VHM ANALYSIS
CAISSONVHM
Foundation Capacity under Combined Loading
Advanced suction caisson capacity analysis software for combined vertical, horizontal and moment (VHM) loading. Designed for offshore wind, oil & gas foundation design.
€2,475 per year, per user
TRUSTED BY LEADING COMPANIES WORLDWIDE
Ørsted
TotalEnergies
DEME
SPT
RINA
MULTICONSULT
Features
- ISO 19901-4 aligned
- Multiple soil models
- Installation analysis
- VHM failure envelopes
- Undrained & drained
- PDF report generation
VHM Envelope
Full 3D interaction surface generation for combined loading assessment
10X
Faster than manual calculations
Fast & Reliable
Foundation Capacity Analysis Software
OVERVIEW
ABOUT CAISSON VHM
Caisson VHM is a specialist tool for analysing the capacity of suction caisson foundations under combined vertical, horizontal and moment loading conditions.
About Caisson VHM
OVERVIEW
Caisson VHM performs capacity calculations for suction caisson foundations subjected to combined loading. The software models the interaction between vertical, horizontal and moment loads using advanced failure envelope methods. It supports both undrained and drained soil conditions and accounts for caisson geometry, embedment depth, and soil strength profiles
What is Caisson VHM?
PURPOSE
Caisson VHM is a design tool used in the offshore industry to evaluate suction caisson foundation capacity. It generates VHM failure envelopes that define the allowable load combinations for a given caisson geometry and soil profile. Engineers use it to verify foundation adequacy under environmental and operational loading conditions
CAPABILITIES
KEY FEATURES
VHM Failure Envelope Generation
Automatically generate 3D failure envelopes showing interaction between vertical, horizontal and moment capacities.
Advanced Soil Modelling
Support for linearly increasing undrained shear strength, drained soil parameters, and custom soil profiles.
Automation Modes
Automated parametric studies and batch processing for efficient sensitivity analyses across multiple load cases.
Embedded Skirt Profiles
Model complex caisson geometries including stiffened skirts, internal compartments, and variable wall thickness.
Flap Analysis
Evaluate flap mechanism contributions to lateral and moment capacity for detailed foundation assessment.
Sensitivity & Robustness
Built-in sensitivity analysis tools to evaluate the impact of key parameters on foundation capacity.
3D Failure Analysis Results
Visualise complete VHM interaction diagrams with cross-sections at specified load levels.
Databases
Store and manage soil data, caisson geometries, and analysis configurations in organised databases.
Cross Platform
Cloud-based platform accessible from any modern browser on Windows, Mac, or Linux.
TECHNICAL DETAILS
CORE FUNCTIONALITY
1. Primary Goal
Determine the ultimate capacity of suction caisson foundations under combined VHM loading. Calculate failure envelopes for design verification and optimise caisson dimensions.
- Generate VHM failure envelopes for design verification
- Optimise caisson geometry for given loading conditions
- Evaluate installation feasibility and required suction pressures
2. Analysis
Run advanced capacity calculations using multiple soil models. The analysis engine handles undrained and drained conditions with depth-dependent strength profiles.
- Multiple bearing capacity methods
- Parametric studies and sensitivity analysis
- Automated batch processing for efficiency
3. Output
Generate comprehensive results including VHM interaction diagrams, load-displacement curves, and detailed PDF reports ready for client submission.
- Interactive VHM failure envelope plots
- Exportable charts and data tables
- Professional PDF report generation
MULTIPLE SOIL MODELS
- Linearly increasing Su
- Constant undrained shear strength
- Drained (φ′, c′)
- Multi-layer profiles
- Custom Su/σ′v ratios
- Remoulded strength
CALCULATION TYPES
- Calculation Types
- Uniaxial horizontal capacity (H₀)
- Uniaxial moment capacity (M₀)
- VHM failure envelope
- Installation penetration resistance
- Required suction pressure
- Plug stability check
- 2D interaction diagrams (V-H, V-M, H-M)
ANALYSIS MODE
- Single load case
- Parametric sweep
- Batch processing
- Sensitivity analysis
- Load inclination sweep
- Embedment ratio optimisation
METHODS & STANDARDS
- ISO 19901-4 aligned
- Upper bound plasticity
- Failure envelope interpolation
- API RP 2GEO compatible
- DNV-RP-C212 methods
OUTPUT & REPORTING
- 3D VHM interaction surface
- 2D cross-section plots
- Load-displacement curves
- Tabulated capacity data
- PDF report generation
- CSV / Excel export
CUSTOMISATION?
