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~HCLPFCN

 

~HCLPFCN, Lab1, Lab2, DIRKEY, VAL1, VAL2, VAL3, VAL4, VAL5, VAL6, VAL7, VAL8, VAL9,VAL10,VAL11,VAL12

Checks High Confidence of a Low Probability of Failure (HCLPF) seismic margin for reinforced concrete cross sections and shell vertices (valid only for Eurocode 2 and ACI 349-01 codes).

POST1: Concrete Checking

Lab1, Lab2

Labels identifying the type of checking to be made. These labels are related with the CHCKTYPE label used to retrieve results

DIRKEY

Key identifying the bending plane and shear to be checked.

VAL1, VAL10

Parameters that depends on checking code or method.

VAL11

Load step of seismic loads.

VAL12

Substep of seismic loads.

Notes

- A seismic RCV file must exist and be specified with ~CFFILE2 command, taking NFILE argument as NFILE=4.

 

Lab1= SHT

~HCLPFCN, SHT, Lab2, DIRKEY, , , VAL3, , , , , ,VAL9, ,VAL11,VAL12

Checks shear and torsion on reinforced concrete cross sections. Valid labels are:

 

Lab2	Description
SHEAR	Shear checking. Torsional moment is not taken into account. (CHCKTYPE = CHKSH)
TORSION	Torsional checking. Shear is not taken into account. (CHCKTYPE = CHKTR)
BOTH	Both shear and torsional checking. Default value. (CHCKTYPE = CHKSHTR)
DIRKEY	Description
0	Shear checking along element Y direction (shear QY). Default value.
1	Shear checking along element Z direction (shear QZ).

 

If the active code is ACI 349-01:

VAL3	Type of analysis (different shear and torsion strength reduction factors are used in each case).
0	Strength of joints (f = 0.60). Default value
1	Other cases (f = 0.85).

 

If the active code is ACI 349-01 or ACI 318-05:

VAL9	Maximum steel strength force Â
0	Restricts the value of the strength force up to the maximum provided in the code. Default value
1	Strength force limitation ignored

 

Lab1= 3DB

~ HCLPFCN, 3DB, , , VAL1, VAL2, VAL3, , , , , , , ,VAL11,VAL12

Checks axial load +biaxial bending on reinforced concrete cross sections. (CHCKTYPE = CHK3D)

VAL1

Maximum allowable stress in concrete.

VAL2

Maximum allowable stress in longitudinal reinforcement.

VAL3

Type of member (different strength reduction factors for axial compression, and axial compression with flexure are used in each case).

If the active code is ACI 318-05:

1	Members with spiral reinforcement (f = 0.70).
0	Other cases (f = 0.65). Default value.

 

If the active code is ACI 349-01:

1	Members with spiral reinforcement (f = 0.75).
0	Other cases (f = 0.70). Default value.

 

Lab1= 2DB

~ HCLPFCN, 2DB, Lab2, DIRKEY, VAL1, VAL2, VAL3, , , , , , , ,VAL11,VAL12

Checks axial force + bending on reinforced concrete cross sections. (CHCKTYPE = CHK2D)

Lab2

For the ITER code:

Lab2	Description
Blank or ULSR1	Strain limits specified in the material.
ULSR3	Accidental conditions (ecu2 = 3.5 ‰, ecu = 2.0 ‰, eud = 45.0 ‰)
ULSR6	Impact of general aviation plane (ecu2 = 5 ‰, ecu = 2.0 ‰, eud = 45.0 ‰)
ULSR7	Load drops (ecu2 = 5 ‰, ecu = 2.0 ‰, eud = 45.0 ‰)
SLSR1	Limited crackwidths (ecu2 = 0.60 fck/E, ecu = 0.45 fck/E, eud = smax/E) (*) (*) For fctm a value of 2.896 MPa is considered (equivalent to a fck = 30 MPa concrete)
SLSR2	Limitation of stresses (ecu2 = 0.60 fck/E, ecu = 2.0 ‰, eud = 0.8 fyk/E)

 

In these cases, VAL1 and VAL2 are ignored.

For the rest of the codes Lab2 is ignored.

Dirkey

DIRKEY	Description
0	Bending in XY local plane of element (Moments Mz). Default value.
1	Bending in XZ local plane of element (Moments My).

VAL1

Maximum allowable stress in concrete.

VAL2

Maximum allowable stress in longitudinal reinforcement.

VAL3

Type of member (different strength reduction factors for axial compression, and axial compression with flexure are used in each case).

If the active code is ACI 318-05:

1	Members with spiral reinforcement (f = 0.70).
0	Other cases (f = 0.65). Default value.

 

If the active code is ACI 349-01:

1	Members with spiral reinforcement (f = 0.75).
0	Other cases (f = 0.70). Default value.

 

Lab1= SHELL

~ HCLPFCN, SHELL, Lab2, , VAL1, VAL2, VAL3, VAL4, VAL5, VAL6, VAL7, VAL8, VAL9,VAL10,VAL11,VAL12

Checks shell vertices. Valid labels are:

Lab2

Description

VF

Checking according to the Orthogonal Directions method. (CHCKTYPE = CVF) VAL1 Forces and moments used: = 0 ® Takes into account torsional moments and membrane shear force. = 1 ® Neglects torsional moments and membrane shear force. = 2 ® Takes into account torsional moments and neglects membrane shear force.   VAL2 Maximum stress allowed in reinforcement. If left blank, the maximum strain allowed in tension defined in the material (EPSMAX) will be used as pivot A.

 

SHEAR

Check shear reinforcement according to the active code. (CHCKTYPE = SHCSH). If the active code is ACI 349-01: VAL3 Type of analysis (different shear strength reduction factors are used in each case). = 0 Strength of joints (f = 0.60). Default value = 1 Other cases (f = 0.85). VAL9 Maximum steel strength force = 0 Restricts the value of the strength force up to the maximum provided in the code. Default value = 1 Strength force limitation ignored

IPSHEAR

Check shear reinforcement according to the active code. (CHCKTYPE = IPSHCSH). If the active code is ACI 349-01: VAL1 Type of check: = 1  Walls with non-seismic loads. Covers chapter 14 of ACI 349-01 for walls. = 2 Walls with seismic loads. Covers chapters 14 and 21 of ACI 349-01 for walls. =3 Slabs with seismic loads. Covers chapter 21 of ACI 349-01 for slabs. No default value is defined.   VAL3 Type of analysis (different shear strength reduction factors are used in each case). = 0 Strength of joints (f = 0.60). Default value = 1 Other cases (f = 0.85).   VAL9 Maximum steel strength force = 0 Restricts the value of the strength force up to the maximum provided in the code. Default value = 1 Strength force limitation ignored

 

Notes

- Checking is done for the element ends (cross sections, shell vertices or solid sections) of selected elements at the moment of command execution.

- All calculations are performed according to the active code (see ~CODESEL command).

- The description of the calculation process used can be found in the Theory Manual.

- The analysis results are stored in CivilFEM results file as an alternative. Possible results can be listed using ~cfset,list

 

 

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