The invention relates to a full-life-cycle indoor variable space building
system. The full-life-cycle indoor variable space building
system comprises a novel
structure system and a building space
layout. The novel
structural system comprises a core tube, steel-concrete composite structural floors are connected to the two sides of the core tube, each steel-concrete composite structural floor is provided with a floor
structural unit and a hidden beam frame for supporting the floor
structural unit, the hidden beam frames and the floor structural units form an integrated structure by pouring concrete, and the hidden beam frames are connected with the core tube. The hidden beam frame is connected with a plurality of frame supporting columns, and the frame supporting columns are separated from the outer wall and the separating wall. The building space
layout comprises the steps that a water utilization space is centrally arranged on one side of a
living space, a large-space non-water utilization space is arranged on the other side of the
living space, a
vestibule backcourtyard and an equipment platform are arranged on the outer side of the outer wall of the centralized water utilization space, and a shared facility
tube well is arranged. According to the invention, global variation of the
living room space, the water utilization space and the balcony space in the whole life cycle of families and residences is realized.