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A platform for research: civil engineering, architecture and urbanism
Pile foundation treatment method for eliminating negative friction resistance of collapsible loess
The invention discloses a pile foundation treatment method for eliminating negative friction resistance of collapsible loess. The pile foundation treatment method is specifically implemented according to the following steps that 1, a pile hole is formed in the position of a pile foundation; 2, a PVC sleeve is inserted into the pile hole; 3, a concrete pile is inserted into the PVC sleeve, and the concrete pile is pressed into a non-collapsible stratum through a static pressure method; 4, the collapsible loess around the PVC sleeve is treated through a water soaking method; and 5, after collapsing deformation of loess around the PVC sleeve 5 is completely completed, cement paste is injected along a gap between the sleeve and the concrete pile. A large amount of engineering cost caused by replacement filling, tamping, compaction, silicification and other methods adopted by the collapsible loess foundation is avoided.
本发明公开了一种消除湿陷性黄土负摩阻的桩基处理方法，具体按照以下步骤实施：步骤1、在桩基位置掏出桩孔；步骤2、在桩孔中插入PVC套筒；步骤3、沿PVC套筒内插入混凝土桩，用静压法将混凝土桩压入非湿陷地层；步骤4、用浸水法处理PVC套筒周围的湿陷性黄土；步骤5、待PVC套筒5周围黄土湿陷变形全部完成后，沿套筒与混凝土桩之间的缝隙注入水泥浆。避免了湿陷性黄土地基采用换填、夯实、挤密、硅化等方法所产生的大量工程费用。
Pile foundation treatment method for eliminating negative friction resistance of collapsible loess
The invention discloses a pile foundation treatment method for eliminating negative friction resistance of collapsible loess. The pile foundation treatment method is specifically implemented according to the following steps that 1, a pile hole is formed in the position of a pile foundation; 2, a PVC sleeve is inserted into the pile hole; 3, a concrete pile is inserted into the PVC sleeve, and the concrete pile is pressed into a non-collapsible stratum through a static pressure method; 4, the collapsible loess around the PVC sleeve is treated through a water soaking method; and 5, after collapsing deformation of loess around the PVC sleeve 5 is completely completed, cement paste is injected along a gap between the sleeve and the concrete pile. A large amount of engineering cost caused by replacement filling, tamping, compaction, silicification and other methods adopted by the collapsible loess foundation is avoided.
本发明公开了一种消除湿陷性黄土负摩阻的桩基处理方法，具体按照以下步骤实施：步骤1、在桩基位置掏出桩孔；步骤2、在桩孔中插入PVC套筒；步骤3、沿PVC套筒内插入混凝土桩，用静压法将混凝土桩压入非湿陷地层；步骤4、用浸水法处理PVC套筒周围的湿陷性黄土；步骤5、待PVC套筒5周围黄土湿陷变形全部完成后，沿套筒与混凝土桩之间的缝隙注入水泥浆。避免了湿陷性黄土地基采用换填、夯实、挤密、硅化等方法所产生的大量工程费用。
Pile foundation treatment method for eliminating negative friction resistance of collapsible loess
一种消除湿陷性黄土负摩阻的桩基处理方法
SHAO SHENGJUN (author) / ZHAO KAI (author)
2021-12-24
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2023