Расчет параметров и построение паспорта прочности несущей способности тюбинговых обделок вертикальных стволов метрополитенов

3.3. Расчет параметров и построение паспорта прочности несущей способности тюбинговых обделок вертикальных стволов метрополитенов.

 

Параметры паспорта несущей способности тюбинговой обделки, т.е. координаты точек пересечения линий с осями  и , определяются по формулам:

1. Железобетонная тюбинговая обделка:

линия 1 - условие прочности по сжимающим напряжениям в ребре тюбинга:

;

;

линия 2 - условие прочности по растягивающим напряжениям в ребре тюбинга:

;

;

линия 3 - условие положительности нагрузок:

;

линия 4 - условие прочности по сжимающим напряжениям в спинке тюбинга:

;

;

линия 5 - условие прочности по растягивающим напряжениям в спинке тюбинга:

;

;

2. Чугунная тюбинговая обделка:

линия 1 - условие прочности по сжимающим напряжениям в ребре тюбинга:

;

;

линия 2 - условие прочности по растягивающим напряжениям в ребре тюбинга:

;

;

линия 3 - условие положительности нагрузок:

;

линия 4 - условие прочности по сжимающим напряжениям в спинке тюбинга:

;

;

линия 5 - условие прочности по растягивающим напряжениям в спинке тюбинга:

;

;

Примечание: при построении паспортов прочности тюбинговых обделок можно использовать программу для ЭВМ, приведенную в приложении 1.

При  несущую способность железобетонных обделок конструкции ВНИИМШС, марка бетона 400 для стволов диаметром 4.5 - 8.0 м можно определить по паспортам прочности приведенным на листах 3 и 4.

При  несущую способность чугунных тюбинговых обделок конструкции Шахтспецстрой, чугун марки СЧ 12-28 для стволов диаметром 6.0 - 7.0 м можно определить по паспортам прочности приведенным на листе 4.

3.4. Проверка устойчивости тюбинговых обделок вертикальных стволов метрополитенов.

 

Проверку устойчивости обделки вертикальных стволов метрополитенов, т.е. способности сопротивляться выпучиванию в сторону ствола, производится исходя из условия:

;

где  - коэффициент формы упругой линии кольца обделки при потере устойчивости; расчетное критическое давление  находится как наименьшее значение функции .

4. Приложения

4.1. Программа для проверки несущей способности и построения паспорта прочности тюбинговых обделок вертикальных стволов метрополитенов.

 

unit Calc1;

interface

uses

SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,

Forms, Dialogs, DBTables, DB, DBFilter, Grids, DBGrids, StdCtrls,

RXLookup, ExtCtrls, Buttons;

type

TForm1 = class(TForm)

Panel1: TPanel;

Panel2: TPanel;

rxDBLookupCombo1: TrxDBLookupCombo;

Edit1: TEdit;

Label1: TLabel;

Label2: TLabel;

Edit2: TEdit;

Label3: TLabel;

DBGrid1: TDBGrid;

Label4: TLabel;

TableSTUFF: TTable;

DataSourceSTUFF: TDataSource;

rxDBFilter1: TrxDBFilter;

DataSourceDATA: TDataSource;

TableDATA: TTable;

TableDATAR: TFloatField;

TableDATAMass: TFloatField;

TableDATAR_press: TFloatField;

TableDATAR_stretch: TFloatField;

TableDATAPuasson: TFloatField;

TableDATAR1: TFloatField;

TableDATARb: TFloatField;

TableDATAA: TFloatField;

TableDATAB: TFloatField;

TableDATAStuff: TSmallintField;

BitBtn1: TBitBtn;

RadioGroup1: TRadioGroup;

RadioButton1: TRadioButton;

RadioButton2: TRadioButton;

RadioButton3: TRadioButton;

procedure rxDBLookupCombo1Change(Sender: TObject);

procedure DBGrid1DblClick(Sender: TObject);

procedure RadioButton1Click(Sender: TObject);

procedure RadioButton2Click(Sender: TObject);

procedure RadioButton3Click(Sender: TObject);

private

 { Private declarations }

public

 { Public declarations }

end;

var

Form1: TForm1;

implementation

uses

Draw;

{$R *.DFM}

procedure TForm1.rxDBLookupCombo1Change(Sender: TObject);

var

S: String;

begin

rxDBFilter1.Deactivate;

rxDBFilter1.Filter.Clear;

s:='Stuff = '+TableSTUFF.FieldByName('Code').AsString;

rxDBFilter1.Filter.Add(S);

rxDBFilter1.Activate;

end;

procedure TForm1.DBGrid1DblClick(Sender: TObject);

var

Mass, R_press, R_stretch, Puasson, PuassonP, R1, Rb, R, A, B: Double;

P0, P2: Double;

C1, C2: Double;

K0, K1, K2, K3, K4: Double;

L, L1: Double;

ALFA1, ALFA2: Double;

BETA, BETA1, BETA2: Double;

DELTA1, DELTA2: Double;

GAMMA1, GAMMA2: Double;

D1, D2: Double;

F: Double;

