A METHOD FOR THE CALCULATION OF SETTLEMENTS, CONTACT PRESSURES, AND BENDING MOMENTS IN A FOUNDATION INCLUDING THE INFLUENCE OF THE FLEXURAL RIGIDITY OF THE SUPERSTRUCTURE

A METHOD IS DEVELOPED FOR THE ANALYSIS OF FOUNDATION BEAMS AND FOUNDATION SLABS, WHICH ARE FLEXIBLE IN ONLY ONE DIRECTION, THE RIGIDITY OF THE SUPERSTRUCTURE BEING TAKEN INTO ACCOUNT. STRUCTURES WITH VARIOUS DEGREES OF RIGIDITY INCLUDING THE PERFECTLY FLEXIBLE AND THE PERFECTLY RIGID CASES ON ANY SUBSOIL ARE INVESTIGATED, USING UNIT SETTLEMENTS, EXPRESSED IN MATRIX FORM. THE METHOD GIVES THE CONTACT PRESSURES AND THE SETTLEMENTS OF THE STRUCTURE AS WELL AS THE RESULTING BENDING MOMENTS IN THE FOUNDATION AND THE SUPERSTRUCTURE. A SYMMETRICAL SUPERSTRUCTURE, SUPPORTED ON FOUR COLUMNS, IS CONSIDERED AS AN EXAMPLE, AND THE RELATION BETWEEN THE RIGIDITY OF THE FOUNDATION AND THAT OF THE SUPERSTRUCTURE IS DETERMINED AND EXPRESSED IN TERMS OF THE FLEXURAL RIGIDITY OF THE WHOLE STRUCTURE. THE CONDITIONS ARE SHOWN UNDER WHICH THE CALCULATION OF SETTLEMENTS AND CONTACT PRESSURES CAN BE SIMPLIFIED BY ASSUMING AN IMAGINARY FOUNDATION SLAB CARRYING NO SUPERSTRUCTURE AND HAVING A FLEXURAL RIGIDITY EQUAL TO THAT OF THE WHOLE STRUCTURE. FURTHERMORE, THE RELATIONSHIP OF THE BENDING MOMENTS IN THE FOUNDATION SLAB TO THE RIGIDITY OF STRUCTURE AND COMPRESSIBILITY OF SUBSOIL IS SHOWN. /LCPC/RRL/A/

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Filing Info

  • Accession Number: 00234582
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Oct 13 1994 12:00AM