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Construction method of drop-shaped expanded-head anti-floating anchor rod based on PSB finish rolling deformed steel bar
The invention belongs to the technical field of anti-floating anchor rods, and discloses a construction method of a drop-shaped expanded-head anti-floating anchor rod based on a PSB finish rolling deformed steel bar, which aims to solve the problem that an anchoring body at a large-section step of an expanded head of an existing anti-floating anchor rod is easy to shear and crack. The drop-shaped expanded-head anti-floating anchor rod based on the PSB finish rolling deformed steel bar comprises an anchor hole, wherein the anchor hole is formed in a soil body or a rock body, the PSB finish rolling deformed steel bar sleeves the interior of the anchor hole, an anchoring body is formed between the anchor hole and the PSB finish rolling deformed steel bar in a pouring mode, the anchor hole comprises a non-expanded-head section, a drop-shaped expanded-head section and an equal-diameter expanded-head section which sequentially communicate with one another from top to bottom, and the diameter of the non-expanded-head section of the anchor hole is gradually and smoothly expanded to the diameter of the equal-diameter expanded-head section through the drop-shaped expanded-head section. According to the construction method, the drop-shaped expanded-head section is designed, so that the anchoring body cannot form a step surface, the shear stress borne by the anchoring body is reduced, the generation of cracks of the anchoring body is controlled, the PSB finish rolling deformed steel bar is prevented from being corroded, and the purpose of prolonging the service life of the anti-floating anchor rod is achieved.
本发明属于抗浮锚杆技术领域，公开了一种基于PSB精轧螺纹钢的水滴形扩大头抗浮锚杆的施工方法，为了解决现有抗浮锚杆的扩头大段台阶处的锚固体容易受剪开裂的问题。本发明包括开设在土体或者岩体中的锚孔，所述锚孔中套设有PSB精轧螺纹钢，锚孔与PSB精轧螺纹钢之间浇筑形成有锚固体，所述锚孔从上至下包括依次连通的非扩大头段、水滴形扩大头段和等直径扩大头段，所述水滴形扩大头段使得锚孔的非扩大头段的直径逐渐平滑扩大到与等直径扩大头段的直径。本发明通过水滴型扩头段的设计从而使得锚固体不会形成台阶面，从而使得锚固体受的的剪应力减小，从而达到控制锚固体裂缝的产生，进而避免PSB精轧螺纹钢腐蚀，从而达到提高抗浮锚杆使用寿命的目的。
Construction method of drop-shaped expanded-head anti-floating anchor rod based on PSB finish rolling deformed steel bar
The invention belongs to the technical field of anti-floating anchor rods, and discloses a construction method of a drop-shaped expanded-head anti-floating anchor rod based on a PSB finish rolling deformed steel bar, which aims to solve the problem that an anchoring body at a large-section step of an expanded head of an existing anti-floating anchor rod is easy to shear and crack. The drop-shaped expanded-head anti-floating anchor rod based on the PSB finish rolling deformed steel bar comprises an anchor hole, wherein the anchor hole is formed in a soil body or a rock body, the PSB finish rolling deformed steel bar sleeves the interior of the anchor hole, an anchoring body is formed between the anchor hole and the PSB finish rolling deformed steel bar in a pouring mode, the anchor hole comprises a non-expanded-head section, a drop-shaped expanded-head section and an equal-diameter expanded-head section which sequentially communicate with one another from top to bottom, and the diameter of the non-expanded-head section of the anchor hole is gradually and smoothly expanded to the diameter of the equal-diameter expanded-head section through the drop-shaped expanded-head section. According to the construction method, the drop-shaped expanded-head section is designed, so that the anchoring body cannot form a step surface, the shear stress borne by the anchoring body is reduced, the generation of cracks of the anchoring body is controlled, the PSB finish rolling deformed steel bar is prevented from being corroded, and the purpose of prolonging the service life of the anti-floating anchor rod is achieved.
本发明属于抗浮锚杆技术领域，公开了一种基于PSB精轧螺纹钢的水滴形扩大头抗浮锚杆的施工方法，为了解决现有抗浮锚杆的扩头大段台阶处的锚固体容易受剪开裂的问题。本发明包括开设在土体或者岩体中的锚孔，所述锚孔中套设有PSB精轧螺纹钢，锚孔与PSB精轧螺纹钢之间浇筑形成有锚固体，所述锚孔从上至下包括依次连通的非扩大头段、水滴形扩大头段和等直径扩大头段，所述水滴形扩大头段使得锚孔的非扩大头段的直径逐渐平滑扩大到与等直径扩大头段的直径。本发明通过水滴型扩头段的设计从而使得锚固体不会形成台阶面，从而使得锚固体受的的剪应力减小，从而达到控制锚固体裂缝的产生，进而避免PSB精轧螺纹钢腐蚀，从而达到提高抗浮锚杆使用寿命的目的。
Construction method of drop-shaped expanded-head anti-floating anchor rod based on PSB finish rolling deformed steel bar
基于PSB精轧螺纹钢的水滴形扩大头抗浮锚杆的施工方法
GAO XIAOFENG (author) / HOU HUIJUN (author) / LUO DONGLIN (author) / ZHANG WENPENG (author) / LI NA (author) / QIN DONGLIN (author)
2021-11-19
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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