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A platform for research: civil engineering, architecture and urbanism
Stratum cast-in-situ bored pile with soft upper part and hard lower part
The invention discloses a stratum cast-in-situ bored pile with a soft upper part and a hard lower part. The stratum cast-in-situ bored pile comprises a foundation, a strongly weathered granite layer,coarse sand, silty clay, mucky soil, a formed hole, a sleeve, a drill rod, drill teeth, a down-the-hole hammer, a reinforcement cage, vertical reinforcements, connecting reinforcements and a concretefilling mechanism. The stratum cast-in-situ bored pile has the beneficial effects that the drill rod and an outer side sleeve are used for double-combination drilling, an outer side sleeve protectionwall facilitates continuous soil discharging of the drill rod, the overall rigidity is high, the drilling force is large, the hole forming precision is high, the drill rod and outer side sleeve can adapt to powerful drilling of various complex stratums and is suitable for construction of various construction methods, a mud protection wall is replaced with the sleeve following protection wall in the drill rod drilling process, environmental pollution caused by slurry can be reduced conveniently, drilling is conducted through double combination of a drill rod drill bit and the outer side sleeve,hole forming can be achieved conveniently and rapidly, dust is little, noise is low, environmental pollution is small in the hole forming process, the reinforcement cage is hung on the steel casing through threaded steel bars, and the reinforcement cage can be prevented from falling off the cage or floating in the pouring process.
本发明公开了一种上软下硬的地层钻孔灌注桩，包括地基、强风化花岗岩层、粗沙、粉质粘土、淤泥质土、成孔、套管、钻杆、钻齿、潜孔锤、钢筋笼、竖向钢筋、连接筋和混凝土灌装机构。本发明的有益效果是：钻杆与外侧套管双重组合钻孔，外侧套管护壁，便于钻杆连续排土，整体刚性强、钻削力大、成孔精度高，可应对各种复杂地层强力钻削，适用多种工法的施工，钻杆钻进过程中利用套管跟进护壁取代泥浆护壁，便于减少泥浆对环境的污染，钻杆钻头与外侧套管双重组合进行钻孔，便于快速实现成孔，且在成孔过程中粉尘少、噪音小，环境污染小，钢筋笼的定位采用螺纹钢筋悬挂在钢护筒上，便于防止钢筋笼掉笼或在灌注过程中浮笼。
Stratum cast-in-situ bored pile with soft upper part and hard lower part
The invention discloses a stratum cast-in-situ bored pile with a soft upper part and a hard lower part. The stratum cast-in-situ bored pile comprises a foundation, a strongly weathered granite layer,coarse sand, silty clay, mucky soil, a formed hole, a sleeve, a drill rod, drill teeth, a down-the-hole hammer, a reinforcement cage, vertical reinforcements, connecting reinforcements and a concretefilling mechanism. The stratum cast-in-situ bored pile has the beneficial effects that the drill rod and an outer side sleeve are used for double-combination drilling, an outer side sleeve protectionwall facilitates continuous soil discharging of the drill rod, the overall rigidity is high, the drilling force is large, the hole forming precision is high, the drill rod and outer side sleeve can adapt to powerful drilling of various complex stratums and is suitable for construction of various construction methods, a mud protection wall is replaced with the sleeve following protection wall in the drill rod drilling process, environmental pollution caused by slurry can be reduced conveniently, drilling is conducted through double combination of a drill rod drill bit and the outer side sleeve,hole forming can be achieved conveniently and rapidly, dust is little, noise is low, environmental pollution is small in the hole forming process, the reinforcement cage is hung on the steel casing through threaded steel bars, and the reinforcement cage can be prevented from falling off the cage or floating in the pouring process.
本发明公开了一种上软下硬的地层钻孔灌注桩，包括地基、强风化花岗岩层、粗沙、粉质粘土、淤泥质土、成孔、套管、钻杆、钻齿、潜孔锤、钢筋笼、竖向钢筋、连接筋和混凝土灌装机构。本发明的有益效果是：钻杆与外侧套管双重组合钻孔，外侧套管护壁，便于钻杆连续排土，整体刚性强、钻削力大、成孔精度高，可应对各种复杂地层强力钻削，适用多种工法的施工，钻杆钻进过程中利用套管跟进护壁取代泥浆护壁，便于减少泥浆对环境的污染，钻杆钻头与外侧套管双重组合进行钻孔，便于快速实现成孔，且在成孔过程中粉尘少、噪音小，环境污染小，钢筋笼的定位采用螺纹钢筋悬挂在钢护筒上，便于防止钢筋笼掉笼或在灌注过程中浮笼。
Stratum cast-in-situ bored pile with soft upper part and hard lower part
一种上软下硬的地层钻孔灌注桩
LI XIANGFENG (author) / TIAN ZUOHUA (author) / HU DONGYUE (author) / CHEN HAN (author) / ZHANG ZHENXIN (author) / HE XIANHU (author) / JIA BAOSHENG (author) / WANG JIA (author) / LIU MINGMING (author) / ZHANG YUZENG (author)
2021-03-30
Patent
Electronic Resource
Chinese
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