Research on Settlement Calculation of Soft Foundation Treated with Vacuum Preloading Based on Stress Path Method
Stress state of soft soil foundation under vacuum preloading is completely different from its counterpart under surcharge preloading, and the method of calculating the final settlement of soil mass by means of surcharge preloading (positive pressure) is unreasonable in present design. According to a case of soft foundation stabilized with vacuum preloading and through consolidated-undrained triaxial (CU) test on the specimens sampled in situ, the stress paths under different confining pressure are obtained. The settlement of soft foundation treated with vacuum preloading is calculated by strain isoline method. Compared with the practically measured field data, the errors are analyzed and discussed.
Chaohe Chen, Yong Huang and Guangfan Li
Y. D. Wu et al., "Research on Settlement Calculation of Soft Foundation Treated with Vacuum Preloading Based on Stress Path Method", Advanced Materials Research, Vols. 243-249, pp. 2864-2868, 2011