Experimental studies on soft marine clay under combined vacuum and surcharge preloading with PVD

Bhosle, Sandeep; Deshmukh, V. B.

doi:10.1080/19386362.2018.1496004

Cited by 15 publications

(2 citation statements)

References 15 publications

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“…FEM is a common tool that is used extensively by consultants to model the soil behavior before, during and after the reclamation process. The super structures under construction, soil layer specifications, and machinery availability are the main parameters that determine the final design parameters including sealing measures (Long, Nguyen et al 2015, Anda, Fu et al 2020, depth (Griffin andO'Kelly 2014, Long, Nguyen et al 2015)and spacing (Long, Bergado et al 2013, Wang, Yu et al 2020 , and the required preloading pressure (Bhosle and Deshmukh 2018). (Mesri and Khan 2012) State that there is no difference in the magnitude and rate of settlement resulting from a vacuum load and an equivalent fill load.…”

Section: Introduction Bbbb Bbbsfsfmentioning

confidence: 99%

Coupling Effect and Superposition Law in Soil Treatment Systems Incorporating Vacuum Preloading

pardsouie¹

2022

Preprint

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In previous published literatures it was stated that superposition law might be valid for ground improvement techniques consisting of prefabricated vertical drains (PVDs) along with surcharge and vacuum preloading. Even some professional geotechnical engineers might think of this false idea that superposition law might be valid in such ground improvement techniques. It was shown that the superposition law is not valid because of the hydro-mechanical coupling interactions which exist between vacuum and surcharge preloading. A case history was presented and Finite element modeling (FEM) was used for verification and the demonstration of coupled consolidation interaction between vacuum and surcharge preloading. Three main parameters as settlement, lateral displacement, and excess pore pressure were evaluated for different scenarios. The results that are based on a macro-element approach can be used for better comprehension of the working mechanism of combined treatment systems. Considering the results of this literature, a complex combined vacuum and surcharge preloading can be broken in simpler cases that can be used for either deriving analytical or empirical solutions.

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Section: Introduction Bbbb Bbbsfsfmentioning

confidence: 99%

Coupling Effect and Superposition Law in Soil Treatment Systems Incorporating Vacuum Preloading

pardsouie¹

2022

Preprint

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“…Vacuum preloading with prefabricated vertical drains (PVD) have been extensively used to improve large area soft soil ground in land reclamation engineering. However, the filler material used in the land reclamation project is high plastic clay, which has the characteristics of high plastic index, fine clay particle and low shear strength and poor permeability (Lei et al 2018;Sandeep and Vivek 2018). The conventional vacuum preloading often causes the bending and clogging of PVD, forming "soil column", resulting in poor ground reinforcement effect (Chai et al 2014;Cai et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis on ground improvement of vacuum preloading with prefabricated radiant drain

Lei

Feng

Edgard

et al. 2020

JGS Special Publication

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A new technology of vacuum preloading with prefabricated radiant drain (PRD), including prefabricated vertical drain (PVD) and prefabricated horizontal drains (PHD), was proposed in this paper. The validity of numerical model parameter was verified by comparative analysis of deformation development of numerical simulation results and field tests. In addition, two influence factors of PHD spacing and PHD length for vacuum preloading with PRD technique were systematically studied by finite element method. The results show that vacuum preloading with PRD can obviously improve the reinforcement effect of dredged fill ground. Compared with the conventional vacuum preloading, the maximum settlement of vacuum preloading with PRD respectively is increased by 88.94 % and the maximum lateral displacement is 110.4 % at the PHD spacing of 0.5 m. Moreover, reducing the PHD spacing can improve the ground treatment effect. Compared with the PHD spacing of 1.5 m, the maximum settlement respectively is enlarged by 39.93 % and the maximum lateral displacement is increased by 49.4 % for the PHD spacing of 0.5 m. Increasing the PHD length can boost settlement and lateral displacement for the PHD length range of 0.2 m~0.4 m. The settlement and lateral displacement are 38.98 % and 50.3 % higher for the PHD length of 0.4 m than those for a PHD length of 0.2 m.

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Consolidation and Slope Stability Study of Embankment Made of Ash Fill Supported by Hybrid Stone Columns: 3D Numerical Investigation

Kumar

Rawat

Gupta

2022

Lecture Notes in Civil Engineering

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Experimental studies on soft marine clay under combined vacuum and surcharge preloading with PVD

Cited by 15 publications

References 15 publications

Coupling Effect and Superposition Law in Soil Treatment Systems Incorporating Vacuum Preloading

Coupling Effect and Superposition Law in Soil Treatment Systems Incorporating Vacuum Preloading

Numerical analysis on ground improvement of vacuum preloading with prefabricated radiant drain

Consolidation and Slope Stability Study of Embankment Made of Ash Fill Supported by Hybrid Stone Columns: 3D Numerical Investigation

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