Existing building foundation pile projection detection method

Abstract

The invention discloses an existing building foundation pile projection detection method. The existing building foundation pile projection detection method comprises the following steps: (1) detection points are arranged on a foundation pile of an exiting building to be detected; (2) signal receiving devices are respectively mounted in a column top surface projection range and a pile top surface projection range and on the detection points of a column side surface and a pile side surface; (3) the signal receiving devices are connected with signal processing devices; and (4) shock excitation signals are instantly given to the edges of the detection points; and the signal receiving devices collect reflection signals and input into the signal processing devices for processing to obtain a time interval curve chart and an amplitude spectrum. The existing building foundation pile projection detection method has the following advantages: the measurement can be directly performed on the foundation pile of the existing building; the large-area and high-strength construction is not needed; the foundation pile and the existing building are not required to be damaged; the vertical (longitudinal) shock excitation detection is adopted to quickly, accurately, economically and nondestructively obtain the conditions of the foundation pile; the potential safety hazard is eliminated; and the existing building foundation pile projection detection method is wide in application range and high in precision.

Description

technical field [0001] The invention relates to the field of detection of foundation piles of buildings, in particular to a projection detection method of foundation piles of existing buildings. Background technique [0002] As we all know, the quality inspection of all building foundation piles in my country at present is carried out when the foundation piles of the building have just been constructed and there is no structure on the top surface of the piles. However, after a large number of buildings are completed, the foundation piles under the existing buildings have been used for load-bearing for decades, especially special buildings such as high-rise buildings, bridges, ports, docks, viaducts, wind power towers, chimneys, etc. Withstand overload, some even withstand earthquake, typhoon, flood, debris flow, uneven side slope pressure, close construction vibration, vehicle vibration, vehicle overload, vehicle and ship impact, dry and wet zone erosion, long-term chemical ...

AI Technical Summary

Problems solved by technology

[0003] At present, the elastic wave CT detection method is the main method for inspecting the quality of foundation piles under existing buildings, but one detection hole must be drilled on both sides of the inspection foundation pile, and the inspection is very time-consuming, laborious, and expensive; The height of the bottom layer of the object is low, and it is impossible to drill and detect; some piles even need to drill through the caps, etc., so generally only a few piles or a few piles can be randomly inspected, the representativeness is low, and it is difficult to popularize

[0004] The hidden dangers to the quality and safety of existing building foundation piles exist objectively, and the serious safety hazards that exist cannot be ignored. However, there is currently no economical, fast, and non-destructive quality detection method for existing building foundation piles for testing.

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