SIGMARS, SIGMARR, SIGMASS, SIGMASR: Double;

i: Integer;

Pkr, PkrOld: Double;

Eo, Ep, J: Double;

procedure Calc;

begin

C1 := R1/Rb;

C2 := R/R1;

F := (C2*C2-1)/(C1*C1-1)*(C2*C2-1)/(C1*C1-1)*

(C2*C2-1)/(C1*C1-1)*(1+B/A);

D2 := (C2*C2+1)*(C2*C2+1)*(C2*C2+1)/(Puasson+1);

D1 := (C1*C1-1)*(C1*C1-1)/(Puasson+1);

DELTA2 := C2*C2*(C2*C2+1);

DELTA1 := C2*C2*(3-C2*C2);

GAMMA2 := C2*C2*(2*C2*C2*C2*C2+C2*C2+1);

GAMMA1 := C2*C2*(3+C2*C2);

BETA := (3+R/Rb*R/Rb)/(3-R/Rb*R/Rb);

BETA2 := C2*C2*C2*C2*(C2*C2+1)-D2+F*(C1*C1+1+D1);

BETA1 := 3*C2*C2-1-D2+F*((3-C2*C2)*C1*C1*C1*C1+D1);

ALFA2 := C2*C2*(2+C2*C2+C2*C2*C2*C2)-

D2+F*(2*C1*C1*C1*C1+C1*C1+1+D1);

ALFA1 := 3*C2*C2+1+D2+F*((C1*C1+3)*C1*C1*C1*C1-D1);

K4 := (ALFA2*DELTA1-ALFA1*DELTA2)/(ALFA2*BETA1-ALFA1*BETA2);

K3 := (ALFA1*GAMMA2-ALFA2*GAMMA1)/(ALFA2*BETA1-ALFA1*BETA2);

K2 := (BETA2*DELTA1-BETA1*DELTA2)/(ALFA2*BETA1-ALFA1*BETA2);

K1 := (BETA1*GAMMA2-BETA2*GAMMA1)/(ALFA2*BETA1-ALFA1*BETA2);

L1 := 4*C2*C2*(C2*C2+1-BETA)-(K1+BETA*K2)*((C1*C1+1)*(C1*C1+1)

+4*C2*C2)+2*(K3+BETA*K4)*((C2*C2+1)*(C2*C2+1)-2);

L := (K1+BETA*K2)*(C1*C1+1)-(K3+BETA*K4);

K0 := 3*C2*C2/((1+B/A)*(C2*C2-1)/(C1*C1-1)*(2+C1*C1)+2*C2*C2+1);

end;

begin

with TableDATA do begin

Mass := FieldByName('Mass').AsFloat;

R_press := FieldByName('R_press').AsFloat;

R_stretch := FieldByName('R_stretch').AsFloat;

Puasson := FieldByName('Puasson').AsFloat;

R1 := FieldByName('R1').AsFloat;

Rb := FieldByName('Rb').AsFloat;

R := FieldByName('R').AsFloat;

A := FieldByName('A').AsFloat;

B := FieldByName('B').AsFloat;

end;

if RadioButton1.Checked then begin

Calc;

if TableDATA.FieldByName('Stuff').AsInteger = 0 {Железо-бетон} then begin

PLines[isP0,1] := (C1*C1-1)*Mass*R_press/2*C1*C1*K0*(1+B/A);

PLines[isP2,1] := (C1*C1-1)*(C1*C1-1)*

Mass*R_press/4*C1*C1*K0*(1+B/A);

PLines[isP0,2] := -(C1*C1-1)*Mass*R_stretch/2*C1*C1*K0*(1+B/A);

PLines[isP2,2] := (C1*C1-1)*(C1*C1-1)*

Mass*R_stretch/4*C1*C1*K0*(1+B/A);

PLines[isP0,4] := (C2*C2-1)*Mass*R_press/(2*C2*C2-K0*

(C2*C2+1));

PLines[isP2,4] := (C2*C2-1)*(C2*C2-1)*Mass*R_press/L1;

PLines[isP0,5] := -(C2*C2-1)*

Mass*R_stretch/(2*C2*C2-K0*(C2*C2+1));

PLines[isP2,5] := (C2*C2-1)*(C2*C2-1)*Mass*R_stretch/L1;

end

else begin {Чугун}

PLines[isP0,1] := (C1*C1-1)*Mass*R_press/2*C1*K0*(1+B/A);

PLines[isP2,1] := (C2*C2-1)*(C2*C2-1)*

Mass*R_press/4*C1*C1*K0*(1+B/A);

PLines[isP0,2] := -(C2*C2-1)*Mass*R_stretch/2*C1*K0*(1+B/A);

PLines[isP2,2] := (C1*C1-1)*(C1*C1-1)*

Mass*R_stretch/4*C1*C1*K0*(1+B/A);

PLines[isP0,4] := (C2*C2-1)*Mass*R_press/(2*C2*C2-K0*

(C2*C2+1));

PLines[isP2,4] := (C2*C2-1)*(C2*C2-1)*Mass*R_press/L1;

