陆培俊       （同济大学  上海 200092）

[提要]  对某一工程的桩位布置作了多种假定，分别作了上部结构-基础梁板-桩-地基-土的共同工作电算分析。从大量的计算分析中，探求桩距调整对地基、基础、上部结构所产生的影响，并简要阐明其形成的机理，从中揭示出有益于设计的结论。
[关键词]  桩距  沉降  沉降差  桩受力  承台内力  上部结构内力

A great deal of pile arrangements with different pile distance are compared for the pile foundation under a highrise building. The superstructure-raft-pile-soil interaction analysis is realized on the computer for individual case. The effect of different pile distance on the subgrade, the raft foundation, as well as the superstructure is analysed.The mechanism of the effect is interpreted. Some conclusions are summarized which will be beneficial for the structural design.
Keywords: pile  distance; settlement; differential  settlement; stress; pile; cap; superstructure