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A platform for research: civil engineering, architecture and urbanism
Grouting bottom-expanding cast-in-place pile structure with waterproof canvas and construction process thereof
The invention relates to a grouting bottom-expanding cast-in-place pile structure with waterproof canvas and a construction process thereof. The cast-in-place pile structure comprises a pile hole, wherein a pile body is arranged in the pile hole; the pile body comprises a reinforcement cage and concrete; the reinforcement cage is poured into the concrete; the lower section of the pile body is bound with the waterproof canvas through upper and lower reinforcing steel wires; and cement mortar is filled between the waterproof canvas and the pile body. The grouting bottom-expanding cast-in-place pile structure with the waterproof canvas and the construction process thereof can solve the problems that a traditional construction process is complex, the construction period is prolonged, and a drill bit needs to be replaced by a special extruding and expanding device; the construction of a bottom-expanding cast-in-place pile is greatly influenced by a soil layer and the depth, a soft soil area is prone to hole collapse, and an expanded head is difficult to form; and the bottom-expanding cast-in-place pile is difficult to remove slag due to the fact that the thickness of sediment at the pile end is large, and the bearing capacity and deformation are difficult to control.
本发明涉及一种带防水帆布注浆扩底灌注桩结构及其施工工艺，所述灌注桩结构包括桩孔，所述桩孔内设置有桩身，所述桩身包括钢筋笼和混凝土，所述钢筋笼浇筑于混凝土内，所述桩身下段通过上下两个加强钢丝绑扎有防水帆布，所述防水帆布与桩身之间填充设置有水泥砂浆。本发明一种带防水帆布注浆扩底灌注桩结构及其施工工艺，它能够解决传统施工工序复杂，工期加长，需要专门的挤扩装置更换钻头；扩底灌注桩施工受土层及深度影响较大，软土地区容易塌孔，难以形成扩大头；扩底灌注桩由于桩端沉渣厚度大，清渣难，承载力及变形难以控制的问题。
Grouting bottom-expanding cast-in-place pile structure with waterproof canvas and construction process thereof
The invention relates to a grouting bottom-expanding cast-in-place pile structure with waterproof canvas and a construction process thereof. The cast-in-place pile structure comprises a pile hole, wherein a pile body is arranged in the pile hole; the pile body comprises a reinforcement cage and concrete; the reinforcement cage is poured into the concrete; the lower section of the pile body is bound with the waterproof canvas through upper and lower reinforcing steel wires; and cement mortar is filled between the waterproof canvas and the pile body. The grouting bottom-expanding cast-in-place pile structure with the waterproof canvas and the construction process thereof can solve the problems that a traditional construction process is complex, the construction period is prolonged, and a drill bit needs to be replaced by a special extruding and expanding device; the construction of a bottom-expanding cast-in-place pile is greatly influenced by a soil layer and the depth, a soft soil area is prone to hole collapse, and an expanded head is difficult to form; and the bottom-expanding cast-in-place pile is difficult to remove slag due to the fact that the thickness of sediment at the pile end is large, and the bearing capacity and deformation are difficult to control.
本发明涉及一种带防水帆布注浆扩底灌注桩结构及其施工工艺，所述灌注桩结构包括桩孔，所述桩孔内设置有桩身，所述桩身包括钢筋笼和混凝土，所述钢筋笼浇筑于混凝土内，所述桩身下段通过上下两个加强钢丝绑扎有防水帆布，所述防水帆布与桩身之间填充设置有水泥砂浆。本发明一种带防水帆布注浆扩底灌注桩结构及其施工工艺，它能够解决传统施工工序复杂，工期加长，需要专门的挤扩装置更换钻头；扩底灌注桩施工受土层及深度影响较大，软土地区容易塌孔，难以形成扩大头；扩底灌注桩由于桩端沉渣厚度大，清渣难，承载力及变形难以控制的问题。
Grouting bottom-expanding cast-in-place pile structure with waterproof canvas and construction process thereof
一种带防水帆布注浆扩底灌注桩结构及其施工工艺
JIANG YONG (author) / GUAN YUGUO (author) / LUO JIANYING (author)
2021-05-11
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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