Lecture-Plaxis-03(ppt文档).ppt

The Program and its ApplicationsPart IIIby Ari CohenTutorial 1 Continued:The Modeling the Settlement of a Circular Footing on Sand18.Select Output FileSelect phase to be viewedChoosing“incremental displacements”allows one to see the displacement per calculation step,helping visualize an eventual failure mechanism19.DeformationsSelect orientation of displacementDeformed mesh is displayed by default upon opening program20.StressesView effective stresses or total stresses(active pore pressure+effective stress)21.Viewing Tabular ResultsTable output can be viewed for specific areas of concern22.Flexible FootingInstead of prescribed displacement a load will be imposed on the soil yielding a displacement laterSave as under a different name23.Modify the GeometryChoose to create a beam element24.Modify the Boundary ConditionApply a traction to the boundary simulating the applied force on the footing25.Assign Materials for the FootingSelect“New”beam materialInput material properties as with soil layerBeam Material PropertiesDrag n drop footing material onto the beam element26.Assign Materials cont.27.Generate Mesh28.Initial ConditionsRegenerate initial stresses29.CalculationsName the phase30.Calculations cont.Apply a multiplier of 350*to the traction load AAccept default for parameters*note:(350)x(1kN/m2)x(p)(1)2 1200kNCheck that points are still selected for curves31.OutputDouble click the beam in the out put program to view bending moments or displacements in the beam32.Curves ProgramSelect new chart upon entering the program for the first time33.Generating a Load-Displacement CurveChoose“Displacement”Select point“A”assigned in the calculations phaseSelect Uy and check“Invert sign”for negative vertical displacement of footing centerChoose“Multiplier”Choose to plot the loading multiplier along the y-axis34.Curve OutputOnce generated,curve presentation can be altered using chart and curve settingsThank you for your time!