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真空预压加固地基,是在地基表面铺设密封膜,通过特制的真空设备抽真空,使密封膜下砂垫层内和土体中垂直排水通道内形成负压,加速孔隙水排出,从而使土体固结、强度提高的软土地基加固法。真空预压法适用于加固淤泥、淤泥质土和其他能够排水固结而且能形成负超静水压力边界条件的软粘土。
Vacuum preloading reinforces the foundation by placing a sealing film on the surface of the foundation and drawing a vacuum through a special vacuum equipment to create a negative pressure in the sand cushion under the sealing film and in the vertical drainage channel in the soil, accelerating the discharge of pore water, thereby making the soil Consolidation and strength enhancement of soft soil reinforcement. The vacuum preloading method is suitable for the consolidation of silt, silty clay, and other soft clays that are capable of drainage consolidation and form negative hydrostatic pressure boundary conditions.