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A platform for research: civil engineering, architecture and urbanism
Combined hole-forming construction method for Binjiang sandy gravel geological pile foundation
The invention discloses a combined hole forming construction method for a Binjiang sandy gravel geological pile foundation. The combined hole forming construction method comprises the following steps that S1, construction investigation is conducted; s2, field leveling and construction lofting are carried out; s3, a pile casing is installed; s4, rotary excavating drilling is carried out; s5, drilling through the percussion drill. The rotary drilling method is high in hole forming efficiency, especially for a reinforced belt sandy gravel stratum; a three-dimensional perpendicularity controller of the rotary excavating pile is utilized, so that the problem of drilling deflection caused by uneven stratums can be effectively reduced; the lower portion adopts the slurry retaining wall and the impact hole forming technology, noise is reduced, the influence of slurry pollution on the environment is reduced, meanwhile, secondary hole cleaning can be conducted through slurry after the reinforcement cage is put down, and control over sediment of a rotary excavating pile is better facilitated.
本发明公开一种滨江砂卵石地质桩基联合成孔施工方法，包括如下步骤：S1、施工勘察；S2、场地平整及施工放样；S3、安装护筒；S4、旋挖钻进；S5、冲击钻钻进，本发明旋挖钻成孔效率高，尤其针对加筋带砂卵石地层；利用旋挖桩自带三维垂直度控制仪可以有效降低因地层不均匀导致钻孔歪斜问题；下部采用泥浆护壁+冲击成孔工艺有利于减小噪音，降低泥浆污染对环境的影响，同时在钢筋笼下放后可以利用泥浆二次清孔，比旋挖桩沉渣控制更有利。
Combined hole-forming construction method for Binjiang sandy gravel geological pile foundation
The invention discloses a combined hole forming construction method for a Binjiang sandy gravel geological pile foundation. The combined hole forming construction method comprises the following steps that S1, construction investigation is conducted; s2, field leveling and construction lofting are carried out; s3, a pile casing is installed; s4, rotary excavating drilling is carried out; s5, drilling through the percussion drill. The rotary drilling method is high in hole forming efficiency, especially for a reinforced belt sandy gravel stratum; a three-dimensional perpendicularity controller of the rotary excavating pile is utilized, so that the problem of drilling deflection caused by uneven stratums can be effectively reduced; the lower portion adopts the slurry retaining wall and the impact hole forming technology, noise is reduced, the influence of slurry pollution on the environment is reduced, meanwhile, secondary hole cleaning can be conducted through slurry after the reinforcement cage is put down, and control over sediment of a rotary excavating pile is better facilitated.
本发明公开一种滨江砂卵石地质桩基联合成孔施工方法，包括如下步骤：S1、施工勘察；S2、场地平整及施工放样；S3、安装护筒；S4、旋挖钻进；S5、冲击钻钻进，本发明旋挖钻成孔效率高，尤其针对加筋带砂卵石地层；利用旋挖桩自带三维垂直度控制仪可以有效降低因地层不均匀导致钻孔歪斜问题；下部采用泥浆护壁+冲击成孔工艺有利于减小噪音，降低泥浆污染对环境的影响，同时在钢筋笼下放后可以利用泥浆二次清孔，比旋挖桩沉渣控制更有利。
Combined hole-forming construction method for Binjiang sandy gravel geological pile foundation
一种滨江砂卵石地质桩基联合成孔施工方法
YANG GUANGXU (author) / MA LEI (author) / CAI CHANGHONG (author) / ZHAO WEI (author) / XIA YONG (author) / JIANG CHUANTONG (author)
2024-11-05
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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