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A platform for research: civil engineering, architecture and urbanism
Permanent steel casing rotary drilling hole-forming cast-in-place pile for loose pebble stratum and construction method
The invention relates to a loose pebble stratum permanent steel casing rotary drilling hole-forming cast-in-place pile and a construction method, a steel ring with a blade foot at the top is arranged at the top of a permanent steel casing to serve as a stabilizing device, and the stability of the permanent steel casing is effectively guaranteed; aiming at a non-water-rich loose pebble stratum, a special drill bit stirring technology is adopted, clay, cement dry powder, cement slurry and other consolidation materials are arranged in the loose pebble stratum to be subjected to pile forming and a peripheral area, and the special drill bit is used for stirring to effectively consolidate the loose pebble stratum to be subjected to pile forming and the peripheral area; aiming at the water-rich loose pebble stratum, the invention provides a water-rich loose pebble stratum permanent steel casing group conjoined temporary stabilizing technology, the stability of the water-rich loose pebble stratum permanent steel casing is effectively ensured, the bottom of the steel casing is sealed by using underwater concrete, the grouting effect is effectively prevented from being influenced due to the fact that grout rushes out during grouting, and the sinking of the steel casing is effectively ensured.
本发明涉及一种松散卵石地层永久钢护筒旋挖成孔灌注桩及施工方法，在永久钢护筒顶部设置顶部带刃脚钢环作为稳固装置，有效保证了永久钢护筒的稳固性；针对非富水的松散卵石地层，采用内置粘土、水泥干粉、水泥浆等固结材料专用钻头搅拌技术，对待成桩及周边区域的松散卵石地层内置黏土、水泥干粉、水泥浆等固结材料，并通过专用钻头搅拌，有效固结待成桩及周边区域的松散卵石地层；针对富水松散卵石地层，提出了富水松散卵石地层永久钢护筒群连体临时稳固技术，有效保证了富水松散卵石地层永久钢护筒的稳固性，在钢护筒内用水下混凝土封底，有效防止注浆时浆液冲出而影响注浆效果，有效保证了钢护筒的沉放。
Permanent steel casing rotary drilling hole-forming cast-in-place pile for loose pebble stratum and construction method
The invention relates to a loose pebble stratum permanent steel casing rotary drilling hole-forming cast-in-place pile and a construction method, a steel ring with a blade foot at the top is arranged at the top of a permanent steel casing to serve as a stabilizing device, and the stability of the permanent steel casing is effectively guaranteed; aiming at a non-water-rich loose pebble stratum, a special drill bit stirring technology is adopted, clay, cement dry powder, cement slurry and other consolidation materials are arranged in the loose pebble stratum to be subjected to pile forming and a peripheral area, and the special drill bit is used for stirring to effectively consolidate the loose pebble stratum to be subjected to pile forming and the peripheral area; aiming at the water-rich loose pebble stratum, the invention provides a water-rich loose pebble stratum permanent steel casing group conjoined temporary stabilizing technology, the stability of the water-rich loose pebble stratum permanent steel casing is effectively ensured, the bottom of the steel casing is sealed by using underwater concrete, the grouting effect is effectively prevented from being influenced due to the fact that grout rushes out during grouting, and the sinking of the steel casing is effectively ensured.
本发明涉及一种松散卵石地层永久钢护筒旋挖成孔灌注桩及施工方法，在永久钢护筒顶部设置顶部带刃脚钢环作为稳固装置，有效保证了永久钢护筒的稳固性；针对非富水的松散卵石地层，采用内置粘土、水泥干粉、水泥浆等固结材料专用钻头搅拌技术，对待成桩及周边区域的松散卵石地层内置黏土、水泥干粉、水泥浆等固结材料，并通过专用钻头搅拌，有效固结待成桩及周边区域的松散卵石地层；针对富水松散卵石地层，提出了富水松散卵石地层永久钢护筒群连体临时稳固技术，有效保证了富水松散卵石地层永久钢护筒的稳固性，在钢护筒内用水下混凝土封底，有效防止注浆时浆液冲出而影响注浆效果，有效保证了钢护筒的沉放。
Permanent steel casing rotary drilling hole-forming cast-in-place pile for loose pebble stratum and construction method
松散卵石地层永久钢护筒旋挖成孔灌注桩及施工方法
2024-02-06
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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