从注气增压对土体作用效果的角度出发，建立增压式真空预压固结解析理论模型。提出基于注气增压压力等效的受力简化模型；引入新参数——径向渗透系数增大系数h，反映注气过程对土体渗透性质的改变。根据Barron等应变假定和达西定律，考虑排水板涂抹效应与井阻作用、土体径−竖向渗流以及上部堆载，推导增压式真空预压固结控制方程及其解析解，并利用弹性力学方法推导等效注气增压压力p(t) 的计算公式。针对瞬时增压和线性增压两种特例给出具体解析解公式，并通过与工程案例对比分析，验证了解析解及等效力计算方法的合理性。通过对固结性状的分析得出如下结论：注气增压方法可增大土体负孔隙水压力值，加速土体排水固结；“参数η”对固结速率的影响较大，分析模型中考虑注气过程对径向渗透系数的改变会更加合理；井阻作用会导致土体固结速率减慢，径−竖向渗流时孔压能够消散完成，而只有径向渗流时孔压无法消散完成。This paper presents ananalytical theoretical model for air-boosted vacuum preloading

focusing on theinfluence of air injection on soil consolidation. A simplified force modelbased on the equivalence of air-boosted pressure is proposed

and a newparameter called the “horizontal permeability coefficient increase parameter h” is introduced to account for changes in soil permeabilitydue to gas injection. Based on Barron equal vertical strainassumption and linear Darcy’s law

the governing equation and consolidation analytical solutionfor air-boosted vacuum preloading are derived

considering factors such asradial and vertical seepage

prefabricated vertical drain smear effect

wellresistance

and surcharge. Additionally

the theoretical formula for theequivalent air-boosted pressure p(t) is derived using elastic mechanicsmethods. Specific analytical solutions are provided for two cases:instantaneous air-boosted and linear air-boosted. An engineering case study isused to verify the rationality of the analytical solution and the mechanicalequivalence method. Through the analysis of consolidation behavior

thefollowing conclusions are drawn: the air injection boosting method increasesthe negative pore water pressure in the soil

facilitating faster drainage andconsolidation; the “η ” parameter significantlyaffects the consolidation rate

and considering changes in the horizontalpermeability coefficient during gas injection improves the accuracy of theanalysis model; well resistance slows down the consolidation rate

and while porepressure can dissipate completely during radial and vertical seepage

it maynot dissipate completely during radial seepage alone.