1. Soal : Balok menerus (gambar di bawah); E=2e6 ton/m2; Dimensi balok 40x70 cm (L=8m) dan 40x50 (L=6m dan L=7m)
2. Pemodelan dan Persiapan Data :
Batang 1 : A=0.4*0.7 = 0.28m2; I=0.011433 m4
Batang 2,3,4 : A=0.4*0.5=0.20m2; I=0.004167 m3;
Restraints :
Titik 1 : 1,1,1 (jepit)
Titik 2,3,4,5 : 1,1,0 (sendi)
Pembebanan :
Gaya & Momen Primer :
Batang 1 :
Batang 2 :
Batang 3 :
Batang 4 :
3. INPUT DATA :
%****PORTAL 2D---TEKNIK SIPIL UNISSULA SEMARANG----
%****nama file : BALOKMENERUS----oleh :sumirin 1/11/2011----
%****struktur : blk menerus di atas 5 tumpuan, beban merata variasi
clear all
clc
%****General Data---
type='p2d'
nfile='BALOKMENERUS'
%****Property---i,E,A,I---
prop = [ 1 2.0e6 0.28 0.011433
2 2.0e6 0.20 0.004167];
%****Coordinates---
%****--- Joint X Y ---
coord=[ 1 0 0
2 8 0
3 14 0
4 20 0
5 27 0 ];
%****Element data---
%****--- Element J1 J2 prop---
element=[ 1 1 2 1
2 2 3 2
3 3 4 2
4 4 5 2];
%****Nodal Restraint---
%****---- Joint JR1 JR2 JR3---
Support=[ 1 1 1 1
2 1 1 0
3 1 1 0
4 1 1 0
5 1 1 0];
%****Joint Load---
%****---Joint FX FY MZ---
JL=[ 1 0 0 0 ];
%****Load Data---
Ra1=7.5; Rb1=7.5;
Ma1=15; Mb1=-15;
Ra2=2.7; Rb2=6.3;
Ma2=3.6; Mb2=-5.4;
Ra3=6; Rb3=6;
Ma3=7.5; Mb3=-7.5;
Ra4=7; Rb4=7;
Ma4=8.167; Mb4=-8.167;
%****
AML=[ 1 0 Ra1 Ma1 0 Rb1 Mb1
2 0 Ra2 Ma2 0 Rb2 Mb2
3 0 Ra3 Ma3 0 Rb3 Mb3
4 0 Ra4 Ma4 0 Rb4 Mb4 ];
%****Call function for analysis portal 2d--------------------
[dof,index,coord,element]=FRAME2D_sdata(prop,element,coord,type);
[S,Sm,SmS,Cx,Cy,RT,L,A,Joint,Xj,Xk,Yj,Yk]=FRAME2D_stiff...
(prop,element,coord,index,nfile);
[IR,IF,Support]=FRAME2D_ldata(Support,dof);
[DF,AR,AM]=FRAME2D_analysis_result...
(element,dof,index,IF,IR,S,Sm,JL,AML,RT,Support,type,nfile);
[joint_disp,support_reaction,beam_endforces]=FRAME2D_print_result...
(JL,AML,dof,Support,element,IF,IR,DF,AR,AM,type,nfile);
%****end data------------------------------------------------
%
FRAME2D_xplot
%
4. Kontrol Kesetimbangan :
Support Reactions :
Joint Rx Ry Mz
1 0.0000e+000 9.0284e+000 1.9076e+001
2 0.0000e+000 9.3054e+000 0.0000e+000
3 0.0000e+000 1.0695e+001 0.0000e+000
4 0.0000e+000 1.5495e+001 0.0000e+000
5 0.0000e+000 5.4756e+000 0.0000e+000
Jumlah Gaya Arah X : Px+Rx=0 0+0=0 ... ok!!!
Jumlah Gaya Arah Y : Py+Ry=0
Py= 15 + (3*6/2) + (4*6/2) + (7*2) = 50 ton
Ry=9.0284 + 9.3054 + 10.695 + 15.495 + 5.4756 = 49.994 ~ 50 ...ok!
