軟弱地盤に支持された建築構造物の沈下過程に関する実用算定法

概要

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In this paper, we have proposed the practical solution, which we named as the DK-method, to calculate the settlement process of structures during and subsequent to construction, based on the analytical results of the finite element method (FEM). The following particular features have been formed in the DK-method : 1) The frame structures with friction pile foundations and those with spread foundations can be treated in a similar manner by introducing the idea of effective thickness of soils. 2) The rigidity of soils are represented by the coefficient of subgrade reaction (K-value), where we assumed that the shear settlements and the consolidation ones occuar in soils during and subsequent to the construction of superstructures, respectively. 3) The vertical rigidity of superstructures are calculated by applying the Dr. Muto's D-value principle for seismic analysis of RC buildings, and the D-value of superstructures is calculated by considering the progress of construction of RC frame structures. We have proved that the differential settlements caluculated by DK-method give a close approximation to those calculated by FEM in a wide range of rigidity of structures and soils. As a result, we conclude that the DK-method is of much practical use to caluculate the settlements during and subsequent to the construction of structures on poor grounds.
社団法人日本建築学会の論文
1988-01-30