PLines[isP0,5] := -(C2*C2-1)*Mass*R_stretch/(2*C2*C2-K0*

(C2*C2+1));

PLines[isP2,5] := (C2*C2-1)*(C2*C2-1)*Mass*R_stretch/L1;

end;

DrawForm.ShowModal;

end

else if RadioButton2.Checked then begin

Calc;

P0 := StrToFloat(Edit1.Text);

P2 := StrToFloat(Edit2.Text);

SIGMARS := ABS(2*C1*C1/(C1*C1-1)*(1+B/A)*(P0*K0+2*P2*L/

(C1*C1-1)));

SIGMARR := ABS(2*C1*C1/(C1*C1-1)*(1+B/A)*(P0*K0-2*P2*L/

(C1*C1-1)));

SIGMASS := ABS(P0/(C2*C2-1)*(2*C2*C2-K0*(C2*C2+1))+P2*L1/

(C2*C2-1)*(C2*C2-1));

SIGMASR := ABS(P0/(C2*C2-1)*(2*C2*C2-K0*(C2*C2+1))-P2*L1/

(C2*C2-1)*(C2*C2-1));

if (SIGMARS>Mass*R_press) or (SIGMARR>Mass*R_stretch) or

(SIGMASS>Mass*R_press) or (SIGMASR>Mass*R_stretch)

then

MessageDlg('Несущая способность не

обеспечена',mtInformation,[mbOk],0)

else

MessageDlg('Несущая способность

обеспечена',mtInformation,[mbOk],0);

end

else begin

i:=1;

PkrOld :=0;

repeat

i := i+1;

Pkr := (i*i-1)*Eo*J/((1-Puasson)*(1-Puasson)*R*R*R)+Ep/(2*

 (1+PuassonP))*((i+1)*(i+1)/(i*i*(i-1))+(i-1)*

(i-1)/(i*i*(i+1)*(3-4*PuassonP)));

if Pkr < PkrOld then PkrOld := Pkr else i:=0;

until i = 0;

P0 := StrToFloat(Edit1.Text);

if P0<=Pkr then

MessageDlg('Устойчивость обеспечена',mtInformation,[mbOk],0)

else

MessageDlg('Устойчивость не

обеспечена',mtInformation,[mbOk],0);

end;

end;

procedure TForm1.RadioButton1Click(Sender: TObject);

begin

Label2.Visible := False;

Label3.Visible := False;

Edit1.Visible := False;

Edit2.Visible := False;

end;

procedure TForm1.RadioButton2Click(Sender: TObject);

begin

Label2.Visible := True;

Label3.Visible := True;

Edit1.Visible := True;

Edit2.Visible := True;

end;

procedure TForm1.RadioButton3Click(Sender: TObject);

begin

Label2.Visible := True;

Label3.Visible := False;

Edit1.Visible := True;

Edit2.Visible := False;

end;

end.

unit Draw;

interface

uses

SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics,

Controls, Forms, Dialogs, StdCtrls, Buttons, ExtCtrls;

type

TDrawForm = class(TForm)

BitBtn1: TBitBtn;

procedure FormActivate(Sender: TObject);

private

{ Private declarations }

public

{ Public declarations }

end;

TPaintData = (isP0,isP2);

TDiagramArray = Array[TPaintData,1..5] of Double;

var

PLines : TDiagramArray;

DrawForm: TDrawForm;

implementation

{$R *.DFM}

procedure TDrawForm.FormActivate(Sender: TObject);

var

R: TRect;

MaxX, MinX: Double;

MaxY, MinY: Double;

Nx, Ny: Integer;

Kx, Ky: Double;

i: Byte;

PointMin, PointMax: Double;

procedure DrawLine(X0, k, b:Double);

begin

Canvas.MoveTo(R.Left+60+Round(Kx*X0),R.Bottom-30);

if k<0 then

Canvas.LineTo(R.Left+60,Round(R.Bottom - 33 -

 (Ky*(b+(k*(10)/Kx)))))

else

Canvas.LineTo(R.Right-10,Round(R.Bottom - 33 -

 (Ky*(-b+(k*((R.Right-R.Left-70)/Kx))))));

end;

begin

PLines[isP0,3] := 0;

PLines[isP2,3] := 0;

MaxX := 0.0;

MinX := 0.0;

MaxY := 0.0;

MinY := 0.0;

for i := 1 to 5 do begin

if PLines[isP0,i] > MaxX then MaxX := PLines[isP0,i];

if PLines[isP2,i] > MaxY then MaxY := PLines[isP2,i];

if PLines[isP0,i] < MinX then MinX := PLines[isP0,i];

if PLines[isP2,i] < MinY then MinY := PLines[isP2,i];

end;

if MaxX > 200 then Nx := 100 else Nx := 10;

MaxX := Round(MaxX/Nx)*Nx+Nx;

if MaxY > 200 then Ny := 100 else Ny := 10;

MaxY := Round(MaxY/Ny)*Ny+Ny;

with DrawForm do begin

Canvas.Pen.Color := clBlack;

R.Left := 10;

R.Top := 10;

