Construction method for mounting floor support plate without dismounting bottom die and synchronously inserting beam and slab reinforcing steel bars

The invention relates to the technical field of building floor support plate construction, and discloses a construction method for mounting a floor support plate without dismantling a bottom die and synchronously inserting beam and slab reinforcing steel bars, which comprises the following steps: S1, erecting a support frame body; s2, beam formworks and floor keels are installed; the method comprises the steps of (S1) building bearing plates are installed in a partitioned mode at intervals, and beam and plate steel bars are synchronously inserted in a penetrating mode; (S2) partition construction is conducted; (S3) partition construction is conducted; (S3) the building bearing plates in a first batch of installed beam spans are installed, and beam steel bars and plate bottom steel bars are inserted and bound in a penetrating mode; (S3.3) the first batch of installed beam spans are installed, and plate surface steel bars and additional steel bars are installed in the first batch of installed beam spans are ins