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A platform for research: civil engineering, architecture and urbanism
One-way valve for long spiral drilling press-grouting concrete post-grouting pile
The invention provides a one-way valve for a long spiral drilling press-grouting concrete post-grouting pile, and belongs to the technical field of one-way valves for post-grouting concrete piles. The bottom end of a steel grouting guide pipe is a sealed bottom end, a protective cover is arranged on the lower portion of the steel grouting guide pipe, grouting holes are uniformly distributed in the curved surface of the steel grouting guide pipe in the protective cover, a first adhesive tape is arranged on the surface of the steel grouting guide pipe with the grouting holes, drawing pins are arranged on the first adhesive tape at the grouting holes, and a second adhesive tape is arranged on the steel grouting guide pipe outside the drawing pins. The one-way valve can be used for the long spiral drilling press-grouting concrete pile, a dry operation pore-forming concrete grouting pile and a slurry wall-protecting pore-forming concrete grouting pile. As the protective cover is arranged, a wrapping material layer of the one-way valve can be prevented from being damaged when the grouting guide pipe is lowered, and the one-way valve has friction resistance, collision resistance and impact resistance which are not possessed by other pile type one-way valves. The one-way valve meets the requirements of JGJ94-2008 'Technical Specifications for Building Pile Foundation' for post-grouting side resistance enhancement coefficient beta si and end resistance enhancement coefficient beta p in Table 5.3.10.
一种长螺旋钻孔压灌混凝土后注浆桩单向阀，属于混凝土灌注后注浆桩单向阀技术领域。本发明钢制注浆导管的底端为封死的底端，钢制注浆导管的下部设有防护罩，防护罩防护内的钢制注浆导管的曲面上均布有注浆孔，具有注浆孔的钢制注浆导管的表面上设有胶带一，图钉设置在注浆孔处的胶带一上，图钉外部的钢制注浆导管上设有胶带二。本发明可用于长螺旋钻孔混凝土压灌桩、干作业成孔混凝土灌注桩和泥浆护壁成孔混凝土灌注桩。由于设置防护罩能防止下注浆导管时损坏单向阀的包裹物质层，使单向阀具有抗磨擦、抗碰撞、抗冲击性能。这是其它桩型单向阀不具有的。符合JGJ94‑2008《建筑桩基技术规范》表5.3.10后注浆侧阻力增强系数βsi，端阻力增强系数βp取值。
One-way valve for long spiral drilling press-grouting concrete post-grouting pile
The invention provides a one-way valve for a long spiral drilling press-grouting concrete post-grouting pile, and belongs to the technical field of one-way valves for post-grouting concrete piles. The bottom end of a steel grouting guide pipe is a sealed bottom end, a protective cover is arranged on the lower portion of the steel grouting guide pipe, grouting holes are uniformly distributed in the curved surface of the steel grouting guide pipe in the protective cover, a first adhesive tape is arranged on the surface of the steel grouting guide pipe with the grouting holes, drawing pins are arranged on the first adhesive tape at the grouting holes, and a second adhesive tape is arranged on the steel grouting guide pipe outside the drawing pins. The one-way valve can be used for the long spiral drilling press-grouting concrete pile, a dry operation pore-forming concrete grouting pile and a slurry wall-protecting pore-forming concrete grouting pile. As the protective cover is arranged, a wrapping material layer of the one-way valve can be prevented from being damaged when the grouting guide pipe is lowered, and the one-way valve has friction resistance, collision resistance and impact resistance which are not possessed by other pile type one-way valves. The one-way valve meets the requirements of JGJ94-2008 'Technical Specifications for Building Pile Foundation' for post-grouting side resistance enhancement coefficient beta si and end resistance enhancement coefficient beta p in Table 5.3.10.
一种长螺旋钻孔压灌混凝土后注浆桩单向阀，属于混凝土灌注后注浆桩单向阀技术领域。本发明钢制注浆导管的底端为封死的底端，钢制注浆导管的下部设有防护罩，防护罩防护内的钢制注浆导管的曲面上均布有注浆孔，具有注浆孔的钢制注浆导管的表面上设有胶带一，图钉设置在注浆孔处的胶带一上，图钉外部的钢制注浆导管上设有胶带二。本发明可用于长螺旋钻孔混凝土压灌桩、干作业成孔混凝土灌注桩和泥浆护壁成孔混凝土灌注桩。由于设置防护罩能防止下注浆导管时损坏单向阀的包裹物质层，使单向阀具有抗磨擦、抗碰撞、抗冲击性能。这是其它桩型单向阀不具有的。符合JGJ94‑2008《建筑桩基技术规范》表5.3.10后注浆侧阻力增强系数βsi，端阻力增强系数βp取值。
One-way valve for long spiral drilling press-grouting concrete post-grouting pile
长螺旋钻孔压灌混凝土后注浆桩单向阀
ZHAI YUFEI (author) / ZHU ZE (author) / ZHAI YUSI (author) / ZHAI YUQIAO (author) / ZHAI YUHONG (author) / ZHAI XIANGYANG (author) / ZHAI XIANGBIN (author)
2021-12-21
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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