Single-pile cyclic loading model test system capable of preparing anisotropic sandy soil sample

A cyclic loading and anisotropic technology, which is used in the preparation of test samples, the use of repetitive force/pulsation force to test the strength of materials, etc., can solve the problem of inability to prepare anisotropic sand samples, high cost of centrifuge testing, Equipment test error is large and other problems, to achieve the effect of high degree of automation, convenient operation and high precision

CN106840805AActive Publication Date: 2017-06-13TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-06-13

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Abstract

The invention relates to a single-pile cyclic loading model test system capable of preparing an anisotropic sandy soil sample. The single-pile cyclic loading model test system comprises a model casing preparation device, a single-pile horizontal cyclic loading device and a slide rail, wherein the model casing preparation device comprises a model casing mechanism, a sand pouring mechanism and a sand scattering mechanism; the model casing mechanism is connected with the slide rail in a sliding manner; the sand pouring mechanism and the single-pile horizontal cyclic loading device are sequentially erected above the slide rail; the sand scattering mechanism is arranged on the sand pouring mechanism. Compared with the prior art, the single-pile cyclic loading model test system can finish preparations of different anisotropic sandy soils, the sand scattering height can be adjusted to change the compactness of the sample, and a hopper can be mechanically operated in the sand scattering process, therefore, both time and labor are saved, and the uniformity of the sample is guaranteed; accurate control and continuous and stable output of the horizontal cyclic load in the single-pile cyclic model test can be realized; a support frame for sand scattering can also serve as a pile sinking device; a sample preparation device and a loading test device are integrated, the functions are complete and the operation is simple and convenient.
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Description

technical field

[0001] The invention relates to the technical field of geotechnical engineering physical simulation, in particular to a single pile cyclic loading model test system capable of preparing anisotropic sand samples. Background technique

[0002] In recent years, my country has accelerated the pace of development and utilization of offshore wind power projects. The large-diameter single-pile foundation has become the foundation form of offshore wind farms with the highest utilization rate for offshore wind farms due to its advantages of simple installation, fast construction speed, and good economy. The literature "Doherty P, Gavin K. The shaft capacity of displacement piles in clay: Astate of the art review. International Journal of Geotechnical and Geological Engineering, 2011, 29(4): 389-410" pointing out that 75% of the built offshore wind power foundations are large-diameter piles Pile foundation, with the rapid development of my country's offshore wind power c...

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0039] Such as figure 1 As shown, a single pile cyclic loading model test system capable of preparing anisotropic sand samples includes a model box preparation device that can change the anisotropy of the soil (that is, the deposition angle), and a servo Controlled single pile horizontal cycle loading device 1 and slide rail 2, the model box preparation device includes: model box mechanism 3 with adjustable inclination angle, sand rain method mechanism with adjustable height and sand spreading mechanism with horizontal reciprocating movement, model box The mechanism 3 is slidingly co...