Stability (related software)

Stability

Overview
Related Software

• BLOCK - Legacy software from 1989 that utilizes block theory has been applied to the planning and design of surface and underground excavations. Source code in FORTRAN and related reports can be downloaded from the earthquake engineering online archive maintained by University of California Berkeley. BLOCK: BASIC Programs for BLOCK Theory Shi, Gen-hua; Goodman, Richard E. Department of Civil Engineering, University of California, Berkeley, 1989, Block theory has been applied to the planning and design of surface and underground excavations. The object of this technology is to specify the critical joint blocks intersecting an excavation. It applies to rock engineering for for excavations in hard rock where the movement of predefined blocks precipitate failure. A series of Block Theory programs help to find the critical key blocks and possibility of failure in all types of excavations. These were developed along with the theories outlined in the book, "Block Theory and Its Application to Rock Engineering," by Richard E. Goodman and Gen-hua Shi, Prentice-Hall, 1985. The problem is limited in scope--to find the critical blocks created by intersections of discontinuities in a rock mass excavated along defined surfaces. Yet the problem is sufficiently difficult that a series of simplifying assumptions are adopted: (1) All joint surfaces are assumed to be perfectly planar. (2) Joint surfaces will be assumed to extend entirely through the volume of interests, that is, no discontinuities will terminate within the region of a key block. The implications are that all blocks are completely defined by preexisting joint surfaces so that no new cracking is entailed in the analysis of block movements. (3) Blocks defined by the system of joint faces are assumed to be rigid. This means that block deformation and distortion will not be introduced. The key-block problem is formulated entirely through geometry and topology. (4) Discontinuities and the excavation surfaces are assumed to be determined as input parameters. Block theory is developed on the basis of geometric information derived from structural geology and equilibrium calculations using simple statics. It is assumed that continuum mechanics is second in importance to the calculation and description of key blocks. Only block movement modes are to be considered. The suite of programs included in the program package are: (1) General Key Blocks, (2) Stereographic Projections, (3) Stability Analysis, and (4) Tunnels and Shafts.
• CAL - Educational program developed to support teaching and learning of structural analysis concepts and techniques. Originally developed at the University of California, Berkeley by Professor Edward L. Wilson in 1976. The program has been used worldwide at over 100 universities.
• Fin 3D - Static, eigenvalue, second order, and linear stability analysis of 3D frame structures.
• Midas/Civil - Integrated Solution System for Civil Structural Engineering. Features: unlimited number of nodes, elements and load combinations; construction sequence analysis; time dependent material properties to simulate creep and shrinkage; suspension and cable-stayed bridge analyses; moving load analysis; geometric non-linear analysis; heat of hydratation analysis.
• QUIKPORT - Program for analysis of portal frames. Includes elastic, elastic-plastic and rigorous minimum weight plastic design - all in the one program. It also has advanced 2nd order and stability methods.
• STAAD - STAAD is structural engineering software for 3D model generation, analysis and multi-material design. Capabilities for static, dynamic, or pushover analysis of bridges, containment structures, embedded structures (tunnels and culverts), pipe racks, steel, concrete, aluminum or timber buildings, transmission towers, stadiums or any other simple or complex structure.

  Contains the following modules:

  STAAD.Pro

  STAAD.beava - Bridge Engineering Automated Vehicle Application

  STAAD.beam - design of composite, noncomposite and partially composite steel beams

  STAAD.foundation - design of isolated footings, combined footings, strip footings, pile caps and mat foundations.

  STAAD.offshore - design of offshore structures

  OpenSTAAD - library of functions that can be accessed via the COM (Component Object Model) interface
• Truss 2000 - Software for the analysis of planar or spatial truss structures. Allows local elastic and instability testing of the single bar and the testing of the global stability of the whole structure, evaluating the loss of bearer capacity due to any geometrical or load imperfections.
• UTrAp - UTrAp is a software package developed for pour sequence analysis of curved, trapezoidal steel box girders. Single and dual girder systems with a constant radius of curvature can be analyzed with this program. The software consists of a Graphical User Interface (GUI) and an analysis module. The analysis module relies on the finite element method to compute the response of a three-dimensional bridge structure. Input data is supplied to the program through use of a GUI. The program can handle multiple analysis cases and has graphics capability to visualize the output. It also offers the capability of performing an eignevalue buckling analysis, and it allows for exporting results to Excel.
• Xcalcs - Online engineering calculation sheets for beams, plates, vessels, etc.