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A platform for research: civil engineering, architecture and urbanism
Pile foundation construction method and dam foundation treatment method for deep covering layer containing weak intercalated layer
The invention discloses a pile foundation construction method and a dam foundation treatment method for a deep covering layer containing a weak intercalated layer, relates to the field of water conservancy and hydropower engineering, and solves the problem that a pile section, penetrating through the weak intercalated layer, of a gravel pile is prone to bulging shear failure. Comprising the following steps: determining the position and thickness of a weak intercalated layer in a covering layer; the weak interlayer in the pile hole of the gravel pile is reinforced, so that the weak interlayer becomes a reinforced layer; and the reinforcing layer in the pile hole is punched through, and a gravel pile is constructed in the pile hole. According to the dam foundation treatment method for the deep covering layer containing the weak intercalated layer, on the basis of the construction method, construction is repeated in the next pile hole till treatment of all the pile holes is completed. The reinforcing ring is arranged on the outer side of the gravel pile, the reinforcing ring has the radial hooping and restraining effect on the gravel pile, bulging shear damage of the gravel pile can be restrained, and the gravel pile can be used for a foundation of a deep covering layer containing a weak intercalated layer.
本发明公开了一种含软弱夹层的深厚覆盖层的桩基施工方法与坝基处理方法，涉及水利水电工程领域，解决碎石桩穿过软弱夹层的桩段容易出现鼓胀剪切破坏的问题，采用的技术方案是：含软弱夹层的深厚覆盖层的桩基施工方法，包括：确定覆盖层内软弱夹层的位置及厚度；对碎石桩的桩孔内的软弱夹层进行加固，使软弱夹层成为加固层；打穿桩孔内的加固层，并在桩孔内施工碎石桩。含软弱夹层的深厚覆盖层的坝基处理方法，在上述施工方法的基础上，在下一桩孔重复施工，直至完成全部桩孔的处理。本发明在碎石桩外侧设置加固圈，加固圈对碎石桩起到的径向围箍约束作用，可以抑制碎石桩出现鼓胀剪切破坏，使碎石桩可用于含软弱夹层的深厚覆盖层的地基。
Pile foundation construction method and dam foundation treatment method for deep covering layer containing weak intercalated layer
The invention discloses a pile foundation construction method and a dam foundation treatment method for a deep covering layer containing a weak intercalated layer, relates to the field of water conservancy and hydropower engineering, and solves the problem that a pile section, penetrating through the weak intercalated layer, of a gravel pile is prone to bulging shear failure. Comprising the following steps: determining the position and thickness of a weak intercalated layer in a covering layer; the weak interlayer in the pile hole of the gravel pile is reinforced, so that the weak interlayer becomes a reinforced layer; and the reinforcing layer in the pile hole is punched through, and a gravel pile is constructed in the pile hole. According to the dam foundation treatment method for the deep covering layer containing the weak intercalated layer, on the basis of the construction method, construction is repeated in the next pile hole till treatment of all the pile holes is completed. The reinforcing ring is arranged on the outer side of the gravel pile, the reinforcing ring has the radial hooping and restraining effect on the gravel pile, bulging shear damage of the gravel pile can be restrained, and the gravel pile can be used for a foundation of a deep covering layer containing a weak intercalated layer.
本发明公开了一种含软弱夹层的深厚覆盖层的桩基施工方法与坝基处理方法，涉及水利水电工程领域，解决碎石桩穿过软弱夹层的桩段容易出现鼓胀剪切破坏的问题，采用的技术方案是：含软弱夹层的深厚覆盖层的桩基施工方法，包括：确定覆盖层内软弱夹层的位置及厚度；对碎石桩的桩孔内的软弱夹层进行加固，使软弱夹层成为加固层；打穿桩孔内的加固层，并在桩孔内施工碎石桩。含软弱夹层的深厚覆盖层的坝基处理方法，在上述施工方法的基础上，在下一桩孔重复施工，直至完成全部桩孔的处理。本发明在碎石桩外侧设置加固圈，加固圈对碎石桩起到的径向围箍约束作用，可以抑制碎石桩出现鼓胀剪切破坏，使碎石桩可用于含软弱夹层的深厚覆盖层的地基。
Pile foundation construction method and dam foundation treatment method for deep covering layer containing weak intercalated layer
含软弱夹层的深厚覆盖层的桩基施工方法与坝基处理方法
YANG XING (author) / ZUO LEIGAO (author) / ZHANG DAN (author) / WANG FENG (author) / PENG WENMING (author) / RAN CONGYONG (author) / WANG QINGLONG (author)
2023-08-01
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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