| A general 2-D and 3-D geotechnical/structural finite element code was developed for use in a virtual memory, mini-computer environment. The code is highly interactive within a versatile computer graphics framework, and includes full integration of preprocessing, analysis, and postprocessing.;To deal with general geotechnical problems, the analysis system includes capabilities for continuous construction and/or excavation sequences, variable in-situ stresses, multiple load cases, discontinuities, and limited nonlinear material property variations. Improved algorithms are incorporated to improve the accuracy of the incremental, nonlinear solutions. Detailed documentation is presented, as well as a comprehensive user's manual.;A variety of benchmark problems are solved to demonstrate the versatility of the code. Included are 2-D and 3-D construction of embankments, 2-D excavation of underground openings in rock, 3-D excavation of surface open pits, and 2-D and 3-D simulations of drilled shaft and grillage foundations under complex loading conditions. Computer graphics techniques are stressed to illustrate problem definition and result presentation. |
