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利勃海尔集团的产品和服务凯氏钻孔属于最常见的干式旋转钻进方法,用于生产大直径(直径约500 mm以上)钻孔桩。该工艺适用于几乎所有类型的土壤和岩石。土壤由较短的旋转钻孔工具输送,如螺旋钻、岩心钻、桶式钻斗和专用钻孔工具。这种钻孔方法的一个典型要素是钻杆,即所谓的凯氏钻杆,它是伸缩式的,便于大深度钻孔。
1.安装围护桩
2.排空,例如用螺旋钻
3.插入钢筋笼
4.混凝土浇筑
5.成品桩
视频显示利勃海尔旋挖钻机在不同的凯氏钻孔应用。
当土壤不够坚实或地下水进入时,必须使用套管钻孔
坚实、干燥的建筑地面允许无套管钻孔安装。
对于不同的土壤条件,使用螺旋钻、岩心钻、桶式钻斗和专用钻孔工具。
对于净空受限的钻孔作业,可使用特殊的短导杆。
当回转动力头的扭矩不足时,使用液压套管搓管机。
在表面交替旋转和摇动螺旋钻,将松散的土壤从螺旋钻中清除。
钻孔完成后,使用钻机的辅助绞车将钢筋笼提升到钻孔中。
钢筋笼插入后,立即用混凝土填充钻孔。
Foundation piles for the new Neckartal bridge at Heilbronn (GE).
The 130 year old bridge needs to be renovated.
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Expansion of the Federseeklinik in Bad Buchau (GE).
A luxury resort is being built at the bay of Kotor in Montenegro.
Further berths for cruise ships ath the Port of Split.
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