14螺旋鉆孔灌注樁工程.doc

一、 施工準備
（一） 作業條件
1、 地上、地下障礙物都處理完畢，達到“三通一平”。施工用臨時設施準備就緒。
2、 場地標高一般為承臺梁的上皮標高，并經過夯實或碾壓。
3、 分段制作好鋼筋籠，以5-8m為宜。
4、 根據圖紙放出軸線及樁位點，布設抄水平標高木樁，并經過驗收簽認。
5、 施工前作成孔試驗，數量不少于2根。
6、 選擇和確定鉆孔機進出路線和鉆孔順序，制定施工方案。
（二） 材料要求
1、 水泥：采用42.5級礦渣硅酸鹽水泥。有產品合格證，出廠檢驗報告和進場復驗報告。
2、 砂：中砂或粗砂，含泥量不大于5%，有進場復驗報告。
3、 石子：卵石或碎石，含泥量不大于2%。有進場復驗報告。
4、 水：自來水或不含有害物質的潔凈水。
5、 鋼筋：鋼筋的品種，級別或規格必須符合設計要求，有產品合格證，出廠檢驗報告和進場復驗報告，表面清潔無老銹和油污。
6、 墊塊：用1:3水泥砂漿埋22#火燒絲提前預制成或用塑料卡。
7、 火燒絲：規格18～20#鐵絲燒成。
8、 外加劑、摻合料：根據施工需要通過試驗確定。有出廠質量證明文件、檢測報告，復試報告。
（三） 施工機具
螺旋鉆孔機、機動小翻斗車或手推車、長短棒式

First, construction preparation
(A) Operating conditions
1, on the ground, underground obstructions are dealt with, to "leveling." Construction of temporary facilities ready for use.
2, site elevation is generally Beam of the epithelial level, and after compaction or rolling.
3, segment produced good reinforcement cage, suitable for 5-8m.
4, according to the axis and the pile drawing release sites, the level of elevation stakes laid copied and signed off after acceptance.
5, pre-construction Zuocheng hole test, the number of not less than two.
6, selection, and determine the drill hole and out of line and sequence, and the construction project.
(B) material requirements
1 cement: slag Portland cement with 42.5. A product certification, factory test reports and inspection reports re admission.
2, sand: the sand or coarse sand, mud content less than 5%, the approach reinspection report.
3, gravel: gravel or crushed stone, mud content less than 2%. Have admitted the report of the reinspection.
4, Water: tap water or clean water free of harmful substances.
5, steel: steel variety, grade or size must meet the design requirements, the product certification, factory test reports and inspection reports re approaching the surface clean without the old rust and oil.
6, Pad: Use 1:3 cement mortar fire Siti buried before 22 # pre-or plastic card into.
7, fire wire: 18 ~ 20 # wire specifications firing.
8, additives, admixtures: Test to determine need under construction. With a factory quality documents, inspection reports, and second report.
(C) Construction equipment
Spiral drilling machine, mobile small dump truck or trolley, the length of rod

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