Dynamic compressive characteristics and damage constitutive model of coral reef limestone with different cementation degrees

Luo, Yi; Gong, Haibiao; Wei, Xiaojie; Zheng, Shao-Hui; Pei, Chenhao; Li, Xinping

doi:10.1016/j.conbuildmat.2022.129783

Cited by 28 publications

(2 citation statements)

References 35 publications

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“…Fu et al [23] found that the elastic modulus of sandstone increased with the cyclic amplitude and cyclic frequency of the cyclic loading. Luo et al [24] studied four types of reef…”

Section: Literature Review and Discussionmentioning

confidence: 99%

“…Fu et al [23] found that the elastic modulus of sandstone increased with the cyclic amplitude and cyclic frequency of the cyclic loading. Luo et al [24] studied four types of reef limestone and obtained the correlations of physical properties of reef limestone and its dynamic and static parameters. Mishra et al [25] found that the dimensions of phyllite and the split Hopkinson pressure bar (SHPB) loading characteristics had impact on the phyllite response.…”

Section: Literature Review and Discussionmentioning

confidence: 99%

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A Thorough Investigation of the Dynamic Properties of Granite under Cyclic Loading

Ding,

Zhao,

Dong

et al. 2023

Applied Sciences

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We propose a novel inverse analysis method that utilizes shockwaves to detect the operational condition of tested rock. To achieve this back analysis, an in-depth investigation of the dynamic properties of granite specimens was conducted. The dynamic properties of the granite specimens were investigated using a triaxial cyclic loading machine, under different confining pressures, loading frequencies, stress amplitudes, and numbers of cycles, and a dynamic response model was constructed from the test data. The results show that the dynamic elastic modulus increased with the increase in confining pressure, while its damping ratio decreased. The dynamic elastic modulus and damping ratio increased with the increase in loading frequency. As the dynamic stress amplitude increased, the dynamic elastic modulus of the granite increased, but the dynamic damping ratio decreased. As the number of cycles increased, the dynamic elastic modulus and dynamic damping ratio of the granite decreased and gradually stabilized. The modified Duncan–Chang model was used to construct the dynamic response model of the specimens. It is worth saying that the correlation coefficient of the model is low at a loading frequency of 20 Hz. This indicates that the frequency has a greater effect on the dynamic response of the specimen compared with the confining pressure. The conclusions obtained from these tests can be used to study more comprehensively the interaction and causal relationship between different factors, and to prepare for the next steps of tunnel rock stress-state prediction.

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“…Fu et al [23] found that the elastic modulus of sandstone increased with the cyclic amplitude and cyclic frequency of the cyclic loading. Luo et al [24] studied four types of reef…”

Section: Literature Review and Discussionmentioning

confidence: 99%