Glasgow City Council teams have started to dismantle the "highly dangerous" remains of the B-listed Union Corner building next door to the station.
The historic building, at the junction of Union Street and Gordon Street, was destroyed in an overnight inferno on Sunday after a fire took hold in a vape shop.
Network Rail said Central Station's high‑level platforms would remain closed. Low-level platforms
reopened to passengers earlier this week.
Ross Moran, route director at Network Rail Scotland, said: "We understand how disruptive this extended closure is for passengers and the wider city centre.
"The damage to the building beside the station is clearly significant and any phased reopening will depend on demolition work progressing to a stage that allows our engineers to safely return."