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Pulling-resistant and compression-resistant prestressed jet expansion frustum press-grouting pile, design method and construction method
The invention discloses an anti-pulling and anti-compression prestressed jet expansion frustum press-grouting pile, a design method and a construction method. The press-grouting pile is composed of a pile body and a prestressed rod body combined component located in the pile body. The pile body comprises a pile cap and a pile body which are of an integrated structure, at least three rib plates are arranged on the peripheral face of the pile body, and at least one double-frustum expanding body is arranged below the pile body. The prestressed rod body combined component comprises a rod body tensioning end component, a rod body steel pull rod component and a rod body anchoring end component which are sequentially connected from top to bottom. The pile type can be used for an uplift pile and an uplift and compression resistant pile, and is high in bearing capacity, small in deformation and low in manufacturing cost; the prestress is applied at the top of the pile, so that cross construction of raft plates is avoided, and the construction period is shortened; a pile cap is arranged at the top of the pile to prevent local compression damage of pile end concrete during prestress tensioning; the pile end is of a bottom anchor type structure, and stress is reasonable; the steel pull rod in the double-frustum expanding body is sleeved with the external thread anchoring steel pipe and filled with the high-strength grouting material, corrosion resistance is good, and anchoring is stable and reliable.
本发明公开了一种抗拔抗压预应力喷扩锥台压灌桩及设计方法和施工方法，该压灌桩由桩体和位于桩体内的预应力杆体组合构件组成；桩体包括一体式结构的桩帽、桩身，桩身的外周面上设有至少三个肋板，桩身的下方设有至少一个双锥台扩径体；预应力杆体组合构件包括自上而下依次相连的杆体张拉端构件、杆体钢拉杆构件和杆体锚固端构件。该桩型可用于抗拔桩，也可用于抗拔抗压桩，承载力高，变形小，造价低；施加预应力的位置在桩顶，避免了筏板交叉施工，节省了工期；桩顶设置桩帽，防止张拉预应力时桩端混凝土局部受压破坏；桩端为底锚型结构，受力合理；双锥台扩径体中钢拉杆外套外螺纹锚固钢管，内填高强灌浆料，耐腐蚀性好，锚固稳定可靠。
Pulling-resistant and compression-resistant prestressed jet expansion frustum press-grouting pile, design method and construction method
The invention discloses an anti-pulling and anti-compression prestressed jet expansion frustum press-grouting pile, a design method and a construction method. The press-grouting pile is composed of a pile body and a prestressed rod body combined component located in the pile body. The pile body comprises a pile cap and a pile body which are of an integrated structure, at least three rib plates are arranged on the peripheral face of the pile body, and at least one double-frustum expanding body is arranged below the pile body. The prestressed rod body combined component comprises a rod body tensioning end component, a rod body steel pull rod component and a rod body anchoring end component which are sequentially connected from top to bottom. The pile type can be used for an uplift pile and an uplift and compression resistant pile, and is high in bearing capacity, small in deformation and low in manufacturing cost; the prestress is applied at the top of the pile, so that cross construction of raft plates is avoided, and the construction period is shortened; a pile cap is arranged at the top of the pile to prevent local compression damage of pile end concrete during prestress tensioning; the pile end is of a bottom anchor type structure, and stress is reasonable; the steel pull rod in the double-frustum expanding body is sleeved with the external thread anchoring steel pipe and filled with the high-strength grouting material, corrosion resistance is good, and anchoring is stable and reliable.
本发明公开了一种抗拔抗压预应力喷扩锥台压灌桩及设计方法和施工方法，该压灌桩由桩体和位于桩体内的预应力杆体组合构件组成；桩体包括一体式结构的桩帽、桩身，桩身的外周面上设有至少三个肋板，桩身的下方设有至少一个双锥台扩径体；预应力杆体组合构件包括自上而下依次相连的杆体张拉端构件、杆体钢拉杆构件和杆体锚固端构件。该桩型可用于抗拔桩，也可用于抗拔抗压桩，承载力高，变形小，造价低；施加预应力的位置在桩顶，避免了筏板交叉施工，节省了工期；桩顶设置桩帽，防止张拉预应力时桩端混凝土局部受压破坏；桩端为底锚型结构，受力合理；双锥台扩径体中钢拉杆外套外螺纹锚固钢管，内填高强灌浆料，耐腐蚀性好，锚固稳定可靠。
Pulling-resistant and compression-resistant prestressed jet expansion frustum press-grouting pile, design method and construction method
抗拔抗压预应力喷扩锥台压灌桩及设计方法和施工方法
HUANG YUANCHEN (author) / HUANG YUCHEN (author) / LI JINLIANG (author)
2024-04-02
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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