A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Reinforcing method for terrace loess foundation and built variable-rigidity composite pile composite foundation
The invention discloses a reinforcing method for a terrace loess foundation and a built variable-rigidity composite pile composite foundation. The reinforcing method comprises the steps that an area needing to be reinforced is leveled, and shallow pits are dug; upper-layer holes are generated, lower-layer holes are drilled according to the water content of a loess layer below an A layer, and pile holes are formed; rigid pile material mixtures are poured and vibrated, then flexible pile material mixtures are filled, layered tamping is carried out till the pile holes are filled, and variable-rigidity composite piles are built; the second variable-rigidity composite pile is built; all the variable-rigidity composite piles are built in the reinforced area; bulk materials are laid in the shallow pits; and after cement is fully hardened, the terrace loess area foundation is reinforced. The variable-rigidity composite pile composite foundation comprises the multiple vertically-arranged variable-rigidity composite piles, each variable-rigidity composite pile is formed by fixedly connecting an upper pile body and a lower pile body which are arranged up and down, and the top ends of all the upper pile bodies are fixedly connected through a cushion layer. According to the reinforcing method, on the premise that the sedimentation requirement is met, stress concentration of the bottom of the foundation is reduced, and the bottom of the foundation is prevented from being punched.
本发明公开了一种阶地黄土地基加固方法及建造的变刚度组合桩复合地基，加固：平整需加固区域，挖浅坑；生成上层孔，根据A层下方黄土层含水量钻下层孔，成桩孔；灌注刚性桩材拌合料并振捣，再填入柔性桩材拌合料，分层夯实，直至填满桩孔，建成变刚度组合桩；建造第二根变刚度组合桩；至加固区域内建成所有变刚度组合桩；浅坑内铺设散体材料；水泥充分硬化后，完成对阶地黄土区地基的加固。变刚度组合桩复合地基包括多根竖直设置的变刚度组合桩，变刚度组合桩由上下设置的上部桩体和下部桩体固接而成，所有上部桩体的顶端通过垫层相固接。该加固方法能够在满足沉降要求的前提下，减小基础底部的应力集中，避免基础底部受到冲切作用。
Reinforcing method for terrace loess foundation and built variable-rigidity composite pile composite foundation
The invention discloses a reinforcing method for a terrace loess foundation and a built variable-rigidity composite pile composite foundation. The reinforcing method comprises the steps that an area needing to be reinforced is leveled, and shallow pits are dug; upper-layer holes are generated, lower-layer holes are drilled according to the water content of a loess layer below an A layer, and pile holes are formed; rigid pile material mixtures are poured and vibrated, then flexible pile material mixtures are filled, layered tamping is carried out till the pile holes are filled, and variable-rigidity composite piles are built; the second variable-rigidity composite pile is built; all the variable-rigidity composite piles are built in the reinforced area; bulk materials are laid in the shallow pits; and after cement is fully hardened, the terrace loess area foundation is reinforced. The variable-rigidity composite pile composite foundation comprises the multiple vertically-arranged variable-rigidity composite piles, each variable-rigidity composite pile is formed by fixedly connecting an upper pile body and a lower pile body which are arranged up and down, and the top ends of all the upper pile bodies are fixedly connected through a cushion layer. According to the reinforcing method, on the premise that the sedimentation requirement is met, stress concentration of the bottom of the foundation is reduced, and the bottom of the foundation is prevented from being punched.
本发明公开了一种阶地黄土地基加固方法及建造的变刚度组合桩复合地基，加固：平整需加固区域，挖浅坑；生成上层孔，根据A层下方黄土层含水量钻下层孔，成桩孔；灌注刚性桩材拌合料并振捣，再填入柔性桩材拌合料，分层夯实，直至填满桩孔，建成变刚度组合桩；建造第二根变刚度组合桩；至加固区域内建成所有变刚度组合桩；浅坑内铺设散体材料；水泥充分硬化后，完成对阶地黄土区地基的加固。变刚度组合桩复合地基包括多根竖直设置的变刚度组合桩，变刚度组合桩由上下设置的上部桩体和下部桩体固接而成，所有上部桩体的顶端通过垫层相固接。该加固方法能够在满足沉降要求的前提下，减小基础底部的应力集中，避免基础底部受到冲切作用。
Reinforcing method for terrace loess foundation and built variable-rigidity composite pile composite foundation
阶地黄土地基加固方法及建造的变刚度组合桩复合地基
LYU QINGFENG (author) / HAN QILIANG (author) / ZHAO YANXU (author) / GAO FEI (author) / GUO LIANXING (author) / LIU BEI (author)
2021-07-06
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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