Journal Published Online: 29 June 2023
Volume 51, Issue 6

Effect of Particle Shape on Dynamic Characteristics of Artificial Rockfill

CODEN: JTEVAB

Abstract

The particle shape of rockfill materials varies greatly, and their dynamic characteristics under cyclic loading are important parameters in dynamic response analysis and construction design. In this study, three types of artificial rockfills with different particle shapes (cylinder, cube, and prism) were prepared by the cement slurry casting method. Cyclic triaxial tests were conducted to investigate the effects of confining pressure, loading frequency, and consolidation stress ratio on the dynamic behavior and particle breakage characteristics of artificial rockfill (AR). It was found that the prepared AR can approximately simulate the shear modulus and damping ratio of natural rockfill. The shear modulus decreased with the increase of particle shape coefficient regularity. The maximum shear modulus and the particle shape coefficient regularity can be approximately fitted by a power function. Particle shape does not affect the relationship between the normalized shear modulus and normalized shear strain, whereas it has an impact on the damping ratio of AR. The larger the confining pressure and the larger the particle shape coefficient, the more significant the particle breakage is.

Author Information

Yang, Gui
Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, China
Wu, Jiexin
College of Civil and Transportation Engineering, Hohai University, Nanjing, China
Chen, Zhuanzhuan
College of Civil and Transportation Engineering, Hohai University, Nanjing, China
Zhang, Yanmei
College of Civil and Transportation Engineering, Hohai University, Nanjing, China
Zhu, Jin
College of Civil and Transportation Engineering, Hohai University, Nanjing, China
Pages: 13
Price: $25.00
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Details
Stock #: JTE20220389
ISSN: 0090-3973
DOI: 10.1520/JTE20220389