Assets/Block X-12/MP-A Monopod

Simulation · What-if scenario

Live · 13/13 sensors online—

SimulationIndicative model · not live data

Sway ×

f₁ 0.405 Hzsway ±120 mmUC 0.78

Scenario unity check

0.200.400.600.851.00

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Scenario

100-year storm

Significant wave height6.0m

Peak period11.5s

Heading320°

Surface current1.20m/s

Wind speed (1-h mean)30.0m/s

Scour depth1.8m

Added topside mass0t

Marine growth50mm

Peak UC 0.78 at EL -62 · fatigue rate ×12

Measure	Today	Scenario	Δ
1st natural frequency · Hz	0.4053	0.4053	—
Dynamic amplification · ×	1.079	1.048	-2.9%
Base shear · MN	2.07	5.34	+158%
Overturning moment · MNm	88	216	+145%
Deck sway, amplitude · mm	51	120	+134%
Deck offset, mean · mm	6	22	+272%
Deck tilt, peak · °	0.049	0.121	+148%
Peak unity check	0.40	0.78	+96%

Peak unity check

Stays below UC 1.0 up to 6 m of scour in this simplified model.

1st natural frequency, Hz

Frequency drops 2% below design at about 1.3 m of scour.

Cantilever on an effective fixity 12 m below the seabed, calibrated to 0.418 Hz.
Morison wave load on column, conductors and risers; design wave H = 1.86 Hs.
Indicative only. Real answers come from the engineers' FE model.
Assumptions: docs/11-simulation.md