Paper
SETTLEMENT BEHAVIOR OF SPREAD FOUNDATION WITH CORE WALL IN SUPERSTRUCTURE
Part1 Outline of measurement results
2026 Volume 51 Pages 2-1-2-6
Details
2026 Volume 51 Pages 2-1-2-6
The building surveyed in this study is a 165-m-high, 28-story skyscraper with a core wall structure. We predicted the settlement behavior of its spread foundation at the design stage and later measured the actual settlement to verify the accuracy of the prediction. With a footprint of 68 m × 65 m, the building is supported by a spread foundation on the Tokyo Gravel Stratum at a depth of -25.6 m relative to the first-floor level. This paper reports the results of field measurements of ground heave and settlement in the bearing stratum during construction and compares them with the predicted settlement values. This analysis used Young’s modulus evaluated based on the strain and confining-pressure dependence of the shear wave velocity, assuming the soil to be elastic. The following conclusions were drawn.
The measured maximum settlement of the foundation was 32 mm, which is in good agreement with the predictions. The accuracy of the settlement prediction improved when the confining pressure dependence of the soil stiffness was considered. The results suggest that the prediction method is applicable to heavy buildings on spread foundations that have a mean contact pressure of 600 KN/m2.
