/// <summary>
///
/// </summary>
/// <returns>KN/M</returns>
public override double ComputeValue()
{
PowerUnitConversion GHLedger = new PowerUnitConversion();
//这里涉及到了横向水平杆自重的换算
//原则上不能在公式中有单位换算，但外面传值为质量的单位，内部单位换算不可避免
GHLedger.N = m * 9.8;
_targetValue = 1.2 * (GHLedger.KN / lb + 0.35 * la) + 1.4 * qConsload * la;
if (_targetValue > 0)
{
_isComputed = true;
}
return(_targetValue);
}
private void CalcN()
{
//进行脚手架尺寸的单位换算
LengthUnitConversion la = new LengthUnitConversion();
LengthUnitConversion lb = new LengthUnitConversion();
LengthUnitConversion h = new LengthUnitConversion();
la.M = ScaffoldPara.La;
lb.M = ScaffoldPara.Lb;
h.M = ScaffoldPara.H;
//根据纵距，横距步距查杆件
tfs_Fitting = new TFS_Fitting((int)la.MM, (int)lb.MM, (int)h.MM, ScaffoldPara.Fitting_Model);
tfs_Fitting.Search();
if (!tfs_Fitting.IsSearched)
{
return;
}
//进行各杆自重的单位换算
PowerUnitConversion GStandingTube = new PowerUnitConversion(); //立杆自重
PowerUnitConversion GVLedger = new PowerUnitConversion(); //纵向水平杆自重
PowerUnitConversion GHLedger = new PowerUnitConversion(); //横向水平杆自重
PowerUnitConversion GVBrace = new PowerUnitConversion(); //竖向斜杆自重
PowerUnitConversion GHBrace = new PowerUnitConversion(); //水平斜杆自重N
GStandingTube.N = tfs_Fitting.FindMaterialPara("立杆", "the_weight") * 9.8;
GVLedger.N = tfs_Fitting.FindMaterialPara("纵向水平杆", "the_weight") * 9.8;
GHLedger.N = tfs_Fitting.FindMaterialPara("横向水平杆", "the_weight") * 9.8;
GVBrace.N = tfs_Fitting.FindMaterialPara("竖向斜杆", "the_weight") * 9.8;
GHBrace.N = tfs_Fitting.FindMaterialPara("水平斜杆", "the_weight") * 9.8;
//计算脚手架结构自重标准值产生的轴力 单位：KN
f_NG1K = new F_NG1K(GStandingTube.KN, GVLedger.KN, GHLedger.KN, GVBrace.KN, GHBrace.KN, ScaffoldPara.Step_Num);
f_NG1K.ComputeValue();
//计算NG2k：构配件自重标准值产生的轴力 单位：KN
f_NG2K = new F_NG2K(la.M, lb.M, ScaffoldPara.Act_Layers, ScaffoldPara.Step_Num * h.M);
f_NG2K.ComputeValue();
//查询施工均布活荷载标准值q 单位： KN / m2
tfm1_qConsLoad = new TFM1_qConsLoad(ScaffoldPara.Sca_Type.Trim() + "脚手架");
tfm1_qConsLoad.Search();
//∑NQK：施工荷载标准值产生的轴向力总和
f_NQK = new F_NQK(la.M, lb.M, tfm1_qConsLoad.TargetValue, ScaffoldPara.Con_Layers);
f_NQK.ComputeValue();
//计算N：支架立杆轴向力设计值 单位：KN
f_N = new F_N(f_NG1K.TargetValue, f_NG2K.TargetValue, f_NQK.TargetValue);
f_N.ComputeValue();
N = f_N.TargetValue;
}
