Theoretical investigation of ground deflected mode after cementation
Journal: Construction, materials science, mechanical engineering (Vol.1, No. 80)Publication Date: 2015-03-24
Authors : Shekhorkina N.E.;
Page : 338-343
Keywords : deflected mode; sand bed; loading diagram; high-pressure cementation; injection radius; elasto-plastic ground model;
Abstract
Purpose. At present information about ground deflected mode after cementation is mostly disembodied because of inaccuraces of existent modeling methods and output information mode.Therefore it is necessary to develop principles of ground deflected mode after cementation investigation with computational modeling which based on finite-element method. There is a need to use comprehensive approach for simulation physical veracity evaluation. Methodology. Proposed principles of ground deflected mode after cementation in Plaxis were based on determination of total deformation, horizontal and vertical displacement in ground mass and raising of it's dayligth. Volumetric strain option was used for modeling the mechanical process of cementation. It also take into account volume of injected grout and injection pressure. Findings. Model and loading diagram of sand bed high pressure cementation were developed. As a results soil density distribution, relations between total deformation, soil dayligth raising and grout volume were established and effectiveness of sand prior damping and plasticizer application for increasing the sand injection ability were verifyied. Originality. Based on the results of high-pressure cementation computational modeling experimental data of injection radius, sand physical characteristic modification for different damp state taking into account water-cement ratio of grout, plasticizer type and dosage were received. Practical value. Taking into account flat version (2D) Plaxis and elasto-plastic ground model developed principles can estimate for certain injection radius and ground deflected mode after cementation (ratio error is aout 7.5%) and thus can used for real strengthening designing.
Other Latest Articles
- The influence of thickness blanks for car drives on the structure and properties of steel 10ХФТБч
- Research on the possibility of controlling the properties of the structural steel surface hardening methods
- Substantiation of rational replacement material for connecting hoses brake system of railways rolling stock
- Effect of modification by titanium aluminide powder on the structure of aluminum castings
- Formation of the first portions of є- and а ' deformationinduced martensite in chromium-nickel steels of the austenitic class
Last modified: 2016-11-10 04:34:56