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A platform for research: civil engineering, architecture and urbanism
Hydraulic engineering CFG pile composite foundation and construction method
The invention provides a hydraulic engineering CFG pile composite foundation and a construction method.The composite foundation comprises an embedded mattress layer, CFG piles and a pile end bearing layer, the embedded mattress layer comprises a cement soil layer, a coarse aggregate reinforced cushion layer and a gravel replacement layer which are sequentially arranged from top to bottom, reinforced materials are arranged in the coarse aggregate reinforced cushion layer, and the gravel replacement layer is arranged in the coarse aggregate reinforced cushion layer; the coarse-grained material reinforced cushion layer is laid on the upper portions of the CFG piles and the gravel replacement layer, and the gravel replacement layer is formed in the mode that a soft soil layer within a certain range below the pile top elevation of the CFG piles is subjected to gravel replacement. On the basis of a previous rubble layer structural form, the mattress layer adopts an embedded design, an anti-seepage cement soil layer is arranged above the mattress layer, a rubble reinforced material is arranged below the mattress layer, and rubble replacement layer design is adopted for inter-pile soil with a certain thickness below the pile top. The embedded CFG pile composite foundation has the effects of optimizing the bearing capacity mode of the composite foundation, reducing the pile-soil stress ratio, promoting drainage consolidation of a soft foundation and improving the anti-seepage performance of a mattress layer.
本发明提供一种水利工程CFG桩复合地基及施工方法，所述复合地基包括嵌入式褥垫层、CFG桩、桩端持力层，嵌入式褥垫层包括由上至下依次设置的水泥土层、粗粒料加筋垫层、碎石置换层，粗粒料加筋垫层中布置加筋材料，所述粗粒料加筋垫层铺设在CFG桩和碎石置换层上部，所述碎石置换层为CFG桩的桩顶高程以下一定范围的软土层采用碎石置换形成。本发明的的褥垫层在以往的碎石层结构型式的基础上，采用了嵌入式设计，垫层上方为防渗水泥土层，垫层下方为碎石加筋材料，桩顶以下一定厚度的桩间土采用碎石置换层设计。本嵌入式CFG桩复合地基具有优化复合地基承载力模式、降低桩土应力比、促进软基排水固结以及提高褥垫层防渗性能的作用。
Hydraulic engineering CFG pile composite foundation and construction method
The invention provides a hydraulic engineering CFG pile composite foundation and a construction method.The composite foundation comprises an embedded mattress layer, CFG piles and a pile end bearing layer, the embedded mattress layer comprises a cement soil layer, a coarse aggregate reinforced cushion layer and a gravel replacement layer which are sequentially arranged from top to bottom, reinforced materials are arranged in the coarse aggregate reinforced cushion layer, and the gravel replacement layer is arranged in the coarse aggregate reinforced cushion layer; the coarse-grained material reinforced cushion layer is laid on the upper portions of the CFG piles and the gravel replacement layer, and the gravel replacement layer is formed in the mode that a soft soil layer within a certain range below the pile top elevation of the CFG piles is subjected to gravel replacement. On the basis of a previous rubble layer structural form, the mattress layer adopts an embedded design, an anti-seepage cement soil layer is arranged above the mattress layer, a rubble reinforced material is arranged below the mattress layer, and rubble replacement layer design is adopted for inter-pile soil with a certain thickness below the pile top. The embedded CFG pile composite foundation has the effects of optimizing the bearing capacity mode of the composite foundation, reducing the pile-soil stress ratio, promoting drainage consolidation of a soft foundation and improving the anti-seepage performance of a mattress layer.
本发明提供一种水利工程CFG桩复合地基及施工方法，所述复合地基包括嵌入式褥垫层、CFG桩、桩端持力层，嵌入式褥垫层包括由上至下依次设置的水泥土层、粗粒料加筋垫层、碎石置换层，粗粒料加筋垫层中布置加筋材料，所述粗粒料加筋垫层铺设在CFG桩和碎石置换层上部，所述碎石置换层为CFG桩的桩顶高程以下一定范围的软土层采用碎石置换形成。本发明的的褥垫层在以往的碎石层结构型式的基础上，采用了嵌入式设计，垫层上方为防渗水泥土层，垫层下方为碎石加筋材料，桩顶以下一定厚度的桩间土采用碎石置换层设计。本嵌入式CFG桩复合地基具有优化复合地基承载力模式、降低桩土应力比、促进软基排水固结以及提高褥垫层防渗性能的作用。
Hydraulic engineering CFG pile composite foundation and construction method
一种水利工程CFG桩复合地基及施工方法
REN JIALI (author) / GONG HANZHONG (author) / WANG HANWU (author) / LI ZHENHUA (author) / GUO PENGJIE (author) / LIN WEI (author) / CHEN HANG (author) / DONG YU (author) / ZHANG NAN (author) / YE YANLONG (author)
2024-02-06
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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