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讨论了旋挖钻孔桩灌注桩在工程中的应用,施工技术要求,工艺流程。环保特点突出,施工现场干净,成孔所用泥浆基本上等于孔的体积,且泥浆经过沉淀和除砂还可以多次反复使用。旋挖钻机的地层适应能力强,旋挖钻机可以适应于淤泥质土、粘土、砂土、卵石层等地层。在孔壁上形成较明显的螺旋线,有助于提高桩的摩阻力。为旋挖钻孔桩灌注桩施工方案提供参考。
Discusses the application of rotary drilling bored piles in engineering, construction technical requirements and technological process. Environmental protection features outstanding, the construction site clean, the mud used to form a hole is basically equal to the volume of the hole, and the mud after sedimentation and sand removal can also be repeated use. Rotary drilling rig strata adaptability, rotary drilling rig can be adapted to muddy soil, clay, sand, gravel and other formations. In the hole wall to form a more obvious spiral, help to improve pile friction. It provides a reference for the construction scheme of rotary bored pile.