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A platform for research: civil engineering, architecture and urbanism
Construction method of high-pressure jet grouting expanded-head anti-floating anchor rod
The invention relates to the technical field of constructional engineering, in particular to a high-pressure jet grouting expanded-head anti-floating anchor rod construction method which comprises the construction steps of pile position arrangement, drilling, reaming, anchor rod installation, grouting, structural bottom plate forming and the like. According to the construction method, the anti-floating anchor rods are made of SPB1080-grade high-strength steel bars, and the single anchor bearing capacity is high; a high-pressure jet grouting nozzle is adopted to conduct reaming operation on the lower portion of a formed hole, so that after the anchor rod is installed and grouted, a high-pressure jet grouting expanded head is formed at the bottom of the anchor rod, the anchoring force of the bottom of the anchor rod is high, and the anti-floating effect of the anchor rod is improved; and the top of the anti-floating anchor rod is rigidly connected with the structural bottom plate, so that the problem that the anchor rod is easy to leak at the position of the structural bottom plate is solved.
本发明涉及建筑工程技术领域，尤其涉及一种高压旋喷扩大头抗浮锚杆施工方法，包括：布置桩位、钻孔、扩孔、锚杆安装、注浆、形成结构底板等施工步骤；该施工方法中抗浮锚杆采用SPB1080级高强钢筋，单锚承载力强；通过采用高压旋喷喷头对成孔的下部进行扩孔操作，以在锚杆安装并注浆后，于锚杆底部形成高压旋喷扩大头，从而使得锚杆底部锚固力强，进而提高了锚杆的抗浮效果；通过设置抗浮锚杆顶部与结构底板刚性连接，解决了锚杆在结构底板位置易渗漏的难题。
Construction method of high-pressure jet grouting expanded-head anti-floating anchor rod
The invention relates to the technical field of constructional engineering, in particular to a high-pressure jet grouting expanded-head anti-floating anchor rod construction method which comprises the construction steps of pile position arrangement, drilling, reaming, anchor rod installation, grouting, structural bottom plate forming and the like. According to the construction method, the anti-floating anchor rods are made of SPB1080-grade high-strength steel bars, and the single anchor bearing capacity is high; a high-pressure jet grouting nozzle is adopted to conduct reaming operation on the lower portion of a formed hole, so that after the anchor rod is installed and grouted, a high-pressure jet grouting expanded head is formed at the bottom of the anchor rod, the anchoring force of the bottom of the anchor rod is high, and the anti-floating effect of the anchor rod is improved; and the top of the anti-floating anchor rod is rigidly connected with the structural bottom plate, so that the problem that the anchor rod is easy to leak at the position of the structural bottom plate is solved.
本发明涉及建筑工程技术领域，尤其涉及一种高压旋喷扩大头抗浮锚杆施工方法，包括：布置桩位、钻孔、扩孔、锚杆安装、注浆、形成结构底板等施工步骤；该施工方法中抗浮锚杆采用SPB1080级高强钢筋，单锚承载力强；通过采用高压旋喷喷头对成孔的下部进行扩孔操作，以在锚杆安装并注浆后，于锚杆底部形成高压旋喷扩大头，从而使得锚杆底部锚固力强，进而提高了锚杆的抗浮效果；通过设置抗浮锚杆顶部与结构底板刚性连接，解决了锚杆在结构底板位置易渗漏的难题。
Construction method of high-pressure jet grouting expanded-head anti-floating anchor rod
一种高压旋喷扩大头抗浮锚杆施工方法
YAO FENGJIE (author) / KAN HONGTAO (author) / HOU XIANWEI (author) / WANG QINGZHU (author)
2023-03-07
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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