Ocean platform floatover installation impact simulation analysis method

A simulation analysis, offshore platform technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as the inability to directly simulate the rigid collision between the floating barge and the jacket of the offshore platform, and achieve great application value. , to achieve the effect of simulation and analysis to ensure the effectiveness

Active Publication Date: 2014-03-05
OCEAN UNIV OF CHINA
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Problems solved by technology

[0005] In order to solve the problem that the existing large-scale finite element analysis software ANSYS/AQWA cannot directly simulate the rigid collision between the offshore platform floating installation barge

Method used

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  • Ocean platform floatover installation impact simulation analysis method
  • Ocean platform floatover installation impact simulation analysis method
  • Ocean platform floatover installation impact simulation analysis method

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Embodiment Construction

[0033] The large-scale finite element analysis software ANSYS / AQWA does not have the function of direct collision simulation. The software only provides a fender unit (ie fender unit), which can analyze the force and deformation of the fender unit during the movement of large floating structures question.

[0034] Based on the above, the present invention proposes a method for simulating a collision of an offshore platform floatover installation, which includes the following steps:

[0035] A. According to the design drawings, based on the large-scale finite element analysis software ANSYS, establish the coupling analysis model of the jacket-floating installation barge-mooring system;

[0036] B. Set the spherical fender unit;

[0037] B1. Set a spherical fender unit at the center of the jacket leg, and set the radius of the spherical fender to the radius of the leg;

[0038] B2. Obtain the force-deformation curve of the jacket leg by using ANSYS structural static analysis a...

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Abstract

The invention provides an ocean platform floatover installation impact simulation analysis method. Impact force simulation is finished through existing large analysis software ANSYS/AQWA, structural modeling capacity, large floating body water power analysis capacity and mooring system coupling power analysis capacity of powerful existing software is fully utilized, and rapid simulation and analysis of impact force between a floatover installation barge and a jacket are effectively achieved. According to the ocean platform floatover installation impact simulation analysis method, rigid impact force can be rapidly and accurately simulated in the floatover installation process, and the method provides a scientific basis for floatover installation design of an ocean platform. Through the change of a stress-deformation curve of fenders, other types of impact simulation problems can be also analyzed, and high application value is achieved.

Description

technical field [0001] The invention relates to an ANSYS / AQWA-based collision simulation analysis method for float-over installation of an ocean platform, which belongs to the technical field of ocean engineering installation. Background technique [0002] With the continuous increase in the development of offshore oil and gas resources, offshore platforms are developing in the direction of large-scale and comprehensive, and the overall weight of the platform is also increasing. The offshore platform structure is divided into the lower supporting structure (jacket) and the upper module. Offshore platform structures are generally prefabricated onshore and then shipped offshore for installation. At present, there are mainly two types of offshore installation methods for offshore platforms: crane ship hoisting and float-over installation. Due to the limitations of many factors such as the hoisting capacity of the crane ship and the construction operation environment, large cr...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 王树青王文娟李华军张敏
Owner OCEAN UNIV OF CHINA
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