STRUCTURAL RESPONSE TO SEISMIC MOTION

SEISMIC WAVES FROM EXPLOSIVES ARE USUALLY ELASTIC VIBRATIONS OF THE EARTH. ALTHOUGH SEVERAL TYPES OF VIBRATIONS HAVE BEEN IDENTIFIED, FINITE PARTICLE MOTIONS ARE ACTUAL COMPONENTS OF ELASTIC VIBRATIONS. THESE VIBRATIONS TRAVEL AT HIGH VELOCITIES AND ARE RECORDED BY SEISMOGRAPHS WHEN GENERATED BY EXPLOSIVES. EQUATIONS ARE PRESENTED SHOWING (1) THE RELATIONSHIPS BETWEEN PARTICLE ACCELERATION, VELOCITY, DISPLACEMENT, AND FREQUENCY; (2) THE EMPIRICAL RELATIONSHIP FOR QUARRY BLASTING; AND (3) THE FUNDAMENTAL MODE OF VIBRATION. A DISCUSSION FOLLOWS ON A DEMONSTRATION OF THE RELATIVE RESPONSE OF A SINGLE-DEGREE-OF-FREEDOM STRUCTURE TO EXCITATION OF GROUND MOTION. FINALLY, RECOMMENDATIONS IN THE SIZING OF CHARGES ARE PRESENTED IN ORDER TO AVOID STRUCTURAL DAMAGE FROM CONVENTIONAL EXPLOSIVES USED FOR DEMOLITION OR EXCAVATION WORK.

  • Authors:
    • Nicoletti, J P
    • Keith, J M
  • Publication Date: 1972-10

Media Info

  • Features: Figures;
  • Pagination: p. 326-9
  • Serial:
    • Military Engineer
    • Volume: 64
    • Issue Number: 421
    • Publisher: Society of Military Engineers

Subject/Index Terms

Filing Info

  • Accession Number: 00209796
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 7 1972 12:00AM