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Composite Section

A nested class within Section used to create composite sections.

Composite PSC I-Section

Constructor

Section.Composite.PSCI(Name='', Symm=True, Joint=[0,0,0,0,0,0,0,0,0], Bc=0, tc=0, Hh=0, H1=0, HL1=0, HL2=0, HL21=0, HL22=0, HL3=0, HL4=0, HL41=0, HL42=0, HL5=0, BL1=0, BL2=0, BL21=0, BL22=0, BL4=0, BL41=0, BL42=0, HR1=0, HR2=0, HR21=0, HR22=0, HR3=0, HR4=0, HR41=0, HR42=0, HR5=0, BR1=0, BR2=0, BR21=0, BR22=0, BR4=0, BR41=0, BR42=0, EgdEsb=0, DgdDsb=0, Pgd=0, Psb=0, TgdTsb=0, MultiModulus=False, CreepEratio=0, ShrinkEratio=0, Offset:Offset=Offset.CC(), useShear=True, use7Dof=False, id:int=0)

Creates composite PSC I-sections with concrete slab.

Parameters

  • Name: Section name
  • Symm (default=True): Symmetric section flag
  • Joint: List of joint connectivity values
  • Bc, tc, Hh: Slab parameters (width, thickness, haunch height)
  • H1: Web height
  • HL1-HL5, BL1-BL4: Left flange parameters
  • HR1-HR5, BR1-BR4: Right flange parameters
  • EgdEsb: Modular ratio (Egirder/Eslab)
  • DgdDsb: Density ratio (Dgirder/Dslab)
  • Pgd, Psb: Poisson's ratios for girder and slab
  • TgdTsb: Thermal coefficient ratio
  • MultiModulus (default=False): Enable multi-modulus analysis
  • CreepEratio, ShrinkEratio: Creep and shrinkage ratios
  • Offset (default=Offset.CC()): Section offset parameters
  • useShear (default=True): Enable shear deformation
  • use7Dof (default=False): Enable warping effect
  • id (default=0): Section ID

Object Attributes

  • ID (int): Section ID.
  • NAME (str): Section name.
  • SHAPE (str): Section shape, defaults to 'CI'.
  • TYPE (str): Type of section, defaults to 'COMPOSITE'.
  • SYMM (bool): Flag indicating if the section is symmetric.
  • BC (float): Slab width.
  • TC (float): Slab thickness.
  • HH (float): Haunch height.
  • MATL_ELAST (float): Modular ratio (Egirder/Eslab).
  • MATL_DENS (float): Density ratio (Dgirder/Dslab).
  • MATL_POIS_S (float): Poisson's ratio for girder.
  • MATL_POIS_C (float): Poisson's ratio for slab.
  • MATL_THERMAL (float): Thermal coefficient ratio.
  • USE_MULTI_ELAST (bool): Flag for multi-modulus analysis.
  • LONGTERM_ESEC (float): Creep E-ratio.
  • SHRINK_ESEC (float): Shrinkage E-ratio.
  • J1, JL1, JL2, JL3, JL4 (bool): Joint connectivity flags for the left side (and right side if symmetric).
  • JR1, JR2, JR3, JR4 (bool): Joint connectivity flags for the right side (if not symmetric).
  • OFFSET (Offset): An Offset object defining the section's offset.
  • USESHEAR (bool): Flag to indicate if shear deformation is considered.
  • USE7DOF (bool): Flag to indicate if warping effect (7th DOF) is considered.
  • H1 (float): Height parameter.
  • HL1, HL2, HL21, HL22, HL3, HL4, HL41, HL42, HL5 (float): Left flange dimensional parameters.
  • BL1, BL2, BL21, BL22, BL4, BL41, BL42 (float): Left flange dimensional parameters.
  • HR1, HR2, HR21, HR22, HR3, HR4, HR41, HR42, HR5 (float): Right flange dimensional parameters (values are mirrored from Left if SYMM is True, otherwise independently set).
  • BR1, BR2, BR21, BR22, BR4, BR41, BR42 (float): Right flange dimensional parameters (values are mirrored from Left if SYMM is True, otherwise independently set).

