A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Screw pile foundation and construction method thereof
The invention relates to a screw pile foundation and a construction method thereof. The construction method comprises the following steps that 1, a piling point is determined, and line setting and elevation are measured; step 2, preparing a concrete mixture; the concrete mixture is prepared from the following raw materials in parts by mass: cement, medium sand, gravel, water, fly ash, a water reducing agent, a retarder, phenolic resin, polyacrylamide and modified polypropylene fibers, 3, drilling holes in the foundation by adopting a screw drill rod in alignment with the piling points; step 4, after drilling to a preset designed depth, drilling is stopped; a retreating type grouting method is adopted, the screw drill rod is reversely rotated and lifted, meanwhile, a concrete mixing material is pumped into the screw drill rod, and when the drill rod is lifted to the designed height of the top face of the thread part, the screw drill rod is positively rotated again or directly lifted to the designed pile calibration height; filling of the screw pile is completed; and step 5, standing and curing for 28-30 days to obtain the concrete screw pile. The anti-cracking screw pile foundation has the effect of improving the anti-cracking performance of the screw pile foundation.
本申请涉及一种螺旋桩基础及其施工方法，施工方法包括以下步骤：步骤1，确定打桩点，测量放线、标高；步骤2，制备混凝土拌合料；混凝土拌合料包含以下质量份的原料：水泥、中砂、碎石、水、粉煤灰、减水剂、缓凝剂、酚醛树脂、聚丙烯酰胺和改性聚丙烯纤维；步骤3，在地基上对准打桩点采用螺杆钻杆钻孔；步骤4，当钻至预定设计深度后，停止钻孔；采用后退式注浆的方法，反向旋转提升螺杆钻杆，同时向螺杆钻杆内泵送混凝土拌合料，当钻杆提到螺纹部分顶面的设计高度时，螺杆钻杆再次正旋转或直接提升至设计桩定标高；螺旋桩灌注完成；步骤5，静置养护28‑30d，得到混凝土螺旋桩。本申请具有提升螺旋桩基础的抗裂性能的效果。
Screw pile foundation and construction method thereof
The invention relates to a screw pile foundation and a construction method thereof. The construction method comprises the following steps that 1, a piling point is determined, and line setting and elevation are measured; step 2, preparing a concrete mixture; the concrete mixture is prepared from the following raw materials in parts by mass: cement, medium sand, gravel, water, fly ash, a water reducing agent, a retarder, phenolic resin, polyacrylamide and modified polypropylene fibers, 3, drilling holes in the foundation by adopting a screw drill rod in alignment with the piling points; step 4, after drilling to a preset designed depth, drilling is stopped; a retreating type grouting method is adopted, the screw drill rod is reversely rotated and lifted, meanwhile, a concrete mixing material is pumped into the screw drill rod, and when the drill rod is lifted to the designed height of the top face of the thread part, the screw drill rod is positively rotated again or directly lifted to the designed pile calibration height; filling of the screw pile is completed; and step 5, standing and curing for 28-30 days to obtain the concrete screw pile. The anti-cracking screw pile foundation has the effect of improving the anti-cracking performance of the screw pile foundation.
本申请涉及一种螺旋桩基础及其施工方法，施工方法包括以下步骤：步骤1，确定打桩点，测量放线、标高；步骤2，制备混凝土拌合料；混凝土拌合料包含以下质量份的原料：水泥、中砂、碎石、水、粉煤灰、减水剂、缓凝剂、酚醛树脂、聚丙烯酰胺和改性聚丙烯纤维；步骤3，在地基上对准打桩点采用螺杆钻杆钻孔；步骤4，当钻至预定设计深度后，停止钻孔；采用后退式注浆的方法，反向旋转提升螺杆钻杆，同时向螺杆钻杆内泵送混凝土拌合料，当钻杆提到螺纹部分顶面的设计高度时，螺杆钻杆再次正旋转或直接提升至设计桩定标高；螺旋桩灌注完成；步骤5，静置养护28‑30d，得到混凝土螺旋桩。本申请具有提升螺旋桩基础的抗裂性能的效果。
Screw pile foundation and construction method thereof
一种螺旋桩基础及其施工方法
HUANG YONGQUAN (author) / MAI XIAOJUN (author) / DONG YULIANG (author)
2022-03-15
Patent
Electronic Resource
Chinese
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