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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 }
ParameterDescription
n1 Hinge type identifier
<list> List of members associated the current hinge command

Notes

  1. Once HINGE PROPERTIES are specified (See "TR.37.7.5.1 User-Defined Hinge Property "), you can assign these to the members using the HINGE TYPE command.

    Note: Hinge properties must be defined prior to assigning them to members in the input file.

  2. 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. The HINGE 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 the HINGE TYPE command in the input.

  3. The HINGE IGNORE command can be used to ignore hinge formation in some members.

    Note: The ALL option should not be used with HINGE 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
Parent topic: TR.37.7.5 Define Hinge Property
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