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Study on grout cracking and interface debonding of rockbolt grouted system
HighlightsA tri-linear cohesive zone model (CZM) is used to simulate interfacial behaviors.The typical three failure modes are identified.A critical bond strength which controls the failure modes is analyzed.
AbstractTensile tests and numerical analysis of failure models of rockbolt grouted system were conducted in the contribution. The cohesive zone model (CZM) was employed to simulate the interfacial behavior of rockbolt-grout interface and the plastic damage model was adopted for the grout materials. The effects of the interface bond strength and grout compressive strength, etc., on the failure patterns and the load-displacement curves were investigated in detail. Three failure modes of the rockbolt grouted system, namely (1) rockbolt-grout interfacial debonding, (2) complete grout cracking, and (3) a combining pattern of interfacial debonding and grout cracking were identified. The results indicate that there exists a critical bond strength, which controls these failure modes. With the increasing of the bond strength, the failure patterns change from the interfacial debonding to the grout cracking.
Study on grout cracking and interface debonding of rockbolt grouted system
HighlightsA tri-linear cohesive zone model (CZM) is used to simulate interfacial behaviors.The typical three failure modes are identified.A critical bond strength which controls the failure modes is analyzed.
AbstractTensile tests and numerical analysis of failure models of rockbolt grouted system were conducted in the contribution. The cohesive zone model (CZM) was employed to simulate the interfacial behavior of rockbolt-grout interface and the plastic damage model was adopted for the grout materials. The effects of the interface bond strength and grout compressive strength, etc., on the failure patterns and the load-displacement curves were investigated in detail. Three failure modes of the rockbolt grouted system, namely (1) rockbolt-grout interfacial debonding, (2) complete grout cracking, and (3) a combining pattern of interfacial debonding and grout cracking were identified. The results indicate that there exists a critical bond strength, which controls these failure modes. With the increasing of the bond strength, the failure patterns change from the interfacial debonding to the grout cracking.
Study on grout cracking and interface debonding of rockbolt grouted system
Chang, Xu (author) / Wang, Guozhu (author) / Liang, Zhengzhao (author) / Yang, Jianhui (author) / Tang, Chunan (author)
Construction and Building Materials ; 135 ; 665-673
2017-01-08
9 pages
Article (Journal)
Electronic Resource
English
Study on grout cracking and interface debonding of rockbolt grouted system
| British Library Online Contents | 2017
Study on grout cracking and interface debonding of rockbolt grouted system
| Online Contents | 2017
Pullout Performances of Grouted Rockbolt Systems with Bond Defects
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Pullout Performances of Grouted Rockbolt Systems with Bond Defects
| British Library Online Contents | 2018
Pullout Performances of Grouted Rockbolt Systems with Bond Defects
| Online Contents | 2017