素混凝土樁施工方案

素混凝土樁施工方案 1 施工現(xiàn)場(chǎng)必須清除地上和地下一切障礙物后再予以平整。施工前應(yīng)預(yù)留保護(hù)土mm保護(hù)。測(cè)量結(jié)果經(jīng)自檢、 .........1 2 機(jī)..................................................................................................................................................................樁頂砼達(dá)到齡期后，清理樁間土，并截除樁頭...........................................................................樁體檢驗(yàn)合格后，鋪設(shè)砂墊層 允許偏差................................................................................................................................................................單位檢驗(yàn)數(shù)量...........................................................................................................................................1..................................................................................................................................................................................樁位(縱橫向)..................................................................................................................................................50mm.............................................................................................................................................................................................2..................................................................................................................................................................................樁體垂直度..........................................................................................................................................................1%.........................................................................................................................................................................3...........................................................................................................................................................................................................................................................................................................................mm........................................................4..................................................................................................................................................................................樁頂高程................................................................................................................................................................mm.........................................................................................................................................2222222222222222222222......................................................................................................2電流值增大，說(shuō)明孔內(nèi)阻力增大，應(yīng)降低鉆進(jìn)速度；...........................................................2...........................3.....................................................................................................................................................................................3 然后輸送混凝土。...........................................................................................................................................3可澆筑。................................................................................................................................................................3.......................................................................................................................................3inmm頂混凝土 用鉆機(jī)機(jī)座的導(dǎo)軌自動(dòng)平移。................................................................................................................4成。..........................................................................................................................................................................4....................................................................................................................................................................................................................................................................................................................................................4 成樁24小時(shí)后清土，清土采用小型機(jī)械設(shè)備及人工挖土、運(yùn)輸；小型機(jī)械挖土...............4后用高一級(jí)混凝土填補(bǔ)并振搗密實(shí)。................................................................................................4........................................................................................項(xiàng)目..........................................................................................................................................................................序號(hào)..........................................................................................................................................................................檢查項(xiàng)目................................................................................................................................................................合格標(biāo)準(zhǔn)................................................................................................................................................................................................................................................................................................................................主控項(xiàng)目................................................................................................................................................................1..................................................................................................................................................................................44444444 4 4 4 4 4 4樁距(mm) 4 4 4 4 派專人記錄鉆孔、 5 5 5 5 5 5 5 5 ............................................................................................................................................................................4..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................5..................................................................................................................................................................................合計(jì)........................................................................................................................................................................................................序號(hào).........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................數(shù)量..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(KW).................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ZKLBB................................................................................................................................................................1..................................................................................................................................................................................5555555666666666666666..........................................................................................................................................................................2012.......................................................................................................................................................................................................................................................................................................................................................樁基..........................................................................................................................................................................2.........................................................................................................................................................................................................................................................................................................HBT-60..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................2011....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................3........................................................................................................................................................................................................................................................................................BX-300..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................2012.................................................................................................................................................................................................................................................................................................................................................................................................................................序號(hào)......................................................................................................................................................................................................................................................................................................6666666666666666666666................................................................................................................................................................數(shù)量...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................備注...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................GP15.....................................................................................................................................................................1..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................2.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................2012..............................................................................................................................................................................................................................................................................................................................................6666666666666666666666 6 6 6 6 6 6 6 6 8后放出各樁的準(zhǔn)確位置，將線路縱坡、橫坡考慮在內(nèi)后，原地面標(biāo)高控制在正負(fù) ..............................................................................................................................................8員弄虛作假、..........................................................................................................................................................8......................................................................................................8垂直度不大于1%，確保樁體的正常受力。....................................................................................8止素混凝土樁成吊腳樁。.....................................................................................................................................................................................810)、整個(gè)施工過(guò)程中，應(yīng)安排質(zhì)檢人員旁站監(jiān)督，并作好施工原始記錄。記錄理措施等。..........................................................................................................................................................811)、為控制提鉆速度，應(yīng)購(gòu)置秒表配發(fā)到記錄人員，鉆孔時(shí)間、拔管速度、灌.........................................................................................................8.....................................8避免反插。在拔管過(guò)程中若出現(xiàn)反插，由于樁管垂直度的偏差， 17)、在截取樁頭前應(yīng)準(zhǔn)確測(cè)量樁頂標(biāo)高，并在縱橫向掛線標(biāo)示樁頭水平位置。..................928天后應(yīng)及時(shí)進(jìn)行單樁承載力或復(fù)合地基承載力試驗(yàn)，其承載力、變形模量應(yīng)符合設(shè)計(jì)要求。................................................................................................................................................9.............................................................920)、素混凝土樁成樁后，樁頂以上沒(méi)有一米墊層情況下嚴(yán)禁大型機(jī)械進(jìn)入施工 9 摻量，坍落度應(yīng)控制在160mm~200mm之間。.................................................................................9.............................................9...........................................9易造成管路堵塞。...........................................................................................................................................9 樁的樁頂開(kāi)始回升，此種現(xiàn)象稱為竄孔。發(fā)生竄孔的條件有如下三條:1)被加固土層中有松散飽和粉土、粉細(xì)砂;2)鉆桿鉆進(jìn)過(guò)程中葉片剪切作用對(duì)土體產(chǎn)生擾.............9連續(xù)施工的樁數(shù)，減少對(duì)已打樁擾動(dòng)能量的積累；3)合理提高鉆頭鉆進(jìn)速度。 10 (D為設(shè)計(jì)樁徑)，將上部斷樁取出，然后將樁四周加深開(kāi)挖20cm，將斷樁處的 10 6、安全生產(chǎn)保證措施.................................................................................................................................106.1、安全措施...............................................................................................................10...............................10........................................................................................................................................................11禁吸煙。...................................................................................................................................................115)、現(xiàn)場(chǎng)用電設(shè)備做好防雨工作，用電采用三相五線制，兩級(jí)漏電保護(hù)裝置。 11 配備一定數(shù)量的滅火器及水桶。..........................