RCCircShape Class Reference

Class that stores funcions, geometric and mechanical properties of RC circular shape profile. More...

Inheritance diagram for RCCircShape:

Public Member Functions
def	__init__ (self, b, L, e, fc, D_bars, int n_bars, fy, Ey, D_hoops, s, fs, Es, name_tag="Not Defined", rho_s_vol=-1, Ec=-1)
	The conctructor of the class. More...
def	ComputeEc (self)
	Compute Ec using the formula from Mander et Al. More...
def	ComputeI (self)
	Compute the moment of inertia of the circular section. More...
def	ComputeRhoVol (self)
	Compute the ratio of the volume of transverse confining steel to the volume of confined concrete core. More...
def	ReInit (self, rho_s_vol=-1, Ec=-1)
	Implementation of the homonym abstract method. More...
def	ShowInfo (self)
	Implementation of the homonym abstract method. More...
def	UpdateStoredData (self)
	Implementation of the homonym abstract method. More...

Public Attributes
	A
	Ac
	As
	Ay
	b
	bc
	cl_bars
	cl_hoops
	D_bars
	D_hoops
	data
	e
	Ec
	Es
	Ey
	fc
	fs
	fy
	I
	L
	n_bars
	name_tag
	rho_bars
	rho_s_vol
	s

Detailed Description

Class that stores funcions, geometric and mechanical properties of RC circular shape profile.

Note that for the validity of the formulas, the hoops needs to be closed (with 135 degress possibly).

Parameters

Section

Parent abstract class.

Definition at line 570 of file Section.py.

Constructor & Destructor Documentation

__init__()

def __init__	(		self,
			b,
			L,
			e,
			fc,
			D_bars,
		int	n_bars,
			fy,
			Ey,
			D_hoops,
			s,
			fs,
			Es,
			name_tag = "Not Defined",
			rho_s_vol = -1,
			Ec = -1
	)

The conctructor of the class.

Parameters

b	(float): Width of the section.
L	(float): Effective length of the element associated with this section. If the panel zone is present, exclude its dimension.
e	(float): Concrete cover.
fc	(float): Unconfined concrete compressive strength (cylinder test).
D_bars	(float): Diameter of the vertical reinforcing bars.
n_bars	(int): Number of vertical reinforcing bars.
fy	(float): Yield stress for reinforcing bars.
Ey	(float): Young modulus for reinforcing bars.
D_hoops	(float): Diameter of the hoops.
s	(float): Vertical centerline spacing between hoops.
fs	(float): Yield stress for the hoops.
Es	(float): Young modulus for the hoops
name_tag	(str, optional): A nametag for the section. Defaults to "Not Defined".
rho_s_vol	(float, optional): Ratio of the volume of transverse confining steel to the volume of confined concrete core. Defaults to -1, e.g. computed according to Mander et Al. 1988.
Ec	(float, optional): Young modulus for concrete. Defaults to -1, e.g. computed in init() and ReInit().

Exceptions

NegativeValue	b needs to be positive.
NegativeValue	L needs to be positive.
NegativeValue	e needs to be positive.
PositiveValue	fc needs to be negative.
NegativeValue	D_bars needs to be positive.
NegativeValue	n_bars needs to be a positive integer.
NegativeValue	fy needs to be positive.
NegativeValue	Ey needs to be positive.
NegativeValue	D_hoops needs to be positive.
NegativeValue	s needs to be positive.
NegativeValue	fs needs to be positive.
NegativeValue	Es needs to be positive.
NegativeValue	Ec needs to be positive if different from -1.
InconsistentGeometry	e should be smaller than half the depth and the width of the section.

Definition at line 577 of file Section.py.

    def __init__(self, b, L, e, fc, D_bars, n_bars: int, fy, Ey, D_hoops, s, fs, Es, name_tag = "Not Defined", rho_s_vol = -1, Ec = -1):
        """
        The conctructor of the class.
 
        @param b (float): Width of the section.
        @param L (float): Effective length of the element associated with this section.
            If the panel zone is present, exclude its dimension.
        @param e (float): Concrete cover.
        @param fc (float): Unconfined concrete compressive strength (cylinder test).
        @param D_bars (float): Diameter of the vertical reinforcing bars.
        @param n_bars (int): Number of vertical reinforcing bars.
        @param fy (float): Yield stress for reinforcing bars.
        @param Ey (float): Young modulus for reinforcing bars.
        @param D_hoops (float): Diameter of the hoops.
        @param s (float): Vertical centerline spacing between hoops.
        @param fs (float): Yield stress for the hoops.
        @param Es (float): Young modulus for the hoops
        @param name_tag (str, optional): A nametag for the section. Defaults to "Not Defined".
        @param rho_s_vol (float, optional): Ratio of the volume of transverse confining steel to the volume of confined concrete core.
            Defaults to -1, e.g. computed according to Mander et Al. 1988.
        @param Ec (float, optional): Young modulus for concrete. Defaults to -1, e.g. computed in __init__() and ReInit().
 
