Results 21 to 30 of about 4,929,479 (165)

Gradation design method for rockfill materials based on fractal theory

open access: yesYantu gongcheng xuebao, 2017
According to the fractal theory, the fractal distribution formula of gradation for rockfill materials is deduced. The field gradation data of six dams with clay core and five 200 m-high CFRDs are used to verify the relevant achievements. The result shows
ZHU Sheng 1,2, DENG Shi-de 1,2, NING Zhi-yuan 1,2, WANG Jing 1,2
doaj   +1 more source

Particle breakage characteristics of rockfill materials and correction of Wan-Guo hardening rule

open access: yesYantu gongcheng xuebao, 2020
The particle breakage problem of super-high rockfill dams is a hot issue in the current researches. For the rockfill materials of the world's highest concrete faced rockfill dam, Shuibuya Dam, the consolidated drained tri-axial tests with the maximum ...
SUN Da-wei 1, 2, ZHANG Liang 1, 2, XU Zhi-hua 1, 2, ZHANG Guo-dong 1, 2
doaj   +1 more source

State-dependent 3D multi-mechanism bounding surface model for rockfills

open access: yesYantu gongcheng xuebao, 2018
The rockfill materials have been widely used in the construction of rockfill dams due to their high strength, small deformation and strong permeability. The strength and deformation characteristics of the rockfill materials are essential prerequisites to ...
FANG Huo-lang 1,2, CAI Yun-hui 1, WANG Wen-jie 1
doaj   +1 more source

The influence of membranes on tests of coarse-grained materials at low cell pressures

open access: yes, 2014
In triaxial tests on small specimens of sands/silts and clays, cell pressures are usually greater than 100 kPa and membranes are relatively thin (~0.3 mm).
Powrie, W.   +3 more
core   +2 more sources

Rockfill material uncertainty inversion analysis of concrete-faced rockfill dams using stacking ensemble strategy and Jaya optimizer

open access: yesWater Science and Engineering, 2023
Numerical simulation of concrete-faced rockfill dams (CFRDs) considering the spatial variability of rockfill has become a popular research topic in recent years.
Qin Ke   +3 more
doaj   +1 more source

Experimental study on effect of scaling on compact density of coarse-grained soils

open access: yesYantu gongcheng xuebao, 2019
There is a certain difference in compact density of rockfill materials between the real gradation and corresponding scaling gradation. In order to describe the difference quantitatively, the scaling effect can be divided into two parts, changes of the ...
WU Er-lu 1, 2, ZHU Jun-gao 1,2, GUO Wan-li 3, CHEN Ge 1, 2
doaj   +1 more source

Damage evolution mechanism and safety evaluation criterion of ultra-high rockfill dam system under strong earthquakes

open access: yesYantu gongcheng xuebao, 2022
Several ultra-high earth and rockfill dams up to 250 to 300 m in height are to be built in the intensive earthquake regions of West China. The strong outburst and high uncertainty of strong earthquakes pose a great threat to the safety of ultra-high ...
ZOU De-gao 1, 2, LIU Jing-mao 1, 2, KONG Xian-jing 1, 2, CHEN Kai 1, 2, QU Yong-qian 1, 2, NING Fan-wei 1, 2, GONG Jin 1, 2
doaj   +1 more source

Dependence of shape on particle size for a crushed rock railway ballast [PDF]

open access: yes, 2013
Laboratory testing of railway ballast poses practical difficulties because the particle size is often too large for most standard apparatus. There are therefore advantages in developing a scaled material whose behavior is representative of the full size ...
Le Pen, Louis   +9 more
core   +1 more source

Investigation of Mechanical Behaviour of Rockfill Materials

open access: yes, 2023
© 2024 Reza AsadiThe study of the mechanical behaviour of rockfill material, an essential element in diverse geotechnical applications including dams, railway subgrades, and offshore structures, continues to be a critical area of exploration due to its ...
Asadi, Reza
core   +1 more source

Effect of Normal and Shear Interaction Stiffnesses on Three-Dimensional Viscoplastic Creep Behaviour of a CFR Dam

open access: yesAdvances in Civil Engineering, 2018
Rockfill materials and foundation continuously interact with each other during lifetime of the rockfill dams. This interaction condition alters the viscoplastic behaviour of these dams in time.
Memduh Karalar, Murat Çavuşli
doaj   +1 more source

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