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A platform for research: civil engineering, architecture and urbanism
Expanded-head anchor cable construction method for expansive soil area
The invention belongs to the technical field of anchor cables, discloses an expanded-head anchor cable construction method for an expansive soil area, and aims to solve the problem that the anchoring force of an anchor cable is reduced due to the fact that the rainwater mechanical property of expansive soil is reduced. The method comprises the following steps: (1) determining the position of each anchor cable; (2) drilling a formed hole to a set elevation; (3) a rotary spraying head of a high-pressure rotary spraying machine is placed at the upper end of the expanded head section, and the high-pressure rotary spraying head conducts chambering through tap water; (4) a rotary spraying head of a high-pressure rotary spraying machine is placed at the bottom of the anchor hole, and chambering is conducted through cement paste; (5) cleaning the hole and placing an anchor cable; and (6) grouting, tensioning and locking to finish the construction of the expanded-head anchor cable. The problem that the anchoring force is reduced due to mechanical property reduction caused by swelling and softening of swelling soil after rainwater is avoided.
本发明属于锚索技术领域，公开了一种用于膨胀土地区的扩大头锚索施工方法，为了解决膨胀土雨水力学性能下降而导致锚索锚固力降低的问题。本发明包括：（1）确定各个锚索的位置;（2）钻进成孔至设定标高；（3）将高压旋喷机的旋喷头放置在扩大头段的上端，高压旋喷头利用自来水进行扩孔；（4）将高压旋喷机的旋喷头放置在锚孔的底部并利用水泥浆进行扩孔；（5）清孔和放入锚索；（6）注浆、张拉和锁定完成扩大头锚索施工。本发明避免了膨胀土雨水后膨胀、变软引起力学性能下降而导致的锚固力降低的问题。
Expanded-head anchor cable construction method for expansive soil area
The invention belongs to the technical field of anchor cables, discloses an expanded-head anchor cable construction method for an expansive soil area, and aims to solve the problem that the anchoring force of an anchor cable is reduced due to the fact that the rainwater mechanical property of expansive soil is reduced. The method comprises the following steps: (1) determining the position of each anchor cable; (2) drilling a formed hole to a set elevation; (3) a rotary spraying head of a high-pressure rotary spraying machine is placed at the upper end of the expanded head section, and the high-pressure rotary spraying head conducts chambering through tap water; (4) a rotary spraying head of a high-pressure rotary spraying machine is placed at the bottom of the anchor hole, and chambering is conducted through cement paste; (5) cleaning the hole and placing an anchor cable; and (6) grouting, tensioning and locking to finish the construction of the expanded-head anchor cable. The problem that the anchoring force is reduced due to mechanical property reduction caused by swelling and softening of swelling soil after rainwater is avoided.
本发明属于锚索技术领域，公开了一种用于膨胀土地区的扩大头锚索施工方法，为了解决膨胀土雨水力学性能下降而导致锚索锚固力降低的问题。本发明包括：（1）确定各个锚索的位置;（2）钻进成孔至设定标高；（3）将高压旋喷机的旋喷头放置在扩大头段的上端，高压旋喷头利用自来水进行扩孔；（4）将高压旋喷机的旋喷头放置在锚孔的底部并利用水泥浆进行扩孔；（5）清孔和放入锚索；（6）注浆、张拉和锁定完成扩大头锚索施工。本发明避免了膨胀土雨水后膨胀、变软引起力学性能下降而导致的锚固力降低的问题。
Expanded-head anchor cable construction method for expansive soil area
一种用于膨胀土地区的扩大头锚索施工方法
ZHAO DUOYIN (author) / XU JIZHONG (author) / KE LING (author) / PENG SHUANGQI (author)
2022-04-12
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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