        @exception NegativeValue: b needs to be positive.
        @exception NegativeValue: L needs to be positive.
        @exception NegativeValue: e needs to be positive.
        @exception PositiveValue: fc needs to be negative.
        @exception NegativeValue: D_bars needs to be positive.
        @exception NegativeValue: n_bars needs to be a positive integer.
        @exception NegativeValue: fy needs to be positive.
        @exception NegativeValue: Ey needs to be positive.
        @exception NegativeValue: D_hoops needs to be positive.
        @exception NegativeValue: s needs to be positive.
        @exception NegativeValue: fs needs to be positive.
        @exception NegativeValue: Es needs to be positive.
        @exception NegativeValue: Ec needs to be positive if different from -1.
        @exception InconsistentGeometry: e should be smaller than half the depth and the width of the section.
        """
        # Check
        if b < 0: raise NegativeValue()
        if L < 0: raise NegativeValue()
        if e < 0: raise NegativeValue()
        if fc > 0: raise PositiveValue()
        if D_bars < 0: raise NegativeValue()
        if n_bars < 0: raise NegativeValue()
        if fy < 0: raise NegativeValue()
        if Ey < 0: raise NegativeValue()
        if D_hoops < 0: raise NegativeValue()
        if s < 0: raise NegativeValue()
        if fs < 0: raise NegativeValue()
        if Es < 0: raise NegativeValue()
        if Ec != -1 and Ec < 0: raise NegativeValue()
        if e > b/2: raise InconsistentGeometry()
 
        # Arguments
        self.b = b
        self.L = L
        self.e = e
        self.fc = fc
        self.D_bars = D_bars
        self.n_bars = n_bars
        self.fy = fy
        self.Ey = Ey
        self.D_hoops = D_hoops
        self.s = s
        self.fs = fs
        self.Es = Es
        self.name_tag = name_tag
 
        # Initialized the parameters that are dependent from others
        self.ReInit(rho_s_vol, Ec)
 
 

Member Function Documentation

ComputeEc()

def ComputeEc

(

self

)

Compute Ec using the formula from Mander et Al.

1988.

Returns

float: Young modulus of concrete.

Definition at line 744 of file Section.py.

    def ComputeEc(self):
        """
        Compute Ec using the formula from Mander et Al. 1988.
 
        @returns float: Young modulus of concrete.
        """
 
        return 5000.0 * math.sqrt(-self.fc/MPa_unit) * MPa_unit
 
 

ComputeI()

def ComputeI

(

self

)

Compute the moment of inertia of the circular section.

Returns

float: Moment of inertia.

Definition at line 754 of file Section.py.

    def ComputeI(self):
        """
        Compute the moment of inertia of the circular section.
 
        @returns float: Moment of inertia.
        """
        return self.b**4*math.pi/64
 
 

ComputeRhoVol()

def ComputeRhoVol

(

self

)

Compute the ratio of the volume of transverse confining steel to the volume of confined concrete core.

(according to Mander et Al. 1988).

Returns

float: Ratio.

Definition at line 731 of file Section.py.

    def ComputeRhoVol(self):
        """
        Compute the ratio of the volume of transverse confining steel to the volume of confined concrete core.
        (according to Mander et Al. 1988).
 
        @returns float: Ratio.
        """
        vol_s = self.As*math.pi*self.bc
        vol_c = math.pi/4*self.bc**2*self.s
 
        return vol_s/vol_c
 
 

ReInit()

def ReInit	(		self,
			rho_s_vol = -1,
			Ec = -1
	)

Implementation of the homonym abstract method.

See parent class DataManagement for detailed information.

Parameters

rho_s_vol	(float, optional): Ratio of the volume of transverse confining steel to the volume of confined concrete core. Defaults to -1, e.g. computed according to Mander et Al. 1988.
Ec	(float): Young modulus for concrete. Defaults to -1, e.g. computed according to Mander et Al. 1988.

Definition at line 649 of file Section.py.

    def ReInit(self, rho_s_vol = -1, Ec = -1):
        """
        Implementation of the homonym abstract method.
        See parent class DataManagement for detailed information.
 
        @param rho_s_vol (float, optional): Ratio of the volume of transverse confining steel to the volume of confined concrete core.
            Defaults to -1, e.g. computed according to Mander et Al. 1988.
        @param Ec (float): Young modulus for concrete. Defaults to -1, e.g. computed according to Mander et Al. 1988.
        """
        # Precompute some members
        self.cl_hoops = self.e + self.D_hoops/2.0 # centerline distance from the border of the extreme confining hoops
        self.cl_bars = self.e + self.D_bars/2.0 + self.D_hoops # centerline distance from the border of the corner bars
        self.bc = self.b - self.cl_hoops*2 # diameter of spiral (hoops) between bar centerline
        self.As = ComputeACircle(self.D_hoops)
 
        # Arguments
        self.rho_s_vol = self.ComputeRhoVol() if rho_s_vol == -1 else rho_s_vol
        self.Ec = self.ComputeEc() if Ec == -1 else Ec
 
        # Members
        self.A = ComputeACircle(self.b)
        self.Ac = ComputeACircle(self.bc)
        self.Ay = ComputeACircle(self.D_bars)
        self.rho_bars = ComputeRho(self.Ay, self.n_bars, self.A)
        self.I = self.ComputeI()
 
        # Data storage for loading/saving
        self.UpdateStoredData()
 
 

ShowInfo()

def ShowInfo

(

self

)

Implementation of the homonym abstract method.