R.Right := Width - 15;

R.Bottom := Height - 70;

Canvas.FrameRect(R);

Canvas.Brush.Color := clBtnFace;

Kx := (R.Right - R.Left - 80)/MaxX;

Ky := (R.Bottom - R.Top - 80)/MaxY;

{Ось Po}

Canvas.MoveTo(R.Left+10,R.Bottom-30);

Canvas.LineTo(R.Right-10,R.Bottom-30);

{Ось P2}

Canvas.MoveTo(R.Left+60,R.Top+30);

Canvas.LineTo(R.Left+60,R.Bottom-30);

i := 0;

while i*Nx<MaxX do begin

Inc(i);

Canvas.MoveTo(R.Left+60+Round(Kx*i*Nx),R.Bottom-33);

Canvas.LineTo(R.Left+60+Round(Kx*i*Nx),R.Bottom-27);

Canvas.TextOut(R.Left+50+Round(Kx*i*Nx), R.Bottom-20,

IntToStr(i*Nx));

end;

i := 0;

while i*Ny<MaxY do begin

Inc(i);

Canvas.MoveTo(R.Left+63,R.Bottom-30-Round(Ky*i*Ny));

Canvas.LineTo(R.Left+57,R.Bottom-30-Round(Ky*i*Ny));

Canvas.TextOut(R.Left+30, R.Bottom-35-Round(Ky*i*Ny),

IntToStr(i*Ny));

end;

if PLines[isP0,1] > PLines[isP0,4] then

PointMax := PLines[isP0,4]

else PointMax := PLines[isP0,1];

if PLines[isP0,2] > PLines[isP0,5] then

PointMin := PLines[isP0,2]

else PointMin := PLines[isP0,5];

if PointMin < 0 then PointMin := 0.0;

DrawLine(PLines[isP0,1],

-(PLines[isP2,1]/PLines[isP0,1]),PLines[isP2,1]);

DrawLine(PLines[isP0,2],

-(PLines[isP2,2]/PLines[isP0,2]),PLines[isP2,2]);

DrawLine(0,1,0);

DrawLine(PLines[isP0,4],

-(PLines[isP2,4]/PLines[isP0,4]),PLines[isP2,4]);

DrawLine(PLines[isP0,5],

-(PLines[isP2,5]/PLines[isP0,5]),PLines[isP2,5]);

Canvas.Brush.Color := clGreen;

Canvas.FloodFill(Round((((PointMax-PointMin)/2)*Kx)+R.Left+60),

R.Bottom-55, clBlack, fsBorder);

Canvas.Brush.Color := clBtnFace;

Canvas.TextOut(R.Right-80, R.Bottom-50, 'P0, TC/M*2');

Canvas.TextOut(R.Left+20, R.Top+10, 'P2, TC/M*2');

end;

end;

end.

unit Edittub;

interface

uses

SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics,

Controls,Forms, Dialogs, DBFilter, DB, DBTables, Grids, DBGrids,

RXLookup, ExtCtrls, DBCtrls;

type

TEditDataForm = class(TForm)

Panel1: TPanel;

rxDBLookupCombo1: TrxDBLookupCombo;

TableSTUFF: TTable;

DataSourceSTUFF: TDataSource;

DBGrid1: TDBGrid;

DataSourceDATA: TDataSource;

TableDATA: TTable;

TableDATAMass: TFloatField;

TableDATAR_press: TFloatField;

TableDATAR_stretch: TFloatField;

TableDATAPuasson: TFloatField;

TableDATAR1: TFloatField;

TableDATARb: TFloatField;

TableDATAR: TFloatField;

TableDATAA: TFloatField;

TableDATAB: TFloatField;

rxDBFilter1: TrxDBFilter;

TableDATAStuff: TSmallintField;

DBNavigator1: TDBNavigator;

procedure rxDBLookupCombo1Change(Sender: TObject);

procedure DBNavigator1Click(Sender: TObject; Button:

TNavigateBtn);

procedure DBGrid1DblClick(Sender: TObject);

private

{ Private declarations }

public

{ Public declarations }

end;

var

EditDataForm: TEditDataForm;

implementation

{$R *.DFM}

uses

EditForm;

procedure TEditDataForm.rxDBLookupCombo1Change(Sender: TObject);

var

S: String;

begin

rxDBFilter1.Deactivate;

rxDBFilter1.Filter.Clear;

s:='Stuff = '+TableSTUFF.FieldByName('Code').AsString;

rxDBFilter1.Filter.Add(S);

rxDBFilter1.Activate;

end;

procedure TEditDataForm.DBNavigator1Click(Sender: TObject; Button:

TNavigateBtn);

begin

case Button of

nbInsert:

begin

EditDataTub(TableDATA, True,

TableSTUFF.FieldByName('Code').AsInteger);

end;

nbEdit:

begin

EditDataTub(TableDATA, False,

TableSTUFF.FieldByName('Code').AsInteger);

end;

end;

end;

procedure TEditDataForm.DBGrid1DblClick(Sender: TObject);

begin

EditDataTub(TableDATA, False,

TableSTUFF.FieldByName('Code').AsInteger);

end;

end.

