CASE-STUDIES OF SIMULATION OF FRACTURE IN CONCRETE DAMS

被引：53

作者：

INGRAFFEA, AR ^{[1
]}

机构：

[1] CORNELL UNIV,PROGRAM COMP GRAPH,ITHACA,NY 14853

来源：

ENGINEERING FRACTURE MECHANICS | 1990年 / 35卷 / 1-3期

关键词：

D O I：

10.1016/0013-7944(90)90230-E

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Two case studies of crack propagation in concrete gravity dams are described. The studies employ mixed-mode LEFM implemented within a discrete crack, automatic rezoning, finite element method. The study of the Fontana dam elucidated the mechanisms for crack initiation, accurately reproduced observed trajectory, and evaluated the effectiveness of interim repair measures. The study of a generic gravity dam had as its objective the evaluation of usefulness of LEFM for design and quality control during construction. An envelope of safe lengths, heights, and orientations of cracks potentially growing from cold lift joints on the upstream face was derived. It was also shown that, by neglect the toughness of the foundation contact, classical design methods predict a conservative factor-of-safety against sliding, and that, when toughness is set to zero, LEFM predictions are in good agreement with the classical method. © 1990.

引用

页码：553 / 564

页数：12