Construction method of foundation pit inclined support pile and auxiliary tool thereof

Abstract

The invention discloses a construction method of a foundation pit inclined support pile and an auxiliary tool thereof, and relates to the technical field of building foundation pit support construction. After foundation pit support piles are constructed, pile heads are broken down, so that rebars of anchorage sections are exposed, holes are drilled in the direction of holes of inclined support piles, the holes are divided by the foundation pit bottom elevation, hollow holes are formed in the upper parts, bearing holes are formed in the lower parts, and cement paste is injected into the bearingholes. Steel pipe piles or prefabricated pipe piles are used as the inclined support piles to be put on the support surface of the auxiliary device, the angle and position of the auxiliary device areadjusted, and the inclined support piles are put downwards until the bottoms of the inclined support piles are put in the bottoms of the bearing holes; the tops of the inclined support piles are anchored into crown beams, concrete is poured, and foundation pits can be dug after the design strength is reached. The operation of the prefabricated pipe piles is simpler and more convenient than that of concrete pouring, so that the construction period is short; the inclined support piles are put downwards by using the auxiliary device, so that the construction efficiency is high; and the inclinedsupport piles and a main body are combined into a whole, the soil pressure of the inclined support piles is transferred to soil at the bottom of the foundation pits, and the inclined support parts andthe middle parts of the foundation pits are dug at the same time, so that the total construction period of the foundation pit engineering is greatly shortened.

Description

technical field [0001] The invention relates to the technical field of building foundation pit support construction, in particular to a construction method of foundation pit diagonally braced piles and an auxiliary tool thereof. Background technique [0002] In the field of construction engineering, foundation pit engineering is becoming more and more common, and there are more and more support forms. The most common support forms are support piles (walls) + anchor rods (cables) + water-stop curtains, support piles ( Wall) + inner support + water-stop curtain two combined support forms. In foundation pit projects that are not suitable for anchor rods (cables), internal support structures are generally used. When the scope of the foundation pit is large and the support distance is long, it is more advantageous to use diagonal support structures instead of horizontal internal supports. In the conventional diagonal brace construction process, the soil in the middle of the foun...

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Problems solved by technology

[0003] The object of the present invention is to provide a construction method of diagonally braced piles in a foundation pit and its auxiliary tools, so as to solve the problem that the construction of diagonally braced piles and the excavation of the earthwork below the slope must be carried out after the construction of the engineering piles and the bottom plate in the middle of the foundation pit is completed, resulting in a delay in the construction period. The problem

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