Comprehensive pile foundation detection method based on unloading point method
A foundation pile detection and comprehensive detection technology, which is applied in foundation structure testing, foundation structure engineering, construction, etc., can solve the problems that the static and dynamic pile foundation detection technology has not been used on a large scale, and the explosive technology has a high degree of danger. Detection accuracy, improvement of detection accuracy, effect of improving detection accuracy
Active Publication Date: 2020-12-01
SOUTHEAST UNIV
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Due to the high degree of danger of explosive technology, static and dynamic pile foundation detection technology has not been used on a large scale in mainland China
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. The relative arrangements, expressions and numerical values of components and steps set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the...
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The invention discloses a comprehensive pile foundation detection method based on an unloading point method. The comprehensive pile foundation detection method based on the unloading point method comprises the steps that firstly the pile foundation detection is carried out on a detected foundation pile through employing a low-strain foundation pile detection technology, the preliminary judgment iscarried out on the integrity of the detected pile foundation, and a detected pile foundation disease position is given; then, a high-strain foundation pile detection technology and the unloading point method foundation pile detection technology based on rapid loading method pile foundation equipment are adopted for conducting pile foundation detection on the detected foundation pile; p-y curves are obtained and compared, and the bearing capacity of the pile foundation is comprehensively obtained; the displacement time-history curve, the acceleration time-history curve, the force time-historycurve and the force traveling wave curve which are obtained through detection are compared with the low-strain detection result of the detected pile foundation, and the disease type at the disease position is obtained through analysis, so that the pile foundation bearing capacity detection precision is improved, and meanwhile, a basis is provided for judging the specific type of pile foundation diseases.
Description
technical field [0001] The invention relates to the field of pile foundation detection, in particular to a pile foundation comprehensive detection method based on an unloading point method, which can realize pile foundation bearing capacity and pile body integrity detection. Background technique [0002] Pile foundation is one of the most important foundation forms in bridge engineering. Whether the bearing capacity of pile foundation meets the design requirements is related to the safety of bridge structure. At present, the testing of pile foundation bearing capacity mainly includes two main methods: static load test method and high strain dynamic test method. The static load test method is currently recognized as the most direct and reliable test method for testing the vertical compressive bearing capacity of foundation piles. However, this test method needs to be loaded by piles or anchor piles. The detection time is long and the detection cost is high, which has great a...
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Login to View More IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 戴国亮郭庆龚维明赵学亮竺明星万志辉
Owner SOUTHEAST UNIV