The invention discloses an intelligent prestressed member welded with a
macromolecule packaging
strain gauge and a manufacturing method of the intelligent prestressed member, and relates to a prestressed member and a manufacturing method of the prestressed member. The
strain gauge is pasted and fixed on the foil sheet, the bottom of the
polymer sealing plate is pasted on the foil sheet, the cavity of the
polymer sealing plate covers the
strain gauge, and the cavity is filled with an
adhesive; and the foils are fixed on the prestressed tendons through
spot welding by a
spot welding machine. The method comprises the following steps: A, preparing; b, installing a strain gauge; c, mounting a macromolecular sealing plate: covering the strain gauge with a cavity of the macromolecular sealing plate, and bonding the cavity of the macromolecular sealing plate on the foil; d, pouring glue; e,
drying:
drying the two-component
epoxy resin adhesive; and F,
spot welding is conducted, specifically, the foil pieces are fixed to the prestressed tendons in a spot
welding mode. According to the invention, debonding caused by glue aging can be avoided, a relatively accurate
signal value can be obtained, the offset of the strain gauge can be limited, the
mechanical property of the prestressed
tendon can be ensured, and the device and the method have important significance for monitoring the prestressed member.