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タイトル: 弱面を含む自然斜面の逐時破壊現象の有限要素解析
その他のタイトル: The Fillite Element Analysis For The Successive Failures In Natural Slopes Containing A Weakness Plane.
著者: 伊勢田, 哲也 / 棚橋, 由彦
著者(別表記) : Iseda, Tetsuya / Tanahashi, Yoshihiko
発行日: 1973年12月
出版者: 長崎大学工学部 / Faculty of Engineering, Nagasaki University
引用: 長崎大学工学部研究報告, (4), pp.81-89; 1973
抄録: The primary purpose of the present paper is to investigate the developement of a local failure in slope and the transitional deformation to collapse, which cannot be analysed by the clasical stability analyses of slopes. In this paper,such a finite element analysis is proposed that cross anisotropic materials (i. e. transversely isotropic ones) simulate the soil materials after yield which reduced thier stiffness anisotropically to the direction of the plane of both slide and tensile rupture. And we aplly it to the slope containing the very soft clay layer which parallels the surface of slope partially. The following conclusions have been drawn from the numerical analyses. 1) A local failure usually initiate at the discontinuities (i.e. the edge of the weakness plane). 2) Soil materials are weakened by a number of small tensile cracks along the bed,before a slope collapse occurs along the rainforced plane. 3) The displacement has an inclination to become larger nonlineally,with the developement of a local failure. As the result of calculating the safety factor Nf,apllying the clascal stability analysis to the model analysed by the finite element method,we recognised it rather dangerous to aplly it easely to natural slopes,becouse it can take no account of a local failure that caused by the stress concentration depends on the discontinuities.
URI: http://hdl.handle.net/10069/23808
ISSN: 02860902
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher

引用URI : http://hdl.handle.net/10069/23808



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