Steel tube centrifugal concrete pipe pile integrality endoscopic detection method

Abstract

The invention relates to a detecting method in geotechnical engineering and discloses an endoscopic detecting method of the integrity of a centrifugal concrete tubular pile of a steel pipe. The method of the invention comprises the following steps: a camera is suspended inside an orifice of the centrifugal concrete tubular pile of the steel pipe, wherein, the camera is connected with a computer through a waterproof cable, further connected with a scale string tape, and used for obtaining information inside the tubular pile orifice, displaying camera images on a computer screen, and storing the camera images inside a storage; the endoscopic camera images are processed so as to obtain information of underground water and concrete core as well as information of concrete surface quality inside the tubular pile orifice; recorded construction materials are input so as to obtain piling starting and halting information, recorded geological materials are input so as to obtain stratigraphic distribution and underground water information, and characteristic parameters of the detected pile are input; the computer implements the processing of the information, summarizes total defects of the detected pile, and calculates the integrity factor Beta of the detected pile. The endoscopic detecting method of the invention has the advantaged of convenient in-site operation, simple device structure and lower cost.

Description

technical field

[0001] The invention relates to a geotechnical engineering detection method, in particular to a detection method for the integrity of steel pipe centrifugal concrete pipe piles. Background technique

[0002] Steel pipe centrifugal concrete pipe pile is a newly developed concrete pipe pile. Due to the small diameter and hollow section of the pipe pile, there is no detection method for the integrity of the pile body. The industry standard of the People's Republic of China JGJ106-2003 "Technical Specifications for Building Pile Foundation Inspection" provides core drilling method, acoustic transmission method, low-strain dynamic measurement method and high-strain dynamic measurement method to detect the integrity of the pile body. The core drilling method is to directly detect the condition of the concrete of the pile body and the foundation of the pile end by drilling and taking cores along the axial length of the pile body, and it is only suitable for solid co...

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