...M. P. Kompala; S. K. Yamsani; G. V. Ramana; V. R. Murty Geosynthetic prefabricated vertical drains PVDs are used to accelerate consolidation of soft soils by shortening drainage paths. However, their discharge capacity often decreases under large settlements due to bending, buckling, and kinking...

.... A rigorous analytical solution for consolidation was derived and verified against field monitoring data. A comparative case study demonstrated superior performance: the final settlement achieved by FVFD was 1.63 times that of TVP (0.65 m vs. 0.40 m), while the construction duration was reduced by over 60...

... are available to facilitate the engineering design of this combined technique. In light of this, a novel analytical model is developed for the large-strain nonlinear thermal consolidation of TPVP-treated slurry. This study comprehensively incorporates the smear effect and well resistance of prefabricated...

...X. Lin; L. Shi; K. Yao; K. Wang; Y. Cai To improve consolidation pressure along the prefabricated vertical drain (PVD), the presented study introduced a novel technique, airlift-assisted vacuum preloading, which incorporated the concept of airlift into traditional vacuum preloading. The innovative...

...Y. Zhou; W. Guo; Y. Ren A new analytical model is proposed to analyze the vacuum consolidation combined with the short PVDs installed within the dredged marine clay layer among the long PVDs installed within the entire clay layer. The predictions from the proposed model align well with both field...

...S. Liu; R. Zhang; J. Cheng; X. Geng; J. Zheng; K. Cheng Horizontal drains are gradually introduced to the vacuum preloading method to improve dredged slurries by adding geotextiles to alleviate the blockage in the consolidation process. This study considers the consolidation of slurries enhanced...

... on the consolidation characteristics of slurry has not been extensively investigated. This study addresses this gap by conducting three groups of experiments using the layered filling approach, one of which focused on the PHDs-PVDs-VP method. Throughout the consolidation process, water discharge and surface settlement...

.... Instrumentation Plan for Zone 7 and Zone 27 The PVD installation is shown in Figure 9 . Soft ground improvement using vacuum-PVD with airtight membranes involves the installation of PVDs interconnected with horizontal drains in the sand blanket at the ground surface to accelerate the consolidation...

...J. Shan; M. Lu; K. Yang Composite pile with a stiffer core and gravel shell is a newly emerging column technology to improve soft soil by combining the advantages of accelerating consolidation and increasing loading bearing capacity. In practice, the composite piles may be constructed into various...

... of coarse and fine particles – that is, silty sand – is complex. For this reason, the modified geotextile tube (MGT) was invented to optimize the filling and dewatering or consolidation performance of geotextile tubes. To assess the behavior of MGTs, experimentation and theoretical analysis were conducted...

...Y. Lu; H. Abuel-Naga; E.-C. Leong This study aims to assess the effect of pore water salinity (sodium chloride (NaCL) solution) on the consolidation behaviour of GCLs (geosynthetic clay liners) using one-dimensional oedometer test apparatus. The experiments include two testing conditions: (1...

...H. J. Kim; T. W. Park; P. R. Dinoy; H. S. Kim; H. J. Kim In planning and designing geotextile tubes, predicting the consolidation characteristics is very important to ensure that the capacity and deformation of the tubes are well regulated during construction. Design and construction parameters...

... the stone column was encased with a geosynthetic material. The effective stress concentration ratio (the ratio of the effective vertical stress on the column to that on surrounding soft clay, ESCR) of the stone column was observed to increase up to a particular consolidation period, beyond which this ratio...

... properties, and only the radial drainage was considered. An axi-symmetric unit cell was established and the solution of average degree of consolidation was derived. The analytical solution was verified by comparisons with the results computed by three-dimensional finite element analyses. A parametric study...

...M.B.D. Elsawy ABSTRACT: Construction of embankments on soft natural soil may be a challenge, owing to its low shear strength and high compressibility. Stone columns, which depend on lateral support from the soft ground, have been utilised to accelerate foundation consolidation, and to increase...

... would result in restriction of water flow and cause significant increases in time for consolidation. Additionally, if soils with a higher hydraulic conductivity, such as 1 × 10⁻⁸ m/s occur at a site, significant increases in consolidation time could occur at percentage settlements in excess...

...D. Basu; M. Prezzi In the present study, the effect of soil disturbance on prefabricated vertical drain (PVD)-enhanced soft soil consolidation was studied using finite element (FE) analysis. Both square and triangular PVD installation arrangements were considered. The actual shapes of the PVD...

... of geosynthetic reinforcement and the pile walls was very effective for the improvement of soft ground. The numerical results were shown to be in good agreement with the field data observed at the end of consolidation. The deformations of the embankment were examined under three different conditions: (1...

... of the embankment was assumed to be done in 2 m increments, each lift of which was completed in 15 days with another 10 days of waiting period for consolidation. Table 1. Summary of constitutive model parameters for stone column, clay, and sand/fill materials Property Stone column Clay Sand/fill...

... of consolidation of the saturated soil. and (1b) C ∂ ψ ( x , t ) ∂ x − C ∂ 2 w ( x , t ) ∂ x 2 + q s w ( x , t ) = q ( x ) Geosynthetics Consolidation Granular fill Mechanical model Saturated soft soil Settlement Timoshenko beam...