發(fā)布時(shí)間：2018-01-13 00:26

  本文關(guān)鍵詞：基于不同后注漿方法的橋梁樁基沉降分析　出處：《建筑技術(shù)》2017年03期 　論文類型：期刊論文

  更多相關(guān)文章： 堆載法 后注漿 沉降 荷載-沉降曲線

【摘要】：采用慢速維持荷載堆載法,分析采用3種不同后注漿條件(樁端注漿,樁側(cè)注漿,聯(lián)合注漿)及未注漿條件的樁基沉降特性,結(jié)果表明樁基采用后注漿能有效控制樁基樁頂沉降;與未注漿樁相比,樁端注漿樁可減少沉降0.86mm,樁側(cè)注漿樁可減少沉降1.32mm,聯(lián)合注漿樁可減少沉降1.42mm;采用后注漿后,樁基荷載-沉降曲線近似為直線,其極限荷載較未注漿有較大提高。
[Abstract]:The settlement characteristics of pile foundation under three different post-grouting conditions (pile end grouting, pile side grouting, combined grouting) and non-grouting conditions were analyzed by slow maintenance load surcharge method. The results show that post-grouting can effectively control the settlement of pile top. Compared with the non-grouting pile, the pile end grouting pile can reduce the settlement by 0.86mm, the pile side grouting pile can reduce the settlement by 1.32mm, the combined grouting pile can reduce the settlement by 1.42 mm. After post-grouting, the load-settlement curve of pile foundation is approximately straight line, and the ultimate load of pile foundation is much higher than that of non-grouting.
【作者單位】： 武漢科技大學(xué)資源與環(huán)境工程學(xué)院;中南大學(xué)土木工程學(xué)院;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(2013CB036004)
【分類號(hào)】：U443.15
【正文快照】： 在軟土地區(qū),橋梁樁基后注漿是土體加固技術(shù)與■技術(shù)的有機(jī)結(jié)合,通過朦不但可固^?沉渣和樁側(cè)泥皮,還可加固_和樁側(cè)一定范圍內(nèi)的土體,從而大幅度提高樁側(cè)阻力和樁端阻力,縮短橋梁樁基靜置時(shí)間。目前后注堓方法已廣泛采用,以解決軟土軀橋梁樁基承載力不足及工后沉降過大等問題[1_，

本文編號(hào)：1416673