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A platform for research: civil engineering, architecture and urbanism
Pile construction process for progressive multi-time hole-forming grouting pile
The invention provides a pile construction process for a progressive multi-time hole-forming grouting pile. The construction process comprises the following steps that, slurry is prepared, and a plurality of pile casings are prepared; a hole site is measured; a pile hole is drilled in a progressive pile casing jacking mode, and disintegrating slag in the pile hole is discharged out of the pile hole through repeated flushing and stirring of slurry; when encountering rocks, a drill bit is replaced by a rock drill bit, and the rocks are drilled through in the mode of progressively jacking in the pile casings with the pile casing numbers increasing progressively; the pile hole is drilled till the preset drilling depth is reached in the mode that the pile casing with the progressively-increased number of the previous pile casing is progressively jacked in; primary hole cleaning is carried out; a reinforcement cage is prepared and installed; a conduit is installed; the secondary hole cleaning is carried out; and concrete pouring is carried out until the construction is finished. According to the technical scheme, accurate positioning during drilling is achieved by arranging a positioning pile, the disintegrating slag in the pile hole is continuously cleaned in the drilling process of the drill bit, it is avoided that pile breaking and mud clamping do not occur to a pile body after pouring, the pile casing is adopted for protecting the hole wall, and the phenomenon that a hole cannot be formed due to hole collapse and block falling is effectively prevented.
本发明提供了一种递进多次成孔灌柱桩施工工艺，包括以下步骤：制备泥浆、制备多根护筒；测定孔位；通过递进顶入护筒的方式钻取桩孔，并通过泥浆反复冲搅使桩孔内碎渣排出桩孔以外；当遭遇岩石时，将钻头更换为岩石钻头，通过递进顶入前一根护筒编号递增的护筒的方式钻通岩石；再通过递进顶入前一根护筒编号递增的护筒的方式钻取桩孔直至钻进预设深度；一次清孔；制备和安装钢筋笼；安装导管；二次清孔；灌注混凝土直至施工结束。采用本发明的技术方案，通过设置定位桩实现了钻孔时的精确定位，在钻头钻进过程中不断清理桩孔内碎渣，避免灌注后的桩身不出现断桩及夹泥，采用护筒保护孔壁，有效防止出现塌孔、掉块以致无法成孔的现象。
Pile construction process for progressive multi-time hole-forming grouting pile
The invention provides a pile construction process for a progressive multi-time hole-forming grouting pile. The construction process comprises the following steps that, slurry is prepared, and a plurality of pile casings are prepared; a hole site is measured; a pile hole is drilled in a progressive pile casing jacking mode, and disintegrating slag in the pile hole is discharged out of the pile hole through repeated flushing and stirring of slurry; when encountering rocks, a drill bit is replaced by a rock drill bit, and the rocks are drilled through in the mode of progressively jacking in the pile casings with the pile casing numbers increasing progressively; the pile hole is drilled till the preset drilling depth is reached in the mode that the pile casing with the progressively-increased number of the previous pile casing is progressively jacked in; primary hole cleaning is carried out; a reinforcement cage is prepared and installed; a conduit is installed; the secondary hole cleaning is carried out; and concrete pouring is carried out until the construction is finished. According to the technical scheme, accurate positioning during drilling is achieved by arranging a positioning pile, the disintegrating slag in the pile hole is continuously cleaned in the drilling process of the drill bit, it is avoided that pile breaking and mud clamping do not occur to a pile body after pouring, the pile casing is adopted for protecting the hole wall, and the phenomenon that a hole cannot be formed due to hole collapse and block falling is effectively prevented.
本发明提供了一种递进多次成孔灌柱桩施工工艺，包括以下步骤：制备泥浆、制备多根护筒；测定孔位；通过递进顶入护筒的方式钻取桩孔，并通过泥浆反复冲搅使桩孔内碎渣排出桩孔以外；当遭遇岩石时，将钻头更换为岩石钻头，通过递进顶入前一根护筒编号递增的护筒的方式钻通岩石；再通过递进顶入前一根护筒编号递增的护筒的方式钻取桩孔直至钻进预设深度；一次清孔；制备和安装钢筋笼；安装导管；二次清孔；灌注混凝土直至施工结束。采用本发明的技术方案，通过设置定位桩实现了钻孔时的精确定位，在钻头钻进过程中不断清理桩孔内碎渣，避免灌注后的桩身不出现断桩及夹泥，采用护筒保护孔壁，有效防止出现塌孔、掉块以致无法成孔的现象。
Pile construction process for progressive multi-time hole-forming grouting pile
一种递进多次成孔灌柱桩施工工艺
LIU XUAN (author) / JIANG KUN (author) / LU HUA (author) / ZHANG SIBIN (author) / QIN HE (author) / ZUO HAIHONG (author) / ZHOU YUTING (author) / WAN TINGRONG (author) / YUAN XIAO (author) / LIU YUE (author)
2021-08-06
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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