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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：大连理工大学白俄罗斯国立大学联合学院院长、直属党支部书记
其他任职：辽宁省极地海洋专业技术创新中心主任
性别：男
出生日期：1972-12-30
毕业院校：大连理工大学
学位：博士
所在单位：力学与航空航天学院
学科：计算力学. 固体力学. 工程力学. 船舶与海洋结构物设计制造. 岩土与环境力学
办公地点：大连理工大学主校区海宇楼(1号实验楼)607室
联系方式：0411-84708683
电子邮箱：jisy@dlut.edu.cn
风沙影响下铁路道碴变形模量的离散元数值分析
点击次数：
发表时间：2022-10-09
发表刊物：计算力学学报
卷号：29
期号：3
页面范围：439-445
ISSN号：1007-4708
摘要：Investigation on elastic modulus of railway ballasts in wind with
different sand contents can be benefited to understand the dynamic
characteristics of railway track in wind-blown sand areas.In this
study,discrete element models are developed,and elastic modulus is
calculated of ballasts in wind with different sand contents gamma.The
results show that elastic modulus remains a constant with low sand
contents(gamma<30%),and decreases linearly with increasing sand contents
with high sand contents(gamma >30%).The simulation results agree with
the experimental results.The internal mechanism of the relationship
between elastic modulus and different sand contents is analyzed in terms
of the strength and the spacial distribution of the force chains,and the
coordination number of ballast-sand mixtures.The present study can be
helpful for the understanding of the dynamic properties of ballasted
railway tracks in wind-blown sand areas,and for the structure design and
sand disaster treatments of ballasted beds.
备注：新增回溯数据