Elevated Building Foundation

Abstract

A part of a building structure called the “elevated building foundation” to shield the building structure against 3D components of destructive earthquakes, comprising a massive horizontal plate ( 1 ) raised above the level of the ground and underpinned by multiple abutments ( 2 ); those abutments ( 2 ) are resting on individual footings at the level of the ground ( 3 ); the top surface of plate ( 1 ) is bearing a protected building superstructure ( 4 ). Due to a proper use of materials, sizes, and configuration of the elevated building foundation, the value of impedance of seismic waves that propagate vertically through the horizontal stratum of the elevated building foundation encompassing the abutments ( 2 ) is secured such low in comparison with the corresponding values of the stratum of footings in the ground ( 3 ) or the stratum of plate ( 1 ), that any transmission of seismic wave energy into the superstructure ( 4 ) furnished with an elevated building foundation per the current invention will be decreased considerably as a result of reflections, diffractions, and dissipations of the stress energy in a process of multiple wave transformations.

1 . A system of properly assembled structural elements called an “elevated building foundation” adapted for a 3D protection of a building superstructure against a damaging effect of a strong earthquake and comprising the following features: 
 a massive horizontal plate ( 1 ) raised above the level of the ground and underpinned by multiple abutments ( 2 );    individual footings at the level of the ground ( 3 ) supporting the abutments ( 2 );    the top surface of the plate ( 1 ) bearing a protected building superstructure ( 4 );    as a result of a proper choice of materials, dimensions, and configuration of the elevated building foundation, the value of impedance of seismic waves that propagate vertically through the horizontal stratum of the elevated building foundation encompassing the abutments ( 2 ) has to be secured at such a low level in comparison with the corresponding impedances at the stratum of footings on the ground ( 3 ) or the stratum of plate ( 1 ), that any transmission of seismic wave energy into the superstructure ( 4 ) furnished with the elevated building foundation will be decreased considerably.