某湖滨道路的软土地基采用真空预压加固,真空预压的加固效果采用十字板剪切试验与静力触探等原位试验方法检验。试验结果表明预压前后土体强度有明显提高。利用既有的一些理论、经验公式,提出了根据强度增长随深度的递减规律推算超固结比、真空固结应力沿深度方向分布规律的建议。真空固结应力沿深度方向分布规律与孔隙水压力减小量沿深度方向分布规律监测结果较为接近。 The soft soil foundation of a lakeside road is reinforced by vacuum preloading. The reinforcement effect of vacuum preloading is verified by the in-situ test methods such as the cross-shear test and the static probe. The test results show that soil strength before and after pre-compression has been significantly improved. Based on some existing theories and empirical formulas, some suggestions are proposed to calculate the excess consolidation ratio and the distribution law of vacuum consolidation stress in the depth direction according to the law of decreasing strength with depth. The distribution of vacuum consolidation stress along the depth direction and the distribution of pore water pressure decrease along the depth direction of the monitoring results are closer.