How much supply would an amphibious force consume?

Are there models for the daily tonnage needed to land and sustain an amphibious force?

Yes; historical campaigns provide tables, but modern urban warfare would drive ammunition use much higher than those simple baselines.

Normandy and Falklands logistics tables provide historical examples of how planners calculated supply requirements. The amount required depends on the intensity and character of combat. Close urban fighting is expected to consume small-arms ammunition rapidly because of covering fire and frequent close-range engagements. A rough suggestion to triple estimated ammunition consumption conveys the scale of the anticipated demand, without supplying a calculated daily tonnage for a Taiwan invasion.