Generating Pressure Loads

 

Advance Design provides an automatic pressure generator that generates ground pressure and hydrostatic pressure on planar elements.

 

 

How to access the command

Use these methods to access the command:

 

• Fom the Menu: select Generate > Load > Pressure.

• From the Ribbon, navigate to the Objects tab > Pressure on Selection panel.

 

 

How to automatically generate liquid pressure

This function generates internal or external pressure loads on one or several planar elements.

 

Automatic generation of liquid pressure

 

 

To define the liquid load pressure follow these steps:

 

1. Select one or several planar elements.

 

Before generating the pressure loads, verify that the local axes of the planar elements are oriented in the same coordinate system, to obtain a correct loading.

1. From the main menu: select Generate > Load > Pressure. The Pressure generator dialog box appears.
2. Select the Liquid tab.
3. Define the pressure properties:

• Specify the vertical axis of the model: X, Y or Z.

• In the Ground-water level category, enter values to specify the inferior and superior levels of the liquid (in m).

• In the Liquid density field, enter a value for the liquid density.

• Specify the pressure type by selecting internal or external.

• From the Load case drop-down list select the load case in which to place the pressure loads or select New to create a new case.

1. Click OK to apply.
2. The pressure loads are automatically generated on the selected planar elements.

 

When a new load case for the pressure loads is created, a Live Loads family will be automatically created in the Project Browser, along with a Pressure load case containing the pressure loads.

 

Pressure load case displayed in the Project Browser

 

 

How to automatically generate soil pressure

This function generates internal or external pressure loads on one or several planar elements.

 

Automatic generation of soil pressure

 

 

To define the soil load pressure follow these steps:

1. Select one or several planar elements.

 

Before generating the pressure loads, verify that the local axes of the planar elements are oriented in the same coordinate system, to obtain a correct loading.

 

1. From the main menu: select Generate > Load > Pressure. The Pressure generator dialog box appears.
2. Select the Soil tab.
3. Click Add to insert a soil layer and define the soil properties.
4. Select the pressure direction: internal or external.
5. From the Load case drop-down list select the load case in which to place the pressure loads or select New to create a new case.
6. In the Upper level altitude field, define a value for the altitude of the current layer's upper level.
7. If soil Zones were defined in the Used soils dialog, they will be available for selection in this drop-down list.
8. In the Soil layers table you can define the soil layer properties:

• K: The active stress.

• K': The mediated value of all the active stresses from the soil layers above the one calculated.

• Gamma: The weight density of retained ground.

• Delta: The angle of shearing resistance between ground and wall.

1. Click OK to apply.
2. The pressure loads are automatically generated on the selected planar elements.

 

When a new load case for the pressure loads is created, a Dead Loads family will be automatically created in the Project Browser, along with a Pressure load case containing the pressure loads.

 

Pressure load case displayed in the Project Browser

 

Related Topics

• Creating Load Case Families

• Creating Load Cases

• Creating Planar Elements

• How to automatically generate the water pressure on the walls of a pool

• How to automatically design the soil pressure over a wall