Constitutive model of water-saturated marble under coupling effects of uniaxial impact compressive loading and low-temperature

Title:

Constitutive model of water-saturated marble under coupling effects of uniaxial impact compressive loading and low-temperature

Creator:

Li, Junzhe, Zhang, Guang, Liu, Mingze, Hu, Shaohua, and Zhou, Xinlong

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:946cd959-cea0-4127-913e-7ad9fac1cee0
uuid:946cd959-cea0-4127-913e-7ad9fac1cee0
issn:1214-9705
doi:10.13168/AGG.2020.0011

Subject:

geodynamika, geodynamics, damage constitutive model, impact load, frozen rock, component combination, weibull distribution, 7, and 551

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

The study of the mechanical properties of frozen rock is a basic problem that humans have to face in artificial low-temperature rock engineering and cold region rock engineering. There are few literatures on the dynamic constitutive models of frozen rocks under low-temperature gradients at home and abroad. In this paper, the constitutive model of water-saturated marble under the coupling effects of uniaxial impact compressive load and low-temperature is studied by theoretical analysis and experimental verification. Based on the theory of mechanical element combination, a rock constitutive model considering strain rate effect, damage softening effect and low-temperature effect is established, and the model parameters are determined by fitting method. The dynamic stress-strain curve of water-saturated marble at -30 °Cis predicted. The predicted results are in good agreement with the experimental results and the concordance correlation coefficient is 0.984092. The relevant results of this paper can provide a theoretical reference for the excavation and protection of rock engineering under negative temperature., Junzhe Li, Guang Zhang, Mingze Liu, Shaohua Hu and Xinlong Zhou., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

157-168

Source:

Acta geodynamica et geomaterialia : | 2020 Volume:17 | Number:2 (198)

Harvested from:

CDK

Metadata only:

false