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Wave flow-structural object-seabed power coupling experimental simulating method and appts. thereof

A technology of experimental simulation and dynamic coupling, applied in measurement devices, instruments, scientific instruments, etc., can solve problems such as the inability to reproduce the stress state of marine structures

Inactive Publication Date: 2005-01-12
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the stability of marine structures built on the seabed under wave and current loads is a dynamic coupling issue between 'wave current-structure-seabed', which involves fluid mechanics, structural mechanics and rock and soil mechanics, etc. Various disciplines, only relying on the existing simulation experiment tanks and sandboxes and other experimental devices cannot reproduce the actual stress conditions of marine structures, and cannot provide accurate experimental reference data for the construction of marine structures

Method used

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  • Wave flow-structural object-seabed power coupling experimental simulating method and appts. thereof
  • Wave flow-structural object-seabed power coupling experimental simulating method and appts. thereof
  • Wave flow-structural object-seabed power coupling experimental simulating method and appts. thereof

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Embodiment Construction

[0025] figure 1 Shown is a simulated experimental water tank. One end of the water tank is equipped with a wave generating device 1 and a wave absorbing device 5 is installed at the other end of the water tank. The middle of the water tank is provided with a seabed simulation tank 6 of the same width as the water tank. The simulation tank 6 is filled with seabed simulation The soil body, the upper surface of the soil body is flush with the bottom of the water tank, the structure 7 is fixed in the simulated soil body of the seabed, the side wall of the water tank is composed of a frame 3 and glass 2, and a circulation system 4 is provided under the water tank.

[0026] As shown in FIG. 2, a slightly deeper groove 8 is provided on one side of the seabed simulation groove 6, and an observation window 9 is provided on the side wall of the seabed simulation groove 6 on the side of the groove 8.

[0027] image 3 , Figure 4 , Figure 5 Shown is a schematic diagram of the 6 simulatio...

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Abstract

Simulated structure is sank to simulated seabed in simulated experimental flume, detecting is carried out for dynamic load borne by structure, dynamic response of key position and change of dynamic shift by using sensor. Height of wave, speed of flowfield around structure is detected through wave gage, velocimete for particle image and Doppler laser velocimeter. Dynamic response of soil mass is detected by using pore water pressure sensor and earth-pressure cell. Detected data are collected and processed synchronistically through multichannel data acquisition system in order to reproduce actual stress state of the structure. The invention also discloses simulated experimental flume, where there is simulated seabed soil mass filled.

Description

Technical field [0001] The present invention relates to a dynamic coupling experimental simulation method and device of'wave-current-structure-seabed' for studying the stability of marine structures. Background technique [0002] In offshore oil exploitation and port engineering construction, it is necessary to ensure the stability of marine structures (such as offshore platforms, submarine pipelines, breakwaters, etc.) under the action of waves and currents. There are numerous accidents of marine structure instability caused by wave current loads every year. For example, my country’s Bohai Sea waters caused a serious situation in which the pipeline was suspended up to 2 feet from the seabed and the span reached 440 feet due to tidal erosion. Last year, my country’s Pinghu Oilfield suffered a serious accident of gas pipeline rupture due to erosion. [0003] Since the 1950s, starting from the requirements of shipbuilding, water conservancy, hydropower, shipping, marine engineering...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01N35/00
Inventor 高福平吴应湘郑之初杨兵周永李茜
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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