UFC 4-023-03
25 January 2005
Table 3-1 Acceptability Criteria for Elements and Connections and Subsequent
Action for AP Model
Subsequent Action for
Structural Behavior
Acceptability Criteria
Violation of Criteria
For elements that can carry
moment after the peak moment is
reached: In Linear Static analysis,
insert an effective plastic hinge at
appropriate location and apply a
constant moment on both sides of
the hinge (Figure 3-9). For
Flexural Design StrengthA
Nonlinear Static and Dynamic
analysis, the model and software
(based on compactness,
Element Flexure
must automatically incorporate
bracing, amount and type of
nonlinear flexural response.
reinforcing steel, etc)
For elements that fail upon
reaching the flexural design
strength, remove the failed
element from model and
redistribute the loads per Section
3-2.4.3.
For elements that are controlled by
flexure, follow the procedure
Interaction Equations Using
outlined in Section 3-2.7.1. For
Element Combined Axial
Axial and Flexural Design
elements controlled by buckling,
and Flexure
StrengthsA
remove the failed element from
model and redistribute the loads
per Section 3-2.4.3.
Remove failed element from
A
model and redistribute the loads
Element Shear
Shear Design Strength
per Section 3-2.4.3.
Connection Design StrengthA
Connections
Remove connection.
Deformation Limits, defined
Remove failed element from
Deformation
for each material in Chapters
model and redistribute the loads
4 to 8.
per Section 3-2.4.3.
A
Values are calculated using the appropriate material specific design code, including
material over-strength factors Ω as appropriate, as discussed in Chapters 4 to 8.
3-16
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