unit Editform;

interface

uses

SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics,

Controls, Forms, Dialogs, StdCtrls, Mask, DBCtrls, ExtCtrls, DB,  

DBTables, Buttons;

type

TEdTubForm = class(TForm)

DataSource1: TDataSource;

Panel1: TPanel;

DBEdit1: TDBEdit;

Label1: TLabel;

Label2: TLabel;

Label3: TLabel;

DBEdit2: TDBEdit;

DBEdit3: TDBEdit;

Label4: TLabel;

Label5: TLabel;

Label6: TLabel;

DBEdit4: TDBEdit;

DBEdit5: TDBEdit;

DBEdit6: TDBEdit;

Label7: TLabel;

DBEdit7: TDBEdit;

Label8: TLabel;

Label9: TLabel;

Panel2: TPanel;

Panel3: TPanel;

DBEdit8: TDBEdit;

DBEdit9: TDBEdit;

BitBtn1: TBitBtn;

BitBtn2: TBitBtn;

Table1: TTable;

Label10: TLabel;

DBText1: TDBText;

DataSource2: TDataSource;

Query1: TQuery;

Query1Material: TStringField;

procedure FormCreate(Sender: TObject);

public

FCode: Integer;

function EditTub( Table: TTable; IsNew: Boolean; Code: Integer):

Boolean;

end;

var

EdTubForm: TEdTubForm;

function EditDataTub(Table: TTable; IsNew: Boolean; Code: Integer):

Boolean;

implementation

{$R *.DFM}

function EditDataTub(Table: TTable; IsNew: Boolean; Code: Integer):

Boolean;

begin

Result := False;

with TEdTubForm.Create(Application) do

try

FCode := Code;

Result := EditTub(Table, IsNew, Code);

finally

Free;

end;

end;

function TEdTubForm.EditTub(Table: TTable; IsNew: Boolean; Code:

Integer): Boolean;

begin

if Table <> nil then

DataSource1.DataSet := Table

else begin

Table1.Open;

DataSource1.DataSet := Table1;

end;

if IsNew then begin

DataSource1.DataSet.Append;

DataSource1.DataSet.FieldByName('Stuff').AsInteger := Code;

end

else DataSource1.DataSet.Edit;

Result := ShowModal = mrOk;

if Result then

DataSource1.DataSet.Post

else

DataSource1.DataSet.Cancel;

end;

procedure TEdTubForm.FormCreate(Sender: TObject);

begin

Query1.Active := False;

Query1.ParamByName('St').AsInteger := FCode;

Query1.Active := True;

end;

end.

unit EditUser;

interface

uses

SysUtils, WinTypes, WinProcs, Classes, Graphics, Forms, Controls,

Buttons, StdCtrls, ExtCtrls, DBCtrls, Mask, DB, DBTables;

type

TEditUserDialog = class(TForm)

OKBtn: TBitBtn;

CancelBtn: TBitBtn;

UsersTable: TTable;

dsUsers: TDataSource;

NameEdit: TDBEdit;

FullNameEdit: TDBEdit;

GroupBox: TGroupBox;

PasswordEdit: TDBEdit;

ConfirmPassword: TEdit;

Label1: TLabel;

Label2: TLabel;

LevelGroup: TDBRadioGroup;

procedure OKBtnClick(Sender: TObject);

procedure CancelBtnClick(Sender: TObject);

procedure FormHide(Sender: TObject);

private

{ Private declarations }

public

{ Public declarations }

function EditUser(const UserName: string; Table: TTable; IsNew:

Boolean): Boolean;

end;

var

EditUserDialog: TEditUserDialog;

function EditUserData(const UserName: string; Table: TTable;

 IsNew: Boolean): Boolean;

implementation

uses

Global, Crypt;

{$R *.DFM}

const

SNotFound = 'Записей не обнаружено';

SNoConfirmPassword = 'Вы ввели разные пароли. Проверьте

правильность ввода';

 

function EditUserData(const UserName: string; Table: TTable;

 IsNew: Boolean): Boolean;

var

SUName: string;

begin

Result := False;

SUName := UserName;

if glUserLevel <> ulAdministrator then begin

Table := nil;

SUName := glUserName;

end;

with TEditUserDialog.Create(Application) do

try

Result := EditUser(SUName, Table, IsNew);

finally

Free;

end;

end;

{ TEditUserDialog }

function TEditUserDialog.EditUser(const UserName: string; Table:

Ttable; IsNew: Boolean): Boolean;

begin

NameEdit.Enabled := (glUserLevel = ulAdministrator);

LevelGroup.Enabled := (glUserLevel = ulAdministrator);

if Table <> nil then begin

dsUsers.DataSet := Table;

UsersTable.Close;

end

else begin

UsersTable.Open;

if UserName <> '' then begin

if not UsersTable.FindKey([UserName]) then

raise Exception.Create(SNotFound);

end;

dsUsers.DataSet := UsersTable;

end;

if IsNew then dsUsers.DataSet.Append

else dsUsers.DataSet.Edit;