5. OUTPUT PROGRAM
STIFFNESS MATRIX METHOD : PROGRAM FRAME2D
File Name : BALOKMENERUS_2.txt
Joint Loads :
Joint Fx Fy Mz
1 0.000 0.000 0.000
Member Loads :
Member Fx1 Fy1 Mz1 Fx2 Fy2 Mz2
1 0.000 7.500 15.000 0.000 7.500 -15.000
2 0.000 2.700 3.600 0.000 6.300 -5.400
3 0.000 6.000 7.500 0.000 6.000 -7.500
4 0.000 7.000 8.167 0.000 7.000 -8.167
Support Restraints :
Joint Dx Dy Rz
1 1 1 1
2 1 1 0
3 1 1 0
4 1 1 0
5 1 1 0
Joint Displacements :
Joint Dx Dy Rz
1 0.0000e+000 0.0000e+000 0.0000e+000
2 0.0000e+000 0.0000e+000 7.1299e-004
3 0.0000e+000 0.0000e+000 -2.5665e-004
4 0.0000e+000 0.0000e+000 -4.4234e-004
5 0.0000e+000 0.0000e+000 1.9361e-003
Support Reactions :
Joint Rx Ry Mz
1 0.0000e+000 9.0284e+000 1.9076e+001
2 0.0000e+000 9.3054e+000 0.0000e+000
3 0.0000e+000 1.0695e+001 0.0000e+000
4 0.0000e+000 1.5495e+001 0.0000e+000
5 0.0000e+000 5.4756e+000 0.0000e+000
Member End Forces :
Member Fx1 Fy1 Mz1 Fx2 Fy2 Mz2
1 0.000 9.028 19.076 0.000 5.972 -6.848
2 0.000 3.334 6.848 0.000 5.666 -4.845
3 0.000 5.029 4.845 0.000 6.971 -10.671
4 0.000 8.524 10.671 0.000 5.476 -0.000
<<< end of file >>>
6. FREE BODY DIAGRAM DAN GAMBAR BIDANG M-D
Batang 1 :
Batang 2 :
Batang 2,3,4 : A=0.4*0.5=0.20m2; I=0.004167 m3;
Restraints :
Titik 1 : 1,1,1 (jepit)
Titik 2,3,4,5 : 1,1,0 (sendi)
Pembebanan :
Gaya & Momen Primer :
Batang 1 :
Batang 2 :
Batang 3 :
Batang 4 :
3. INPUT DATA :
%****PORTAL 2D---TEKNIK SIPIL UNISSULA SEMARANG----
%****nama file : BALOKMENERUS----oleh :sumirin 1/11/2011----
%****struktur : blk menerus di atas 5 tumpuan, beban merata variasi
clear all
clc
%****General Data---
type='p2d'
nfile='BALOKMENERUS'
%****Property---i,E,A,I---
prop = [ 1 2.0e6 0.28 0.011433
2 2.0e6 0.20 0.004167];
%****Coordinates---
%****--- Joint X Y ---
coord=[ 1 0 0
2 8 0
3 14 0
4 20 0
5 27 0 ];
%****Element data---
%****--- Element J1 J2 prop---
element=[ 1 1 2 1
2 2 3 2
3 3 4 2
4 4 5 2];
%****Nodal Restraint---
%****---- Joint JR1 JR2 JR3---
Support=[ 1 1 1 1
2 1 1 0
3 1 1 0
4 1 1 0
5 1 1 0];
%****Joint Load---
%****---Joint FX FY MZ---
JL=[ 1 0 0 0 ];
%****Load Data---
Ra1=7.5; Rb1=7.5;
Ma1=15; Mb1=-15;
Ra2=2.7; Rb2=6.3;
Ma2=3.6; Mb2=-5.4;
Ra3=6; Rb3=6;
Ma3=7.5; Mb3=-7.5;
Ra4=7; Rb4=7;
Ma4=8.167; Mb4=-8.167;
%****
AML=[ 1 0 Ra1 Ma1 0 Rb1 Mb1
2 0 Ra2 Ma2 0 Rb2 Mb2
3 0 Ra3 Ma3 0 Rb3 Mb3
4 0 Ra4 Ma4 0 Rb4 Mb4 ];
%****Call function for analysis portal 2d--------------------
[dof,index,coord,element]=FRAME2D_sdata(prop,element,coord,type);
[S,Sm,SmS,Cx,Cy,RT,L,A,Joint,Xj,Xk,Yj,Yk]=FRAME2D_stiff...
