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山西擠(ji)密(mi)(mi)樁施(shi)(shi)工(gong)(gong)(gong),山西擠(ji)密(mi)(mi)樁基(ji)施(shi)(shi)工(gong)(gong)(gong),山西灰土擠(ji)密(mi)(mi)樁施(shi)(shi)工(gong)(gong)(gong),山西素土擠(ji)密(mi)(mi)樁施(shi)(shi)工(gong)(gong)(gong),太原擠(ji)密(mi)(mi)樁施(shi)(shi)工(gong)(gong)(gong),太原擠(ji)密(mi)(mi)樁基(ji)施(shi)(shi)工(gong)(gong)(gong),山西擠(ji)密(mi)(mi)螺(luo)紋樁施(shi)(shi)工(gong)(gong)(gong),山西鉆(zhan)孔(kong)灌注(zhu)樁施(shi)(shi)工(gong)(gong)(gong),山西環(huan)保擠(ji)密(mi)(mi)樁施(shi)(shi)工(gong)(gong)(gong),我公(gong)司(si)主營(ying):擠(ji)密(mi)(mi)樁施(shi)(shi)工(gong)(gong)(gong)
本公司跟您一(yi)起分享以下內容:
鉆孔灌注樁施工安全要求(qiu)
鉆(zhan)孔(kong)灌注(zhu)樁(zhuang)是通過機械在地(di)基中鉆(zhan)進形(xing)成(cheng)樁(zhuang)孔(kong),在孔(kong)內放置鋼筋籠、灌注(zhu)混凝(ning)土形(xing)成(cheng)的(de)樁(zhuang)體。鉆(zhan)孔(kong)灌注(zhu)樁(zhuang)施工過程中的(de)主要注(zhu)意事項(xiang)有:
(1)現場(chang)人員必須佩戴(dai)好各類(lei)安(an)全防護(hu)用品(pin),特種作(zuo)業人員應持證上(shang)崗。
(2)施工(gong)前(qian)必須(xu)對機械設(she)備進行檢查、維修(xiu)、保養。施工(gong)所用電(dian)纜(lan)線必須(xu)認真(zhen)檢查,確認安全后方可(ke)使用。
(3)混(hun)凝土灌注、吊車(che)升降必須有專人指揮,所有帶電設備移動(dong)前須切斷(duan)電源,嚴(yan)禁操作及無證(zheng)上崗。
(4)電(dian)(dian)氣設備(bei)均須有(you)良好的接(jie)(jie)(jie)地(di)接(jie)(jie)(jie)零,山西(xi)灰土擠密樁施工聯系電(dian)(dian)話,接(jie)(jie)(jie)地(di)電(dian)(dian)阻不大于4Ω,并裝有(you)可(ke)靠的觸電(dian)(dian)保護裝置。配電(dian)(dian)箱以及(ji)其(qi)它供(gong)電(dian)(dian)設備(bei)不得置于水中或者(zhe)泥漿中,電(dian)(dian)線接(jie)(jie)(jie)頭要牢固,并且要絕緣,輸電(dian)(dian)線路必須設有(you)漏電(dian)(dian)開關。
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本(ben)公司(si)跟(gen)您一起分享(xiang)以下(xia)內容:
柱錘沖擴樁(zhuang)樁(zhuang)徑設計應考慮下列因素:
? ?1)柱(zhu)錘(chui)直(zhi)徑:現已經形成(cheng)系列,常用直(zhi)徑為300mm~500mm,山(shan)西灰土擠密樁施工,如ф377公稱錘(chui),就是377mm直(zhi)徑的柱(zhu)錘(chui)。
? ?2)沖孔(kong)(kong)直(zhi)(zhi)徑(jing):它是沖孔(kong)(kong)達到設計(ji)深度(du)時,地基被沖擊成孔(kong)(kong)的(de)直(zhi)(zhi)徑(jing),對(dui)于可(ke)塑狀態(tai)黏性土其成孔(kong)(kong)直(zhi)(zhi)徑(jing)往(wang)(wang)往(wang)(wang)比錘直(zhi)(zhi)徑(jing)要大。
? ?3)樁(zhuang)徑(jing):它(ta)是樁(zhuang)身填料(liao)夯實后的平均直徑(jing),比沖孔直徑(jing)大,如ф377柱錘夯實后形成的樁(zhuang)徑(jing)可達600mm~800mm。因此,樁(zhuang)徑(jing)不是一個常數,當土(tu)層松軟時,樁(zhuang)徑(jing)就(jiu)大,當土(tu)層較密時,樁(zhuang)徑(jing)就(jiu)小。
?設(she)計(ji)時一(yi)般先根據經驗(yan)假設(she)樁(zhuang)(zhuang)徑,假設(she)時應考慮柱錘規格、土質情況(kuang)及復合地基的設(she)計(ji)要求,一(yi)般常(chang)用(yong)d=500mm~800mm,經試成樁(zhuang)(zhuang)后再確(que)定設(she)計(ji)樁(zhuang)(zhuang)徑。
山(shan)(shan)西擠(ji)(ji)密(mi)樁施(shi)(shi)工(gong),山(shan)(shan)西擠(ji)(ji)密(mi)樁基(ji)施(shi)(shi)工(gong),山(shan)(shan)西灰土擠(ji)(ji)密(mi)樁施(shi)(shi)工(gong),山(shan)(shan)西素土擠(ji)(ji)密(mi)樁施(shi)(shi)工(gong),太原(yuan)擠(ji)(ji)密(mi)樁施(shi)(shi)工(gong),太原(yuan)擠(ji)(ji)密(mi)樁基(ji)施(shi)(shi)工(gong),山(shan)(shan)西擠(ji)(ji)密(mi)螺紋樁施(shi)(shi)工(gong),山(shan)(shan)西鉆孔灌(guan)注樁施(shi)(shi)工(gong),山(shan)(shan)西環保擠(ji)(ji)密(mi)樁施(shi)(shi)工(gong),我公司主營:擠(ji)(ji)密(mi)樁施(shi)(shi)工(gong)
本公(gong)司跟您(nin)一(yi)起分享以下(xia)內容:
由于樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)體(ti)(ti)(ti)是(shi)用松散(san)狀態(tai)的(de)(de)(de)(de)素土(tu)(tu)(黏性土(tu)(tu)或(huo)黏質粉土(tu)(tu))、灰(hui)土(tu)(tu)經(jing)夯(hang)實而成(cheng),樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)體(ti)(ti)(ti)的(de)(de)(de)(de)夯(hang)實質量可用土(tu)(tu)的(de)(de)(de)(de)干(gan)(gan)密(mi)(mi)度(du)(du)(du)(du)表(biao)示(shi),山西灰(hui)土(tu)(tu)擠密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)工設備租(zu)賃,土(tu)(tu)的(de)(de)(de)(de)干(gan)(gan)密(mi)(mi)度(du)(du)(du)(du)大(da),說明夯(hang)實質量好,反(fan)之,則差。樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)體(ti)(ti)(ti)的(de)(de)(de)(de)夯(hang)實質量一般(ban)通過測定全(quan)部(bu)深(shen)度(du)(du)(du)(du)內(nei)(nei)(nei)(nei)土(tu)(tu)的(de)(de)(de)(de)干(gan)(gan)密(mi)(mi)度(du)(du)(du)(du)確定,然后將其換算為(wei)平均(jun)壓實系(xi)數進行評定。樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)體(ti)(ti)(ti)土(tu)(tu)的(de)(de)(de)(de)干(gan)(gan)密(mi)(mi)度(du)(du)(du)(du)取(qu)樣:自樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)頂(ding)向下(xia)0.5m起,每1m不應(ying)(ying)少于2點(dian)(dian)(dian)(dian)(1組),即樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)孔(kong)(kong)內(nei)(nei)(nei)(nei)距樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)孔(kong)(kong)邊緣50mm處(chu)1點(dian)(dian)(dian)(dian),樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)孔(kong)(kong)中(zhong)心(xin)(即1/2)處(chu)1點(dian)(dian)(dian)(dian),當樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)長大(da)于6m時,全(quan)部(bu)深(shen)度(du)(du)(du)(du)內(nei)(nei)(nei)(nei)的(de)(de)(de)(de)取(qu)樣點(dian)(dian)(dian)(dian)不應(ying)(ying)少于12點(dian)(dian)(dian)(dian)(6組),當樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)長不足6m時,全(quan)部(bu)深(shen)度(du)(du)(du)(du)內(nei)(nei)(nei)(nei)的(de)(de)(de)(de)取(qu)樣點(dian)(dian)(dian)(dian)不應(ying)(ying)少于10點(dian)(dian)(dian)(dian)(5組)。樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)體(ti)(ti)(ti)土(tu)(tu)的(de)(de)(de)(de)平均(jun)壓實系(xi)數λc,是(shi)根據(ju)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)孔(kong)(kong)全(quan)部(bu)深(shen)度(du)(du)(du)(du)內(nei)(nei)(nei)(nei)的(de)(de)(de)(de)平均(jun)干(gan)(gan)密(mi)(mi)度(du)(du)(du)(du)與室(shi)內(nei)(nei)(nei)(nei)擊實試(shi)驗(yan)求得填(tian)料(素土(tu)(tu)或(huo)灰(hui)土(tu)(tu))在優含(han)水量狀態(tai)下(xia)的(de)(de)(de)(de)大(da)干(gan)(gan)密(mi)(mi)度(du)(du)(du)(du)的(de)(de)(de)(de)比值,即λc=ρd0/ρdmax,式中(zhong)ρd0為(wei)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)孔(kong)(kong)全(quan)部(bu)深(shen)度(du)(du)(du)(du)內(nei)(nei)(nei)(nei)的(de)(de)(de)(de)填(tian)料(素土(tu)(tu)或(huo)灰(hui)土(tu)(tu)),經(jing)分層夯(hang)實的(de)(de)(de)(de)平均(jun)干(gan)(gan)密(mi)(mi)度(du)(du)(du)(du)(t/m3);ρdmax為(wei)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)孔(kong)(kong)內(nei)(nei)(nei)(nei)的(de)(de)(de)(de)填(tian)料(素土(tu)(tu)或(huo)灰(hui)土(tu)(tu)),通過擊實試(shi)驗(yan)求得優含(han)水量狀態(tai)下(xia)的(de)(de)(de)(de)大(da)干(gan)(gan)密(mi)(mi)度(du)(du)(du)(du)(t/m3)。
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