Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/~phil/hardware/telescope/Platform_Truss_Table_27apr10.pdf Дата изменения: Wed Apr 28 02:02:34 2010 Дата индексирования: Sat Jun 26 00:45:46 2010 Кодировка: Поисковые слова: промежуточный векторный бозон

ARECIBO RADIO OBSERVATORY FEED PLATFORM MEMBER CAPACITY AND LOAD TABLE

MAIN TRUSS 1992 Reinforcement

Member

Original Member

Area
[in2]

Area
[in2]

Italic Members Fy = 36 ksi (-) Compression (+) Tension 1963 Force 1992 1992 Table Operational Survival
[kip] [kip] [kip]

Bottom Chord Flanges:

Fy = Fu =

46 67

ksi ksi

U = 0.85 Tension Limited Members

Other:

Fy = Fu =

50 70

ksi ksi

k= 4.71(E/Fy)

1.00 113.43

2010 STAAD Forces (20000) Length Gross Area
[kip] [ft] [in2]

Compression Limited Members I
[in4]

0.6FyAg
[kip]

Anet
[in2]

0.5FuAe 1963 Ratio 1992 Ratio 1992 Ratio 2010 Ratio
[kip] Operational Operational Survival (20000 ft-k)

r
[in]

kL/r

Fcr
[ksi]

Pn/
[kip]

1963 Ratio 1992 Ratio 1992 Ratio 2010 Ratio
Operational Operational Survival (20000 ft-k)

Top Chords Uo'-Uo Uo-U1 4-L3.5x3.5x5/16 U1-U2 2-C18x42.7 U2-U3 2-C18x51.9 U3-U4 2-C18x58 U4-U5 2-C18x58 Bottom Chords Lo-L1 2-18x1 1/16 + 21 7/8x1/2 L1-L2 2-18x1 1/16 + 21 7/8x1/2 L2-L23 2-18x1 1/4 + 21 1/2x1/2 L23-L3 2-18x1 1/4 + 21 1/2x1/2 L3-L4 2-18x1 7/16 + 21 1/8x1/2 L4-L5 2-18x1 1/2 + 21x9/16 Verticals Uo-Lo 4-L5x5x3/8 U1-L1 2-L5x3x5/16 U2-L2 2-C12x25 U2L3-L23 U3-L3 2-C12x25 U4-L4 2-C12x25 U5-L5 2-L6x3.5x5/16 Diagonals U1-Lo 2-C15x33.9 U1-L2 2-C8x18.75 U2-U2L3 2-C8x18.75 U2L3-L2 U2L3-L3 2-C8x18.75 U3-L4 2-C10x20 U4-L5 2-C12x25

4-L5x3x3/8 8.36 25.2 30.6 34.2 34.2 49.1875 49.1875 55.75 55.75 62.3125 65.8125 14.44 4-L5x5x1/2 4.8 14.68 2-C8x13.75 14.68 4-L3.5x2.5x5/16 14.68 5.74 20 11.02 11.02 2-C8x11.5 11.02 2-C8x18.75 11.74 14.68

11.44 20 -376 -557 -663 -654 1362 1362 1553 1553 1736 1825 19 -44 0 -238 -221 -103 -8 -319 305 291 6.74 11.02 291 196 106/-100

4-L3.5x3x3/8 4-L3.5x3x3/8

9.2 9.2

-185 -104 -395 -592 -778 -770 1301 1301 1430 1430 1689 1510 -302 0 -252 -104 85/-307 -108 0 -232 285 316 410 312/-23 115/-102

-62 -30 -401 -611 -735 -722 1274 1274 1469 1469 1645 1548 -96 0 -267 -105 -282 151/-173 0 -323 302 332 381 297/-36 138/-125

-34.5 -443.5 -688.1 -859.6 -831.1 1398.4 1400.6 1548.6 972.9 1191.6 1339.5 -95.2 6.4 -313.7 -117.2 -354.3 103.1/-136 -11.7 -362.1 336.4 391.4 71.7 460.1 300.3 153.2/-123.8