If you need something custom let us know ...
Software as a Service
SYSTEM & INTERFACE
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Architecture
Modular analysis framework with configurable calculation methods and soil models.
Input / Output
Structured data input with comprehensive results and PDF reports.
Modes
Single analysis, parametric study and batch processing modes.
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Modes
Single analysis, parametric study, and batch processing modes.
Cross Platform
Browser-based interface accessible from any modern device.
PRODUCT PREVIEW
INSIDE CAISSON VHM
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800+ Document pages
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Bespoke Templates
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Excel Tools
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Onboarding Support
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PRODUCT PREVIEW
DOCS & TEMPLATES
Use our bespoke templates, Excel files and over 800+ documentation and best practices. And as always, here to help and assist to get you started with Caisson VHM.
800+ Document pages
Best practices, technical guides, and reference manuals curated by industry experts
Bespoke Templates
Ready-to-use project templates to standardise your workflow and save setup time.
Excel Tools
Pre-built Excel files for data preparation, parameter studies, and result post-processing.
Onboarding Support
We’re always here to help and assist you getting started with Caisson VHM.
TRUSTED BY ENGINEERS
WHAT ENGINEERS SAY ABOUT CAISSON VHM
Use our bespoke templates, Excel files and over 800+ documentation and best practices. And as always, here to help and assist to get you started with Caisson VHM.
"This software has transformed how we approach offshore foundation design. The accuracy and speed are unmatched."
Oene-Jeljer Dijkstra
Geotechnical Engineer Manager
DEME / SPT Offshore
"We've reduced our analysis turnaround from days to hours. The ISO compliance gives us confidence in every report."
Hank
Senior Geotechnical Manager
MatDan
"We used Caisson for many years and it helps us with (rapid) tender assessments. New interface gives our engineers speed."
Oene-Jeljer Dijkstra
Geotechnical Engineer Manager
DEME / SPT Offshore
FAQ
FREQUENTLY ASKED QUESTIONS
If you have more questions please give us a buzz.
What is VHM analysis for suction caissons?
VHM analysis evaluates the combined capacity of suction caisson foundations under Vertical (V), Horizontal (H), and Moment (M) loading. It defines the failure envelope — the boundary of safe load combinations — essential for offshore foundation design.
Which soil models are supported?
Caisson VHM supports linearly increasing Su, constant undrained shear strength, drained soil parameters (φ, c'), multi-layer profiles, custom Su/s'v ratios, and remoulded strength profiles for installation analysis.
How are VHM failure envelopes generated?
The software uses upper bound plasticity methods and failure envelope interpolation techniques, fully aligned with ISO 19901-4, API RP 2GEO, and DNV-RP-C212 standards to generate accurate 3D interaction surfaces.
Is Caisson VHM aligned with industry standards?
Yes. Caisson VHM is designed to comply with ISO 19901-4, API RP 2GEO, and DNV-RP-C212 standards, making it suitable for formal foundation design verification and client submissions.
Can I run parametric studies?
Yes. Caisson VHM is designed to comply with ISO 19901-4, API RP 2GEO, and DNV-RP-C212 standards, making it suitable for formal foundation design verification and client submissions.
What output formats are available?
Outputs include 3D VHM interaction surfaces, 2D cross-section plots, load-displacement curves, tabulated capacity data, professional PDF reports, and CSV/Excel exports.
Do I need to install anything?
No installation required. Caisson VHM is fully cloud-based and accessible from any modern browser on Windows, Mac, or Linux.
FLEXIBLE PLANS
Versatile Pricing
Tier 1: Single User
For Individual Engineers
€2,475
per year, per user
- 1 Software license
- All modules included
- PDF Reports
- Email support
- Cloud storage
Tier 2: Multi User
For Your Team
Get Quote
for your team
- Multiple licenses
- Floating / Fixed seats
- Including annual support
- Including annual maintenance
- Including annual updates
Tier 3: Enterprise
For Individual Engineers
Bespoke
tailored pricing
- 1 Software license
- All modules included
- PDF Reports
- Email support
- Cloud storage
Ready to Streamline
Your Monopile Workflow?
Get in touch for a personalised demo or quote.
Professional geotechnical engineering software built for the offshore industry.
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