The invention discloses
electromagnetic interference preventing embedded type multifunctional piezoelectric intelligent aggregate of a concrete structure, which comprises a
metal shielding base, a
metal shielding cover, d33 mode piezoelectric
ceramic chips, an insulating
rubber ring, a conducting strip, an
epoxy resin insulating layer, a shielding lead and a shielding joint, wherein positive electrodes of the two piezoelectric
ceramic chips are arranged face to face; the conducting strip is placed between the positive electrodes of the two piezoelectric
ceramic chips; the conducting strip is welded with the positive
electrode of the shielding lead to form a whole; a
peripheral shielding line of the shielding lead is welded with the
metal shielding base to form a whole; the side surfaces of the piezoelectric ceramic chips are banded by utilizing the insulating
rubber ring; the metal shielding base is connected with the metal shielding cover to form a whole through a
screw thread, and certain precompression is applied to the upper surface and the lower surface of the whole; after the connecting parts of the metal shielding base and the metal shielding cover are welded, an
epoxy resin insulating waterproof layer is coated on a metal shell; and after the metal shell is air-dried after 24 hours, the piezoelectric intelligent aggregate is formed. Certain coarse sand can be pasted tothe metal shell when the
epoxy resin is coated on the outer part of the metal shell, so as to guarantee good compatibility between a sensor and concrete. The piezoelectric intelligent aggregate has the advantages of remarkable
shielding effect, interference exemption of a concrete
internal stress field, overall process monitoring of concrete internal dynamic damage evolution, explicit force bearing path, simple structure and low construction cost.