foundation pits.

Description

technical field [0001] The invention relates to a foundation pit enclosure structure and a construction method thereof in building structure geotechnical engineering, in particular to a foundation pit enclosure structure without internal support and a construction method thereof. Background technique [0002] With the development of building construction technology, the application of ultra-deep foundation pits is becoming more and more extensive. How to support ultra-deep foundation pits reasonably and effectively is the technical core of foundation pit construction. At present, the support method for deep foundation pits is generally in the form of retaining piles plus support in the foundation pit and anchor rods. This form of support has high safety, but the site in the foundation pit is often relatively narrow, and the existence of the support in the foundation pit seriously affects The construction of the main structure has slowed down the construction progress; in add...

AI Technical Summary

Problems solved by technology

At present, the support method for deep foundation pits is generally in the form of retaining piles plus support in the foundation pit and anchor rods. This form of support has high safety, but the site in the foundation pit is often relatively narrow, and the existence of the support in the foundation pit seriously affects The construction of the main structure has slowed down the construction progress; in addition, the deeper the foundation pit, the more complicated the surrounding soil conditions, and there are often some reinforcements that cannot be laterally stabilized by bolting. As the depth of the foundation pit increases, the pressure of groundwater increases, and the waterproofing in the foundation pit plays a decisive role in the safety and environmental impact of the foundation pit. It is easy to affect the surrounding environment, and is not suitable for foundation pit support in areas with high requirements on the construction environment, such as subways, roads, buildings, etc.

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