A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Prestressed expanded-head anti-floating anchor rod and construction method
The invention belongs to the technical field of rock-soil anchoring, and relates to a prestressed expanded-head anti-floating anchor rod and a construction method.The variable-diameter reinforcement cage is installed on the anchoring section of an anchor rod body, the outer side of the free section of the anchor rod body is sleeved with an anti-corrosion lantern ring, an anchor rod centering device is arranged on the free section of the anchor rod body, and the upper portion of the anchor rod body is sleeved with a second steel sleeve; the bottom of the second steel sleeve is connected with the top of the anti-corrosion lantern ring, and the top of the second steel sleeve is aligned with the bottom face of the anchor pit in parallel and connected with a stress diffusion anchor disc which is fixed through a fastening nut. The anchor rod impermeable layer is arranged between the building foundation bottom plate and the foundation waterproof layer, and the grouting pipe is arranged on one side of the anchor rod body; when the variable-diameter reinforcement cage is unfolded, the contact area of the anchor rod body and an anchoring body can be increased, bonding of the anchor rod body and the anchoring body is enhanced, the uplift bearing capacity of the anchor rod is improved, cracking of anchoring section concrete is effectively controlled, and the integrity of the anchor rod is enhanced. The variable-diameter reinforcement cage is opened by means of grouting pressure and the gravity of the device, and construction is simple and fast.
本发明属于岩土锚固技术领域，涉及一种预应力扩大头抗浮锚杆及施工方法，锚杆杆体的锚固段安装有可变直径钢筋笼，锚杆杆体的自由段外侧套有防腐套环，锚杆对中器布设在锚杆杆体的自由段，锚杆杆体的上部套有第二钢套筒，第二钢套筒的底部与防腐套环的顶部连接，顶部与锚坑底面平行对齐并与应力扩散锚盘连接，应力扩散锚盘通过紧固螺母固定；锚杆防渗层设置在建筑基础底板与基础防水层之间，注浆管设置在锚杆杆体的一侧；可变直径钢筋笼展开时可增大锚杆杆体与锚固体接触面积，加强锚杆杆体与锚固体粘结，提高锚杆的抗拔承载力，有效控制锚固段混凝土的开裂，增强锚杆的整体性；可变直径钢筋笼依靠注浆压力及装置自身重力打开，施工简单快捷。
Prestressed expanded-head anti-floating anchor rod and construction method
The invention belongs to the technical field of rock-soil anchoring, and relates to a prestressed expanded-head anti-floating anchor rod and a construction method.The variable-diameter reinforcement cage is installed on the anchoring section of an anchor rod body, the outer side of the free section of the anchor rod body is sleeved with an anti-corrosion lantern ring, an anchor rod centering device is arranged on the free section of the anchor rod body, and the upper portion of the anchor rod body is sleeved with a second steel sleeve; the bottom of the second steel sleeve is connected with the top of the anti-corrosion lantern ring, and the top of the second steel sleeve is aligned with the bottom face of the anchor pit in parallel and connected with a stress diffusion anchor disc which is fixed through a fastening nut. The anchor rod impermeable layer is arranged between the building foundation bottom plate and the foundation waterproof layer, and the grouting pipe is arranged on one side of the anchor rod body; when the variable-diameter reinforcement cage is unfolded, the contact area of the anchor rod body and an anchoring body can be increased, bonding of the anchor rod body and the anchoring body is enhanced, the uplift bearing capacity of the anchor rod is improved, cracking of anchoring section concrete is effectively controlled, and the integrity of the anchor rod is enhanced. The variable-diameter reinforcement cage is opened by means of grouting pressure and the gravity of the device, and construction is simple and fast.
本发明属于岩土锚固技术领域，涉及一种预应力扩大头抗浮锚杆及施工方法，锚杆杆体的锚固段安装有可变直径钢筋笼，锚杆杆体的自由段外侧套有防腐套环，锚杆对中器布设在锚杆杆体的自由段，锚杆杆体的上部套有第二钢套筒，第二钢套筒的底部与防腐套环的顶部连接，顶部与锚坑底面平行对齐并与应力扩散锚盘连接，应力扩散锚盘通过紧固螺母固定；锚杆防渗层设置在建筑基础底板与基础防水层之间，注浆管设置在锚杆杆体的一侧；可变直径钢筋笼展开时可增大锚杆杆体与锚固体接触面积，加强锚杆杆体与锚固体粘结，提高锚杆的抗拔承载力，有效控制锚固段混凝土的开裂，增强锚杆的整体性；可变直径钢筋笼依靠注浆压力及装置自身重力打开，施工简单快捷。
Prestressed expanded-head anti-floating anchor rod and construction method
一种预应力扩大头抗浮锚杆及施工方法
BAI XIAOYU (author) / YAN NAN (author) / SUN GAN (author) / ZHANG MINGYI (author) / SUN JIANWEN (author) / ZHANG CHANGTAI (author) / YU LONGTAO (author) / FANG XIANG (author) / HE LAISHENG (author) / ZHANG SHENGKAI (author)
2022-05-31
Patent
Electronic Resource
Chinese
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