Abstract
Based on the field test results, the consolidation mechanism of the negative excess pore pressure due to vacuum preloading is presented and analyzed in this paper. The variations in the physical and mechanical properties of soft soil under the mixed slurry wall (MSW) due to vacuum preloading are also analyzed via borehole samples. The test results show that the sealing effect of MSW composed of two-row piles is better than that of single-row piles. According to Darcy's law, the optimal width of the MSW was calculated. It is suggested that a MSW used as the outer boundary of consolidated zone should be constructed using two-row piles when the sand layer is thinner at the deeper positions. However, in order to reduce the hydraulic conductivity of MSW, cement should be added to the MSW when the sand layer is thicker. The dry density, wet density and shear strength increases, while the moisture content, void ratio and compressible coefficient decreases due to vacuum preloading. It was found that soft soil at a depth of 12.0 m under the MSW was also be consolidated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
