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A platform for research: civil engineering, architecture and urbanism
Expanded-base composite pile and construction method thereof
The invention discloses an expanded-base composite pile and a construction method thereof, and belongs to the technical field of building pile foundations. The expanded-base composite pile consists ofan expanded-base cement soil stirring pile and an expanded-base reinforced concrete precast pile. The construction operation comprises the following steps of a, centering a pile position of a bidirectional stirring pile machine, and starting a drilling machine to drill downwards to stir cement soil; b, lifting a drill rod to stir the cement soil, repeating the step a and the step b, and completing construction of the non-expanded-base section of the stirring pile; c, adjusting the length of stirring blades, and constructing an expanded-base section of the stirring pile; d, repeating the stepa and the step b to complete the construction of the expanded-base section of the stirring pile; e, performing pile pressing construction on the reinforced concrete precast pile; f, taking soil from an expanded-base cavity; g, sinking a reinforcement cage; h, pouring concrete into the expanded-base cavity; and i, completing construction of the expanded-base composite pile. The advantages of rigidity and softness of a single expanded-base rigid pile and the stirring pile are sufficiently exerted, the unit material strength utilization rate and the pile end resistance are effectively improved, and good economical efficiency and wide application prospects are achieved.
本发明公开了一种扩底复合桩及其施工方法，属于建筑桩基础技术领域，该桩由扩底水泥土搅拌桩和扩底钢筋混凝土预制桩组成，其施工操作包括以下步骤：a.双向搅拌桩机桩位对中，启动钻机向下钻进搅拌水泥土；b.提升钻杆搅拌水泥土，重复步骤a、b，完成搅拌桩非扩底段施工；c.调整搅拌叶片长度，施工搅拌桩扩底段；d.重复a、b步骤，完成搅拌桩扩底段的施工；e.钢筋混凝土预制桩压桩施工；f.扩底空腔取土；g.下沉钢筋笼；h.向扩底空腔内浇筑混凝土；i.完成扩底复合桩施工。本发明充分发挥了单一扩底刚性桩和搅拌桩刚柔并济的优势，有效提高单位材料强度利用率和桩端阻力，具有良好的经济性和广泛的应用前景。
Expanded-base composite pile and construction method thereof
The invention discloses an expanded-base composite pile and a construction method thereof, and belongs to the technical field of building pile foundations. The expanded-base composite pile consists ofan expanded-base cement soil stirring pile and an expanded-base reinforced concrete precast pile. The construction operation comprises the following steps of a, centering a pile position of a bidirectional stirring pile machine, and starting a drilling machine to drill downwards to stir cement soil; b, lifting a drill rod to stir the cement soil, repeating the step a and the step b, and completing construction of the non-expanded-base section of the stirring pile; c, adjusting the length of stirring blades, and constructing an expanded-base section of the stirring pile; d, repeating the stepa and the step b to complete the construction of the expanded-base section of the stirring pile; e, performing pile pressing construction on the reinforced concrete precast pile; f, taking soil from an expanded-base cavity; g, sinking a reinforcement cage; h, pouring concrete into the expanded-base cavity; and i, completing construction of the expanded-base composite pile. The advantages of rigidity and softness of a single expanded-base rigid pile and the stirring pile are sufficiently exerted, the unit material strength utilization rate and the pile end resistance are effectively improved, and good economical efficiency and wide application prospects are achieved.
本发明公开了一种扩底复合桩及其施工方法，属于建筑桩基础技术领域，该桩由扩底水泥土搅拌桩和扩底钢筋混凝土预制桩组成，其施工操作包括以下步骤：a.双向搅拌桩机桩位对中，启动钻机向下钻进搅拌水泥土；b.提升钻杆搅拌水泥土，重复步骤a、b，完成搅拌桩非扩底段施工；c.调整搅拌叶片长度，施工搅拌桩扩底段；d.重复a、b步骤，完成搅拌桩扩底段的施工；e.钢筋混凝土预制桩压桩施工；f.扩底空腔取土；g.下沉钢筋笼；h.向扩底空腔内浇筑混凝土；i.完成扩底复合桩施工。本发明充分发挥了单一扩底刚性桩和搅拌桩刚柔并济的优势，有效提高单位材料强度利用率和桩端阻力，具有良好的经济性和广泛的应用前景。
Expanded-base composite pile and construction method thereof
一种扩底复合桩及其施工方法
ZHANG CHAOZHE (author) / LIU SONGYU (author) / LU TAISHAN (author) / SUN YANXIAO (author)
2020-11-03
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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