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    劉全林  魏煥衛(wèi)  楊敏
    （同濟(jì)大學(xué)地下建筑與工程系  上海 200092）

[提要]  從側(cè)向受荷樁的受力和變形機(jī)理出發(fā)，提出了地面超載下鄰樁側(cè)向變形的計(jì)算分析方法。該方法考慮了樁身側(cè)向受力隨樁身側(cè)向變形的關(guān)系，并據(jù)此推導(dǎo)了關(guān)于鄰樁受力和變形的微分方程和有限元計(jì)算方法，編制了計(jì)算程序。最后，利用實(shí)測(cè)數(shù)據(jù)驗(yàn)證了該方法的合理性和實(shí)用性，這將為受地面堆載影響的廠(chǎng)房和倉(cāng)庫(kù)的樁基設(shè)計(jì)與加固提供依據(jù)。
[關(guān)鍵詞]  地面超載  樁基  樁土共同作用  側(cè)向變形

A method of calculating lateral-displacement of adjacent-pile caused by overcharge on ground is put forward by considering relationship between pressure on the pile and its deformation. Based on its differential equation and FEM, the method is programmed and examined by results of field measurement. So it is sound and can provide important reference to design and improve pile foundation affected by overcharge.
Keywords: overcharge on ground; pile foundation; pile&soil interaction; lateral-deformation