Study on high temperature dynamic characteristics and mesoscopic simulation of HFRC under dynamic and static combined loading

Liu, Lei; Cai, Yongzhi; Chen, Xinzuo; Liang, Jixing; Xu, Zehui

doi:10.1016/j.istruc.2023.105824

Structures

2024

DOI: 10.1016/j.istruc.2023.105824

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Study on high temperature dynamic characteristics and mesoscopic simulation of HFRC under dynamic and static combined loading

Lei Liu,

Yongzhi Cai,

Xinzuo Chen

et al.

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Cited by 2 publications

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Three-dimensional mesoscopic investigation on the dynamic compressive behavior of coral sand concrete with reinforced granite coarse aggregate (GCA)

Guo,

Dong,

et al. 2025

Composite Structures

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Three-dimensional mesoscopic investigation on the dynamic compressive behavior of coral sand concrete with reinforced granite coarse aggregate (GCA)

Guo,

Dong,

et al. 2025

Composite Structures

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Effects of In-Situ Stress on Damage and Fractal during Cutting Blasting Excavation

Wu,

Zhang,

et al. 2024

Fractal Fract

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Blasting excavation of rock masses under high in-situ stress often encounters difficulties in rock fragmentation and a high boulder rate. To gain a deeper understanding of this issue, the stress distribution of rock masses under dynamic and static loads was first studied through theoretical analysis. Then, the ANSYS/LS-DYNA software was employed to simulate the blasting crack propagation in rock masses under various in-situ stress conditions. The fractal dimension was introduced to quantitatively analyze the influence of in-situ stress on the distribution of blasting cracks. The results indicate that in-situ stress primarily affects crack propagation in the later stages of the explosion, while crack initiation and propagation in the early stages are mainly driven by the explosion load. In-situ stress significantly influences the damage area and fractal dimension of cut blasting. Under hydrostatic in-situ stress, as the in-situ stress increases, the damage area and fractal dimension of blasting cracks gradually decrease. Under non-hydrostatic in-situ stress, when the principal stress difference is small, in-situ stress promotes the damage area and fractal dimension of the surrounding rock, enhancing rock fragmentation. However, when the principal stress difference is large, in-situ stress inhibits the damage area and fractal dimension of the surrounding rock, hindering effective rock breaking.

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Study on high temperature dynamic characteristics and mesoscopic simulation of HFRC under dynamic and static combined loading

Cited by 2 publications

References 20 publications

Three-dimensional mesoscopic investigation on the dynamic compressive behavior of coral sand concrete with reinforced granite coarse aggregate (GCA)

Three-dimensional mesoscopic investigation on the dynamic compressive behavior of coral sand concrete with reinforced granite coarse aggregate (GCA)

Effects of In-Situ Stress on Damage and Fractal during Cutting Blasting Excavation

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