擠(ji)(ji)(ji)(ji)密(mi)(mi)樁(zhuang)基(ji)施(shi)(shi)(shi)(shi)工(gong)(gong)，灰土(tu)擠(ji)(ji)(ji)(ji)密(mi)(mi)樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，環保擠(ji)(ji)(ji)(ji)密(mi)(mi)樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，水泥土(tu)擠(ji)(ji)(ji)(ji)密(mi)(mi)樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，素土(tu)擠(ji)(ji)(ji)(ji)密(mi)(mi)樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，夯(hang)(hang)擴擠(ji)(ji)(ji)(ji)密(mi)(mi)樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，沉管擠(ji)(ji)(ji)(ji)密(mi)(mi)樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，強夯(hang)(hang)地基(ji)施(shi)(shi)(shi)(shi)工(gong)(gong)，碎(sui)石擠(ji)(ji)(ji)(ji)密(mi)(mi)樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，擠(ji)(ji)(ji)(ji)密(mi)(mi)螺紋樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，鉆孔灌注(zhu)樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，軟土(tu)地基(ji)施(shi)(shi)(shi)(shi)工(gong)(gong)，灰土(tu)樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，我公司主(zhu)營：擠(ji)(ji)(ji)(ji)密(mi)(mi)樁(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，擠(ji)(ji)(ji)(ji)密(mi)(mi)樁(zhuang)工(gong)(gong)程

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1.強(qiang)夯置換地基的適(shi)用性(xing)和處(chu)理效果要通過現場(chang)試(shi)(shi)驗(yan)(yan)確(que)定。在(zai)進(jin)行強(qiang)夯置換施(shi)工前，應(ying)在(zai)施(shi)工現場(chang)有(you)代表性(xing)的場(chang)地選擇(ze)一個(ge)(ge)或(huo)幾(ji)個(ge)(ge)試(shi)(shi)驗(yan)(yan)區進(jin)行試(shi)(shi)夯或(huo)試(shi)(shi)驗(yan)(yan)性(xing)施(shi)工。每個(ge)(ge)實驗(yan)(yan)區的面積不應(ying)小(xiao)于20m×20m。

2.強(qiang)夯(hang)地(di)基用夯(hang)錘的質(zhi)量應(ying)(ying)為(wei)(wei)10-60t，其底部和形式應(ying)(ying)為(wei)(wei)網狀形，夯(hang)錘底部的面積應(ying)(ying)根據土壤的性質(zhi)確定，夯(hang)錘底部的靜態接地(di)壓力應(ying)(ying)為(wei)(wei)25-80kPa。敲擊(ji)能量高(gao)時點擊(ji)高(gao)值(zhi)，夯(hang)擊(ji)能量低時點擊(ji)低值(zhi)，細粒土使用低值(zhi)。錘頭底面應(ying)(ying)對稱設置(zhi)若干個從上(shang)至下貫通(tong)的排氣(qi)孔(kong)，孔(kong)徑為(wei)(wei)300-400 mm。

3.基礎夯實應采用帶(dai)自(zi)動(dong)脫鉤裝(zhuang)置(zhi)的履帶(dai)吊(diao)，夯錘質(zhi)量不應超(chao)過起(qi)重機械的額(e)定起(qi)重質(zhi)量。履帶(dai)吊(diao)應在吊(diao)臂(bei)末端(duan)設置(zhi)輔助龍門架或采取其他安(an)全措施，防止起(qi)落(luo)錘在起(qi)升落(luo)錘時(shi)傾覆。

4.地(di)質中常(chang)(chang)見(jian)的(de)問題是(shi)軟土，處理(li)軟土常(chang)(chang)用的(de)方法是(shi)強夯。強夯置換法對于(yu)適(shi)合(he)強夯的(de)環境稍(shao)微(wei)寬松一(yi)點，適(shi)合(he)高飽和(he)度的(de)淤泥，對地(di)基(ji)的(de)變(bian)形(xing)控制不會(hui)太(tai)嚴格。在設計之前，不能(neng)省(sheng)略(lve)現場(chang)實(shi)驗，太(tai)原(yuan)擠密樁(zhuang)基(ji)施(shi)工租(zu)賃價(jia)格，這(zhe)是(shi)為了對其性(xing)能(neng)有一(yi)個大致的(de)把握。

擠(ji)(ji)密(mi)(mi)(mi)(mi)樁基(ji)施(shi)(shi)(shi)工(gong)(gong)，灰土擠(ji)(ji)密(mi)(mi)(mi)(mi)樁施(shi)(shi)(shi)工(gong)(gong)，環(huan)保擠(ji)(ji)密(mi)(mi)(mi)(mi)樁施(shi)(shi)(shi)工(gong)(gong)，水泥土擠(ji)(ji)密(mi)(mi)(mi)(mi)樁施(shi)(shi)(shi)工(gong)(gong)，素(su)土擠(ji)(ji)密(mi)(mi)(mi)(mi)樁施(shi)(shi)(shi)工(gong)(gong)，夯擴擠(ji)(ji)密(mi)(mi)(mi)(mi)樁施(shi)(shi)(shi)工(gong)(gong)，沉管擠(ji)(ji)密(mi)(mi)(mi)(mi)樁施(shi)(shi)(shi)工(gong)(gong)，強夯地基(ji)施(shi)(shi)(shi)工(gong)(gong)，碎石擠(ji)(ji)密(mi)(mi)(mi)(mi)樁施(shi)(shi)(shi)工(gong)(gong)，擠(ji)(ji)密(mi)(mi)(mi)(mi)螺(luo)紋樁施(shi)(shi)(shi)工(gong)(gong)，鉆孔灌注(zhu)樁施(shi)(shi)(shi)工(gong)(gong)，軟土地基(ji)施(shi)(shi)(shi)工(gong)(gong)，太原擠(ji)(ji)密(mi)(mi)(mi)(mi)樁基(ji)施(shi)(shi)(shi)工(gong)(gong)隊，灰土樁施(shi)(shi)(shi)工(gong)(gong)，我公司主(zhu)營：擠(ji)(ji)密(mi)(mi)(mi)(mi)樁施(shi)(shi)(shi)工(gong)(gong)，擠(ji)(ji)密(mi)(mi)(mi)(mi)樁工(gong)(gong)程

