Statistical-Analysis-of-Rockfalls
  • ALREADY OWN?

MINIMUM
REQUIREMENTS

  • XP/Vista/Win7/Win8 (32 and 64 bit)
  • 10 GB hard disk space
  • 2 GB memory (RAM)

SUGGESTED REQUIREMENTS

  • Win7/Win8 (32 and 64 bit)
  • 20 GB hard disk space
  • 4 GB memory (RAM)

Loading

version 3.0

Settle3D allows you to apply vertically oriented distributed loads to a ground surface in order to model soil settlement due to foundation loads, embankments, fills, etc. The loads can be of any shape, uniform or variable magnitude, flexible or rigid, applied at any depth and can be staged (i.e. applied at different times, sequences or load increments).

 


  • Circular Load
  • Rectangular Load
  • Polygonal Load
  • Embankment Load
  • Conical Load
  • Preload
  • Excavation
  • Rigid / Flexible
  • Load Staging
  • Load Editing
  •  

     

     


     

     

    Loading: Circular Loads

    A circular load can be applied with the Add Circular Load option. Simply enter the circle radius and load magnitude in the Define Load dialog, enter the coordinates of the circle center in the Plan View, and the load will be added to the model.

    Circular load and settlement contours in 3D view



    Load properties for circular load

    [Settle3d_Loading2_GALLERY]

     

     

     


     

     

    Loading: Rectangular Loads

    A rectangular load can be applied with the Add Rectangular Load option. Enter the length, width and load magnitude in the Define Load dialog, enter the coordinates of the rectangle center in the Plan View, and the load will be added to the model.

    Rectangular load and settlement contours in 3D view



    Load properties for rectangular load


    For a rectangular load, the magnitude can be uniform or variable over the area of the load. To define a variable load magnitude, select the variable checkbox in the Define Load dialog, and you will see the following dialog, which allows you to define the load magnitude at each vertex of the rectangle.

    Defining variable load magnitude for a rectangular load



    For example, using variable loading you could easily model a rectangular ramp as shown in the following figure.

    Rectangular load with variable magnitude

     

     

     


     

     

    Loading: Polygonal Loads

    Loads of any two-dimensional shape can be defined with the Add Polygonal Load option. Use the mouse or keyboard to enter the polygon coordinates in the Plan View, enter the load properties in the Define Load dialog, and the load will be added to the model.

    Polygonal loads in 3D View

     

    [Settle3d_Loading8_GALLERY]

     

    Load properties for polygonal load


    For a polygonal load, the magnitude can be uniform or variable over the area of the load. To define a variable load magnitude, select the variable checkbox in the Define Load dialog, and you will be able to define the load magnitude at each vertex of the polygon, in the following dialog.

    Defining variable load magnitude for a polygonal load

    [Settle3d_Loading10_GALLERY]

     

     

     


     

     

     

    Loading: Embankment Loads

    Settle3D provides a specialized embankment designer, which lets you easily define an embankment load. Embankments are defined by a 2-dimensional cross-section, but represent 3-dimensional loads, because the embankments have a finite length, with user-defined end angles, and can be placed at any orientation with respect to other loads.

    Embankment load in 3D view

     

    Embankments can have multiple layers with user-defined staging sequence. Embankment properties are defined in the Embankment Designer dialog shown below.

    Definition of embankment cross-section parameters


    Embankment designer dialog


    For more complex embankment staging, you can increase or decrease the width of embankment layers or remove layers, by selecting the Advanced button and entering information in the following dialog.

    Advanced embankment staging dialog

     

     

     


     


    Loading: Conical Loads

    A conical load can be applied with the Add Conical Load option. The cone geometry is defined by entering the height and base radius or side angle. The cone can be truncated at any height, and geometry can be staged (e.g. increase or decrease the height, radius or side angle at different stages).

