{{Tutorial
name = Joint pattern |
description = Learn how to apply joint pattern. |
keyword = joint; joint pattern |
program = SAP2000 |
version = V12.0.1 |
status = in progress |
id = ok}} |
If your mesh is fairly fine, and you are looking for To obtain the vertical loading on a slab, you can try the following as a workaround element which is modeled using a fairly fine mesh, users may implement a joint pattern through the following process:
For each loading patch, or set of patches that act together,
define a Joint Pattern:select Define > Joint Pattern to define a joint pattern, as shown in Figure 1:
Figure 1 - Name joint patterns
Select
thejoints that are contained
inwithin the patch or patches. Next,
andselect Assign > Joint Pattern,
and assign a constant āDā value equal tothen assign a dimensionless scale factor D, such as 1.0. This process is shown in Figure 2:
Figure 2 - Pattern data
Select the slab elements,
andthen select Assign > Area Loads > Surface Pressure
, andto assign
thepressure
to the top face(
acts downward) in pressure units (force/area)
in the appropriate Load Pattern (V11 Load Case)such that it acts downward on the top face, according to the appropriate load pattern. This menu is shown in Figure 3:
Figure 3 - Area surface pressure load
The pressure
actingon each element will be interpolated from the
values of theproduct between joint-pattern
, multiplied by the given value of pressure (values and the pressure assigned, which is 5.0 kN/m in
the abovethis example
). If only one element joint
in an elementhas a nonzero pressure, a quarter of the load will be applied.
TheLoad pressure
load multipliesis multiplied by
theelement tributary area
of the elements, so that you do not have to calculate nodal forces by hand.
See Also
- List of joint pattern tutorials
such that users need not manually calculate nodal forces.
Display joint pattern
To graphically display the joint-pattern assignment, select Display > Show Misc Assigns > Joints.
Select Display > Show Load Assign > Area Surface Pressure Values to display the area load assigned to each joint.
Metadata
Name: Joint-pattern first steps
Description: This tutorial provides an introduction to the assignment of joint patterns.
Program: SAP2000
Program Version: 12.1.0
Model ID: na