A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Telescopic steel screw pile and construction method
The invention provides a telescopic steel screw pile and a construction method. The steel spiral pile comprises a steel pipe pile, an inner shaft steel pipe and a telescopic spiral steel sheet. The inner shaft steel pipe is located in the steel pipe pile, and the spiral steel sheet is hinged to the outer side face of the inner shaft steel pipe. A spiral guide hole is formed in the pipe wall of the steel pipe pile, and before the inner shaft steel pipe is lifted, the spiral steel sheet is stored in the steel pipe pile in a folding mode; in the lifting process of the inner shaft steel pipe, the spiral steel sheets extend outwards and protrude out of the outer side face of the steel pipe pile. Compared with a traditional spiral pile hammering or spiral entering soil layer, the pile body soil entering resistance is greatly reduced, the pile soil entering speed can be greatly increased, waste soil is not generated in the construction process, and the construction cost is reduced. A traditional spiral pile is hammered into soil or spirally descends into soil, soil around the pile is continuously cut, disturbance is large, and the original state and mechanical performance of the soil around the pile are damaged. The spiral pile spirally enters the soil by a circle and then is grouted and fixed, the influence on the soil around the pile is small, and the performance of the soil around the pile is well reserved and maintained.
本发明提供了一种可伸缩的钢制螺旋桩及施工方法。钢制螺旋桩包括钢管桩、内轴钢管和可伸缩的螺旋钢片。内轴钢管位于钢管桩内，螺旋钢片铰接于内轴钢管的外侧面上；钢管桩的管壁上设有螺旋状导向孔，内轴钢管提升前，螺旋钢片以折叠方式收纳于钢管桩内；内轴钢管提升过程中，螺旋钢片向外侧伸展凸伸出钢管桩的外侧面。与传统螺旋桩锤击或螺旋进入土层相比，本发明桩体入土阻力大大减小，可大幅提高桩入土速度，施工过程不产生废弃土，降低施工费用。传统螺旋桩锤击入土或螺旋下降入土，对桩周土体不断切割、扰动较大，破坏了桩周土原有的状态和力学性能，本发明螺旋进入土中一圈后注浆固定，对桩周土影响较小，桩周土自身性能得到较好保留和保持。
Telescopic steel screw pile and construction method
The invention provides a telescopic steel screw pile and a construction method. The steel spiral pile comprises a steel pipe pile, an inner shaft steel pipe and a telescopic spiral steel sheet. The inner shaft steel pipe is located in the steel pipe pile, and the spiral steel sheet is hinged to the outer side face of the inner shaft steel pipe. A spiral guide hole is formed in the pipe wall of the steel pipe pile, and before the inner shaft steel pipe is lifted, the spiral steel sheet is stored in the steel pipe pile in a folding mode; in the lifting process of the inner shaft steel pipe, the spiral steel sheets extend outwards and protrude out of the outer side face of the steel pipe pile. Compared with a traditional spiral pile hammering or spiral entering soil layer, the pile body soil entering resistance is greatly reduced, the pile soil entering speed can be greatly increased, waste soil is not generated in the construction process, and the construction cost is reduced. A traditional spiral pile is hammered into soil or spirally descends into soil, soil around the pile is continuously cut, disturbance is large, and the original state and mechanical performance of the soil around the pile are damaged. The spiral pile spirally enters the soil by a circle and then is grouted and fixed, the influence on the soil around the pile is small, and the performance of the soil around the pile is well reserved and maintained.
本发明提供了一种可伸缩的钢制螺旋桩及施工方法。钢制螺旋桩包括钢管桩、内轴钢管和可伸缩的螺旋钢片。内轴钢管位于钢管桩内，螺旋钢片铰接于内轴钢管的外侧面上；钢管桩的管壁上设有螺旋状导向孔，内轴钢管提升前，螺旋钢片以折叠方式收纳于钢管桩内；内轴钢管提升过程中，螺旋钢片向外侧伸展凸伸出钢管桩的外侧面。与传统螺旋桩锤击或螺旋进入土层相比，本发明桩体入土阻力大大减小，可大幅提高桩入土速度，施工过程不产生废弃土，降低施工费用。传统螺旋桩锤击入土或螺旋下降入土，对桩周土体不断切割、扰动较大，破坏了桩周土原有的状态和力学性能，本发明螺旋进入土中一圈后注浆固定，对桩周土影响较小，桩周土自身性能得到较好保留和保持。
Telescopic steel screw pile and construction method
一种可伸缩的钢制螺旋桩及施工方法
DING PENG (author) / GUO HAISHAN (author) / LIU ZHIGUO (author) / SHEN GUANGMING (author) / LI MENGLIN (author) / JIAO ZHICHAO (author) / ZHOU RAN (author) / MAO HUI (author) / TIAN HAITAO (author) / ZHANG MENGMENG (author)
2023-01-17
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen