Multi-wave-condition large-size fixed maritime work platform horizontal force calculation method
A calculation method and large-scale technology, applied in marine engineering, bridge engineering, and coastal fields, can solve problems such as large amount of calculation, unfavorable popularization and application, and heavy computing tasks for computing personnel, achieving good checking effect, simple calculation process, and saving. Effects of time cost and trial cost
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Embodiment 1
[0056] Example 1: Regular waves determined by wave height and period
[0057] In this embodiment, a rectangular offshore platform is selected as the implementation object. The top elevation of the offshore platform is +6m, the bottom elevation of the offshore platform is -2m, the seabed elevation is -21.5m, the static water level is +3.5m, and the incident wave height is set to 2m, see Table 1 for specific implementation groups.
[0058] Table 1 Implementation group times
[0059]
[0060] Since this embodiment is a regular wave whose wave height and period are determined, the horizontal force calculation formula of the large-scale offshore platform in step 2 is directly used to calculate the horizontal force of the offshore platform under the condition of regular waves. Since the flow velocity is 0 during the test, and the offshore platform There are no other structures on the top and bottom, so there is no need to go through steps 3 and 4 for correction. image 3 For th...
Embodiment 2
[0061] Example 2: Irregular waves with known combined cycle-wave height distribution
[0062] Figure 4 is the joint distribution map of period and wave height in a sea area, h in the figure is the actual wave height divided by the average wave height, and t is the actual period divided by the average period. In this embodiment, the offshore platform adopts a rectangular offshore platform with a length of 40m (1 / 2 length b of the offshore platform is 20m), a width of 40m, a top elevation of the offshore platform of +6m, and a bottom elevation of -2m. The static water level is +3.5m, and the seabed elevation is set to -21.5m. In this embodiment, the horizontal force of the offshore platform is calculated within the curve range of the equal probability density P=0.01.
[0063] According to the irregular wave calculation steps, set the cycle interval to 0.5s, such as Figure 4 As shown, in the horizontal method, the range of the equal probability density P=0.01 curve is divide...
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