ABCDEFGHIJKLMNOPQRSTUVWXYZ
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Doha International Airport
DAR AL-HANDASAH CONSULTANTS
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Q0073/2
Shair and Partners
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4
DESIGN OF PRECAST PRESTRESSED COMPOSITE BEAMS
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CHECK OF CRITICAL SECTION
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(All Units are MN and m)
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 INPUT
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A-PROPERTIES OF MID SPAN SECTION
B- LOADING
9
10
PRECAST SECTION
M OWBeam
0,429
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DEPTH=0,525
M OWDeck
0,183
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AREA=0,361M SDL0,000
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Y1=-0,232M LL 0,488
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Y2=0,293
Final Losses
0,150
15
INERTIA=0,01296
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Z1=-0,056
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Z2=0,044
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COMPOSITE SECTION
C- ALLOWABLE STRESSES
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AREA=0,492
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Y1(m)=-0,160Ftt-3,5
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Y2(m)=0,365Fct19,2
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Y3(m)=-0,160Ftw-3,15
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Y4(m)=-0,235Fcw21
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INERTIA=0,020
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Z1=-0,125
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Z2=0,055
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Z3=-0,125
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Z4=-0,085
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 OUTPUT
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A- ECCENTRCITIES FOR A PRESTRESSING FORCE
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(Pt is prestressing force after initial losses)
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Pte1 e2 e3 e4 emin emax
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3,60,32820,23250,04260,16070,16070,2325
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inside feasible range
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B- LIMITING PRESTRESSING FORCES
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Ptmin =1,425Ptmax =6,0661,424652033
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C- NORMAL STRESSES
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Pt=3,6
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input e=0,203
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St1St2St3
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 f1 4,578,3112,22
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 f2 16,808,68-0,22
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 f3 3,90
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 f4 5,73
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D- PRESTRESSING FORCE vs ECCENTRCITY
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Pt 1/Pt e1 e2 e
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1,4250,70192578740,59310732970,77471428750,5931073297
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1,8890,52945128740,48539403080,55424772770,4853940308
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2,3530,42501760030,42017339260,42075474330,4201733926
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2,8170,35499518790,37644318870,33124817650,3312481765
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3,2810,30478183380,34508408340,26706265670,2670626567
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3,7450,26701333540,3214970050,21878484810,2187848481
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4,2090,23757330350,30311119740,18115295150,1811529515
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4,6730,21398050140,28837708570,15099531120,1509953112
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5,1370,19465027620,27630502680,12628633540,1262863354
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5,6020,17852314080,26623335270,10567172830,1056717283
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6,0660,16486386470,25770289930,088211677090,08821167709
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5,6020,17852314080,08269946930,059483021390,0826994693
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5,1370,19465027620,076191355650,075925107640,07619135565
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4,6730,21398050140,068390633470,095632837640,09563283764
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4,2090,23757330350,058869746210,11968638950,1196863895
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3,7450,26701333540,046989206390,14970136320,1497013632
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3,2810,30478183380,031747709740,18820745210,1882074521
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2,8170,35499518790,011484085230,23940143530,2394014353
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2,3530,4250176003-0,01677349480,3107913330,310791333
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1,8890,5294512874-0,058917762210,41726453190,4172645319
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1,4250,7019257874-0,12851993410,59310732970,5931073297
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II CHECKING CABLE PROFILE
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Pt 3,6Span19,5
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Straining Actions
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Sec.12345678910
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Dist.0,001,002,003,004,005,006,007,008,009,75
Eccentricity Range
84
Mow00,0830,1580,2230,2800,3270,3660,3950,4150,429e1 0,2090,2320,2530,2710,2870,3000,3110,3190,3240,328
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Mslab00,0360,0670,0950,1190,1400,1560,1680,1770,183e20,1130,1370,1570,1750,1910,2040,2150,2230,2290,233
86
Msdl00,0000,0000,0000,0000,0000,0000,0000,0000,000e3-0,229-0,176-0,129-0,087-0,052-0,0220,0030,0210,0340,043
87
Mll00,0950,1800,2540,3180,3720,4160,4490,4720,488e4-0,168-0,104-0,0470,0030,0460,0830,1120,1350,1500,161
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89
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Cable Profile
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Sec.12345678910
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Dist.0,001,002,003,004,005,006,007,008,009,75
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#Strands10121416182020202020
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Force1,8002,1602,5202,8803,2403,6003,6003,6003,6003,600
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emin -0,168-0,104-0,0470,0030,0460,0830,1120,1350,1500,161
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input e 0,2330,2300,2250,2200,2100,2030,2030,2030,2030,203
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emax 0,1130,1370,1570,1750,1910,2040,2150,2230,2290,233
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Check of Stresses at Transfer
100
f1 -2,52-1,42-0,340,631,802,753,433,964,324,57