Numerical Simulation of In-Situ Direct Shear Test and Damage Failure Mechanism Study of Concrete-Bedrock Cementation Surface
Hexin Ye, Jinlin Huang, Jianwei Zhang, Yu Lai, Kelei Cao, Yong Wang, Wenxuan Wang
TL;DR
This study uses simulations to understand how concrete and rock interfaces in dams behave under stress, revealing failure patterns and improving dam design.
Contribution
A refined 3D simulation model for concrete-rock bonding interfaces is developed and validated with in-situ test data.
Findings
Shear stress-shear displacement curves show peak strengths between 1.074 MPa and 2.073 MPa with 8.48% maximum error.
Three failure modes are identified: bonding interface failure, mixed shear failure, and rock failure.
Higher normal stress increases shear fracture area and smoothness along the bonding interface.
Abstract
Owing to the insufficient understanding of the mechanical properties and damage mechanisms of concrete-rock bonding interfaces in dam foundations, this study establishes a refined three-dimensional simulation model for direct shear tests of concrete-rock bonding interfaces based on in-situ direct shear tests conducted at a reservoir. The damage evolution process and failure mechanisms of the concrete-rock interface under different loading conditions are investigated. The results indicate that under varying normal stresses, the shear stress-shear displacement curve exhibits an initial increase followed by a gradual decrease, with peak shear strength ranging from 1.074 MPa to 2.073 MPa and a maximum error of 8.48%, meeting engineering requirements. The damage evolution process of the concrete-rock interface under different normal forces was simulated and compared with in-situ direct shear…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 22
Figure 23
Figure 24
Figure 25
Figure 26
Figure 27
Figure 28Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsRock Mechanics and Modeling · Dam Engineering and Safety · Geotechnical Engineering and Analysis