利用擠密砂樁處理擠土效應(yīng)引起的樁位偏移
黃生根 曹 輝
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黃生根 （東南大學(xué)土木工程學(xué)院 南京 210096）曹 輝 （中國地質(zhì)大學(xué) 武漢 430030）
[提要] 擠土樁在沉樁過程中會產(chǎn)生明顯的擠土效應(yīng)，應(yīng)用圓柱孔擴張理論可推導(dǎo)出樁周土體在打樁過程中
產(chǎn)生的徑向位移。擠土效應(yīng)也可用來處理樁位的偏移，通過合理布置樁數(shù)和排數(shù)，使樁產(chǎn)生需要的反向位移。工程實例表明，理論計算與實測結(jié)果吻合程度較好。
[關(guān)鍵詞] 擠土效應(yīng) 塑性區(qū) 樁位偏移Compacting effect is caused in the constructing process of compaction pile, the displacement of soil around piles can be deduced with the column cavities method. Compacting effect can also be used to treat deviation of piles caused by driving piles. According to a practical project, the results of practical test is basically identical with results of calculation.
Keywords: compacting effect; plastic zone; deviation; pile
