Calculation method of operable window period proportion of pile driving barge

A calculation method and technology of operation window, applied in design optimization/simulation, instrumentation, electrical and digital data processing, etc., can solve the problems of harsh conditions of frequency domain calculation and time-consuming calculation in time domain, so as to reduce calculation time and reduce waiting time. time, effects of avoiding assumptions

Active Publication Date: 2021-11-19
CCCC THIRD HARBOR ENG
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Problems solved by technology

[0006] The key step in the calculation of the operable window period of the piling ship is the hydrodynamic calculation of the floating body. At present, the main methods of the hydrodynamic simulation analysis of the floating body are time-domain calculation and frequency-domain calculation. , and the time-domain calculation is extremely time-consuming

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  • Calculation method of operable window period proportion of pile driving barge
  • Calculation method of operable window period proportion of pile driving barge
  • Calculation method of operable window period proportion of pile driving barge

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with accompanying drawing.

[0044] see figure 1 , the calculation method of the operating window period ratio of the piling ship of the present invention comprises the following steps:

[0045] Step 1. Collect the wave data S every 3 hours when the piling ship is working in an open sea area W (ω), the wave data is expressed as a function of the wave frequency ω, and the wave data is the historical wave report data of 3 hours by 3 hours. The wave data is obtained through the local meteorological bureau or ocean bureau. swell formation;

[0046] Step 2, using the hydrodynamic analysis software to calculate the amplitude response operator RAO(ω) of each degree of freedom of the piling ship, the amplitude response operator is expressed as a function of wave frequency ω; the hydrodynamic analysis software is the ocean Engineering hydrodynamic analysis software, such as AQWA, WAMIT (Wave Analysis MIT ana...

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Abstract

The invention discloses a calculation method for the operable window period proportion of a pile driving barge. The calculation method comprises the steps that 1, wave data of the pile driving barge during construction in a certain open sea area is collected; 2, amplitude response operators of all freedom degrees of the pile driving barge are calculated through hydrodynamic analysis software; 3, a motion response energy density spectrum of each degree of freedom of the pile driving barge is calculated by adopting a frequency domain calculation method; 4, according to the motion response energy density spectrum of each degree of freedom of the pile driving barge, the amplitude corresponding to the harmonic wave of the motion response of each degree of freedom of the pile driving barge is calculated; 5, the motion response of each degree of freedom of the pile driving barge is calculated by adopting a time domain calculation method; and 6, the workable window period of the pile driving barge is calculated according to the workable threshold value balance of the pile driving barge. According to the invention, a time-frequency domain combined calculation method is adopted, the advantages of the two methods are reasonably utilized, the floating body dynamics of the pile driving barge is calculated, and an operable window of the pile driving barge is judged.

Description

technical field [0001] The invention belongs to the technical field of theoretical calculation of operating conditions of engineering ships, and in particular relates to a calculation method for the ratio of operating window periods of piling ships. Background technique [0002] In my country's offshore wind power construction projects, piling ships occupy a more important position. Since the construction of Donghai Bridge Wind Farm, the first offshore wind farm in China, there have been a large number of offshore wind turbines with high pile cap foundations using piling ships as construction equipment. The high pile cap foundation is a foundation type widely used in the field of port and waterway engineering. Generally, a foundation pile group is composed of 6 to 8 steel pipe inclined piles with a diameter of 2 to 3m, and a foundation pile group is set on the top of the foundation pile group. The pile caps cast by high-performance concrete connect the pile groups. Therefor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F119/14
CPCG06F30/20G06F2119/14
Inventor 杜宇高子予胡灵斌李飞鹏刘佳明王煦
Owner CCCC THIRD HARBOR ENG
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