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随着高速公路的迅速发展,钻孔灌注桩运用在公路桥梁基础工程中日益增加,旋挖钻机干式及干活式清水钻进工艺及控制是钻孔灌注桩施工中一种较先进的施工方法,该施工方法主要特点是施工效率高,适用于工期要求紧的工程项目。阿尔及利亚东向西高速公路W7-1项目部桥梁桩基施工中采用了德国宝峨BG40型旋挖钻机进行钻孔灌注桩的施工,不仅加快了施工进度,同时使现场技术人员掌握了新工艺、新技术,而且确保了工程质量。
With the rapid development of expressway, the application of cast-in-place cast-in-place pile is increasing day by day in the foundation of highway bridges and bridges. Drilling and working of dry and clean water drilling technology and control of rotary drilling rig is a kind of advanced construction in construction of cast-in-place bored pile Method, the main features of the construction method is high construction efficiency, suitable for construction projects requiring tight schedule. In the construction of the bridge pile foundation of W7-1 Project of East-West Expressway in Algeria, the construction of the bored pile was carried out by Baomeng BG40 rotary drilling rig in Germany, which not only accelerated the construction progress but also enabled the field technicians to master the new technology, New technology, but also to ensure the quality of the project.