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A platform for research: civil engineering, architecture and urbanism
Construction method of pole and tower foundation micro pile in soft soil foundation
The invention belongs to the technical field of electric power infrastructure construction and particularly relates to a construction method of a tower foundation micro pile in a soft soil foundation. The construction method comprises the following steps that 1, a reinforcement cage and a secondary grouting pipe being bound; 2, positioning a pile position, forming a hole and cleaning the hole; 3, a reinforcement cage being arranged in the hole, a primary grouting pipe being arranged, and gravel aggregate being put into the primary grouting pipe; 4, grouting being conducted in the primary grouting pipe, and a pile being formed preliminarily; 5, after the grout is initially set, secondary grouting being conducted in the primary grouting pipe; and 6, forming a pile after the slurry is coagulated. The method is advantaged in that the method has advantages of being safe and convenient to construct, the construction period can be greatly shortened, the occupied area is small, construction cost is reduced, and funds are saved. Due to the fact that the MP pile is a variable cross-section pile body, the bearing capacity of a single pile is greatly improved through the secondary grouting technology, the bearing capacity after grouting is improved by 20-30% compared with the bearing capacity before grouting, and the service life of the electric power infrastructure is effectively prolonged.
本发明属于电力基础设施建设技术领域，尤其涉及一种软土地基中杆塔基础微型桩的施工方法。包括以下步骤：步骤1.绑扎钢筋笼和二次注浆管；步骤2.桩位定位、成孔、清孔；步骤3.在孔内下钢筋笼、下一次注浆管，在一次注浆管中投放碎石骨料；步骤4.向一次注浆管内注浆，初步成桩；步骤5.浆液初凝后，向一次注浆管内二次注浆；步骤6.浆液凝后成桩。本发明具有杆塔基础施工安全，施工方便的优点，能够大大缩短施工工期，并且占地面积较小，降低施工成本，节约资金。由于MP桩是一种变截面桩体，通过二次注浆工艺，大大提高了单桩承载力，注浆后承载力比注浆前承载力提高20～30％，有效延长电力基础设施的工作寿命和使用寿命。
Construction method of pole and tower foundation micro pile in soft soil foundation
The invention belongs to the technical field of electric power infrastructure construction and particularly relates to a construction method of a tower foundation micro pile in a soft soil foundation. The construction method comprises the following steps that 1, a reinforcement cage and a secondary grouting pipe being bound; 2, positioning a pile position, forming a hole and cleaning the hole; 3, a reinforcement cage being arranged in the hole, a primary grouting pipe being arranged, and gravel aggregate being put into the primary grouting pipe; 4, grouting being conducted in the primary grouting pipe, and a pile being formed preliminarily; 5, after the grout is initially set, secondary grouting being conducted in the primary grouting pipe; and 6, forming a pile after the slurry is coagulated. The method is advantaged in that the method has advantages of being safe and convenient to construct, the construction period can be greatly shortened, the occupied area is small, construction cost is reduced, and funds are saved. Due to the fact that the MP pile is a variable cross-section pile body, the bearing capacity of a single pile is greatly improved through the secondary grouting technology, the bearing capacity after grouting is improved by 20-30% compared with the bearing capacity before grouting, and the service life of the electric power infrastructure is effectively prolonged.
本发明属于电力基础设施建设技术领域，尤其涉及一种软土地基中杆塔基础微型桩的施工方法。包括以下步骤：步骤1.绑扎钢筋笼和二次注浆管；步骤2.桩位定位、成孔、清孔；步骤3.在孔内下钢筋笼、下一次注浆管，在一次注浆管中投放碎石骨料；步骤4.向一次注浆管内注浆，初步成桩；步骤5.浆液初凝后，向一次注浆管内二次注浆；步骤6.浆液凝后成桩。本发明具有杆塔基础施工安全，施工方便的优点，能够大大缩短施工工期，并且占地面积较小，降低施工成本，节约资金。由于MP桩是一种变截面桩体，通过二次注浆工艺，大大提高了单桩承载力，注浆后承载力比注浆前承载力提高20～30％，有效延长电力基础设施的工作寿命和使用寿命。
Construction method of pole and tower foundation micro pile in soft soil foundation
一种软土地基中杆塔基础微型桩的施工方法
CHEN YOUHUI (author) / LYU ZHONGHUA (author) / LI DONGXUE (author) / LIU RAN (author) / PAN QI (author) / WU HAO (author) / MA QIANG (author) / ZHANG JI (author) / JIA JIHAN (author) / CHEN GUOLONG (author)
2022-02-11
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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