The application of Weibull statistics to the strength of railway ballast

被引：145
|
作者：
Lim, WL
McDowell, GR [1 ]
Collop, AC
机构：
[1] Univ Nottingham, Nottingham Ctr Geomech, Sch Civil Engn, Nottingham NG7 2RD, England
[2] Univ Nottingham, Nottingham Ctr Pavement Engn, Sch Civil Engn, Nottingham NG7 2RD, England
来源：
GRANULAR MATTER | 2004年 / 6卷 / 04期
关键词：
fracture; railway ballast; statistics;
D O I：
10.1007/s10035-004-0180-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The tensile strengths of six types of ballast for various size fractions were investigated and quantified using Weibull statistics. For a given ballast and a given size fraction, the strengths follow the Weibull distribution reasonably well. However, it was found the size effect on strength implied by Weibull statistics for bulk failure of particles, is not consistent with measured values. Various possible reasons for this are explored, namely that the grinding process at the quarry may offer a proof test for ballast, that some ballasts may not be homogeneous or isotropic, and finally that surface fracture rather than bulk fracture may dominate.
引用
收藏
页码：229 / 237
页数：9
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