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A platform for research: civil engineering, architecture and urbanism
Non-soil-squeezing drilling multi-point bearing expanded-head steel pipe pile and construction technology thereof
The invention discloses a non-soil-squeezing drilling multipoint bearing expanded-head steel pipe pile and a construction technology thereof, the steel pipe pile comprises a steel pipe pile body, a plurality of spiral blades with the same rotation direction are arranged on the outer wall of the lower section of the steel pipe pile body, and the outer diameter of the spiral blade at the lowest end is larger than that of other spiral blades; inner spiral blades are arranged on the inner wall of the steel pipe pile body in a protruding mode, the spiral direction of the inner spiral blades is consistent with that of the spiral blades, and the lower end faces of the inner spiral blades are lower than that of the steel pipe pile body. And cutting teeth are distributed on the inner spiral blades. During construction, the steel pipe pile body is prefabricated firstly, then surveying and setting out are conducted, piling point positions are positioned, the hydraulic spiral drilling machine is installed and the like, the steel pipe pile is driven by the hydraulic spiral drilling machine to rotatably drill into soil, and construction of the steel pipe pile is finished after a preset stratum is reached. The method has the advantages of being fast in construction, high in bearing capacity, small in pollution and low in cost, and can be widely applied to various fields such as foundation foundations and foundation pit supporting.
本发明公开了一种非挤土钻进的多点承载扩大头钢管桩及其施工工艺，该钢管桩包括钢管桩本体，所述钢管桩本体下段外壁上设置有若干旋向相同的螺旋叶片，且最下端的螺旋叶片外径大于其它螺旋叶片外径；所述钢管桩本体内壁凸设有内螺旋刀翼，其螺旋方向与螺旋叶片的螺旋方向一致，且其下端面低于钢管桩本体下端面；所述内螺旋刀翼上布设有切削齿。施工时，先预制钢管桩本体，然后测量放线，定位打桩点位，安装液压螺旋钻机等，通过液压螺旋钻机驱动钢管桩旋转钻入土壤，达到预定地层后结束该根钢管桩施工。本发明具有施工快、承载高、污染小、成本低，可广泛应用于地基基础、基坑支护等诸多领域。
Non-soil-squeezing drilling multi-point bearing expanded-head steel pipe pile and construction technology thereof
The invention discloses a non-soil-squeezing drilling multipoint bearing expanded-head steel pipe pile and a construction technology thereof, the steel pipe pile comprises a steel pipe pile body, a plurality of spiral blades with the same rotation direction are arranged on the outer wall of the lower section of the steel pipe pile body, and the outer diameter of the spiral blade at the lowest end is larger than that of other spiral blades; inner spiral blades are arranged on the inner wall of the steel pipe pile body in a protruding mode, the spiral direction of the inner spiral blades is consistent with that of the spiral blades, and the lower end faces of the inner spiral blades are lower than that of the steel pipe pile body. And cutting teeth are distributed on the inner spiral blades. During construction, the steel pipe pile body is prefabricated firstly, then surveying and setting out are conducted, piling point positions are positioned, the hydraulic spiral drilling machine is installed and the like, the steel pipe pile is driven by the hydraulic spiral drilling machine to rotatably drill into soil, and construction of the steel pipe pile is finished after a preset stratum is reached. The method has the advantages of being fast in construction, high in bearing capacity, small in pollution and low in cost, and can be widely applied to various fields such as foundation foundations and foundation pit supporting.
本发明公开了一种非挤土钻进的多点承载扩大头钢管桩及其施工工艺，该钢管桩包括钢管桩本体，所述钢管桩本体下段外壁上设置有若干旋向相同的螺旋叶片，且最下端的螺旋叶片外径大于其它螺旋叶片外径；所述钢管桩本体内壁凸设有内螺旋刀翼，其螺旋方向与螺旋叶片的螺旋方向一致，且其下端面低于钢管桩本体下端面；所述内螺旋刀翼上布设有切削齿。施工时，先预制钢管桩本体，然后测量放线，定位打桩点位，安装液压螺旋钻机等，通过液压螺旋钻机驱动钢管桩旋转钻入土壤，达到预定地层后结束该根钢管桩施工。本发明具有施工快、承载高、污染小、成本低，可广泛应用于地基基础、基坑支护等诸多领域。
Non-soil-squeezing drilling multi-point bearing expanded-head steel pipe pile and construction technology thereof
一种非挤土钻进的多点承载扩大头钢管桩及其施工工艺
CHENG YUEHONG (author) / WANG LIANG (author) / CHEN XIAOLEI (author) / LI CUI (author) / ZHUANG JINGJING (author)
2024-05-10
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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