ConfirmPassword.Text := PasswordEdit.Text;

Result := ShowModal = mrOk;

end;

procedure TEditUserDialog.OKBtnClick(Sender: TObject);

begin

if PasswordEdit.Text <> ConfirmPassword.Text then

raise Exception.Create(SNoConfirmPassword);

dsUsers.DataSet.Post;

ModalResult := mrOk;

end;

procedure TEditUserDialog.CancelBtnClick(Sender: TObject);

begin

dsUsers.DataSet.Cancel;

ModalResult := mrCancel;

end;

procedure TEditUserDialog.FormHide(Sender: TObject);

begin

dsUsers.DataSet.Cancel;

UsersTable.Close;

end;

end.

unit Global;

interface

type

TUserLevel = (ulInvalid, ulOperator, ulManager, ulAdministrator);

const

InvalidID = 0;

glUserLevel: TUserLevel = ulInvalid;

glUserName: string = '';

glUserID: Longint = InvalidID;

function cUserLevel(Code: Longint): TUserLevel;

implementation

function cUserLevel(Code: Longint): TUserLevel;

begin

Result := ulInvalid;

if (Code in [Integer(Low(TUserLevel))..Integer(High(TUserLevel))]) then

Result := TUserLevel(Code);

end;

end.

 

unit Global;

interface

type

TUserLevel = (ulInvalid, ulOperator, ulManager, ulAdministrator);

const

InvalidID = 0;

glUserLevel: TUserLevel = ulInvalid;

glUserName: string = '';

glUserID: Longint = InvalidID;

function cUserLevel(Code: Longint): TUserLevel;

implementation

function cUserLevel(Code: Longint): TUserLevel;

begin

Result := ulInvalid;

if (Code in [Integer(Low(TUserLevel))..Integer(High(TUserLevel))]) then

Result := TUserLevel(Code);

end;

end.

 

unit Main;

interface

uses

SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics,

Controls, Forms, Dialogs, SpeedBar, Menus, ExtCtrls, Placemnt, DB,

DBSecur, DBTables;

type

TStaftForm = class(TForm)

SpeedBar: TSpeedBar;

ExitItem: TSpeedItem;

MainMenu: TMainMenu;

FileMenu: TMenuItem;

InsuranceMenuItem: TMenuItem;

FileMenuSeperator: TMenuItem;

PrinterSetupMenuItem: TMenuItem;

ExitMenuItem: TMenuItem;

DictSetupMenu: TMenuItem;

UserMenuItem: TMenuItem;

WindowMenu: TMenuItem;

TileMenuItem: TMenuItem;

CascadeMenuItem: TMenuItem;

MinimizeAllMenuItem: TMenuItem;

ArrangeAllMenuItem: TMenuItem;

HelpMenu: TMenuItem;

HelpContentsMenuItem: TMenuItem;

HelpMenuSeparator: TMenuItem;

AboutMenuItem: TMenuItem;

ChangePasswordItem: TSpeedItem;

PrintSetupItem: TSpeedItem;

CalcItem: TSpeedItem;

PrinterSetup: TPrinterSetupDialog;

TileWindowsItem: TSpeedItem;

CascadeWindowsItem: TSpeedItem;

HintPanel: TPanel;

DBSecurity1: TDBSecurity;

Database1: TDatabase;

EditItem: TMenuItem;

FormPlacement: TFormPlacement;

procedure ArrangeAllMenuItemClick(Sender: TObject);

procedure TileMenuItemClick(Sender: TObject);

procedure CascadeMenuItemClick(Sender: TObject);

procedure MinimizeAllMenuItemClick(Sender: TObject);

procedure AboutMenuItemClick(Sender: TObject);

procedure PrinterSetupMenuItemClick(Sender: TObject);

procedure ExitMenuItemClick(Sender: TObject);

procedure FormStorageRestorePlacement(Sender: TObject);

procedure FormStorageSavePlacement(Sender: TObject);

function DBSecurity1CheckUser(UsersTable: TTable;

const

Password: String): Boolean;

procedure UserMenuItemClick(Sender: TObject);

procedure FormCreate(Sender: TObject);

procedure FormDestroy(Sender: TObject);

procedure InsuranceMenuItemClick(Sender: TObject);

procedure ShowHint(Sender: TObject);

procedure EditItemClick(Sender: TObject);

private

procedure SetUserLevel;

procedure UpdateMenuItems(Sender: TObject);

function ShowForm(FormClass: TFormClass): TForm;

end;

var

StaftForm: TStaftForm;

implementation

uses

About, rxIni, VCLUtils, Global, AppUtils, EditUser, UserList,

EditTub, Calc1;

{$R *.DFM}

const

siMDIChilds = 'OpenMDIChilds';

procedure TStaftForm.SetUserLevel;

begin

case glUserLevel of

ulOperator:

begin

DictSetupMenu.Visible := False;

DictSetupMenu.Enabled := False;

UserMenuItem.Visible := False;

UserMenuItem.Enabled := False;

end;

ulManager:

begin

DictSetupMenu.Visible := True;

