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A platform for research: civil engineering, architecture and urbanism
Construction method of drilled prefabricated composite pile
The invention provides a construction method of a drilled prefabricated composite pile, and belongs to the technical field of foundation pile construction. The construction method comprises the following steps that after a pile hole is filled with cement paste, a prefabricated pipe pile is sunk into the pile hole, and pipe holes in the two ends of the prefabricated pipe pile are connected with plugging devices; after the cement paste in the pile hole is solidified, earthwork between the prefabricated pipe pile and the ground surface is excavated out, and the pile top of the prefabricated pipe pile is exposed; the plugging device plugged at the pile top is removed, and high-strength grouting materials are injected into a pipe core of the prefabricated pipe pile; and anchoring steel bars are embedded at the pile top. According to the construction method, the procedure of embedding the anchoring steel bars is carried out after the earthwork is excavated out, construction of the anchoring steel bars can be visually controlled, and the embedding positions of the anchoring steel bars are accurate, and the perpendicularity is well controlled; and meanwhile, the labor intensity is reduced, the steel bar loss is reduced, and the situation that the steel bars are damaged due to improper operation during mechanical excavation is avoided.
本发明提供的一种钻孔预制复合桩的施工方法，属于基础桩施工技术领域，包括如下步骤：桩孔内灌满水泥浆后，将预制管桩沉入桩孔内，预制管桩两端的管孔处均连接有封堵装置；待桩孔内的水泥浆固化后，挖除预制管桩与地表之间的土方，并露出预制管桩的桩顶；拆除封堵在桩顶处的封堵装置，向预制管桩的管芯注入高强灌浆料；并在所述桩顶处埋置锚固钢筋。本发明将埋置锚固钢筋的工序放在挖除土方之后，能够直观的控制锚固钢筋的施工，确保锚固钢筋埋置位置精确、良好的控制垂直度，同时降低劳动强度，减少钢筋损耗，避免因机械开挖时操作不当破坏钢筋。
Construction method of drilled prefabricated composite pile
The invention provides a construction method of a drilled prefabricated composite pile, and belongs to the technical field of foundation pile construction. The construction method comprises the following steps that after a pile hole is filled with cement paste, a prefabricated pipe pile is sunk into the pile hole, and pipe holes in the two ends of the prefabricated pipe pile are connected with plugging devices; after the cement paste in the pile hole is solidified, earthwork between the prefabricated pipe pile and the ground surface is excavated out, and the pile top of the prefabricated pipe pile is exposed; the plugging device plugged at the pile top is removed, and high-strength grouting materials are injected into a pipe core of the prefabricated pipe pile; and anchoring steel bars are embedded at the pile top. According to the construction method, the procedure of embedding the anchoring steel bars is carried out after the earthwork is excavated out, construction of the anchoring steel bars can be visually controlled, and the embedding positions of the anchoring steel bars are accurate, and the perpendicularity is well controlled; and meanwhile, the labor intensity is reduced, the steel bar loss is reduced, and the situation that the steel bars are damaged due to improper operation during mechanical excavation is avoided.
本发明提供的一种钻孔预制复合桩的施工方法，属于基础桩施工技术领域，包括如下步骤：桩孔内灌满水泥浆后，将预制管桩沉入桩孔内，预制管桩两端的管孔处均连接有封堵装置；待桩孔内的水泥浆固化后，挖除预制管桩与地表之间的土方，并露出预制管桩的桩顶；拆除封堵在桩顶处的封堵装置，向预制管桩的管芯注入高强灌浆料；并在所述桩顶处埋置锚固钢筋。本发明将埋置锚固钢筋的工序放在挖除土方之后，能够直观的控制锚固钢筋的施工，确保锚固钢筋埋置位置精确、良好的控制垂直度，同时降低劳动强度，减少钢筋损耗，避免因机械开挖时操作不当破坏钢筋。
Construction method of drilled prefabricated composite pile
一种钻孔预制复合桩的施工方法
BI DAN (author) / ZHAO JIANYONG (author) / DOU CHUNYANG (author)
2021-04-30
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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