Cold-Formed Steel Stud Shear Wall System Seismic design

Main Content

  • Cold-formed Steel Stud Applicaton in NA
  • American Cold-formed Steel Stud Shear Wall System, Basic Structure and Design Method
  • Seismic Research and Design of Cold-formed Thin-wall Corrugated Composite Wall

Cold-formed Steel Stud Applicaton in NA

drive in steel racks

metal building

steel framing

Arena Crossing Apartments in Columbus ,OH. Showing all walls panlized,arrive for fast construction,complete load bearing system light steel,detail showing multi-story with openings,and socio-context of location and final nearing structural completion.

Highlights:

  • 7 stories above parking(210 units)
  • Design conversion from wood to LSF allowed developer to add 3 stories
  • Design-build structural by ClarkDietrich Building Systems
  • Fully panelized
  • Building footprint significantly lighter than conventional

American Cold-formed Steel Stud Shear Wall System, Basic Structure and Design Method

American seismic design code for cold-framing steel stud structure

AISI S400

AISI S400

IBC 2018

IBC 2018

ASCE 7

ASCE 7

Basic method for seismic design of American houses

Basic method for seismic design of American houses

Cold-formed steel shear wall system

wood panel shear wall system

wood panel shear wall system

flat steel panel shear wall system

flat steel panel shear wall system

X support steel shear wall system

X support steel shear wall system

ASCE 7

Table 12.2-1 design coefficients and factors for seismic force-resisting system

design coefficients and factors for seismic force-resisting system

Cold-formed steel shear wall system – Seismic energy dissipation principle

Seismic energy dissipation principle

Screw connection relative displacement to destruction

Relative displacement of the screw connection,deformation of the steel panel and material deformation

x support steel material crook and deformation

Panel shear wall construction

Panel shear wall construction

Panel shear wall design type – Type I and Type II

Type 1 shear wall

Type 1 shear wall:

Hold-downs at each end of each wall segment.Force transfer around openings.

Type 2 new shear wall

Type 2 new shear wall:

Hold-downs at ends of wall.Not designed for force transfer around openings.

Panel shear wall design steps

  • Calculate seismic design shear force
  • Decide the structural details of the panel shear wall system
  • Check and calculate the shear wall system design horizontal bearing capacity/shear force
  • Check and calculate the shear wall system bearing capacity against subversive – consider the super coefficient or expected strength(AISI S100 , AISI S400)
    – boundary studs
    – hold-down,bolted connections
  • Check and calculate the horizontal shear capacity of the anchorage connection at the bottom of the shear wall system – consider the super-strong coefficient or the expected strength
  • Check the maximum horizontal relative position between storey
Panel shear wall design steps

Shear wall system design horizontal bearing capacity / shear force (AISI S400)

Type 1 – Wood panel shear wall bearing capacity

Vn – Lookup method

Wood panel shear wall bearing capacity

Type 1 – Flat steel shear wall bearing capacity

Vn – Lookup method or calculation

Flat steel shear wall bearing capacity

Type 1 – Flat steel shear wall bearing capacity

Vn – Lookup method or calculation – effective strin method

Flat steel shear wall bearing capacity

Type 2 – Panelized shear wall bearing capacity

Vn – Reduction factor method

Type 2 shear force = Type 1 shear force * reduction factor

Panelized shear wall bearing capacity

Check and calculate the shear wall system bearing capacity against subversive – consider the super coefficient or expected strength(AISI S100 , AISI S400)

  • AISI S400 Calculated with expected strength  – Expected strength = 1.8 x Vn
  • Side column stud – pressed, pulled build-up member
  • Hold-down and Bolt tension
  • Bottom studs and bolts sheared
the shear wall system bearing capacity against subversive
By |2018-12-21T03:45:12+00:00December 18th, 2018|Industry News, News|

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