    Conical load in 3D view


    Conical load input parameters

    [Settle3d_Loading16_GALLERY]


    Truncated conical load

     

     

     


     


    Loading: Pre-Loads

    The Pre-Load option uses a back-analysis computation to determine the fill height required to achieve a specified settlement at a given stage. You can define installation and removal stages for the pre-load, and the measurement stage and reference stage for the required settlement.

    Pre-load properties dialog


    A pre-load can be a general polygonal load. A point query is automatically created at the center of the pre-load, and results of the back analysis are displayed in the Plan View as shown below.

    Results of pre-load fill height back analysis

    [Settle3d_Loading19_GALLERY]


    The pre-load fill height can be directly defined without using the back analysis option, by turning off the Calculate Height from Settlement checkbox.

    User-defined pre-load fill height

    [Settle3d_Loading20_GALLERY]

     

     

     


     

     

    Loading: Excavation

    Excavations can be defined with the Add Excavation option. An excavation is defined as a polygon in the Plan View, and represents the removal of material to a specified depth. Loading can be applied within excavations, and both loading and excavation (depth) can be staged.

    It is important to note that excavations in Settle3D are only intended to model the unloading effect of the removed material. The true 3-dimensional stress, displacement and groundwater distribution due to excavation is NOT computed.

    Rectangular excavation in 3D view


    Load applied within excavation


    The main purpose of defining an excavation in Settle3D is to accurately model the net loading at some depth below ground surface within an excavated area.

    Excavation properties

    [Settle3d_Loading23_GALLERY]

     

     

     


     

     

    Loading: Flexible or Rigid

    For circular, rectangular or polygonal loads, you can specify the Load Type as either flexible or rigid.

     


  • A Flexible load implies that the stress distribution on the ground immediately beneath the load is equal to the loading stress distribution.
  • A Rigid load implies that the displacement immediately beneath the load remains planar. The stress distribution immediately beneath the load is not equal to the loading stress distribution, due to the rigid displacement constraint.
  • Power Curve

  • Flexible Load Type


    Flexible and rigid load magnitudes can be defined as a pressure. Rigid loading can also be defined by a vertical force and two moments, as shown below.

    Rigid Load Type


    For computational reasons, rigid loading cannot be used in conjunction with time-dependent consolidation. Rigid loads can only be used to compute immediate elastic settlement, or long-term (infinite time) consolidation.

    The difference in settlement between flexible and rigid loading is illustrated below, for a uniform rectangular load.

    Settlement under uniform flexible load


    Settlement under uniform rigid load


    Note: embankment loads, conical loads and preloads are always assumed to be flexible; they cannot be defined as rigid.

     

     

     


     


    Loading: Load Staging

    A Settle3D analysis can be performed using multiple stages. Staging represents the sequence in which you would like to define and analyze your model. For example:

     


  • Loads can be applied at any stage
  • Load magnitudes can be applied in user-defined increments
  • Load depth can be changed at different stages
  • For time-dependent modeling, stages can represent different times

  • In the simplest case, you can select the installation stage of a load, as shown below.

    Choosing the installation stage of a load


    For more advanced staging requirements, select the advanced staging checkbox, and you will be able to define a load factor and depth for each stage, as shown below. The load factor is applied to the load magnitude, and allows you to increase or decrease the load magnitude at any stage.

    Advanced load staging options

    [Settle3d_Loading29_GALLERY]

     

     

     


     


    Loading: Load Editing

    After adding a load to a model, you can easily edit the load properties (magnitude, staging information, depth) or coordinates (location, size, orientation). This allows you to quickly perform parametric analysis of different loading scenarios. Editing options are available through the menu, toolbar or convenient right-click shortcuts as shown in the following figures.

    Right-click editing options for polygonal load


    Right-click editing options for vertices of polygonal load


    Right-click load editing options in 3D view

    [Settle3d_Loading32_GALLERY]

     

     

     


      

     

     

    Loading: Display Properties

    Load display properties can be customized. For example, you can customize the colours used to display each load, and you can define the apparent load height in the 3D view.

    Load display properties can be customized