沖孔灌注樁方案(3)

1、中鐵二十四集團(tuán)寧杭客運(yùn)專線房建分項(xiàng)目部站場(chǎng)雨棚沖孔灌注樁施工方案I目錄1、工程概況、工程概況...............................................................................................................................21.1工程簡(jiǎn)介.......................................

2、.................................................................................21.2地質(zhì)水文情況：...........................................................................................................32、編制依據(jù)、編制依據(jù).........

3、......................................................................................................................43、施工準(zhǔn)備和施工平面布置圖、施工準(zhǔn)備和施工平面布置圖..........................................................................

4、.....................43.1管理人員配備情況.......................................................................................................53.2設(shè)備投入及進(jìn)場(chǎng)計(jì)劃.......................................................................

5、.............................53.3施工資料與技術(shù)準(zhǔn)備...................................................................................................63.3.1資料準(zhǔn)備.....................................................................

6、............................................................63.3.2技術(shù)準(zhǔn)備.................................................................................................................................73.3.3其他準(zhǔn)備...........

7、.....................................................................................................................73.4材料供應(yīng)計(jì)劃.............................................................................................

8、..................73.5勞動(dòng)力組織計(jì)劃...........................................................................................................83.6施工場(chǎng)地布置..........................................................................

9、.....................................83.6.1場(chǎng)地硬化..............................................................................................................................83.6.2工地出入口的布置.................................

10、................................................................................83.6.3臨房設(shè)施布置.........................................................................................................................93.6.4臨

11、時(shí)施工設(shè)施布置................................................................................................................93.6.5施工用電、用水計(jì)劃......................................................................................

12、.......................94、施工進(jìn)度計(jì)劃、施工進(jìn)度計(jì)劃.......................................................................................................................95、沖孔樁施工工藝和方法、沖孔樁施工工藝和方法......................................

13、...............................................................105.1施工方法...................................................................................................................105.2施工工藝........................

14、.............................................................................................105.2.1施工準(zhǔn)備....................................................................................................................

15、..........115.2.2開孔......................................................................................................................................125.2.3沖擊成孔........................................................

16、......................................................................125.2.4清孔......................................................................................................................................135.2.5

17、鋼筋籠制作安裝..................................................................................................................145.2.6導(dǎo)管安裝........................................................................................

18、......................................145.2.7灌注水下混凝土..................................................................................................................145.2.8試塊制作與養(yǎng)護(hù)........................................

19、...........................................................................155.2.9泥漿外運(yùn)...............................................................................................................................155.2.1

20、0成樁樁孔保護(hù).....................................................................................................................155.3主要控制點(diǎn)......................................................................................

21、...........................165.4成樁特殊問題及處理措施.........................................................................................165.4.1樁全長(zhǎng)小于設(shè)計(jì)要求........................................................................

22、..................................165.4.2鋼筋籠頂標(biāo)高不符合設(shè)計(jì)要求...........................................................................................185.4.3樁身質(zhì)量缺陷或斷樁...........................................................

23、................................................186、成樁試驗(yàn)及成樁質(zhì)量檢查驗(yàn)收、成樁試驗(yàn)及成樁質(zhì)量檢查驗(yàn)收.........................................................................................196.1成樁試驗(yàn)...........................................

24、..........................................................................196.2沖孔灌注樁靜載試驗(yàn).................................................................................................196.2.1最大加載量的確定....................

25、..........................................................................................196.2.2現(xiàn)場(chǎng)檢測(cè).......................................................................................................................

26、........19中鐵二十四集團(tuán)寧杭客運(yùn)專線房建分項(xiàng)目部站場(chǎng)雨棚沖孔灌注樁施工方案11、工程概況、工程概況1.1工程簡(jiǎn)介工程簡(jiǎn)介德清站位于德清縣站前新區(qū)。車站周邊地區(qū)以商業(yè)、金融為主，商業(yè)金融區(qū)外圍配置一定數(shù)量的住宅開發(fā)用地，此地區(qū)未來將發(fā)展成為德清縣新興城市副中心區(qū)。站臺(tái)雨棚12760㎡，設(shè)計(jì)規(guī)模為2站臺(tái)面4線，側(cè)式站臺(tái)2座，其中到發(fā)線2條，正線2條，420101.25m基本站臺(tái)1座，42081.25中間站臺(tái)1座。本工程＋0.000

27、相當(dāng)于黃海高程5.560m，樁型采用Φ600的沖孔灌注樁及Φ110的錨桿樁，樁端持力層為⒀3層中風(fēng)化凝灰?guī)r。沖孔灌注樁樁端全斷面進(jìn)入持力層不小于1.2m，且不應(yīng)小于2倍樁徑，樁頂進(jìn)入承臺(tái)100mm，樁主筋錨入承臺(tái)35d；單樁豎向承載力特征值根據(jù)樁基施工圖確定。樁身混凝土強(qiáng)度等級(jí)為C30（水下澆筑時(shí)提高一級(jí)），主筋的混凝土保護(hù)層厚度不小于50mm。1.2地質(zhì)水文情況：地質(zhì)水文情況：場(chǎng)地地處山麓和山間凹地，地基土分布不穩(wěn)定，在場(chǎng)地南側(cè)有基巖