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混凝土澆注時導(dao)管進(jin)泥(ni)

產生原因：

1.初(chu)灌混(hun)凝土數量(liang)不(bu)足。

2.導管底距槽(cao)底間距過大。

3.導管插(cha)入(ru)混凝土內深度不足。

4.提(ti)導管過度，泥漿擠入管內(nei)。

預防措施和(he)處理方法：

預防：首批混(hun)凝(ning)土(tu)應經計(ji)算(suan)，保持足夠數量(liang)，導(dao)(dao)管(guan)(guan)口離槽底(di)間距(ju)保持不(bu)小(xiao)于1.5D（D為導(dao)(dao)管(guan)(guan)直徑），導(dao)(dao)管(guan)(guan)插入混(hun)凝(ning)土(tu)深度(du)保持不(bu)小(xiao)于1.5m；測定混(hun)凝(ning)土(tu)上升面，確定高度(du)后再距(ju)此提(ti)拔導(dao)(dao)管(guan)(guan)。

處理：如槽底混(hun)凝土(tu)(tu)深度(du)小于0.5m，可重新(xin)放隔水塞(sai)澆混(hun)凝土(tu)(tu)，否則應將導管提出，將槽底混(hun)凝土(tu)(tu)用(yong)空氣吸(xi)泥機(ji)清出，重新(xin)澆筑(zhu)混(hun)凝土(tu)(tu)，太原擠密(mi)樁基施工(gong)設備(bei)租賃，或改用(yong)帶活底蓋導管插入混(hun)凝土(tu)(tu)內(nei)，重新(xin)澆混(hun)凝土(tu)(tu)。

擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)基施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，灰土(tu)(tu)擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，環保(bao)擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，水泥土(tu)(tu)擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，素(su)土(tu)(tu)擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，夯擴擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，沉管擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，強(qiang)夯地基施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，碎(sui)石擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，擠(ji)(ji)(ji)密(mi)(mi)(mi)螺(luo)紋樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，鉆(zhan)孔灌注(zhu)樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，軟(ruan)土(tu)(tu)地基施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，灰土(tu)(tu)樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，我公司主營：擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)工(gong)(gong)(gong)(gong)程

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水(shui)泥土(tu)(tu)(tu)(tu)粉噴樁(zhuang)(zhuang)法。粉噴樁(zhuang)(zhuang)與周圍的土(tu)(tu)(tu)(tu)體(ti)形成(cheng)復合地基，與土(tu)(tu)(tu)(tu)體(ti)結合緊密，承(cheng)載能(neng)力較大(da)，其樁(zhuang)(zhuang)體(ti)上存(cun)在應(ying)(ying)力集中(zhong)現象，大(da)部分荷載由(you)樁(zhuang)(zhuang)體(ti)承(cheng)擔，樁(zhuang)(zhuang)間土(tu)(tu)(tu)(tu)上的應(ying)(ying)力相應(ying)(ying)的減少，太原擠密樁(zhuang)(zhuang)基施工，使復合地基承(cheng)載力較原土(tu)(tu)(tu)(tu)層有(you)所提(ti)高，沉降量有(you)所降低。采(cai)用該法加固(gu)軟土(tu)(tu)(tu)(tu)地基時(shi)，水(shui)泥粉具有(you)較大(da)的吸(xi)水(shui)，發(fa)熱和(he)膨脹作(zuo)用，對(dui)樁(zhuang)(zhuang)間土(tu)(tu)(tu)(tu)起塑料板(ban)材排水(shui)板(ban)到(dao)一定的加固(gu)作(zuo)用，同樣提(ti)高復合地基的強度。

在(zai)利用水(shui)泥土粉噴樁加(jia)固(gu)軟土地(di)基時(shi)(shi)(shi)，需考慮各種因素(su)對加(jia)固(gu)強(qiang)(qiang)度的(de)影響:①要以水(shui)泥粉為加(jia)固(gu)料，其強(qiang)(qiang)度;②攪(jiao)(jiao)拌時(shi)(shi)(shi)間(jian)為2min時(shi)(shi)(shi)就可以達到的(de)攪(jiao)(jiao)拌效果，若攪(jiao)(jiao)拌時(shi)(shi)(shi)間(jian)太(tai)長，強(qiang)(qiang)度會有所降低，若攪(jiao)(jiao)拌的(de)時(shi)(shi)(shi)間(jian)未達到2min時(shi)(shi)(shi)，強(qiang)(qiang)度會很低;③置換率(lv)越(yue)高(gao)(gao)，強(qiang)(qiang)度越(yue)高(gao)(gao)，而隨著(zhu)齡(ling)期的(de)增加(jia)，強(qiang)(qiang)度大(da)致(zhi)呈線塑料排(pai)水(shui)板的(de)價格(ge)性增加(jia);④當含水(shui)量為某值時(shi)(shi)(shi)，樁體的(de)強(qiang)(qiang)度達到，一般樁體的(de)需水(shui)量為4kg/m。