DictSetupMenu.Enabled := True;

UserMenuItem.Visible := False;

UserMenuItem.Enabled := False;

end;

ulAdministrator:

begin

DictSetupMenu.Visible := True;

DictSetupMenu.Enabled := True;

UserMenuItem.Visible := True;

UserMenuItem.Enabled := True;

end;

end;

end;

procedure TStaftForm.TileMenuItemClick(Sender: TObject);

begin

Tile;

end;

procedure TStaftForm.CascadeMenuItemClick(Sender: TObject);

begin

Cascade;

end;

procedure TStaftForm.MinimizeAllMenuItemClick(Sender: TObject);

var

I: Integer;

begin

for I := MDIChildCount - 1 downto 0 do

MDIChildren[I].WindowState := wsMinimized;

end;

procedure TStaftForm.ArrangeAllMenuItemClick(Sender: TObject);

begin

ArrangeIcons;

end;

procedure TStaftForm.AboutMenuItemClick(Sender: TObject);

begin

ShowAboutDialog('Расчет тюбинговой обделки', 'Королев А.В.',

'МГГУ', nil, 1, 0, 1996);

end;

procedure TStaftForm.PrinterSetupMenuItemClick(Sender: TObject);

begin

PrinterSetup.Execute;

end;

procedure TStaftForm.ExitMenuItemClick(Sender: TObject);

begin

Close;

end;

function TStaftForm.ShowForm(FormClass: TFormClass): TForm;

var

Form: TForm;

begin

Result := nil;

StartWait;

try

Form := FindForm(FormClass);

if Form = nil then

Application.CreateForm(FormClass, Form);

with Form do begin

if WindowState = wsMinimized then WindowState := wsNormal;

Show;

end;

Result := Form;

finally

StopWait;

end;

end;

procedure TStaftForm.FormStorageRestorePlacement(Sender: TObject);

var

IniFile: TrxIniFile;

List: TStrings;

I: Integer;

FormClass: TFormClass;

Form: TForm;

begin

StartWait;

try

SpeedBar.Visible := True;

IniFile := TrxIniFile.Create(FormPlacement.IniFileName);

try

if (glUserLevel in [ulManager, ulAdministrator]) then begin

List := TStringList.Create;

try

IniFile.ReadList(siMDIChilds, List);

for I := 0 to List.Count - 1 do begin

FormClass := TFormClass(GetClass(List[I]));

if FormClass <> nil then ShowForm(FormClass);

end;

finally

List.Free;

end;

end;

finally

IniFile.Free;

end;

finally

StopWait;

end;

end;

procedure TStaftForm.FormStorageSavePlacement(Sender: TObject);

var

IniFile: TrxIniFile;

List: TStrings;

I: Integer;

begin

IniFile := TrxIniFile.Create(FormPlacement.IniFileName);

try

IniFile.EraseSection(siMDIChilds);

List := TStringList.Create;

try

for I := MDIChildCount - 1 downto 0 do

List.Add(MDIChildren[I].ClassName);

if List.Count > 0 then

IniFile.WriteList(siMDIChilds, List);

finally

List.Free;

end;

finally

IniFile.Free;

end;

end;

function TStaftForm.DBSecurity1CheckUser(UsersTable: TTable;

const

Password: String): Boolean;

begin

Result := (Password = UsersTable.FieldByName('Password').AsString);

if Result then begin

glUserName := UsersTable.FieldByName('UserName').AsString;

glUserID := UsersTable.FieldByName('ID').AsInteger;

glUserLevel := cUserLevel(UsersTable.FieldByName('UserLevel')

.AsInteger);

Result := (glUserLevel <> ulInvalid);

end;

if Result then SetUserLevel;

end;

procedure TStaftForm.UserMenuItemClick(Sender: TObject);

begin

ShowForm(TUserListForm);

end;

procedure TStaftForm.ShowHint(Sender: TObject);

begin

HintPanel.Caption := Application.Hint;

end;

procedure TStaftForm.UpdateMenuItems(Sender: TObject);

begin

{ Enable or disable menu items and buttons }

CascadeMenuItem.Enabled := MDIChildCount > 0;

TileMenuItem.Enabled := MDIChildCount > 0;

ArrangeAllMenuItem.Enabled := MDIChildCount > 0;

MinimizeAllMenuItem.Enabled := MDIChildCount > 0;

TileWindowsItem.Enabled := MDIChildCount > 0;

CascadeWindowsItem.Enabled := MDIChildCount > 0;

end;

procedure TStaftForm.FormCreate(Sender: TObject);

begin

Application.OnHint := ShowHint;

Screen.OnActiveFormChange := UpdateMenuItems;

SetAutoSubClass(True);

{ set wait cursor to SQL }

WaitCursor := crSQLWait;

{ register classes of MDI-child forms }

{RegisterClasses([TDictForm, TRatesForm, TItemReportForm]);}

end;

procedure TStaftForm.FormDestroy(Sender: TObject);

begin

Screen.OnActiveFormChange := nil;

