A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Layered annular dense hole post-grouting construction method for pulling-resistant and pressure-resistant cast-in-place pile
The invention relates to the technical field of cast-in-place piles, and discloses an anti-pulling and anti-pressure cast-in-place pile layered annular dense hole post-grouting construction method which comprises the following construction steps that a pile hole is formed, a bearing layer is arranged below the pile hole, a reinforcement cage is put into the pile hole, and a pile bottom grouting pipe and a pile side grouting pipe are arranged on the reinforcement cage. A plurality of bottom grouting openings are formed in the pile bottom grouting pipe; the bottoms of the multiple pile side grouting pipes are sequentially arranged at intervals in the axial direction of the reinforcement cage, the bottoms of the multiple pile side grouting pipes are connected with annular grouting pipes correspondingly, the annular grouting pipes are arranged in the circumferential direction of the reinforcement cage in a surrounding mode, and multiple layered grouting openings are formed in the annular grouting pipes; concrete is poured into the pile hole through the guide pipe, then grout is sequentially injected into the pile hole through the multiple pile side grouting pipes from top to bottom, the grout is sprayed out through the annular grouting pipe to form a layered grout layer, and the layered grout layer permeates into a soil body on the outer side of the pile hole; and then grout is injected into the bottom of the pile hole through a pile bottom grouting pipe, a pile bottom grout layer is formed, and the pile bottom grout layer permeates into the bearing layer.
本发明涉及灌注桩的技术领域，公开了抗拔抗压灌注桩分层环形密集孔后注浆施工方法，包括以下施工步骤：成型桩孔，桩孔的下方具有持力层，在桩孔中下入钢筋笼，钢筋笼上设有桩底注浆管以及桩侧注浆管，桩底注浆管上设有多个底部注浆口；多个桩侧注浆管的底部沿着钢筋笼的轴向依序间隔布置，多个桩侧注浆管的底部分别连接有环形注浆管，环形注浆管沿着钢筋笼的周向环绕布置，环形注浆管上设有多个分层注浆口；通过导管往桩孔内灌注混凝土，再自上而下依序通过多个桩侧注浆管往桩孔内注入浆液，浆液通过环形注浆管喷出，形成分层浆层，分层浆层渗进桩孔外侧土体中；再利用桩底注浆管往桩孔的底部注入浆液，形成桩底浆层，桩底浆层渗入持力层中。
Layered annular dense hole post-grouting construction method for pulling-resistant and pressure-resistant cast-in-place pile
The invention relates to the technical field of cast-in-place piles, and discloses an anti-pulling and anti-pressure cast-in-place pile layered annular dense hole post-grouting construction method which comprises the following construction steps that a pile hole is formed, a bearing layer is arranged below the pile hole, a reinforcement cage is put into the pile hole, and a pile bottom grouting pipe and a pile side grouting pipe are arranged on the reinforcement cage. A plurality of bottom grouting openings are formed in the pile bottom grouting pipe; the bottoms of the multiple pile side grouting pipes are sequentially arranged at intervals in the axial direction of the reinforcement cage, the bottoms of the multiple pile side grouting pipes are connected with annular grouting pipes correspondingly, the annular grouting pipes are arranged in the circumferential direction of the reinforcement cage in a surrounding mode, and multiple layered grouting openings are formed in the annular grouting pipes; concrete is poured into the pile hole through the guide pipe, then grout is sequentially injected into the pile hole through the multiple pile side grouting pipes from top to bottom, the grout is sprayed out through the annular grouting pipe to form a layered grout layer, and the layered grout layer permeates into a soil body on the outer side of the pile hole; and then grout is injected into the bottom of the pile hole through a pile bottom grouting pipe, a pile bottom grout layer is formed, and the pile bottom grout layer permeates into the bearing layer.
本发明涉及灌注桩的技术领域，公开了抗拔抗压灌注桩分层环形密集孔后注浆施工方法，包括以下施工步骤：成型桩孔，桩孔的下方具有持力层，在桩孔中下入钢筋笼，钢筋笼上设有桩底注浆管以及桩侧注浆管，桩底注浆管上设有多个底部注浆口；多个桩侧注浆管的底部沿着钢筋笼的轴向依序间隔布置，多个桩侧注浆管的底部分别连接有环形注浆管，环形注浆管沿着钢筋笼的周向环绕布置，环形注浆管上设有多个分层注浆口；通过导管往桩孔内灌注混凝土，再自上而下依序通过多个桩侧注浆管往桩孔内注入浆液，浆液通过环形注浆管喷出，形成分层浆层，分层浆层渗进桩孔外侧土体中；再利用桩底注浆管往桩孔的底部注入浆液，形成桩底浆层，桩底浆层渗入持力层中。
Layered annular dense hole post-grouting construction method for pulling-resistant and pressure-resistant cast-in-place pile
抗拔抗压灌注桩分层环形密集孔后注浆施工方法
LIU ZHENGZHI (author) / CAO SONG (author) / YANG ZHIYONG (author) / LIU JUNHAO (author) / YIN QIANG (author) / XI CHENG (author) / SHI JINPING (author) / ZHANG YU (author) / YANG QINGDING (author) / YANG YONGJIE (author)
2024-01-23
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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