پاورپوینت کامل Behavior Modeling and Design 160 اسلاید در PowerPoint

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پاورپوینت کامل Behavior Modeling and Design 160 اسلاید در PowerPoint

اسلاید ۴: Shear Wall or Column

اسلاید ۵: Shear Wall or FrameShear WallFrameShear Wall or Frame

اسلاید ۶: Shear Wall and Frame Behavior

اسلاید ۷: Shear Wall and Truss Behavior

اسلاید ۸: Shear Wall and Frame Shear Wall BehaviorFrame Behavior

اسلاید ۹: Shear Wall and Frame Interaction

اسلاید ۱۰: A-1 A-2A-3B-4B-1 B-2B-3B-4Frame and Frame-Shear Wall

اسلاید ۱۱: Shear Wall and Frame InteractionFrames DeformPredominantly in a shear modeSource of lateral resistance is the rigidity of beam-column/slab jointsShear Wall DeformEssentially in bending modeShear deformations are rarely significantOnly very low shear walls with H/W ratio <1 fail in shearBehave mostly like a slender cantileverDesigned to resist the combined effect of axial, bending and shear

اسلاید ۱۲: The Basic Behavior of Shear Walls, Frames and Shear Wall-Frames

اسلاید ۱۳: For each 10, 20 and 30 story buildingsOnly Shear Wall ( Total 3 Cases )Only Frame ( Total 3 Cases )Only Shear + Frame ( Total 3 Cases )Case Studies: Shear Wall–Frame InteractionTotal 3×3 = 9 Cases

اسلاید ۱۴: ۱۰ Story WallD = 26.73 cmWall Thickness = 15 cmCase 1: Shear Wall–Frame Interaction

اسلاید ۱۵: D = 15.97 cm10 Story FrameBeam Section = 60 cm x 30 cmColumn Section = 50 cm x 50 cmCase 2: Shear Wall–Frame Interaction

اسلاید ۱۶: ۱۰ Story Wall and FrameD = 5.14 cmWall Thickness = 15 cmBeam Section = 60 cm x 30 cmColumn Section = 50 cm x 50 cmCase 3: Shear Wall–Frame Interaction

اسلاید ۱۷: ۲۰ Story WallD = 158.18 cmWall Thickness = 20 cmCase 4: Shear Wall–Frame Interaction

اسلاید ۱۸: ۲۰ Story FrameD = 27.35 cmBeam Section = 60 cm x 30 cmColumn Section = 75 cm x 75 cmCase 5: Shear Wall–Frame Interaction

اسلاید ۱۹: ۲۰ Story Wall and FrameD = 12.66 cmWall Thickness = 20 cmBeam Section = 60 cm x 30 cmColumn Section = 75 cm x 75 cmCase 6: Shear Wall–Frame Interaction

اسلاید ۲۰: ۳۰ Story WallD = 355.04 cmWall Thickness = 30 cmCase 7: Shear Wall–Frame Interaction

اسلاید ۲۱: ۳۰ Story FrameD = 40.79 cmBeam Section = 60 cm x 30 cmColumn Section = 100 cm x 100 cmCase 8: Shear Wall–Frame Interaction

اسلاید ۲۲: ۳۰ Story Wall and FrameD = 20.87 cmWall Thickness = 30 cmBeam Section = 60 cm x 30 cmColumn Section = 100 cm x 100 cmCase 9: Shear Wall–Frame Interaction

اسلاید ۲۳: Shear Wall–Frame Interaction

اسلاید ۲۴: Shear Wall–Frame Interaction

اسلاید ۲۵: Shear Wall–Frame Interaction

اسلاید ۲۶: Shear Wall–Frame Interaction

اسلاید ۲۷: Shear Wall–Frame Interaction = Force / StiffnessStiffness = Force / DStiffness Frame = 200 / 40.79 = 04.90Stiffness Wall = 200 / 355.04 = 00.56Stiffness Frame + Wall = 200 / 12.66 = 15.79Stiffness Frame +Stiffness Wall = 4.90 + 0.56 = 5.46Stiffness Frame +Stiffness Wall Stiffness Frame + Wall For the cases considered here (30 story example): Force=200 Deflection = 40.79

اسلاید ۲۸: Shear Wall Moments for the Coupled SystemChange in Shear Wall Moments

اسلاید ۲۹: Coupling Element Moments

اسلاید ۳۰: Shear Wall-Frame Load Distribution Curves

اسلاید ۳۱: Deflected Shape of Shear Wall-Frame Interactive SystemKhan-Sbarounis Curves

اسلاید ۳۲: Comparison of Shears and Moments in the Core wall4 Different Layouts for Same Function RequirementsType AType BType CType D

