Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-deformation construction method for deep foundation pit of open cut tunnel
The invention discloses an anti-deformation construction method for a deep foundation pit of an open cut tunnel. The anti-deformation construction method comprises the steps that feeding equipment is controlled to insert an anchor rod into positioning type drilling and grouting equipment; the positioning type drilling and grouting equipment is controlled to drill holes in the peripheral wall of the foundation pit, and the anchor rods are fed into the drill holes; after drilling is in place, the positioning type drilling and grouting equipment gradually retreats from the drill hole, and meanwhile concrete is injected into the drill hole through the positioning type drilling and grouting equipment till the drill hole is full of the concrete; and replacing another position, repeating the steps, and completing drilling, anchor rod mounting and concrete pouring operation at multiple positions. After 2.5-4 days, the concrete in each drilled hole is solidified, and an anchoring pile is formed; the locking nut at the outer end of each anchor rod is screwed, and the anchor rods are tensioned on the outer supporting body. The construction efficiency is improved, the strength of the anchoring piles is improved, the service life of the anchoring piles is prolonged, and it is ensured that the outer supporting bodies pulled by the anchoring piles are stably arranged on the corresponding peripheral walls of the foundation pit. The method is suitable for the technical field of deformation prevention of the open-cut tunnel deep foundation pit.
本发明公开了一种明挖隧道深基坑防变形施工方法，控制送料设备将锚杆插入定位式钻孔注浆设备内；控制定位式钻孔注浆设备对基坑周壁进行打孔，并将锚杆送入钻孔；钻进到位后，定位式钻孔注浆设备逐渐退出钻孔，同时将混凝土通过定位式钻孔注浆设备注入到钻孔内，直至混凝土注满钻孔；更换另一位置，重复上述步骤，如此反复，完成多个位置的钻孔、锚杆安装及混凝土浇筑作业；经过2.5‑4天，每个钻孔内的混凝土凝固并形成锚固桩；旋紧每个锚杆外端上的锁紧螺母，锚杆拉紧在外支撑体上。本发明提高施工效率，提升锚固桩的强度及使用寿命，确保锚固桩所牵拉的外支撑体稳固地要在所对应的基坑周壁上。本发明适用于明挖隧道深基坑防变形的技术领域。
Anti-deformation construction method for deep foundation pit of open cut tunnel
The invention discloses an anti-deformation construction method for a deep foundation pit of an open cut tunnel. The anti-deformation construction method comprises the steps that feeding equipment is controlled to insert an anchor rod into positioning type drilling and grouting equipment; the positioning type drilling and grouting equipment is controlled to drill holes in the peripheral wall of the foundation pit, and the anchor rods are fed into the drill holes; after drilling is in place, the positioning type drilling and grouting equipment gradually retreats from the drill hole, and meanwhile concrete is injected into the drill hole through the positioning type drilling and grouting equipment till the drill hole is full of the concrete; and replacing another position, repeating the steps, and completing drilling, anchor rod mounting and concrete pouring operation at multiple positions. After 2.5-4 days, the concrete in each drilled hole is solidified, and an anchoring pile is formed; the locking nut at the outer end of each anchor rod is screwed, and the anchor rods are tensioned on the outer supporting body. The construction efficiency is improved, the strength of the anchoring piles is improved, the service life of the anchoring piles is prolonged, and it is ensured that the outer supporting bodies pulled by the anchoring piles are stably arranged on the corresponding peripheral walls of the foundation pit. The method is suitable for the technical field of deformation prevention of the open-cut tunnel deep foundation pit.
本发明公开了一种明挖隧道深基坑防变形施工方法，控制送料设备将锚杆插入定位式钻孔注浆设备内；控制定位式钻孔注浆设备对基坑周壁进行打孔，并将锚杆送入钻孔；钻进到位后，定位式钻孔注浆设备逐渐退出钻孔，同时将混凝土通过定位式钻孔注浆设备注入到钻孔内，直至混凝土注满钻孔；更换另一位置，重复上述步骤，如此反复，完成多个位置的钻孔、锚杆安装及混凝土浇筑作业；经过2.5‑4天，每个钻孔内的混凝土凝固并形成锚固桩；旋紧每个锚杆外端上的锁紧螺母，锚杆拉紧在外支撑体上。本发明提高施工效率，提升锚固桩的强度及使用寿命，确保锚固桩所牵拉的外支撑体稳固地要在所对应的基坑周壁上。本发明适用于明挖隧道深基坑防变形的技术领域。
Anti-deformation construction method for deep foundation pit of open cut tunnel
一种明挖隧道深基坑防变形施工方法
HOU YIHUI (Autor:in) / WANG LIANG (Autor:in) / LIU LEI (Autor:in) / ZHOU XINGYU (Autor:in) / LI DONG (Autor:in) / ZHU GUANGHUI (Autor:in) / WEI ZHONGCHENG (Autor:in) / CHEN DAILI (Autor:in)
18.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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