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Post-grouting construction process for all-casing cast-in-situ bored pile
The invention discloses a post-grouting construction technology for an all-casing cast-in-situ bored pile. The post-grouting construction technology comprises the steps that preparation work is made in advance; construction is conducted on the site according to the designed scheme; and grouting operation is conducted, specifically, a grouting pump is started, pressure is gradually increased, grout is injected into the pile bottom or the soil layer around the pile from the bottom of a grouting pipe, the initial grouting pressure is controlled to range from 0.5 MPa to 1.0 MPa, and in the grouting process, the grouting pipe is gradually lifted, and the grout is evenly distributed on the pile bottom or the soil layer around the pile. Compared with the prior art, the method has the advantages that the bearing capacity of a pile foundation is improved, grouting and filling are conducted, specifically, high-pressure grout is injected into a soil layer at the bottom of the pile or around the pile, pores and gaps of the soil layer are filled, and the compactness and the bearing capacity of a soil body are improved.
本发明公开一种全套管钻孔灌注桩后压浆施工工艺，包括：做好提前准备工作；根据设计的方案在场地进行施工；进行压浆操作，包括：启动压浆泵，逐渐提高压力，使浆液从压浆管底部开始注入桩底或桩周围土层，压浆初期压力控制在0.5‑1.0MPa之间，在压浆过程中，逐渐提升压浆管，使浆液均匀分布在桩底或桩周围土层。本发明与现有技术相比的优点在于：提高桩基承载力：压浆填充：通过在桩底或桩周围土层注入高压浆液，填充土层孔隙和空隙，提高土体的密实度和承载力。
Post-grouting construction process for all-casing cast-in-situ bored pile
The invention discloses a post-grouting construction technology for an all-casing cast-in-situ bored pile. The post-grouting construction technology comprises the steps that preparation work is made in advance; construction is conducted on the site according to the designed scheme; and grouting operation is conducted, specifically, a grouting pump is started, pressure is gradually increased, grout is injected into the pile bottom or the soil layer around the pile from the bottom of a grouting pipe, the initial grouting pressure is controlled to range from 0.5 MPa to 1.0 MPa, and in the grouting process, the grouting pipe is gradually lifted, and the grout is evenly distributed on the pile bottom or the soil layer around the pile. Compared with the prior art, the method has the advantages that the bearing capacity of a pile foundation is improved, grouting and filling are conducted, specifically, high-pressure grout is injected into a soil layer at the bottom of the pile or around the pile, pores and gaps of the soil layer are filled, and the compactness and the bearing capacity of a soil body are improved.
本发明公开一种全套管钻孔灌注桩后压浆施工工艺，包括：做好提前准备工作；根据设计的方案在场地进行施工；进行压浆操作，包括：启动压浆泵，逐渐提高压力，使浆液从压浆管底部开始注入桩底或桩周围土层，压浆初期压力控制在0.5‑1.0MPa之间，在压浆过程中，逐渐提升压浆管，使浆液均匀分布在桩底或桩周围土层。本发明与现有技术相比的优点在于：提高桩基承载力：压浆填充：通过在桩底或桩周围土层注入高压浆液，填充土层孔隙和空隙，提高土体的密实度和承载力。
Post-grouting construction process for all-casing cast-in-situ bored pile
一种全套管钻孔灌注桩后压浆施工工艺
WEI SHAOBO (author) / CHEN CHUNYIN (author) / FAN YUNLONG (author) / YAO HAIFENG (author) / DU XIANGMEI (author) / YUAN HUANHUAN (author) / HU GAOYUAN (author)
2024-10-15
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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