See parent class DataManagement for detailed information.

Definition at line 710 of file Section.py.

    def ShowInfo(self):
        """
        Implementation of the homonym abstract method.
        See parent class DataManagement for detailed information.
        """
        print("")
        print("Requested info for RC circular section of name tag = {}".format(self.name_tag))
        print("Width of the section b = {} mm".format(self.b/mm_unit))
        print("Concrete cover e = {} mm".format(self.e/mm_unit))
        print("Concrete area A = {} mm2".format(self.A/mm2_unit))
        print("Core concrete area Ac = {} mm2".format(self.Ac/mm2_unit))
        print("Unconfined concrete compressive strength fc = {} MPa".format(self.fc/MPa_unit))
        print("Young modulus for concrete Ec = {} GPa".format(self.Ec/GPa_unit))
        print("Diameter of the reinforcing bars D_bars = {} mm and area of one bar Ay = {} mm2 with {} bars".format(self.D_bars/mm_unit, self.Ay/mm2_unit, self.n_bars))
        print("Diameter of the hoops D_hoops = {} mm and area of one stirrup As = {} mm2".format(self.D_hoops/mm_unit, self.As/mm2_unit))
        print("Ratio of area of longitudinal reinforcement to area of concrete section rho_bars = {} ".format(self.rho_bars))
        print("Ratio of the volume of transverse confining steel to the volume of confined concrete core rho_s = {} ".format(self.rho_s_vol)) 
        print("Moment of inertia of the circular section I = {} mm4".format(self.I/mm4_unit))
        print("")
    
 

UpdateStoredData()

def UpdateStoredData

(

self

)

Implementation of the homonym abstract method.

See parent class DataManagement for detailed information.

Definition at line 679 of file Section.py.

    def UpdateStoredData(self):
        """
        Implementation of the homonym abstract method.
        See parent class DataManagement for detailed information.
        """
        self.data = [["INFO_TYPE", "RCCircShape"], # Tag for differentiating different data
            ["name_tag", self.name_tag],
            ["b", self.b],
            ["bc", self.bc],
            ["L", self.L],
            ["e", self.e],
            ["A", self.A],
            ["Ac", self.Ac],
            ["I", self.I],
            ["fc", self.fc],
            ["Ec", self.Ec],
            ["D_bars", self.D_bars],
            ["n_bars", self.n_bars],
            ["Ay", self.Ay],
            ["rho_bars", self.rho_bars],
            ["cl_bars", self.cl_bars],
            ["fy", self.fy],
            ["Ey", self.Ey],
            ["D_hoops", self.D_hoops],
            ["s", self.s],
            ["As", self.As],
            ["rho_s_vol", self.rho_s_vol],
            ["cl_hoops", self.cl_hoops],
            ["fs", self.fs],
            ["Es", self.Es]]
 

Member Data Documentation

A

A

Definition at line 669 of file Section.py.

Ac

Ac

Definition at line 670 of file Section.py.

As

As

Definition at line 662 of file Section.py.

Ay

Ay

Definition at line 671 of file Section.py.

b

b

Definition at line 631 of file Section.py.

bc

bc

Definition at line 661 of file Section.py.

cl_bars

cl_bars

Definition at line 660 of file Section.py.

cl_hoops

cl_hoops

Definition at line 659 of file Section.py.

D_bars

D_bars

Definition at line 635 of file Section.py.

D_hoops

D_hoops

Definition at line 639 of file Section.py.

data

data

Definition at line 684 of file Section.py.

e

e

Definition at line 633 of file Section.py.

Ec

Ec

Definition at line 666 of file Section.py.

Es

Es

Definition at line 642 of file Section.py.

Ey

Ey

Definition at line 638 of file Section.py.

fc

fc

Definition at line 634 of file Section.py.

fs

fs

Definition at line 641 of file Section.py.

fy

fy

Definition at line 637 of file Section.py.

I

I

Definition at line 673 of file Section.py.

L

L

Definition at line 632 of file Section.py.

n_bars

n_bars

Definition at line 636 of file Section.py.

name_tag

name_tag

Definition at line 643 of file Section.py.

rho_bars

rho_bars

Definition at line 672 of file Section.py.

rho_s_vol

rho_s_vol

Definition at line 665 of file Section.py.

s

s

Definition at line 640 of file Section.py.

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The documentation for this class was generated from the following file:

• /media/carmine/DATA/Programmi/OpenSeesPyAssistant/Section.py