Abstract
Various measurements of soil improvement for detached houses are proposed against non-equal settlement of foundations in ground settlement regions. To clarify dynamic properties of foundations on the improved soil deposits, oscillator tests for block foundations are carried out. Resonance curves and impedance functions of foundations are compared aomong different foundation types and various methods for soil improvement. The difference of dynamic properties between continuous and mat foundations is little. Effects of improvement methods on horiozntal impedances are not so remarkable, while those on rotational impedance are remarkable. The effect of soil improvement on real parts of impedance is corresponding to the effect on average settlements of foundation due to long-term loading.
