E.H. DAVIS MEMORIAL LECTURE 2001 SOIL-STRUCTURE INTERACTION

摘要

In the previous sections, several aspects of soil-structure interaction have been examined, and from the data presented the following may be concluded: - (1) The use of spring or 'Winkler' models can lead to erroneous results and should not be used. Continuum models (for the soil) are a more rational way to model the foundation soil, and a linear or non-linear continuum model is desirable. (2) When analysing rafts, or piled rafts, inclusion of the stiffness of the superstructure will reduce the differential deflections in the raft. The relative stiffness of the superstructure will determine the effect, but for very flexible structures the raft alone can be analysed without great error. (3) Simple models, like those based on the finite layer method, can yield results of acceptable accuracy without the need to use full three dimensional numerical methods. (4) Reasonable predictions of raft behaviour can be made for full scale structures using simple techniques, provided the loads placed on the piles are not such that pile yield or yield of the soil occurs.