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035 _a.b11816624
099 9 _aAIT Thesis no.GE-99-16
100 1 _aChung, Ta-chi
245 1 0 _aCorner effect on lateral wall movement of deep excavation in Metropolitan Bangkok
260 _aBangkok :
_bAsian Institute of Technology,
_c2000
300 _a193 leaves
490 1 _aThesis ;
_vno. GE-99-16
500 _aA thesis submitted in partial fufillment of the requirements for the degree of Master of Engineering, School of Civil Engineering
520 _aA elastic-plastic, undrained, three-dimensional (3-D) Finite Difference Method(FDM) is adopted to investigate the effects of corners on lateral wall movement and ground settlement around multi-strutted deep excavations in Bangkok, Thailand. The technique as well as the numerical procedures for modeling the excavation processes was proposed using FDM program, FLACD, to assess the significance of corner constraint in typicalsized excavation. A series of convergence studies were performed in order to minimize the number of elements and nodes without sacrificing the accuracy of 3-D analysis. It was found that adequate convergence for the wall movement and ground settlement is yielded at a distance of three times excavation depth (3H) from the corner. The corner effects were studied by analyzing a typical excavation in Bangkok soft clay layers. By performing a series of parametric studies, a quantitative relationship is developed for estimating three-dimensional maximum wall deflection of an excavation based on the corresponding two-dimensional numerical results. Finally, the case of excavation, Rajavej Hospital Project (Top-Down construction), with field measurements of wall movement was estimated using above relationship. The results of analyses show excellent agreement with field measurements.
502 _aThesis (M.Eng.) - Asian Institute of Technology 2000
650 0 _aExcavation
_xThailand
_xBangkok
700 1 _aLin, Der Guey,
_eChairperson
700 1 _aBalasubramaniam, A.S.,
_eExamination Committee
700 0 _aNoppadol Phien-Wej,
_eExamination Committee
700 1 _aMiura, Kinya,
_eExamination Committee
710 2 _aChinese Taipei,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. GE-99-16
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B11779
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