Cast-in-situ bored pile static pressure test pile head one-time pouring construction method

Abstract

The invention discloses a cast-in-situ bored pile static pressure test pile head one-time pouring construction method, and belongs to the field of cast-in-situ bored piles. The cast-in-situ bored pilestatic pressure test pile head one-time pouring construction method comprises the following steps that S1, a hole forming steel casing is installed in a cast-in-situ bored pile formed hole; S2, the size of a reinforcement cage is designed; S3, the reinforcement cage is installed in the cast-in-situ bored pile formed hole; S4, concrete is poured into the formed hole; S5, a pile head steel casing is installed on the ground, and the hole forming steel casing is pulled out; S6, the concrete is continuously poured and vibrated to be compact to the top of the pile head steel casing; S7, the pile head is subjected to slurry collection and trowelling, and the cast-in-place pile is maintained; and S8, a static load test is carried out by using static load test equipment. According to the cast-in-situ bored pile static pressure test pile head one-time pouring construction method, the one-time pouring of the pile head of the cast-in-situ bored pile is adopted to replace a secondary pouring manufacturing process in the prior art, so that the construction period is shortened, the waste of materials is reduced, and the labor cost is reduced.

Description

technical field [0001] The invention relates to the field of bored cast-in-place piles, in particular to a one-time pouring construction method for the static pressure test pile heads of bored cast-in-place piles. Background technique [0002] In the process of testing the single pile bearing capacity of bored piles through static load tests, in the prior art, the bored piles are constructed first, and the piles are excavated after the pile concrete reaches a certain strength (generally 21 days of maintenance). After the pile head concrete is chiseled to the dense concrete, steel bars, mesh sheets and steel casings are installed, and then concrete with a higher level of strength is poured, and finally cured to the design strength, and the pile head concrete meets the requirements before proceeding. Static load test. The prior art has a long construction period, wastes materials and increases labor costs. Contents of the invention [0003] In order to overcome the defects...

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Problems solved by technology

The existing technology has a long construction period, wastes materials and increases labor costs

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