introduction to nonlinear time history analysis using...

Introduction to Nonlinear Time History

Analysis using Perform 3D

Organized by: In collaboration

with:

Supported by:

Shabir Talpur2

PBD Guidelines

PEER 2010/05, “Tall Building Initiative,

Guidelines for Performance Based Seismic

Design of Tall Buildings”

PEER/ATC 72-1, “Modeling and

Acceptance Criteria for Seismic Design and

Analysis of Tall Buildings”

ASCE/SEI 41-13, “Seismic Evaluation and

Retrofit of Existing Buildings”

LATBSDC 2014, “An Alternative Procedure

for Seismic Analysis and Design of Tall

Buildings Located in the Los Angeles Region”

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Content

• Basic Concepts Related To Model Geometry

• Basic Force Deformation Relationship

• Beam Nonlinear Modeling

• Shear Wall Nonlinear Modeling

• Strength Sections and limit states

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Basic Geometry Concepts

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Basic Force Deformation Relationship

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Beam Nonlinear Modeling

6

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Beam Nonlinear Model

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Rotation Hinge

DU = DL/1.02

FY

FU

= 1

.13

FY

DL = a from ASCE 41-13

DR = 1.1 DL

DX

FR =

0.1

76 F

UF

D

Conventional reinforced beam

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Beam Nonlinear Model

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Energy Dissipation

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Energy Dissipation Factors

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Shear Wall Nonlinear Modeling

12

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Shear Wall Fiber Cross Section

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Concrete Material Stress Strain

0

20

40

60

80

100

120

0 0.002 0.004 0.006 0.008 0.01 0.012 0.014 0.016 0.018 0.02

Stre

ss(N

/mm

2)

Strain

Concrete Material Stress Strain

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Steel Material Stress Strain

-800

-600

-400

-200

0

200

400

600

800

-0.15 -0.1 -0.05 0 0.05 0.1 0.15

Stre

ss(N

/mm

2)

Strain

Rebar Strain Stress

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Shear Wall Fiber Cross Section

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Strength Sections Limit States

17

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Strength Section

• Strength Sections Have a Strength Capacity

• Types

• Moment Strength Section

• Shear Force Strength Section

• Axial Force Strength Section

• P-M2-M3 Strength Section

• V2-V3 Strength Section

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Strength Section

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Limit States

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