Prefabricated double-row pile and water-stop curtain integrated foundation pit supporting structure and construction method thereof

Abstract

The invention relates to a prefabricated double-row pile and water-stop curtain integrated foundation pit supporting structure and a construction method thereof. The structure comprises double rows of piles, steel frame beams, crown beams and cemented soil stirring piles; the double rows of piles comprise the front row of piles and the rear row of piles formed through the manner that a front concrete pipe pile and a rear concrete pipe pile which are arranged at an interval serve as a unit, and the units are evenly arranged along the edge of a foundation pit; the corresponding detachable steel frame beam is connected between the tops of two concrete pipe piles in each unit; the detachable crown beams are fixedly connected between adjacent steel frame beams of the double rows of piles; and the cemented soil stirring piles are arranged between the front row of concrete pile piles of the double rows of piles and between the front row of piles and the rear row of piles, and a water-stop curtain is formed. The construction method comprises the steps that the positions of the double rows of piles and the positions of the cemented soil stirring piles forming the water-stop curtain are subject to division and piling, cemented soil is poured into the positions, the prefabricated concrete pipe piles are inserted into the corresponding positions of the double rows of piles, the corresponding steel frame beam is fixedly connected between two concrete pipe piles of each unit, the corresponding crown beam is fixedly connected between two steel frame beams, and after cemented soil materials are solidified, construction is completed.

Description

technical field [0001] The invention relates to the field of building construction, and relates to a foundation pit support structure integrated with prefabricated double-row piles and a water-stop curtain and a construction method thereof. Background technique [0002] There are many types of foundation pit support structure systems, each with its own scope of application. From the perspective of structural form, row piles (walls) + internal support systems (or external anchors) are often used in soft soil areas. Among them, bored piles are commonly used for row piles, and the internal support system is mostly cast-in-place reinforced concrete structure. These structures will have a great impact on the environment during the construction process, and consume more raw materials, especially the internal support system, which needs to be dismantled and cleaned up one after another along with the construction process, and a series of procedures such as increased construction w...

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Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies, the purpose of the present invention is to provide the field with a prefabricated double-row pile and water-stop curtain integrated foundation pit support structure and its construction method, so that it can solve the problem of the large investment cost of the existing foundation pit support structure. , easy to cause environmental pollution, and technical problems of inconvenient recycling

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