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王國光 嚴(yán) 平 龔曉南
（浙江大學(xué)建筑工程學(xué)院 杭州 310027）[提要] 在大量實(shí)測研究結(jié)果的基礎(chǔ)上，假定復(fù)合地基樁間土和樁的接觸應(yīng)力按拋物線模式分布，通過地基與結(jié)構(gòu)共同作用條件的滿足來確定復(fù)合地基的接觸應(yīng)力的具體分布，使考慮共同作用的沉降計(jì)算成為可能，并對最大沉降和差異沉降受結(jié)構(gòu)對地基的相對剛度的影響規(guī)律進(jìn)行分析，得出若干有益的結(jié)論。
[關(guān)鍵詞] 共同作用 復(fù)合地基 相對剛度 接觸應(yīng)力Based on large quantity of observed results, the contact pressure on soil between piles and the contact pressure on piles are assumed to distribute in a parabolic form. The contact pressure of composite foundation is determined by meeting the interaction conditions between composite foundation, foundation and structure, which makes it impossible to calculate settlement considering the interaction. The effects of relative stiffness of the foundation and structure to that of the composite foundation on maximal settlement and differential settlement are analyzed,and the solutions are given.
Keywords: interaction; composite foundation; relative stiffness; contact pressure
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