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A platform for research: civil engineering, architecture and urbanism
CONSTRUCTION METHOD OF STATIC PRESSING AND POST-GROUTING FOR SMALL-DIAMETER MINI-SIZED STEEL PIPE PILE
Disclosed a construction method of static pressing and post-grouting for a small-diameter mini sized steel pipe pile, which specifically includes the steps of fabrication of a small-diameter steel pipe pile, pile pressing, steel pipe inner wall cleaning, gravity grouting, pressure grouting, static curing, and concrete casting. The construction method of static pressing and post-grouting for a mini-sized steel pipe pile of the present disclosure permits pressing a small-diameter steel pipe into the soil first, placing finished deformed steel bars into the steel pipe after the inner wall of the steel pipe is cleaned up by means of water pressure, and then starting grouting. This may lead to small pile pressing resistance to the small-diameter steel pipe, small load on the pile body, unapparent soil squeezing effect, guaranteed perpendicularity, high construction efficiency, and low comprehensive cost. Besides, the finished deformed steel bars are added into the steel pipe, which provide pulling resistance on the one hand, and facilitate subsequent connection with the foundation on the other hand. Moreover, staged post-grouting is adopted, thus allowing for enhanced mixing of cement grout and soil mass surrounding the pile foundation and significantly improved bearing capacity.
CONSTRUCTION METHOD OF STATIC PRESSING AND POST-GROUTING FOR SMALL-DIAMETER MINI-SIZED STEEL PIPE PILE
Disclosed a construction method of static pressing and post-grouting for a small-diameter mini sized steel pipe pile, which specifically includes the steps of fabrication of a small-diameter steel pipe pile, pile pressing, steel pipe inner wall cleaning, gravity grouting, pressure grouting, static curing, and concrete casting. The construction method of static pressing and post-grouting for a mini-sized steel pipe pile of the present disclosure permits pressing a small-diameter steel pipe into the soil first, placing finished deformed steel bars into the steel pipe after the inner wall of the steel pipe is cleaned up by means of water pressure, and then starting grouting. This may lead to small pile pressing resistance to the small-diameter steel pipe, small load on the pile body, unapparent soil squeezing effect, guaranteed perpendicularity, high construction efficiency, and low comprehensive cost. Besides, the finished deformed steel bars are added into the steel pipe, which provide pulling resistance on the one hand, and facilitate subsequent connection with the foundation on the other hand. Moreover, staged post-grouting is adopted, thus allowing for enhanced mixing of cement grout and soil mass surrounding the pile foundation and significantly improved bearing capacity.
CONSTRUCTION METHOD OF STATIC PRESSING AND POST-GROUTING FOR SMALL-DIAMETER MINI-SIZED STEEL PIPE PILE
ZONG ZHONGLING (author) / ZHAO CHENGKUN (author) / CAO BO (author) / ZHUANG XIAOXUAN (author) / LI KEKE (author) / LI MENG (author) / GU JING (author) / LV FENGWEI (author) / WU JIANGCHUAN (author) / HUANG YUNHAN (author)
2021-03-25
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
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