Foundation pit support structure and wall-formwork integrated construction method thereof

Abstract

The invention discloses a foundation pit support structure and a wall-formwork integrated construction method thereof. A support member is constructed on a space-limited side, the support member is sprayed with concrete on the side wall close to a foundation pit to be excavated to form a concrete surface layer, the support member and the concrete surface layer are used as an exterior wall formworkof the space-limited side, and the side of the concrete surface layer away from the support member is used for excavation of the foundation pit; and one ends of expansion bolts penetrate through theconcrete surface layer to be connected with the support member, the other ends of the expansion bolts are connected with one ends of counter-pull water stop water screws, the other ends of the counter-pull water stop screws are used for penetrating through an inner wall formwork parallel to the concrete surface layer and connected with the inner wall formwork, and a wall body is formed between theconcrete surface layer and the inner wall formwork parallel to the concrete surface layer. During construction, the support member is formed, then the foundation pit is excavated, the concrete surface layer is formed on the side wall of the support member, and finally the expansion bolts and the counter-pull water stop screws are mounted. The foundation pit support structure is small in occupiedspace and convenient to construct in a limited space.

Description

technical field [0001] The invention relates to the technical field of civil construction, in particular to an integrated construction method of a foundation pit support structure and wall formwork. Background technique [0002] With the rapid development of the country's economy in recent years, the construction industry has become increasingly prosperous, and civil engineering projects have sprung up on a large scale. There are more and more deep foundation civil engineering projects. At present, there are two main methods for the implementation of deep foundation civil engineering projects. One is grading and excavation. After excavating to the design elevation, the foundation and superstructure construction will be carried out. The amount of excavation and transportation is large, and there is no construction space when the site space is limited; It is a construction technology to reserve enough fertilizer tanks in the foundation pit for subsequent construction. The dis...

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Problems solved by technology

There are more and more deep foundation civil engineering projects. At present, there are two main methods for the implementation of deep foundation civil engineering projects. One is grading and excavation. After excavating to the design elevation, the foundation and superstructure construction will be carried out. The amount of excavation and transportation is large, and there is no construction space when the site space is limited; The construction technology that reserves enough fertilizer tanks in the foundation pit for subsequent construction. The disadvantage of this method is that the amount of concrete, steel bars and other materials is large, the cost is high, and the economy is poor when the local space of the site is limited.

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