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- W4313478372 abstract "The energy-absorbing bolt is an advanced reinforcing element in rock mass to absorb the deformation energy. In this paper, the time-dependent reinforcement provided by the energy-absorbing bolt was analyzed based on assumptions of the reinforced rock unit (RRU) model for systematic bolting. The energy-absorbing bolt was simulated with an ideal elastic–plastic material law. The rheological behavior of the energy-absorbing bolt was represented by the connection of a Hookean elastic element and a Saint Venant element in series. The constitute model and creep behavior of the RRU under a sudden stress change were obtained by assuming the rock was a general Kelvin material. It showed the RRU exhibited an instantaneous jump in the strain, transient creep, and steady-state creep under a sudden change of external stress. The resulting stress in the rock decreased progressively as that in the energy-absorbing bolt could sustain the loading as large as its designed yielded stress. The constitutive models of RRU were applied to predict the convergences of surrounding rock mass in a mining roadway, in Anhui province, China. Good agreements were achieved between the analytical solutions and the field-monitored data." @default.
- W4313478372 created "2023-01-06" @default.
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- W4313478372 date "2023-02-01" @default.
- W4313478372 modified "2023-10-14" @default.
- W4313478372 title "Constitutive behavior of reinforced rock unit anchored by an energy-absorbing bolt" @default.
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- W4313478372 doi "https://doi.org/10.1016/j.tust.2022.104945" @default.
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