Boundary surface model for railway ballast considering gradation evolution caused by particle breakage

被引：0

作者：

Yin Z.-X. ^{[1
]}

Gao Z. ^{[1
]}

Zhang J.-C. ^{[2
]}

Sun Y.-F. ^{[3
]}

Feng Y. ^{[4
]}

He H.-R. ^{[5
]}

机构：

[1] Graduate School of Liaoning Technical University, Fuxin, 123000, Liaoning

[2] School of Naval Architecture and Civil Engineering, Jiangsu University of Science and Technology, Zhangjiagang, 215600, Jiangsu

[3] School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong

[4] Financial Investment Review Center of Development Zones in Jinzhou, Jinzhou, 121000, Liaoning

[5] School of Architectural Design Engineering, Hebi Polytechnic, Hebi, 458030, Henan

来源：

Zhang, Jian-Cheng (zjc15951087073@126.com) | 2017年 / Academia Sinica卷 / 38期

基金：

中国国家自然科学基金;

关键词：

Ballast; Bounding surface; Constitutive model; Gradation; Particle breakage;

D O I：

10.16285/j.rsm.2017.09.026

中图分类号：

学科分类号：

摘要：

Particle breakage can occurs within railway ballast under relatively lower confining pressure, resulting in a change in the particle gradation. Gradation significantly influences the physical and mechanical characteristics of ballast. There is an increasingly urgent need for constitutive modeling of ballast for the prediction of gradation evolution under loading conditions. Based on the triaxial test results of ballast, a boundary surface model for ballast under relatively lower confining pressure is developed by employing the fractal breakage index defined by Einav and the theory of boundary surface plasticity. By the comparisons of experimental results, it is shown that the proposed model can well indicate the stress-strain behavior of coarse aggregate under low confining pressure, and provides a reliable prediction of gradation evolution caused by particle breakage during loading. © 2017, Science Press. All right reserved.

引用

页码：2669 / 2675

页数：6

共 25 条

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