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................................................................................................................................................................. 1.1、寶明精工項目北側(cè)道路及西側(cè)排水箱涵工程施工圖第三冊結(jié)構(gòu)工程1.2、現(xiàn)場踏勘情況。1.3、執(zhí)行的主要技術(shù)規(guī)范););
2.1.工程基本信息
(1)本區(qū)域擋墻采用錨索支護,垂直式鋼筋混凝土擋墻施工;(3)本區(qū)域邊坡開挖為不放坡開挖,自上而下分段施工,根據(jù)設(shè)計施工圖紙,本區(qū)域錨索擋墻
4×7?5
4×7?5
40×25×5
(5)本擋墻每隔
(6)錨索均為一孔
320kN,鎖定應(yīng)力為
130mm,應(yīng)采用φ130
30°。錨索均采用
根φ15.24mm
0.38~0.45,注
0.6~0.8
(7)錨頭采用
(8)本段錨索支護工程工程量巨大,施工工序復(fù)雜多樣,在高邊坡上作業(yè),施工工作面大,屬(9)施工場地布置,施工安全管理、工程質(zhì)量控制工作、施工前后工序組織安排等是本工程施(10
(11)經(jīng)常出現(xiàn)不可預(yù)測的突發(fā)事故,工程質(zhì)量難以控制,同時來不及采取任何安全防患措施。(12)從外觀地形地貌很難判斷高邊坡是否穩(wěn)定。3.2、施工要求和技術(shù)保證條件(1(2
4.1、組織機構(gòu) 4.2、進度計劃
4.3、勞動力計劃 專職質(zhì)檢
與施工人
框格梁組
4.4、機械配置計劃
0.5m3UBJ—100B
直徑<13cm
4.5、主要材料計劃
7Φ15
×20
4.6、施工準(zhǔn)備
4.6.2、施工準(zhǔn)備
(1)做好地表截、排水設(shè)施后,山體邊坡自上而下分層開挖,每一分層高度
2~3m。(2)每一層開挖完畢后,立即施工坡面錨索:定位、造孔、錨索安裝、灌漿,然后進行下一(3)每一級坡面錨索施工完畢后,應(yīng)立即進行施工放線,定位肋柱位置,綁扎制作鋼筋肋柱(4)錨索框架梁加固時,按相關(guān)技術(shù)要求對錨索進行張拉。(5)每一級全部施工完畢后,進入下一分級循環(huán),在進行綁扎肋柱和擋墻鋼筋時,應(yīng)注意預(yù)
錨索錨孔孔徑為Φ130mm,錨索材料采用高強度低松弛Φ15.2
Rb=
320KN;并采用與其配套的錨具系列,錨孔內(nèi)灌注
`
圖1
0~10mm。為確保錨孔深度,孔深不小于設(shè)計孔深,
0~100mm,錨索的鉆孔斜度(傾角)允許偏差±1°。
1~2
0.2~0.4MPa)將孔內(nèi)巖粉及水體全部清除出孔外,以免降低水
5mm,
10~20cm
0.45~0.5
HRB334φ25、HRB335φ18、HRB335φ10。
5
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