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(五邑大學(xué)土木工程系  江門 529020)
【提要】  將剛性基礎(chǔ)基底反力的計算方法用于樁位偏差時各樁頂豎向力的計算。以四樁樁基與三樁樁基為例，分別計算了其中一樁樁位發(fā)生偏差時各樁豎向力的數(shù)值。計算結(jié)果表明，當(dāng)其中一根樁的樁位偏差在規(guī)范規(guī)定范圍以內(nèi)時，各樁豎向力的變化大致在10%以內(nèi)；當(dāng)其中一根樁的樁位偏差達(dá)一倍樁徑時，對四樁樁基，基樁豎向力變化最大可達(dá)30%；對三樁樁基，最大可達(dá)60%。
【關(guān)鍵詞】  樁位偏差  剛性基礎(chǔ)  豎向力  樁基礎(chǔ)
Analysis of the Vertical Force Change in the Pile Foundation Induced by the Error of a Pile Position/Dong Qinghua(Department of Civil Engineering,Wuyi University,Jiangmen 529020,China)
Abstract:Calculation method of foundation pressure of rigid foundation is used to calculate the change of vertical force on pile top induced by the error of a pile position.The change of vertical force on every pile in fourpile or threepile foundation is calculated separately when any piles position emerges the error.The results show that,whether fourpile or threepile foundation,if the error of a pile position is within the limit set by the code,the change of vertical force on every pile is within about 10%;if the error of a pile position equals to a piles diameter,the maximum change of the vertical force on the pile is about 30% for fourpile foundation and about 60% for threepile foundation.
Keywords:error of a pile position;rigid foundation;vertical force;pile foundation