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Foundation bolt construction method

Update:20-03-2020
Summary:

1. One-time embedding method: When pouring concrete, em […]

1. One-time embedding method: When pouring concrete, embed the anchor bolts. When high towers are controlled by overturning, one-time embedding method should be used;
2. Hole-preserving method: The equipment is in place, the holes are cleaned, the anchor bolts are placed in the holes, and the equipment is positioned and aligned, and then poured with a grade of non-shrinking fine stone concrete higher than the original foundation, and compacted and compact The distance from the center of the anchor bolt to the edge of the foundation should not be less than 4d (d is the diameter of the anchor bolt), and it should not be less than 150mm (when d≤20, it should not be less than 100mm). Add 50mm to the half. When the above requirements cannot be met, appropriate measures should be taken to strengthen it. The diameter of the anchor bolts for the structure should not be less than 20mm. When subjected to earthquakes, it should be fixed with double nuts or other effective measures to prevent loosening. , But the anchorage length of the anchor bolt should be 5d longer than that of the non-seismic anchorage.

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