By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Geomechanics. According to news reporting originating in Xuzhou, People’s Republic of China, by NewsRx journalists, research stated, “In recent years, a new technique of ground improvement, which involves the combined use of impervious column and vertical drains, has been proposed and utilized in many field projects to accelerate consolidation and increase bearing capacity of soft soil ground. To cover the possible distribution patterns of impervious columns and vertical drains, 2 analytical models, including Model A with outward flow and Model B with inward flow within the soils, are proposed to predict the consolidation of combined composite ground by considering the following factors: (1) disturbance effects of both impervious columns and vertical drains, (2) the well resistance of vertical drains, and (3) time-variant loadings.”
The news reporters obtained a quote from the research from the China University of Mining and Technology, “The average degrees of consolidation predicted by the proposed analytical models are compared with several existing solutions and then against the measured data in the literature. The consolidation behavior of a combined composite ground is investigated by the proposed analytical solutions. The results show that the combined use of impervious columns and vertical drains can remarkably accelerate the consolidation rate of soft soils compared with the single use of either of them. The average degrees of consolidation predicted by both analytical models agree well with the measured data. Compared with Model B, Model A usually predicts a faster consolidation rate because of a shorter drainage path.”
According to the news reporters, the research concluded: “Many factors can influence consolidation behavior of combined composite ground, such as loading scheme, distribution patterns and the disturbance effects of impervious columns and vertical drains, and compression modulus ratio of impervious column to soil.”
For more information on this research see: Analytical models for consolidation of combined composite ground improved by impervious columns and vertical drains. International Journal for Numerical and Analytical Methods in Geomechanics , 2018;42(6):871-888. International Journal for Numerical and Analytical Methods in Geomechanics can be contacted at: Wiley, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - http://www.wiley.com/; International Journal for Numerical and Analytical Methods in Geomechanics - http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1096-9853)
Our news correspondents report that additional information may be obtained by contacting M.M. Lu, China Univ Min & Technol, Sch Mech & Civil Engn, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, People’s Republic of China. Additional authors for this research include H.W. Jing, A.N. Zhou and K.H. Xie.
The direct object identifier (DOI) for that additional information is: https://doi.org/10.1002/nag.2770. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.
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CITATION: (2018-05-04), Reports Outline Geomechanics Study Results from China University of Mining and Technology (Analytical models for consolidation of combined composite ground improved by impervious columns and vertical drains), Science Letter, 1008, ISSN: 1538-9162, BUTTER® ID: 015603565
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