1. One-time embedding method: When pouring concrete, em […]
1. One-time embedding method: When pouring concrete, embed the anchor bolts. When the tower is controlled by the overturning, the anchor bolt should adopt the one-time embedding method.
2. Reserved hole method: the equipment is in place, the hole is cleaned, the anchor bolt is placed in the hole, and the equipment is positioned and corrected, and then the non-shrinking fine stone concrete higher than the original foundation is used for watering, tamping and compacting. . The distance from the center of the anchor bolt to the edge of the foundation shall not be less than 2d (d is the diameter of the anchor bolt), and shall not be less than 15mm (not less than 10mm when d≤20), not less than half of the width of the anchor plate. Add 50mm. When the above requirements are not met, appropriate measures should be taken to strengthen them. The diameter of the anchor bolts used for the structure should not be less than 20mm. When subjected to earthquakes, double nuts should be used, or other measures to prevent loosening should be used, but the anchor bolts should be anchored for 5 days longer than the non-seismic anchor lengths.
Installation of the anchor bolts The loosening of the anchor bolts in the foundation may loosen the bolts when the anchor bolts are tightened. In this case, the bolts should be adjusted to the original position and the foundation around the bolts should be scooped out enough. Then, the two U-shaped steel bars are welded vertically and horizontally on the bolts. Finally, the pits are cleaned and grouted with water, and the concrete is solidified to the design strength, and then the handle of the live-foot bolts is tightened to handle the deviation of the live-foot bolts. The bolts are the same, except that the anchor bolts can be pulled out. If the bolt is too long, a piece of thread can be cut on the machine tool; if the bolt is too short, it can be extended by hot forging; if the position is not consistent, it can be corrected by bending method.