Application.HelpCommand(HELP_QUIT,0);

end;

procedure TStaftForm.InsuranceMenuItemClick(Sender: TObject);

begin

Form1.ShowModal;

end;

procedure TStaftForm.EditItemClick(Sender: TObject);

begin

EditDataForm.Show;

end;

end.

unit UserList;

interface

uses

SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics,

Controls, Forms, Dialogs, DBCtrls, ExtCtrls, DBTables, DB, Grids,

DBGrids, RXDBCtrl, Placemnt, StdCtrls, Buttons;

type

TUserListForm = class(TForm)

UsersTable: TTable;

dsUsers: TDataSource;

UsersGrid: TrxDBGrid;

UsersTablePassword: TStringField;

Panel1: TPanel;

DBNavigator: TDBNavigator;

FormPlacement: TFormPlacement;

UsersTableID: TFloatField;

UsersTableUserName: TStringField;

UsersTableFullName: TStringField;

UsersTableUserLevel: TFloatField;

BitBtn1: TBitBtn;

procedure DBNavigatorClick(Sender: TObject; Button:

TNavigateBtn);

procedure UsersGridDblClick(Sender: TObject);

procedure FormPlacementSavePlacement(Sender: TObject);

procedure FormPlacementRestorePlacement(Sender: TObject);

procedure FormCreate(Sender: TObject);

procedure FormClose(Sender: TObject; var Action: TCloseAction);

end;

var

UserListForm: TUserListForm;

implementation

uses

EditUser, IniFiles, Global;

const

SAccessDenied = 'Недостаточно прав. Доступ запрещен';

{$R *.DFM}

procedure TUserListForm.DBNavigatorClick(Sender: TObject;

Button: TNavigateBtn);

begin

case Button of

nbInsert:

begin

EditUserData('', UsersTable, True);

end;

nbEdit:

begin

EditUserData('', UsersTable, False);

end;

end;

end;

procedure TUserListForm.UsersGridDblClick(Sender: TObject);

begin

EditUserData('', UsersTable, False);

end;

procedure TUserListForm.FormPlacementSavePlacement(Sender: TObject);

var

IniFile: TIniFile;

I: Integer;

begin

IniFile := TIniFile.Create(FormPlacement.IniFileName);

try

for I := 0 to ComponentCount - 1 do begin

if Components[I] is TrxDBGrid then

TrxDBGrid(Components[I]).SaveLayout(IniFile);

end;

finally

IniFile.Free;

end;

end;

procedure TUserListForm.FormPlacementRestorePlacement(Sender:

TObject);

var

IniFile: TIniFile;

I: Integer;

begin

IniFile := TIniFile.Create(FormPlacement.IniFileName);

try

for I := 0 to ComponentCount - 1 do begin

if Components[I] is TrxDBGrid then

TrxDBGrid(Components[I]).RestoreLayout(IniFile);

end;

finally

IniFile.Free;

end;

end;

procedure TUserListForm.FormCreate(Sender: TObject);

begin

if not (glUserLevel in [ulAdministrator]) then begin

raise Exception.Create(SAccessDenied);

end;

UsersTable.Open;

end;

procedure TUserListForm.FormClose(Sender: TObject;

var

Action: TCloseAction);

begin

Action := caFree;

end;

end.

program Shaft;

uses

Forms,

Main in 'MAIN.PAS' {StaftForm},

Global in 'GLOBAL.PAS',

EditUser in 'EDITUSER.PAS',

UserList in 'USERLIST.PAS' {UserListForm},

Edittub in 'EDITTUB.PAS' {EditDataForm},

Editform in 'EDITFORM.PAS' {EdTubForm},

Calc1 in 'CALC1.PAS' {Form1},

Draw in 'DRAW.PAS' {DrawForm};

{$R *.RES}

begin

Application.CreateForm(TStaftForm, StaftForm);

Application.CreateForm(TEditDataForm, EditDataForm);

Application.CreateForm(TEdTubForm, EdTubForm);

Application.CreateForm(TForm1, Form1);

Application.CreateForm(TDrawForm, DrawForm);

Application.Run;

end.

5. Список использованной литературы.

1. Баклашов И.В., Картозия Б.А. “Механика подземных сооружений и конструкций крепей” - М., Недра, 1992, 543 с.

2. Насонов И.Д., Федюкин В.А., Шуплик М.Н., “Технология строительства подземных сооружений” - М., Недра, 1992, 285 с.

3. Насонов И.Д., Шуплик М.Н. “Закономерности формирования ледопородных ограждений при сооружении стволов шахт” - М., Недра, 1976, 237 с.

4. Храпов В.Г. “Тоннели и метрополитены” - М., Транспорт, 1989, 383 с.

5. Белый В.В. “Справочник инженера шахтостроителя” в 2-х томах - М., 1983

6. Туренский Н.Г., Ледяев А.П. “Строительство тоннелей и метрополитенов” - М., Транспорт, 1992, 264 с.

7. Богомолов Г.М., Голицынский Д.М. Сеславинский С.И. “Справочник инженера тоннельщика” - М., Транспорт, 1993, 389 с.