DYNAMICAL STABILITY OF RIGID STRUCTURES DURING EARTHQUAKES

DYNAMICAL STABILITY OF MASSIVE STRUCTURES LIKE CONCRETE GRAVITY WALLS OF DAMS DURING AN EARTHQUAKE IS A DIFFICULT PROBLEM OF SOIL MECHANICS. A THEORETICAL SOLUTION TO THIS PROBLEM, USING A DESIGN MODEL OF THE SYSTEM WITH MANY DEGREES OF FREEDOM AND THE FINITE ELEMENT METHOD WAS OBTAINED BY SINITSYN (1949) AND MEDVEDEV (1962). CALCULATIONS WERE MADE FOR A PROPAGATING WAVE TAKING INTO ACCOUNT THE LINEAR DISPLACEMENTS AND ROTATION OF THE STRUCTURE. THE GENERAL STABILITY OF A STRUCTURE DEPEND ON THE DYNAMICAL PRESSURE OF THE SOIL DUE TO SEISMIC WAVES. AN INVESTIGATION INTO THE MOVEMENT OF THE STRUCTURE-FOUNDATION SYSTEM ENABLE THE VALUE OF SHEAR FORCE ACTING ON THE FOUNDATION TO BE DETERMINED. THE SHEAR FORCE DEPENDS ON THE RELATION BETWEEN THE GENERAL PARAMETERS OF THE STRUCTURE AND THOSE OF THE FOUNDATION SOIL. THE STABILITY COEFFICIENT IS NOW DETERMINED MORE PRECISELY. IN-SITU EXPERIMENTS FACILITATE THE RECORDING OF THE PRESSURES APPLIED TO THE RIGID STRUCTURE PLACED ON A SOFT SANDY FOUNDATION AND THE VERIFICATION OF THEORETICAL ASSUMPTIONS. SEE ALSO IRRD ABSTRACT NO. 100334.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 199-205

Subject/Index Terms

Filing Info

  • Accession Number: 00236801
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: Jun 11 1974 12:00AM