Prestress composite beam and masonry structure house prestress demolition method

The invention relates to the technical field of building construction, in particular to a prestressed composite beam and masonry structure house prestressed demolition method.The first aspect is that the masonry structure house prestressed demolition method comprises the following construction steps that surface scabbling is conducted on an original concrete main beam; prestressed tendons are additionally arranged; setting a horizontal operation line; shear steel bars and tie bars are additionally arranged; carrying out anchorage device reinforcement; calibrating a fixed point position; the prestressed composite beam is obtained; chiseling the outer wall of the original concrete column; the sectional area of the original concrete column is increased; a combined column is obtained; and dismantling the middle reinforced concrete column. On the second aspect, the prestressed composite beam is applied to a masonry structure house prestressed demolition method. The original building structure can be structurally t