Bollard Embedding Form

Stake the stake according to the center of the pile position, and draw a circular arc with lime, and then manually dig a hole or an excavator to dig a hole, put in the steel casing, and press the measured cross pile pull line, so that the center point of the casing is the same as the measured and calibrated pile position. The center points are coincident, and the verticality and horizontal position of the casing should be corrected with a line hammer. The inclination rate should not be greater than 1%, and the deviation should not be greater than 50ram. When burying the casing, the surrounding areas should be backfilled with high-quality clay, and compacted symmetrically in layers. The inner diameter of the casing should be backfilled. It should be 20-40cm larger than the pile diameter, and the general embedding depth is 200-400cm. When burying the casing, it is 30cm higher than the natural ground, and a slurry outlet is opened at the top, facing the mud ditch. In special cases, the depth of the casing can be increased, and the specific gravity of the mud can be increased (the mud can be poured into clay), and the impact can be slow. Appropriately lower the water level in the casing. If the edge of the protective tube is exposed to water, the surrounding can be filled with clay to strengthen the protective tube. Severe subsidence and displacement should be reworked and re-embedded to protect the casing; if the wall of the punched hole leaks, it can be recycled into clay or green potassium (mud powder) to make slurry so as to increase the proportion of the mud; after the casing is buried, it should be used Line hammer and wooden ruler, measure the distance from the edge of the casing to the center of the pile position in the cross direction (or in the positive and horizontal direction of the route), and make original construction records. Deviation, the deviation should not be greater than 5em. And the guard piles are buried around the mouth of the guard (buried in the cross direction and four marks are drawn), so that the operator and the quality inspector can use the cross method to find out the center position of the pile.