Stable bucket-shaped foundation sinking negative pressure testing device
A technology of cylindrical foundation and test device, which is applied in the test of foundation structure, foundation structure engineering, construction, etc. It can solve problems such as difficulty in ensuring subdivision, inability to realize step-by-step pressure application, and difficult control of negative pressure, reaching the scope of application wide, improve practicality and flexibility, prolong the effect of time
Active Publication Date: 2015-02-11
TIANJIN UNIV
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Problems solved by technology
[0004] The object of the present invention is to provide a kind of can sub-compartment tube for the problem that the negative pressure is not easy to control during the submersion test in the prior art, it is impossible to realize step-by-step pressure application and it is difficult to ensure the stability of negative pressure applied between each sub-compartment. Type foundation stable subsidence negative pressure, simple structure, easy to control test device and test method
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[0038] The present invention will be further described below in conjunction with the accompanying drawings.
[0039] The present invention is a test device for stabilizing the sinking negative pressure of a cylindrical foundation, see Figure 1 ~ Figure 3. The negative pressure regulating tank 2 is connected to the spare regulating tank 3 through the connecting pipeline II9 and the spare regulating tank control valve 13. The spare regulating tank 3 expands the volume of the test device and improves the ability of negative pressure stable regulation; the spare regulating tank 3 can also Continue to expand as needed. The negative pressure regulating tank 2 and the model control valve 12 are connected through the subdivision 1 connecting pipeline 17, the subdivision 2 connecting pipeline 18, the subdivision 3 connecting pipeline 19, the subdivision 4 connecting pipeline 20, and the subdivision 5 connecting pipeline 21. Subdivision 6 connecting pipeline 22, and subdivision 7 con...
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The invention discloses a stable bucket-shaped foundation sinking negative pressure testing device. The operating principle is that: a vacuum pump is used for extracting gas in a negative pressure regulating tank and a standby regulating tank to enable negative pressure values in the tanks to arrive at 0- -0.09MPa, and then a control valve and the vacuum pump are closed; a multi-path control value communicated with all subdivisions of a bucket-shaped foundation model is opened so as to enable negative pressure in the all subdivisions to keep stable rapidly; and a required negative pressure value is reached through repeated stepwise pressing. The stable bucket-shaped foundation sinking negative pressure testing device can stabilizing negative pressure of a test model, is simple in structure, flexible to use and convenient to control and overcomes the defect that negative pressure in the prior art is difficult to control, stepwise loading cannot be achieved, and stability of negative pressure exerting among the subdivisions is difficult to guarantee.
Description
technical field [0001] The invention relates to a test device for marine and port engineering, in particular to a novel test device for stabilizing the negative pressure of composite cylindrical foundation compartments. Background technique [0002] The barrel foundation was first successfully applied in Norway in 1994. It is a new type of offshore platform foundation. It looks like a barrel upside down in the soil, and is essentially a skirt foundation. Due to the advantages of simple construction, reusability and low cost, the cylindrical foundation is known as "the dawn of a new era of jacket foundation engineering technology". In recent years, the cylindrical foundation has also been gradually used in port channel engineering and offshore wind power fields. The composite cylindrical foundation is a new type of cylindrical foundation structure suitable for offshore wind turbine structures. Different from the traditional cylindrical foundation, the interior of the cylindri...
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IPC IPC(8): E02D33/00
Inventor 练继建陈飞王海军刘昉
Owner TIANJIN UNIV