(prop,element,coord,index,nfile);
[IR,IF,Support]=FRAME2D_ldata(Support,dof);
[DF,AR,AM]=FRAME2D_analysis_result...
(element,dof,index,IF,IR,S,Sm,JL,AML,RT,Support,type,nfile);
[joint_disp,support_reaction,beam_endforces]=FRAME2D_print_result...
(JL,AML,dof,Support,element,IF,IR,DF,AR,AM,type,nfile);
%****end data------------------------------------------------
%
FRAME2D_xplot
%
4. Kontrol Kesetimbangan :
Support Reactions :
Joint Rx Ry Mz
1 0.0000e+000 9.0284e+000 1.9076e+001
2 0.0000e+000 9.3054e+000 0.0000e+000
3 0.0000e+000 1.0695e+001 0.0000e+000
4 0.0000e+000 1.5495e+001 0.0000e+000
5 0.0000e+000 5.4756e+000 0.0000e+000
Jumlah Gaya Arah X : Px+Rx=0 0+0=0 ... ok!!!
Jumlah Gaya Arah Y : Py+Ry=0
Py= 15 + (3*6/2) + (4*6/2) + (7*2) = 50 ton
Ry=9.0284 + 9.3054 + 10.695 + 15.495 + 5.4756 = 49.994 ~ 50 ...ok!
5. OUTPUT PROGRAM
STIFFNESS MATRIX METHOD : PROGRAM FRAME2D
File Name : BALOKMENERUS_2.txt
Joint Loads :
Joint Fx Fy Mz
1 0.000 0.000 0.000
Member Loads :
Member Fx1 Fy1 Mz1 Fx2 Fy2 Mz2
1 0.000 7.500 15.000 0.000 7.500 -15.000
2 0.000 2.700 3.600 0.000 6.300 -5.400
3 0.000 6.000 7.500 0.000 6.000 -7.500
4 0.000 7.000 8.167 0.000 7.000 -8.167
Support Restraints :
Joint Dx Dy Rz
1 1 1 1
2 1 1 0
3 1 1 0
4 1 1 0
5 1 1 0
Joint Displacements :
Joint Dx Dy Rz
1 0.0000e+000 0.0000e+000 0.0000e+000
2 0.0000e+000 0.0000e+000 7.1299e-004
3 0.0000e+000 0.0000e+000 -2.5665e-004
4 0.0000e+000 0.0000e+000 -4.4234e-004
5 0.0000e+000 0.0000e+000 1.9361e-003
Support Reactions :
Joint Rx Ry Mz
1 0.0000e+000 9.0284e+000 1.9076e+001
2 0.0000e+000 9.3054e+000 0.0000e+000
3 0.0000e+000 1.0695e+001 0.0000e+000
4 0.0000e+000 1.5495e+001 0.0000e+000
5 0.0000e+000 5.4756e+000 0.0000e+000
Member End Forces :
Member Fx1 Fy1 Mz1 Fx2 Fy2 Mz2
1 0.000 9.028 19.076 0.000 5.972 -6.848
2 0.000 3.334 6.848 0.000 5.666 -4.845
3 0.000 5.029 4.845 0.000 6.971 -10.671
4 0.000 8.524 10.671 0.000 5.476 -0.000
<<< end of file >>>
6. FREE BODY DIAGRAM DAN GAMBAR BIDANG M-D
Batang 1 :
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