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A platform for research: civil engineering, architecture and urbanism
Tubular pile grouting, ramming and bottom expanding construction method
The invention relates to the technical field of foundation construction, in particular to a tubular pile grouting, ramming and bottom expanding construction method which can enable cement paste and filler to diffuse to the surrounding stratum of a pile bottom, and the cement paste generates splitting, permeating and cementation calcification effects on the surrounding stratum. And finally, the cement paste and the filler form an expanded head at the bottom of the pile end and are tightly combined with the stratum, so that the single-pile bearing capacity of the pipe pile is large, and the safety of a building on the pipe pile can be guaranteed, and the pipe pile grouting, ramming and bottom expanding construction method comprises the following steps that the pile tip of the pipe pile enters a soil bearing stratum; the pile tip sinks and is separated from the pile body of the tubular pile, and a cavity is formed between the bottom surface of the pile body and the top surface of the pile tip; filling materials are injected into the cavity; and the filling material is tamped to form an expanded head. The problem that in a tubular pile construction method in the prior art, the contact area between the bottom of a tubular pile and a soil layer is small, and consequently the ultimate bearing capacity of a single pile of the tubular pile is low is solved.
本发明涉及地基基础施工技术领域，具体涉及一种管桩灌浆夯振扩底施工方法，这种施工方法可以使水泥浆和填料向桩底周围地层四处扩散，水泥浆对周围地层产生劈裂，渗透及胶结钙化作用，最终水泥浆及填料在桩端底部形成扩大头并与地层紧密结合，进而管桩的单桩承载力较大，能保证上面建筑物安全，上述管桩灌浆夯振扩底施工方法包括以下步骤：使管桩的桩尖进入土壤持力层；使桩尖下沉并与管桩的桩体分离，桩体底面与桩尖顶面之间形成空腔；向空腔内注入填充物料；夯击填充物料，形成扩大头。本发明解决了现有技术的管桩施工方法中管桩底部与土层的接触面积较小，导致管桩的单桩极限承载力较低的问题。
Tubular pile grouting, ramming and bottom expanding construction method
The invention relates to the technical field of foundation construction, in particular to a tubular pile grouting, ramming and bottom expanding construction method which can enable cement paste and filler to diffuse to the surrounding stratum of a pile bottom, and the cement paste generates splitting, permeating and cementation calcification effects on the surrounding stratum. And finally, the cement paste and the filler form an expanded head at the bottom of the pile end and are tightly combined with the stratum, so that the single-pile bearing capacity of the pipe pile is large, and the safety of a building on the pipe pile can be guaranteed, and the pipe pile grouting, ramming and bottom expanding construction method comprises the following steps that the pile tip of the pipe pile enters a soil bearing stratum; the pile tip sinks and is separated from the pile body of the tubular pile, and a cavity is formed between the bottom surface of the pile body and the top surface of the pile tip; filling materials are injected into the cavity; and the filling material is tamped to form an expanded head. The problem that in a tubular pile construction method in the prior art, the contact area between the bottom of a tubular pile and a soil layer is small, and consequently the ultimate bearing capacity of a single pile of the tubular pile is low is solved.
本发明涉及地基基础施工技术领域，具体涉及一种管桩灌浆夯振扩底施工方法，这种施工方法可以使水泥浆和填料向桩底周围地层四处扩散，水泥浆对周围地层产生劈裂，渗透及胶结钙化作用，最终水泥浆及填料在桩端底部形成扩大头并与地层紧密结合，进而管桩的单桩承载力较大，能保证上面建筑物安全，上述管桩灌浆夯振扩底施工方法包括以下步骤：使管桩的桩尖进入土壤持力层；使桩尖下沉并与管桩的桩体分离，桩体底面与桩尖顶面之间形成空腔；向空腔内注入填充物料；夯击填充物料，形成扩大头。本发明解决了现有技术的管桩施工方法中管桩底部与土层的接触面积较小，导致管桩的单桩极限承载力较低的问题。
Tubular pile grouting, ramming and bottom expanding construction method
一种管桩灌浆夯振扩底施工方法
GAO YUNFEI (author) / GAO YONGGUANG (author) / ZHANG JINGWEN (author)
2022-11-08
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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