Construction technology of steel plastic grille
(6) in the third layer (coarse sand) after rolling, along the line in the longitudinal slope on both sides of the geogrid two, overlapping 0.16m, and connected with the same method, and then start the earthwork construction work, laying geogrid in slope protection, each layer must measure the laying of lines, each side to ensure the slope renovation of geogrid buried in slope soil 0.10m.(7) when the geogrid is filled with two layers of soil, that is to say, the thickness of 0.8m is required to lay a layer of geogrid at the same time on both sides, and so on.(8) the Subgrade after timely slope renovation, and dry rubble slope protection, in addition to each side of the roadbed widening 0.3m, and set aside 1.5% of the settlement.
(4) the first layer of geogrid paved, began to fill with second layers of 0.2m in thick sand (coarse), the method of sand transport to the site: car unloading to the subgrade side, then put forward to push the bulldozer, within 2 meters on both sides of the subgrade filling after 0.1M, the first layer of geogrid fold up and then fill in 0.1 meters in the sand (coarse), from both sides to the middle filling and advance, prohibit all machinery without filling (coarse sand) of Geogrid on traffic operation, it can guarantee the geogrid is smooth, does not play drums, do not wrinkle, stay in the second layer (coarse) after the formation of sand, the level of measurement, to prevent uneven filling thickness, leveling and correct use of vibratory roller 25T static pressure two times.(5) as the second layer of geogrid layer construction method with the first method, and finally filling in 0.3m (coarse sand), filling in the same way as the first layer, using 25T hydrostatic roller two times, so subgrade reinforcement is dealt with.
(1) the first accurate release of subgrade slope line, in order to ensure the roadbed width of each side of the widened 0.5m, soil drying good leveling by 25T after vibroll pressure two times, then 50T shock pressure of four times, with artificial leveling uneven place.(2) 0.3m thick medium (coarse) sand, artificial with mechanical leveling, 25T vibratory roller static pressure two times.(3) geogrid, geogrid laying bottom surface should be smooth, dense, should generally be tiled, straight, no overlap, no curl, kink, two pieces of geogrid adjacent to lap 0.2m, and along the horizontal Subgrade of geogrid overlap every 1 meters with 8 wire were interspersed in the grid connection, and laying on every 1.5-2m U nail is fixed on the ground.
