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035 _a.b1181570x
099 9 _aAIT Thesis no.GE-99-08
100 0 _aPongsakorn Punrattanasin
245 1 0 _aAnalysis of soft foundation ground improved by deep mixing method (DMM) using cement slurry
260 _aBangkok :
_bAsian Institute of Technology,
_c2000
300 _a140 leaves
490 1 _aThesis ;
_vno. GE-99-08
500 _aA thesis submitted in paitial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering
520 _a This study focuses on the settlement characteristic of improved ground using cement column by Deep Mixing Method (DMM). Initially, the axis-symmetric analysis of DMM unit cell was performed by Finite Element Method (FEM) to investigate the deformation behavior of composite ground. For unit cell analysis, the numerical results of settlement was compared with the mathematical solutions from Alamgir et al (1996). Eventually, good agreement is found in comparison and which verify the capability of computer program to predict the performance of mathematical model. Secondary, considering the finite permeability of cement column, a modified analysis method is proposed based on the conventional Broms analysis method (1984) for lime column. To verify the effectiveness of Modified-Broms analysis method, FEM analysis results and field measurements of a full scale DMM improved ground (BangnaBangpaong Highway Project) were employed for comparison purpose. The comparison between analysis results and field measurements were discussed. To examine the stability problem, stability analyses were performed by using limit equilibrium method. Using numerical results from parametric studies, a series of design chruts were established. The design cha1ts ru·e capable of determining the required design parameters such as column length and spacing based on the allowable settlement rate of DMM improved ground for typical Bangkok subsoil profile. Finally, the calculation spreadsheet for the analysis of DMM improved ground is prepared by using the proposed Modified-Broms analysis method.
502 _aThesis (M.Eng.) - Asian Institute of Technology
650 1 0 _aSoil stabilization
650 1 0 _aFinite element method
650 1 0 _aCement slurry
700 1 _aDer Guey Lin,
_eChairperson
700 1 _aBergado, Dennes T.,
_eExamination Committee
700 1 _aBalasubramaniam, A.S.,
_eExamination Committee
700 0 _aNoppadol Phien-Wej,
_eExamination Committee
710 2 _aRoyal Thai Government,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. GE-99-08
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B06562
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