اسلاید ۳۳: Typical Floor Plan- Structure Type AComparison of… : Type A

اسلاید ۳۴: Typical Floor Plan- Structure Type BComparison of… : Type B

اسلاید ۳۵: Typical Floor Plan- Structure Type CComparison of… : Type C

اسلاید ۳۶: Typical Floor Plan- Structure Type DComparison of… : Type D

اسلاید ۳۷: Comparison of Shears and Moments in the Core wall

اسلاید ۳۸: Wall-Frame Interaction: Key ConclusionsThe shear wall deform predominantly in bending modeThe common assumptions to neglect the frames in lateral load resistance can lead to grossly erroneous resultsConsideration of shear wall-frame interaction leads to a more economic designThe shear walls should be designed to resist the combined effect of axial, bending and shearLayout of the shear walls in plan in very important, both for vertical as well as gravity load

اسلاید ۳۹: Basic Types of Shear Walls

اسلاید ۴۰: Basic Types of Shear Walls

اسلاید ۴۱: Basic Modeling Options for Shear Walls

اسلاید ۴۲: Modeling of Walls using 1D ElementsLt x hLtH2H1Simple beam elementsLtBeam elements with rigid endsBeam elements in “Truss Model”

اسلاید ۴۳: Frame Model for Planer WallsRigid ZonesSpecially Suitable when H/B is more than 5The shear wall is represented by a column of section “B x t”The beam up to the edge of the wall is modeled as normal beamThe “column” is connected to beam by rigid zones or very large cross-sectionBHt

اسلاید ۴۴: Frame Models for Cellular WallsDifficult to extend the concept to Non-planer wallsCore Wall must be converted to “equivalent” column and appropriate “rigid” elementsCan be used in 2D analysis but more complicated for 3D analysisAfter the core wall is converted to planer wall, the simplified procedure cab used for modeling BHtBH2tt

اسلاید ۴۵: Modeling Walls using 2D ElementsWalls are subjected to in-plane deformations so 2D elements that have transnational DOF need to be usedA coarse mesh can be used to capture the overall stiffness and deformation of the wall A fine mesh should be used to capture in-plane bending or curvatureGeneral Shell Element or Membrane Elements can be used to model Shear Walls

اسلاید ۴۶: Modeling Walls Using MembraneNodes:4DOFs:2 DOFs /Node Ux and Uy2-TranslationDimension:2 dimension elementShape:Regular / IrregularProperties:Modulus of Elasticity(E),Poisson ratio(v), Thickness( t )This “Incomplete” Panel or Membrane Element does not connect with Beams completely and rotation DOF of beams and the ends are “Orphaned” The Incomplete Membrane Element

اسلاید ۴۷: Modeling Walls using Shell ElementsNodes:4DOFs:3 DOFs /Node Ux and Uy and Rz2 Translation, 1 rotationDimension:2 dimension elementShape:Regular / IrregularProperties:Modulus of Elasticity(E),Poisson ratio(v), Thickness( t )The Complete Membrane Element

اسلاید ۴۸: Using Incomplete Membrane ElementsMultiple elements greater accuracy in determination of stress distribution and allow easy modeling of openingsUsing Incomplete Membrane only(No Moment continuity with Beams)Using with Beams and or Columns are Required(Full Moment continuity with Beams and Columns)

اسلاید ۴۹: Using Complete Membrane ElementsMultiple elements greater accuracy in determination of stress distribution and allow easy modeling of openingsUsing Complete Membrane only(Moment continuity with Beams automatically provided)Using with Beams, Columns is NOT Required(Full Moment continuity with Beams and Columns)

اسلاید ۵۰: Connecting Walls to SlabIn general the mesh in the slab should match with mesh in the wall to establish connectionSome software automatically establishes connectivity by using constraints or “Zipper” elements“Zipper”

اسلاید ۵۱: Using Trusses to Model Shear WallsThe behavior of shear walls can be closely approximated by truss models:The vertical elements provide the axial-flexural resistanceThe diagonal elements provide the shear resistanceTruss models are derived from the “strut-tie” concepts This model represents the “cracked” state of the wall where all tension is taken by ties and compression by concrete

اسلاید ۵۲: ۲۵۱۰Truss Model for Shear WallsComparing Deformation and Deflections of Shell Model with Truss Model

اسلاید ۵۳: Truss Model for Shear Walls2510Comparing Deformation and Deflections of Shell Model with Truss Model

اسلاید ۵۴: ۲۵۱۰Truss Models for Shear WallsComparing Axial Stress and Axial Force Patterns

اسلاید ۵۵: ۲۵۱۰Truss Models for Shear WallsUniaxialBiaxial

اسلاید ۵۶: How to Construct Truss ModelsFor the purpose of analysis, assume the main truss layout based on wall width and floor levelsInitial memb