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    陸培俊       （同濟(jì)大學(xué)  上海 200092）

[提要]  對(duì)某一工程的樁位布置作了多種假定，分別作了上部結(jié)構(gòu)-基礎(chǔ)梁板-樁-地基-土的共同工作電算分析。從大量的計(jì)算分析中，探求樁距調(diào)整對(duì)地基、基礎(chǔ)、上部結(jié)構(gòu)所產(chǎn)生的影響，并簡(jiǎn)要闡明其形成的機(jī)理，從中揭示出有益于設(shè)計(jì)的結(jié)論。
[關(guān)鍵詞]  樁距  沉降  沉降差  樁受力  承臺(tái)內(nèi)力  上部結(jié)構(gòu)內(nèi)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