AStrutTie
AStrutTie is strut and tie model analysis/design software for structural concrete with D-region. D-region design and nine structural template designs are possible. (corbel, abutment/pier footing, bridge pier cap, frame corner,etc.) AStrutTie supports ACI318-14, AASHTO LRFD and EuroCode 2 specifications.
- Optimum Solution for Strut and Tie Model(Method) Approach
AStrutTie is a powerful and practical analysis/design software for concrete members with D-region(s). The most appropriate strut-tie models can be constructed by considering the principal stress flows and/or evolutionary structural optimization (ESO) results. A specialized solver capable of handling any types of internally/externally (in)determinate strut-tie models is associated. The strut-tie model provisions of ACI 318-14 (2014), AASHTO LRFD (2014), and EC2 (2004) are applied.
- Efficient Structural Modelings for Strut and Tie Model(Method) Design
For fast and efficient strut-tie model designs, multirole templates are provided for corbel (bracket), abutment footing, pier footing, bridge pier coping (pier cap), frame corner, anchorage zones with inclined and straight tendons, and deep beams with concentrated and distributed loads. The shapes of concrete members and truss models can also be generated by importing .dxf files. Advanced element sets representing truss mechanism, truss and arch mechanism, and fan action are provided.
- Systems for Automated Design Checks and Structural Design Report
AStrutTie provides various automated design checks regrading the conditions for rebar requirement and strength verification of struts and nodal zones. Visual verifications of strength conditions are possible, too. A structural design report is generated automatically, and design results are examined by previewing the report. The structural design report is printed as a *.rtf or *.xlsx file.
Features
- Ease of Use
- Intelligent graphical user interfaces
- Visualizations by using view option windows
- Metric(SI) units
- U.S customary units (Scheduled for 2017)
- Tabular and dialog inputs
- 2-D on-screen graphics
- Graphical display of applied loads, boundary conditions, and structural analysis results
- Visual and tabular verifications of strength conditions of struts and nodes
- 9 templates for typical D-regions and structural members
- Design checks on user interfaces
- Preview of structural design report
- Report output as Word (*.rtf) or Excel (*.xlsx) file
- Importation of *.dxf file for modeling of solid and truss structures
- Verified (in)determinate strut-tie models for templates
- Unconstrained solid and truss modelings for strut-tie model design
- Support Items of Templates
- Corbel (Bracket)
- Automatic Determination of Location of STM Node sub- jected to Applied Loads
- Abutment/Pier Footing
- Spread and Pile Footings bounded by Springs
- Automatic Conversion of Applied Loads to Pile Reactions
- Automatic Assignment of Soil/Pile Reactions to Spring Constants
- Automatic Construction of STM according to Pile Locations and Number of Pile
- Automatic Determination of Pile Locations by Inputing Number of Pile
- Bridge Pier Coping (pier cap)
- Automatic Construction of STM by Selecting Load Transfer Mechanism (Arch, Vertical Truss)
- Automatic Construction of STM according to Number of Concentrated Load Point
- Frame Corner
- Four Separate Templates according to Moment Types and Corner Shapes
- Four Basic Types of Strut-Tie Models recommended by EC2
- Anchorage Zone
- Automatic Construction of STM considering AASHTO LRFD's Bursting Force Location
- Tendon Layout, and Number of Anchor Plate
- Deep Beam with Concentrated Loads
- Three Types of FIB Strut-Tie Models according to Shear Span-to-Effective Depth Ratio (Arch, Vertical Truss, Combined)
- Automatic Construction of STM according to Number of Load Point, Symmetric/Asymmetric Load, and Symmetric /Asymmetric Geometrical Shape
- Continuous Beams with Distributed Loads
- Automatic Construction of STM resulting in Vertical and Horizontal Reinforcing Bars
- STM for Continuous Deep Beams
- Corbel (Bracket)
- Included Design Codes
- AASHTO LRFD (2014)
- ACI 318-14 (2014)
- EC 2 (2004)
- Items for Design Checks
- Strength Verification of Concrete Struts
- Required Areas of Steel Ties (Flexural Rebars, Shear Rebars, Supplementary Rebars)
- Strength Verification of Nodal Zones ·Anchorage of Rebars at Critical Nodal Zones
- Minimum Reinforcement Ratio for Serviceability
- Convenient Editing Tools for Truss Structure
- Versatile Editing Tools supplied by the Nine Templates
- User-based General Editing Tools (cut, copy, paste, delete, find, divide, offset, move, stretch, mirror, rotate)
- Object Osnap (End, Mid, Cross, Near, Perpendicular Point)
- Guidelines and Grid Points
- STM Constructed from Boundary Lines of Concrete Member
- Automatic Check of Object Overlaps ·Modeling of Structures by Dxf Import/Export
- Functions of Truss Solver
- Analysis of Internally/Externally Determinate/Indeterminate Truss Structures
- Inclined, Horizontal, and Vertical Restraints by Spring, Hinge, and Roller ·Determination of Required Areas and Forces of Struts and Ties by Iterative Technique
- Safety Evaluation of Existing Structural Members by Assigning Steel Tie Areas
- Calculation of Available Areas of Struts and Ties
- Determination of Average Principal Tensile Strain of Reinforcing Bars crossing Perpendicularly to Concrete Strut by Iterative Technique
- Automatic Transformation of Distributed Forces to Nodal Forces
- Functions of Plane Solid Solver
- Analysis of Plane Stress and Plane Strain Problems
- Inclined, Horizontal, and Vertical Restraints by Spring, Hinge, and Roller
- Optimized Mesh Generator according to Concrete Member Shape
- Automatic Transformation of Distributed Forces to Nodal Forces
- Calculation of Principal Stresses and Directions
- Relative Lengths and Colors of Principal Stresses along Principal Directions ( Stress Flow )
- Implementation of Evolutionary Structural Optimization Technique ( E. S. O )
References
- AStrutTie software web information
- AStrutTie online user manual
- Civil Engineering Software Database - AStrutTie