仓库地基处理设计要求：工后沉降≤10m，则施工沉降量必须≥370.3m

The design requirements for the foundation treatment of the warehouse: after the construction is ≤10m, the construction settlement must be ≥370.3mm; the bearing capacity fak≥120kPa of the surface soil after dynamic tamping or rolling; the foundation elevation of the foundation treatment is controlled according to 1.3 requirements. <br>The treatment method is adopted: "vacuum water-loaded combined preloading + impact rolling compaction technology", that is, vacuum preloading + water-covered stacking + impact rolling compaction method is mainly used. <br>The ground treatment scope of this site is expanded on each side and taking into account the surrounding roads. The ground treatment area is about 32560m2, divided into a treatment area, the treatment depth is about 20m below the current surface, and the vertical drainage body is set to ③ 2nd layer is the bottom surface of sandy silty layer . The water-covering depth is 2.0m on average. Before foundation treatment, backfill 1.0m thick plain fill on the current surface. <br>The calculation shows that under the action of 80kpa vacuum load, 2m overlying water load and 1.0m backfill soil, the total preload of the undisturbed foundation soil is about 116kpa, which is much larger than the additional load of 85.65kpa under the applied load, forming an overload preload.

Warehouse foundation processing design requirements: after the settlement of the work of 10m, the construction settlement amount must be 370.3mm;<br>The treatment method is used: "vacuum water-borne joint pre-pressure-impact crushing joint technology", that is, the main use of real-air pre-pressure and cover water pile-load-and-impact crushing method.<br>The site foundation processing range according to each edge expansion and take into account the surrounding roads, the foundation processing area of about 32560m2, divided into a processing area, processing depth of about 20m below the surface, vertical drainage body set to (3) 2 layers for the sand soil layer bottom. The average water cover depth is 2.0m. The foundation is backfilled with 1.0m thick soil before the surface is treated.<br>The calculation shows that under the action of 80kpa vacuum load, 2m cover load and 1.0m backfill load, the total pre-pressurized load for the original base soil is about 116kpa, which is much larger than the additional load of 85.65kpa under the load, resulting in overloadpreed pre-pressure.

Design requirements for warehouse foundation treatment: if the post construction settlement is ≤ 10m, the construction settlement must be ≥ 370.3mm; the bearing capacity of the surface soil after dynamic compaction or rolling is FAK ≥ 120kPa; the handover elevation of the foundation treatment shall be controlled according to the requirements of article 1.3.<br>The treatment method: "vacuum water load combined precompression + impact rolling combined technology", that is, vacuum precompression + covered water surcharge + impact rolling method is mainly used.<br>The foundation treatment scope of the site is expanded on each side and the surrounding roads are taken into account. The foundation treatment area is about 32560m2, divided into one treatment area, the treatment depth is about 20m below the surface, and the vertical drainage body is set to the bottom of layer ③ 2, which is sandy silt layer. The average covering depth is 2.0m. Before foundation treatment, 1.0m thick plain fill shall be backfilled on the surface of the site.<br>The calculation shows that the total preloading load of the undisturbed foundation soil is about 116kpa under the action of 80kPa vacuum load, 2m water cover load and 1.0m backfill load, which is far greater than the additional load of 85.65kpa under the service load, forming the overload preloading.<br>