Bracket at lower end of inclined inner support of supporting structure of foundation pit, manufacturing tool and construction method

Abstract

The invention discloses a manufacturing tool of a bracket at the lower end of an inclined support of a supporting structure of a foundation pit. The manufacturing tool comprises four side templates (1) and a bottom template (6), and through holes (8) allowing anchor bars to penetrate through are formed in the bottom template (6). The invention further discloses a bracket manufactured with the manufacturing tool. The bracket comprises a hanging ring and a plurality of anchor bars, wherein the anchor bars are anchored in a concrete block, and the lower ends of the anchor bars extend out of the concrete block. The invention further discloses a construction method of the bracket at the lower end of the inclined support of the supporting structure of the foundation pit. The core step of the method is as follows: a plurality of concrete brackets are prefabricated, and then, the plurality of well prefabricated brackets are hung to the bottom of the foundation pit by the hanging ring. According to the bracket, the manufacturing tool and the construction method, the cost is reduced, and the construction period is shortened.

Description

technical field [0001] The invention relates to the technical field of foundation pit support, in particular to a corbel at the lower end of an inclined inner brace of a foundation pit support structure, a manufacturing tool and a construction method for the corbel. Background technique [0002] The traditional foundation pit support structure system includes a circle of surrounding protection piles arranged along the edge of the foundation pit, a circle of top beams are arranged on the pile top of each surrounding protection pile, and one or more layers of different heights are arranged inside each surrounding protection pile. The enclosure purlins, the enclosure piles and the enclosure purlins connect each enclosure pile in the same row to form an enclosure pile wall, and horizontal inner supports are arranged between different enclosure pile walls. However, with the development of foundation pit technology, the area of ​​the foundation pit is getting larger and larger, fo...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned construction method has the following defects: First, a set of formwork components is required for each corbel to be constructed. Calculated by 120 corbels, 120 sets of formwork components are needed, and each set of formwork components needs at least three horse stool bars to support, that is, 360 horse stool bars. It is also necessary to install an annular anti-overflow plate at the lower end of the four side formworks of each group, that is, a total of 120 annular anti-overflow plates are required. Need 40 sets of formwork components, 40 ring-shaped anti-overflow plates and 120 horse-stool bars, the manufacturing cost is high, and the cost is large; And after pouring and tamping, wait for the corbel concrete to dry and hard before proceeding to the subsequent construction process, which requires a lot of man-hours and prolongs the overall construction period

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