Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dynamic Behavior of Rock Joint under Different Impact Loads
Abstract In order to investigate the influence of the rock joint to rock mass on dynamic loading, the Split Hopkinson Pressure Bar (SHPB) apparatus is used as an effective instrument. Using three different samples of intact (Series A), unfilled joint (Series B), and filled joint (Series C) interfaces, impact tests were performed under different impact speeds. Results showed that the peak strength of series B and C was 55%–75% that of series A. Series C was 10%–20% lower than series B because the former was filled with gypsum in the interface. The attenuation law of the transmission coefficient and failure mode caused by the rock joint was also obtained. To address the problem of classic rock joint constitutive relations being unsuitable under dynamic loading, a new regular expression is proposed by defining two velocity impact factors at respective impact velocities of 3.6 m/s, 6.6 m/s, and 9.6 m/s. Calculation results of this function are tested and verified, and the data are highly consistent.
Dynamic Behavior of Rock Joint under Different Impact Loads
Abstract In order to investigate the influence of the rock joint to rock mass on dynamic loading, the Split Hopkinson Pressure Bar (SHPB) apparatus is used as an effective instrument. Using three different samples of intact (Series A), unfilled joint (Series B), and filled joint (Series C) interfaces, impact tests were performed under different impact speeds. Results showed that the peak strength of series B and C was 55%–75% that of series A. Series C was 10%–20% lower than series B because the former was filled with gypsum in the interface. The attenuation law of the transmission coefficient and failure mode caused by the rock joint was also obtained. To address the problem of classic rock joint constitutive relations being unsuitable under dynamic loading, a new regular expression is proposed by defining two velocity impact factors at respective impact velocities of 3.6 m/s, 6.6 m/s, and 9.6 m/s. Calculation results of this function are tested and verified, and the data are highly consistent.
Dynamic Behavior of Rock Joint under Different Impact Loads
Wu, Nan (Autor:in) / Zhu, Zhende (Autor:in) / Zhang, Cong (Autor:in) / Luo, Zhihua (Autor:in)
KSCE Journal of Civil Engineering ; 23 ; 541-548
17.12.2018
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Dynamic Behavior of Rock Joint under Different Impact Loads
| Online Contents | 2019
| British Library Conference Proceedings | 1994
Mechanical behavior of rock-shotcrete interface under static and dynamic tensile loads
| British Library Online Contents | 2017
Friction and Degradation of Rock Joint Surfaces under Shear Loads
| British Library Online Contents | 2001
JHR constitutive model for rock under dynamic loads
| British Library Online Contents | 2019