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質量控制決定CFG樁符合地基是否合格

發布日期：2018-03-30  文章來源:always-cieec.cn  作者:保定宇乾巖土

CFG樁復合地基是在碎石樁加固地基法的基礎上發展起來的一種地基處理技術。由于CFG樁改善了碎石樁的剛性，使其不僅能很好地發揮全樁的側阻作用，同時也能很好地發揮其端阻作用。因此，得以廣泛采用，并取得良好的經濟和社會效益。為進一步保證CFG樁復合地基的施工質量，應控(kong)制好以(yi)下幾個(ge)問題。

1.選(xuan)用(yong)保定宇乾巖土工(gong)程(cheng)的施工(gong)機械設備(bei)。CFG樁多用(yong)振動沉管(guan)機施工(gong)，也可(ke)用(yong)螺旋(xuan)鉆機。而(er)選(xuan)用(yong)哪(na)一類成樁機和什(shen)么型(xing)號，要視工(gong)程(cheng)的具體情況而(er)定。

2.深(shen)入了(le)解地質(zhi)(zhi)(zhi)情(qing)(qing)(qing)況，采用合理的(de)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)藝。在施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程中(zhong)，成樁(zhuang)的(de)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)藝對(dui)CFG樁(zhuang)復合地基的(de)質(zhi)(zhi)(zhi)量(liang)(liang)至(zhi)關重(zhong)要，不合理的(de)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)藝將造成重(zhong)大的(de)質(zhi)(zhi)(zhi)量(liang)(liang)問題，甚至(zhi)導致質(zhi)(zhi)(zhi)量(liang)(liang)事故(gu)，而要選擇確定合理的(de)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)藝必(bi)須深(shen)入了(le)解地質(zhi)(zhi)(zhi)情(qing)(qing)(qing)況。只(zhi)有(you)在深(shen)入了(le)解地質(zhi)(zhi)(zhi)情(qing)(qing)(qing)況的(de)基礎上，才能(neng)確定合理的(de)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)藝，并在施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)過(guo)(guo)程中(zhong)加強(qiang)監(jian)測，根據具體(ti)情(qing)(qing)(qing)況，控制施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)藝，發現特殊情(qing)(qing)(qing)況，做(zuo)出具體(ti)的(de)改變。

3.加強施(shi)工過程(cheng)中的監測。在施(shi)工過程(cheng)中，應加強監測，及時發現問題，以便針(zhen)對性地(di)采取有效措施(shi)，有效控制(zhi)成樁(zhuang)質量。施(shi)工場地(di)標(biao)高觀測、已打樁(zhuang)樁(zhuang)頂標(biao)高的觀測、對有懷疑的樁(zhuang)的處理(li)。

河北樁機處理廠家提醒，在(zai)施(shi)(shi)工準(zhun)備階段，必須詳細了(le)解(jie)地質情況，從而合理地選用施(shi)(shi)工機械(xie)。這(zhe)是確保CFG樁(zhuang)復合地基質量的(de)有效途徑。