Device for detecting pull-out resistance of foundation pile and quality of pile body

Abstract

The invention provides a device for detecting pull-out resistance of a foundation pile and quality of a pile body. The device comprises a working platform, a bracket and a beam, wherein the beam is hinged on the bracket, a heavy hammer assembly is arranged at one end of the beam in the left-right direction, a pile pulling assembly is arranged at the other end of the beam, and a gyroscope for detecting the horizontal of the beam is arranged on the beam. According to the device, through the hinged design of the beam and the bracket, lifting mechanisms at the two sides of frame body, namely jacks, lift the heavy hammer to a certain height and fall down, the heavy hammer impacts a main beam below, the pile pulling assembly rises by utilizing a lever principle, the upward impact force is exerted on a detected pile, the impact force borne by the detected pile is measured through the pile pulling assembly, and the pull-out resistance of the foundation pile and the quality of the pile body aredetected.

Description

technical field [0001] The invention relates to construction engineering testing equipment, in particular to a testing device for foundation pile pullout resistance and pile body quality. Background technique [0002] With the continuous development of social economy, people are more and more developing and utilizing underground space, especially in high-rise buildings, large-scale underground garages are often built. Underground garages are subjected to large buoyancy of groundwater during construction and use, and uplift piles are often set to offset the upward buoyancy of underground garages generated by groundwater. The test of bearing capacity of uplift piles generally adopts static load test, which takes a long time and costs high. Generally, the total number of uplift piles in underground garages ranges from a few hundred to as many as several thousand. When testing, 1% of the total number of engineering piles is sampled. The number of random inspections is large, th...

AI Technical Summary

Problems solved by technology

The bearing capacity test of uplift piles generally adopts static load test, which takes a long time and costs high

Generally, the total number of uplift piles in underground garages ranges from a few hundred to as many as several thousand. When testing, 1% of the total number of engineering piles is used for random inspection. The number of random inspections is large, the cost is high and the test period is long, which affects the progress of the project.

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