Examples

# Composite PSC I-Section Example
for i in range(2):
    Node(i * 10, 0, 0)
    Node.create()

Element.Beam(1, 2)
Element.create()

# Create composite PSC I-section 
Section.Composite.PSCI(
    Name="Composite_PSC_I",
    Symm=True,  # Symmetrical section
    Joint=[0, 0, 0, 0, 0, 0, 0, 0, 0],  # Joint 

    # slab parameters
    Bc=3,
    tc=0.225,
    Hh=0,


    # Girder parameters
    HL1=0.15,
    HL2=0.1,
    HL3=1.43,
    HL4=0.12,
    HL5=0.3,

    BL1=0.14,
    BL2=0.425,
    BL4=0.375,


    # Material properties
    EgdEsb=1.06922,     # Elastic modulus ratio (girder/slab)
    DgdDsb=1.0,     # Density ratio
    Pgd=0.2,        # Poisson's ratio (girder)
    Psb=0.2,        # Poisson's ratio (slab)
    TgdTsb=1.0,     # Thermal expansion coefficient ratio

    # Time-dependent properties
    MultiModulus=False,

    # Offset and effects
    Offset=Offset.CT(),
    useShear=True,
    use7Dof=False,
    id=10
)
Section.create()

Composite Steel I-Section

Constructor

Section.Composite.SteelI_Type1(Name='', Bc=0, tc=0, Hh=0, Hw=0, B1=0, tf1=0, tw=0, B2=0, tf2=0, EsEc=0, DsDc=0, Ps=0, Pc=0, TsTc=0, MultiModulus=False, CreepEratio=0, ShrinkEratio=0, Offset:Offset=Offset.CC(), useShear=True, use7Dof=False, id:int=0)

Creates composite steel I-sections with concrete slab.

Parameters

  • Name: Section name
  • Bc, tc, Hh: Slab parameters (width, thickness, haunch height)
  • Hw: Web height
  • B1, tf1: Top flange width and thickness
  • tw: Web thickness
  • B2, tf2: Bottom flange width and thickness
  • EsEc: Modular ratio (Esteel/Econcrete)
  • DsDc: Density ratio (Dsteel/Dconcrete)
  • Ps, Pc: Poisson's ratios for steel and concrete
  • TsTc: Thermal coefficient ratio
  • MultiModulus (default=False): Enable multi-modulus analysis
  • CreepEratio, ShrinkEratio: Creep and shrinkage ratios
  • Offset (default=Offset.CC()): Section offset parameters
  • useShear (default=True): Enable shear deformation
  • use7Dof (default=False): Enable warping effect
  • id (default=0): Section ID

Object Attributes

  • ID (int): Section ID.
  • NAME (str): Section name.
  • SHAPE (str): Section shape, defaults to 'I'.
  • TYPE (str): Type of section, defaults to 'COMPOSITE'.
  • BC (float): Slab width.
  • TC (float): Slab thickness.
  • HH (float): Haunch height.
  • HW (float): Steel web height.
  • B1 (float): Steel top flange width.
  • TF1 (float): Steel top flange thickness.
  • TW (float): Steel web thickness.
  • B2 (float): Steel bottom flange width.
  • TF2 (float): Steel bottom flange thickness.
  • MATL_ELAST (float): Modular ratio (Esteel/Econcrete).
  • MATL_DENS (float): Density ratio (Dsteel/Dconcrete).
  • MATL_POIS_S (float): Poisson's ratio for steel.
  • MATL_POIS_C (float): Poisson's ratio for concrete.
  • MATL_THERMAL (float): Thermal coefficient ratio.
  • USE_MULTI_ELAST (bool): Flag for multi-modulus analysis.
  • LONGTERM_ESEC (float): Creep E-ratio.
  • SHRINK_ESEC (float): Shrinkage E-ratio.
  • OFFSET (Offset): An Offset object defining the section's offset.
  • USESHEAR (bool): Flag to indicate if shear deformation is considered.
  • USE7DOF (bool): Flag to indicate if warping effect (7th DOF) is considered.

Examples

# Composite Steel I-Section Example
for i in range(2):
    Node(i*10, 0, 0)
    Node.create()

Element.Beam(1, 2)
Element.create()

# Create composite steel I-section
Section.Composite.SteelI_Type1(
    Name="Composite_Steel_I",
    Bc=3, tc=0.25,  # Slab parameters
    Hw=2, B1=2.5, tf1=0.2, # Steel I parameters
    tw=0.2, B2=2.5, tf2=0.2,  
    EsEc=6.39, DsDc=3.0792, Ps=0.3, Pc=0.2, TsTc=1.2,

    # Offset and effects
    Offset=Offset.CT(),
    useShear=True,
    use7Dof=False,
    id=13
)
Section.create()