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A platform for research: civil engineering, architecture and urbanism
Construction method for large-diameter pile foundation of deep sand layer in karst development area
The invention discloses a large-diameter pile foundation construction method for a deep sand layer in a karst development area. The method comprises the following steps that S1, a site is leveled, and a pile placing position is measured; s2, reinforcing the earth surface; s3, placing a base plate; s4, the drilling machine is in-place and centered; s5, the casing pipe is hoisted and placed; s6, a sleeve is pressed in, the perpendicularity is measured again, and a grab bucket takes soil to form a hole; s7, a reinforcement cage is hoisted and placed; s8, a guide pipe is installed; s9, concrete is poured, and the pipe is pulled out gradually; and S10, pile foundation detection and pile forming quality detection. According to the large-diameter pile foundation construction method, the phenomenon of hole collapse or slurry leakage during construction of thick sand layers, large karst caves and bead-like karst caves in stratums is avoided, the construction progress is fast, the construction effect is excellent, meanwhile, the high safety coefficient is achieved, and the large-diameter pile foundation construction method is suitable for the technical field of road and bridge building construction.
本发明公开了一种岩溶发育地区深厚砂层大直径桩基施工方法，包括如下步骤：S1:场地平整、测放桩位；S2:地表加固；S3:安放路基板；S4:钻机就位对中；S5:吊装安放套管；S6:压入套管、复测垂直度及抓斗取土成孔；S7:吊放钢筋笼；S8:安装导管；S9:浇筑混凝土、逐次拔管；S10:桩基检测及成桩质量。本发明提供的大直径桩基施工方法，避免了在地层中存在较厚砂层、大型溶洞及串珠状溶洞施工时，出现塌孔或漏浆的现象，且施工进度快、施工功效优良，同时具备较高的安全系数，适用于路桥建筑施工技术领域。
Construction method for large-diameter pile foundation of deep sand layer in karst development area
The invention discloses a large-diameter pile foundation construction method for a deep sand layer in a karst development area. The method comprises the following steps that S1, a site is leveled, and a pile placing position is measured; s2, reinforcing the earth surface; s3, placing a base plate; s4, the drilling machine is in-place and centered; s5, the casing pipe is hoisted and placed; s6, a sleeve is pressed in, the perpendicularity is measured again, and a grab bucket takes soil to form a hole; s7, a reinforcement cage is hoisted and placed; s8, a guide pipe is installed; s9, concrete is poured, and the pipe is pulled out gradually; and S10, pile foundation detection and pile forming quality detection. According to the large-diameter pile foundation construction method, the phenomenon of hole collapse or slurry leakage during construction of thick sand layers, large karst caves and bead-like karst caves in stratums is avoided, the construction progress is fast, the construction effect is excellent, meanwhile, the high safety coefficient is achieved, and the large-diameter pile foundation construction method is suitable for the technical field of road and bridge building construction.
本发明公开了一种岩溶发育地区深厚砂层大直径桩基施工方法，包括如下步骤：S1:场地平整、测放桩位；S2:地表加固；S3:安放路基板；S4:钻机就位对中；S5:吊装安放套管；S6:压入套管、复测垂直度及抓斗取土成孔；S7:吊放钢筋笼；S8:安装导管；S9:浇筑混凝土、逐次拔管；S10:桩基检测及成桩质量。本发明提供的大直径桩基施工方法，避免了在地层中存在较厚砂层、大型溶洞及串珠状溶洞施工时，出现塌孔或漏浆的现象，且施工进度快、施工功效优良，同时具备较高的安全系数，适用于路桥建筑施工技术领域。
Construction method for large-diameter pile foundation of deep sand layer in karst development area
岩溶发育地区深厚砂层大直径桩基施工方法
WANG LEI (author) / ZHAO HAIBO (author) / GONG BO (author) / XIN SHENGHUI (author) / CHANG HUIJUN (author) / WANG JIANZHONG (author) / FAN JINYU (author) / MA LIANG (author) / HU YUNLONG (author) / SONG XIN (author)
2022-08-02
Patent
Electronic Resource
Chinese
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