Prepressing method for detecting bearing capacity of steel pipe pile

Abstract

The invention relates to a steel pipe pile bearing capacity detection prepressing method, and relates to the technical field of pile bearing capacity detection.The method comprises the following steps that S1, a bearing disc is placed, specifically, the bearing disc is placed on a steel pipe pile to increase the contact area between a heavy hammer and the steel pipe pile; s2, pre-pressing is conducted, specifically, the bearing disc and the steel pipe pile are connected together in a clamped mode through a pre-pressing device; s3, stamping is conducted, specifically, a stamping device is started to drive a heavy hammer to move to stamp the bearing disc; and S4, data recording: recording and analyzing the data to obtain a result. The contact area between the heavy hammer and the steel pipe pile is increased through the bearing disc, and meanwhile, the bearing disc and the steel pipe pile are connected together through the pre-pressing device, so that the probability that the bearing disc moves or is separated from the steel pipe pile after being punched by the heavy hammer is reduced, the probability of deformation of the steel pipe pile is reduced, and the quality of the steel pipe pile is improved.

Description

technical field [0001] The present application relates to the technical field of bearing capacity testing, and in particular to a preloading method for testing the bearing capacity of steel pipe piles. Background technique [0002] In order to ensure the safety and stability of steel pipe pile construction, it is necessary to test the bearing capacity of steel pipe piles. [0003] High strain detection is a detection method for judging the vertical compressive bearing capacity of a single pile and the integrity of the pile body. During the experiment, a heavy hammer is used to impact the top of the pile, and the velocity and force time history curve of the top of the pile is actually measured, and analyzed by wave theory. . [0004] In view of the above-mentioned related technologies, the inventor found that there are the following defects: the top of the steel pipe pile is tubular, so the impact force of the weight on the top of the steel pipe is relatively large, and the ...

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor found that there are the following defects: the top of the steel pipe pile is tubular, so the impact force of the weight on the top of the steel pipe is relatively large, and the contact area between the weight and the top of the steel pipe pile is small, resulting in the steel pipe The top of the pile is easily deformed, which reduces the quality of the steel pipe pile

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