Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Secondary compaction pore-forming full-length expanded pile suitable for collapsible loess and construction method
The invention provides a secondary compaction pore-forming full-length expanded pile suitable for collapsible loess, and belongs to the technical field of building foundation piles, the secondary compaction pore-forming full-length expanded pile comprises a core pile and an expanded body material, the expanded body material wraps the outer side of the core pile, and the core pile is a cast-in-place pile. The expansion body material comprises at least one of silt, silty soil and remolded soil formed by compaction. The invention further provides a construction method of the expanded pile, the soil compactor is adopted to compact and form holes in the collapsible loess layer, the long spiral drilling machine is adopted to drill holes and take soil in the non-collapsible loess layer below the collapsible loess layer, then the expanded material is poured, the long spiral hole-forming cast-in-place pile is adopted to secondarily compact the surrounding soil body, and the long spiral hole-forming cast-in-place pile is adopted to form holes in the non-collapsible loess layer. The method can effectively solve the influence of collapsible loess on a pile foundation, is superior to a traditional soil pile and lime soil pile soil squeezing method, is used for foundation treatment of a collapsible loess site, can effectively eliminate the collapsibility of loess and plain filling soil, and solves the problem that the collapsible loess is easy to settle.
本发明提出了一种适用于湿陷性黄土的二次挤密成孔全长扩体桩，属于建筑基础桩技术领域，包括芯桩及扩体材料，所述扩体材料包裹在芯桩外侧，所述芯桩为灌注桩。所述扩体材料包括粉土、粉砂土和挤密形成的重塑土中的至少一种。本发明还提出了所述扩体桩的施工方法，采用挤土器在湿陷性黄土层挤密成孔，并采用长螺旋钻机在湿陷性黄土层下方的非湿陷性黄土层钻孔取土，然后灌注扩体材料，采用长螺旋成孔灌注桩二次挤密周围土体，可有效解决湿陷性黄土对桩基的影响，优于传统的土桩、灰土桩挤土方法，用于湿陷性黄土场地的地基处理，可有效消除黄土、素填土的湿陷性，解决湿陷性黄土容易发生沉降的问题。
Secondary compaction pore-forming full-length expanded pile suitable for collapsible loess and construction method
The invention provides a secondary compaction pore-forming full-length expanded pile suitable for collapsible loess, and belongs to the technical field of building foundation piles, the secondary compaction pore-forming full-length expanded pile comprises a core pile and an expanded body material, the expanded body material wraps the outer side of the core pile, and the core pile is a cast-in-place pile. The expansion body material comprises at least one of silt, silty soil and remolded soil formed by compaction. The invention further provides a construction method of the expanded pile, the soil compactor is adopted to compact and form holes in the collapsible loess layer, the long spiral drilling machine is adopted to drill holes and take soil in the non-collapsible loess layer below the collapsible loess layer, then the expanded material is poured, the long spiral hole-forming cast-in-place pile is adopted to secondarily compact the surrounding soil body, and the long spiral hole-forming cast-in-place pile is adopted to form holes in the non-collapsible loess layer. The method can effectively solve the influence of collapsible loess on a pile foundation, is superior to a traditional soil pile and lime soil pile soil squeezing method, is used for foundation treatment of a collapsible loess site, can effectively eliminate the collapsibility of loess and plain filling soil, and solves the problem that the collapsible loess is easy to settle.
本发明提出了一种适用于湿陷性黄土的二次挤密成孔全长扩体桩，属于建筑基础桩技术领域，包括芯桩及扩体材料，所述扩体材料包裹在芯桩外侧，所述芯桩为灌注桩。所述扩体材料包括粉土、粉砂土和挤密形成的重塑土中的至少一种。本发明还提出了所述扩体桩的施工方法，采用挤土器在湿陷性黄土层挤密成孔，并采用长螺旋钻机在湿陷性黄土层下方的非湿陷性黄土层钻孔取土，然后灌注扩体材料，采用长螺旋成孔灌注桩二次挤密周围土体，可有效解决湿陷性黄土对桩基的影响，优于传统的土桩、灰土桩挤土方法，用于湿陷性黄土场地的地基处理，可有效消除黄土、素填土的湿陷性，解决湿陷性黄土容易发生沉降的问题。
Secondary compaction pore-forming full-length expanded pile suitable for collapsible loess and construction method
适用于湿陷性黄土的二次挤密成孔全长扩体桩及施工方法
ZHOU TONGHE (Autor:in) / GAO XINJUN (Autor:in) / GAO WEI (Autor:in) / JIA MINGZHAO (Autor:in) / ZHANG TUANFEI (Autor:in) / WANG JIANBO (Autor:in) / WEI WENYU (Autor:in)
12.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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