SetChinese2002 {Wind Load}

SetChinese2002

Syntax

SapObject.SapModel.LoadPatterns.AutoWind.SetChinese2002

VB6 Procedure

Function SetChinese2002(ByVal Name As String, ByVal ExposureFrom As Long, ByVal DirAngle As Double, ByVal BuildingWidth As Double, ByVal Us As Double, ByVal UserZ As Boolean, ByVal TopZ As Double, ByVal BottomZ As Double, ByVal wzero As Double, ByVal Rt As Long, ByVal PhiZOpt As Long, ByVal T1Opt As Long, ByVal UserT As Double, ByVal DampRatio As Double, Optional ByVal UserExposure As Boolean = False) As Long

Parameters

Name

The name of an existing Wind-type load pattern.

ExposureFrom

This is either 1 or 2, indicating the source of the wind exposure.

1 = From extents of rigid diaphragms

2 = From area objects

DirAngle

The direction angle for the wind load. This item applies only when ExposureFrom = 1.

BuildingWidth

The building width. [L]

Us

The shape coefficient. This item applies only when ExposureFrom = 1.

UserZ

This item is True if the top and bottom elevations of the wind load are user specified. It is False if the elevations are determined by the program.

TopZ

This item applies only when the UserZ item is True. It is the global Z-coordinate at the highest level where auto wind loads are applied. [L]

BottomZ

This item applies only when the UserZ item is True. It is the global Z-coordinate at the lowest level where auto wind loads are applied. [L]

wzero

The basic wind pressure in kN/m
2
.

Rt

This is 1, 2, 3 or 4, indicating the ground roughness.

1 = A

2 = B

3 = C

4 = D

PhiZOpt

This is either 0 or 1, indicating the Phi Z source.

0 = Modal analysis

1 = Z/H ratio

T1Opt

This is either 0 or 1, indicating the T1 source.

0 = Modal analysis

1 = User defined

UserT

This item applies only when the T1 source is user defined (T1Opt = 1). It is the user defined T1 period. [s]

DampRatio

The damping ratio.

UserExposure

If this item is True, the wind exposure widths are provided by the user. If it is False, the wind exposure widths are calculated by the program from the extents of the diaphragms.

Remarks

This function assigns auto wind loading parameters for Chinese 2002.

The function returns zero if the parameters are successfully assigned; otherwise it returns a nonzero value.

VBA Example

Sub AssignWindChinese2002()

'dimension variables

Dim SapObject As Sap2000v15.SapObject

Dim SapModel As cSapModel

Dim ret As Long

'create Sap2000 object

Set SapObject = New Sap2000v15.SapObject

'start Sap2000 application

SapObject.ApplicationStart

'create SapModel object

Set SapModel = SapObject.SapModel

'initialize model

ret = SapModel.InitializeNewModel

'create model from template

ret = SapModel.File.New3DFrame(BeamSlab, 2, 144, 3, 336, 2, 432)

'define diaphragm constraints

ret = SapModel.ConstraintDef.SetDiaphragm("Diaph1", Z)

ret = SapModel.ConstraintDef.SetDiaphragm("Diaph2", Z)

'assign points to diaphragm

ret = SapModel.SelectObj.ClearSelection

ret = SapModel.SelectObj.PlaneXY("2")

ret = SapModel.PointObj.SetConstraint("", "Diaph1", SelectedObjects)

ret = SapModel.SelectObj.ClearSelection

ret = SapModel.SelectObj.PlaneXY("3")

ret = SapModel.PointObj.SetConstraint("", "Diaph2", SelectedObjects)

ret = SapModel.SelectObj.ClearSelection

'add new load pattern

ret = SapModel.LoadPatterns.Add("WIND", LTYPE_WIND)

'assign Chinese2002 parameters

ret = SapModel.LoadPatterns.AutoWind.SetChinese2002("WIND", 1, 0, 1200, 0.5, False, 0, 0, 0.48, 3, 1, 1, 0.6, 0.04)

'close Sap2000

SapObject.ApplicationExit False

Set SapModel = Nothing

Set SapObject = Nothing

End Sub

Release Notes

Initial release in version 11.01.

Changed nomenclature from Load Cases, Analysis Cases and Response Combinations to Load Patterns, Load Cases and Load Combinations, respectively, in version 12.00.

The function is obsolete and has been superseded by 
SetChinese2002_1
 as of version 14.1.0. This function is maintained for backward compatibility. New function added.

See Also

GetChinese2002