Product Overview
Roctopple
Block Toppling Model
Analyze 2D block or block-flexural toppling stability given the slope geometry, and the joint spacing, dip and strength. RocTopple employs the Block toppling method of Goodman and Bray (1976), a Limit Equilibrium method which takes into account toppling and sliding failure modes of each individual block.
Deterministic or Probabilistic Analysis
Calculate a factor of safety with deterministic analysis or the probability of failure for probabilistic models. You can model variability in geometry, point of force application, joint and bedding strength, water pressure, external loads, and supports by assigning statistical distributions to variables. Create histogram, cumulative, and scatter plots of statistical data.
Support & Loading
Implement bolts to anchor potentially unstable blocks. Apply external loads to your models in the form of line loads, distributed loads, seismic loads and water pressure.
Specifications
Analysis Options :
Duncan Fama solution for ground reaction curve
Carranza-Torres solution
Vrakas and Anagnostou solution
Lee and Pietruszczak solution
Barbosa solution
Vrakas (2016) solution
Plot long-term ground reaction curve (specify strength reduction factor)
Deterministic (safety factor) or probabilistic (probability of failure) analysis
Probabilistic Analysis :
Monte Carlo or Latin Hypercube simulation
Random or pseudo-random sampling
Random variables—all tunnel and rock parameters can be defined as random variables
Statistical distributions—normal, uniform, triangular, beta, exponential, lognormal, gamma
Histogram, cumulative, and scatter plots
User-defined plot variables
Best-fi t distribution and regression line
Highlight support failure on histogram and scatter plots
One-click export of charts to Excel
Rock Parameters :
Elastic properties: Young’s Modulus, Poisson’s Ratio
Strength properties: Mohr-Coulomb or Generalized Hoek-Brown
Equivalent Mohr-Coulomb parameters can be calculated from Hoek-Brown parameters (GSI, mi, intact UCS, D)
Built-in charts and tables help estimate suitable values of GSI, mi, intact UCS, and D
Peak and residual strength parameters for Generalized Hoek-Brown criterion
Support :
Pre-defined support types for rock bolts, steel sets, and shotcrete
Combine multiple support types (e.g., rock bolts and shotcrete)
Simple parametric analysis —add, change, or remove support with a few mouse clicks
User-defined support
Support installation—specify distance from face or tunnel convergence
Interactive positioning of support
Longitudinal deformation profile —built-in or user-defined function
Custom support option for each of the three support types
Steel set reinforcement database
Tunnel Parameters :
Tunnel radius
In-situ stress
Viewing Options :
Ground reaction and support reaction views
Tunnel section and plastic zone radius views
Customize display options
Export image files
Info Viewer summary of analysis results
Videos
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