Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Combined Static–Dynamic Loading Effect on the Wave Transmission Properties in Rock Masses with Macrojoint and Microdefect
https://orcid.org/0000-0002-7744-692X
Abstract The wave transmission properties in double-scale discontinuous rock masses subjected to both static prestress and dynamic loads are investigated. The double-scale discontinuous rock masses refer to rock masses that contain macrojoint and microdefect. The split three characteristic lines method is extended to predict wave propagation under combined static–dynamic loads by introducing the mechanical properties of macrojoints and microdefects under static prestress. The amplitude and energy transmission coefficients of wave propagation through rock masses under different static prestresses are investigated. A comparison between the results of the present study and those of a traditional study that does not consider microdefects is performed to evaluate the effect of microdefects on wave propagation. The results show that the proposed method can effectively analyze wave propagation through double-scale discontinuous rock masses under static prestress. The amplitude and energy transmission coefficients increase with an increase in static prestress. Under an arbitrary static prestress, the results obtained from the present study are always smaller than those obtained from the traditional study, because the effects of microdefects are considered in the present study. However, when the static prestress is small, the effect of microdefects on wave propagation is slight. When the static prestress is large, the effect of microdefects on wave propagation is relatively significant, and microdefects in the rock mass cannot be disregarded.
Highlights Wave propagation in a rock mass under combined static-dynamic loads is investigated.The split three characteristic lines method considering static prestress is proposed.The mechanical behaviors of the joint and microdefect under static prestress are introduced.The effects of static prestress on wave transmission are discussed.
Combined Static–Dynamic Loading Effect on the Wave Transmission Properties in Rock Masses with Macrojoint and Microdefect
https://orcid.org/0000-0002-7744-692X
Abstract The wave transmission properties in double-scale discontinuous rock masses subjected to both static prestress and dynamic loads are investigated. The double-scale discontinuous rock masses refer to rock masses that contain macrojoint and microdefect. The split three characteristic lines method is extended to predict wave propagation under combined static–dynamic loads by introducing the mechanical properties of macrojoints and microdefects under static prestress. The amplitude and energy transmission coefficients of wave propagation through rock masses under different static prestresses are investigated. A comparison between the results of the present study and those of a traditional study that does not consider microdefects is performed to evaluate the effect of microdefects on wave propagation. The results show that the proposed method can effectively analyze wave propagation through double-scale discontinuous rock masses under static prestress. The amplitude and energy transmission coefficients increase with an increase in static prestress. Under an arbitrary static prestress, the results obtained from the present study are always smaller than those obtained from the traditional study, because the effects of microdefects are considered in the present study. However, when the static prestress is small, the effect of microdefects on wave propagation is slight. When the static prestress is large, the effect of microdefects on wave propagation is relatively significant, and microdefects in the rock mass cannot be disregarded.
Highlights Wave propagation in a rock mass under combined static-dynamic loads is investigated.The split three characteristic lines method considering static prestress is proposed.The mechanical behaviors of the joint and microdefect under static prestress are introduced.The effects of static prestress on wave transmission are discussed.
Combined Static–Dynamic Loading Effect on the Wave Transmission Properties in Rock Masses with Macrojoint and Microdefect
https://orcid.org/0000-0002-7744-692X
Abstract The wave transmission properties in double-scale discontinuous rock masses subjected to both static prestress and dynamic loads are investigated. The double-scale discontinuous rock masses refer to rock masses that contain macrojoint and microdefect. The split three characteristic lines method is extended to predict wave propagation under combined static–dynamic loads by introducing the mechanical properties of macrojoints and microdefects under static prestress. The amplitude and energy transmission coefficients of wave propagation through rock masses under different static prestresses are investigated. A comparison between the results of the present study and those of a traditional study that does not consider microdefects is performed to evaluate the effect of microdefects on wave propagation. The results show that the proposed method can effectively analyze wave propagation through double-scale discontinuous rock masses under static prestress. The amplitude and energy transmission coefficients increase with an increase in static prestress. Under an arbitrary static prestress, the results obtained from the present study are always smaller than those obtained from the traditional study, because the effects of microdefects are considered in the present study. However, when the static prestress is small, the effect of microdefects on wave propagation is slight. When the static prestress is large, the effect of microdefects on wave propagation is relatively significant, and microdefects in the rock mass cannot be disregarded.
Highlights Wave propagation in a rock mass under combined static-dynamic loads is investigated.The split three characteristic lines method considering static prestress is proposed.The mechanical behaviors of the joint and microdefect under static prestress are introduced.The effects of static prestress on wave transmission are discussed.
Combined Static–Dynamic Loading Effect on the Wave Transmission Properties in Rock Masses with Macrojoint and Microdefect
Wang, M. (Autor:in) / Shang, J. L. (Autor:in) / Fan, L. F. (Autor:in)
2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB41
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