Testing apparatus for automatically measuring marine structure anchoring system stiffness

Abstract

The invention provides a mooring system rigidity automatically measuring and testing device of an ocean structure and belongs to the ocean engineering technical field. The device comprises a model movement control component, a model connecting component and a turntable, wherein, the model movement control component comprises two convex steel plates, two straight circular tubes, two parallel angleirons, five sliding blocks, a servomotor and a guide screw, the two sides of the lower ends between the two convex steel plates are welded with the two parallel straight circular tubes, the two sidesof the upper ends between the two convex steel plates are welded with two parallel angle irons, the guide screw is arranged between the two convex steel plates, the servomotor is positioned outside the convex steel plate on the right side and is welded with the extension parts of the two parallel angle irons, the servomotor is connected with the guide screw by a pin, the guide screw is sleeved bya sliding block, the lower end of the sliding block is welded on a square steel plate, the four corners of the square steel plate are welded with the other four sliding blocks with the same forms, thefour sliding blocks are respectively sleeved on the two straight circular tubes. The invention overcomes the difficulty of the manual operation, can automatically measure the rigidity of the mooringsystem in the water and corresponds with the real working environment.

Description

technical field [0001] The invention relates to a measuring device in the technical field of ocean engineering, in particular to an automatic stiffness measurement test device for a mooring system of an ocean structure. Background technique [0002] When conducting physical model tests on the platform system and FPSO (floating production and storage system), it is very important to simulate the mooring system correctly. Ideally, it is necessary to ensure that the physical properties of each material segment of the mooring chain meet the requirements. However, in actual operation, important characteristics such as the geometrical dimensions of the mooring chain, weight per unit length in water, and stiffness are relatively easy to simulate. broken. To check whether a mooring chain model meets the requirements is mainly to see whether its top tension-displacement characteristics, that is, the static characteristics meet the expected values. For the entire mooring system, it i...

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Problems solved by technology

[0005] All the above methods have common disadvantages: measuring the mooring chain stiffness in the air will inevitably increase the error due to different environmental media, and the influence of buoyancy in water is not considered; the mooring stiffness in different directions in the horizontal plane cannot be measured, nor can it be realized The two-dimensional movement of the model in the horizontal plane; the above methods all require manual operation, and there are interruptions in the process, which is troublesome and inevitably increases the error caused by human operation; the data obtained by the above measurement methods are only some discrete numerical points, and curve fitting is still required and get the force-displacement curve

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