Maritime work foundation multi-directional loading test system and method capable of simulating wind-wave effect

A test system and multi-directional loading technology, which is applied in the field of multi-directional loading test system for offshore foundations simulating wind-wave action

Active Publication Date: 2019-11-12
SHANDONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no model test equipment that can realize long-term loading of foundations under different loading angles and continuously changing conditions of wind and wave loads with different load frequencies and load amplitudes at the same time.

Method used

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  • Maritime work foundation multi-directional loading test system and method capable of simulating wind-wave effect
  • Maritime work foundation multi-directional loading test system and method capable of simulating wind-wave effect
  • Maritime work foundation multi-directional loading test system and method capable of simulating wind-wave effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0085] In this example, the test system includes two sets of circular model test boxes 1 made of stainless steel, and the diameters of the model test boxes are 1.0 m and 1.5 m respectively.

[0086] The model test chamber is equally divided into 3 rings, including 1 bottom ring and 2 standard rings, both of which are 0.5m in height. The bottom ring model box can be used alone, and the standard ring can be superimposed on the bottom ring to meet the test requirements of different scales and different heights of foundation models. The end of each ring model box is welded with a flange, which is used for the connection of each ring model box. The flange is slotted, and an O-ring is installed to ensure the watertightness of the model box.

[0087] In this example; Reaction frame 18 height is 4m. Two steel gear turntables 9 and 10 are installed respectively along the height direction of the loading reaction frame 18, and the diameter of the gear turntables 9 and 10 is 2m. Power ...

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Abstract

The invention provides a maritime work foundation multi-directional loading test system and method capable of simulating a wind-wave effect. The maritime work foundation multi-directional loading testsystem comprises a control system, a servo electric controller, a loading reaction frame, a model test box and a load simulation mechanism; the load simulation mechanism outputs a simulated load to afoundation model in the model test box; the load simulation mechanism comprises a vertical actuator used for simulating a vertical load, and a horizontal actuator used for simulating a marine wind load and a marine wave load; the horizontal actuator comprises first horizontal actuators fixed to rotating discs for simulating the different loading directions of the wave load, and second horizontalactuators fixed to rotating discs for simulating the different loading directions of the wind load; and different loading modes can be simulated by the rotating discs for simulating the different loading directions of the wave load and the rotating discs for simulating the different loading directions of the wind load. Under different model scales, long-term loading of a marine engineering structure foundation of the wind and wave loads with the different load frequencies and amplitudes at any loading angle and under continuous change of the loading angles can be simulated.

Description

technical field [0001] The invention relates to the technical field of test equipment, in particular to a multi-directional loading test system and method for marine foundations that simulate wind-wave action. Background technique [0002] The loads on the foundation of marine engineering structures during their service are very complicated. In addition to the self-weight and superstructure, they are also subjected to hundreds of millions of long-term horizontal wind and wave long-term cyclic loads. The amplitude, frequency and direction of each load All are different and change from time to time. Under long-term cyclic loading, the foundation will undergo cumulative deformation and stiffness changes. When the cumulative deformation exceeds the limit state allowable value of the normal use of the foundation, the fan must stop working and cannot continue to be used. The change of foundation stiffness under long-term load will cause the natural frequency of wind power struct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00G01M99/00
CPCE02D33/00G01M99/007
Inventor 李大勇张雨坤陈福全白云黄凌昰
Owner SHANDONG UNIV OF SCI & TECH
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