TR.37.7.5.2 Assignment of Hinge Property to the Members
This command is used to define the method by which the plastic hinges are formed. If no assignment of hinge property is done, the program will assign built-in FEMA 356 hinge property to the members.
HINGE { TYPE n1 | FEMA | IGNORE } { MEMBER <list> | ALL }
Parameter | Definition |
---|---|
n1 | Hinge type identifier |
<list> | List of members associated the current hinge command |
Notes
-
Once
HINGE PROPERTIES
are specified (SeeTR.37.7.5.1 User-Defined Hinge Property
), you can assign these to the members using theHINGE TYPE
command.Note: Hinge properties must be defined prior to assigning them to members in the input file. -
If a user-defined hinge property (i.e., the
HINGE TYPE
command) is assigned to some members, the program will consider hinge formation in these members only. TheHINGE FEMA
hinge property must be assigned to other members. Thus, you must take care to assign hinge property to all members if hinge formation is to be considered in all members.In this case, the
HINGE FEMA
command must follow after theHINGE TYPE
command in the input. -
The
HINGE IGNORE
command can be used to ignore hinge formation in some members.Note: TheALL
option should not be used withHINGE IGNORE
as this will prevent a successful pushover analysis.
Example
DEFINE PUSHOVER DATA
HINGE PROPERTY MOMENT
TYPE 1
A 0.0 0.0 B 1.0 1.0 C 10.0 1.2 D 10.0 0.6 E 12.0 0.6 YM 3325 YR 0.00899
IO 1.001 LS 6.0 CP 8.0
…
HINGE IGNORE MEMBER 16
HINGE TYPE 1 MEMBER 1 3 17
HINGE FEMA MEMBER 2 4 to 15 18 to 20
…
END PUSHOVER DATA