33 72 72 72 72 72 24 24 24 24 24 24 30 30 30 12 30 30 30 38.4 38.4 17.2 17.2 17.2 38.4 38.4

11.44 8.36 25.2 30.6 43.4 43.4 49.1875 49.1875 55.75 55.75 62.3125 65.8125 19 4.8 14.68 8.08 21.8 14.68 5.74 20 11.02 11.02 6.74 22.04 11.74 14.68 1357.58 1357.58 1538.70 1538.70 1719.83 1816.43 52.19 44.49 1486.04 1490.42 100.33% 100.33% 100.93% 100.93% 100.94% 100.47% 95.83% 95.83% 92.94% 92.94% 98.21% 83.13% 93.84% 93.84% 95.47% 95.47% 95.65% 85.22% 103.01% 103.17% 100.64% 63.23% 69.29% 73.74%

1606 1011 3146.5 3831.6 5793 5793

10.55 11 11.17 11.19 11.55 11.55

37.54 78.55 77.35 77.21 74.81 74.81

45.11 31.85 32.28 32.33 33.21 33.21

308.99 159.42 487.15 592.47 863.08 863.08

77.18% 94.01% 76.82% 75.78%

59.87% 65.23% 81.08% 99.92% 90.14% 89.22%

20.07% 18.82% 82.31% 103.13% 85.16% 83.65%

21.64% 91.04% 116.14% 99.60% 96.29%

56.94

1907.41

2204 103.68 0.00% 6.17% 288 72.2 438.7 288

10.77 4.43 2.99 4.48 4.43

33.43 81.26 48.16 80.36 81.26

46.08 30.85 42.20 31.18 30.85

524.24 271.19 204.18 407.06 271.19

8.39% 87.76% 54.29% 37.98%

57.61% 92.92% 50.94% 75.42% 39.82%

18.31% 98.45% 51.43% 69.28% 63.79%

18.16% 115.67% 57.40% 87.04% 50.15%

8.08 7.12

654.00 440.40

13.00% 34.29% 23.41%

630 330.60 330.60 202.20 661.20 352.20 440.40 15.04 8.95 17.90 10.13 447.56 313.25 532.53 301.34 92.26% 88.02% 44.01% 55.65% 24.07% 86.21% 95.58% 62.01% 88.59% 26.11% 91.35% 100.42% 57.62% 84.33% 31.34% 101.75% 124.95% 35.46% 86.40% 99.66% 34.79%

5.62

81.99

30.58

366.27

87.09%

63.34%

88.19%

98.86%

182.4

3.52

130.91

14.65

128.76

77.67%

79.22%

97.08%

96.15%

BRACING TRUSS 1992 Reinforcement 1963 Force Table
[kip]

Member

Original Member

Area
[in2]

Area
[in2]

1992 Operational
[kip]

1992 Survival
[kip]

2010 STAAD Forces (20000) Length Gross Area
[kip] [ft] [in2]

Tension Limited Members 0.6FyAg
[kip]

Compression Limited Members I
[in4]

Anet
[in2]

0.5FuAe 1963 Ratio 1992 Ratio 1992 Ratio 2010 Ratio
[kip] Operational Operational Survival (20000 ft-k)

r
[in]

kL/r

Fcr
[ksi]

Pn/
[kip]

1963 Ratio 1992 Ratio 1992 Ratio 2010 Ratio
Operational Operational Survival (20000 ft-k)

Top Chords U20-U21 2-C10x15.3 U21-U22 2-C10x15.3 Bottom Chords L20-L21 2-16x1/2 + 23x7/16 L21-L22 2-16x1/2 + 23x7/16 Verticals U21-L21 2-C10x15.3 U22-L22 2-L6x3.5x5/16 Diagonals U20-L21 2-C9x13.4 U21-L22 2-C10x15.3

8.96 8.96 26.0625 26.0625 8.96 5.74 7.88 8.96 2-C9x20 11.74

-135 -121 12 119 40/-50 -2 222 55/-49

-151 -154 41/-59 7/-59 36/-23 0 304 41/-29

-172 -165 98/-49 105/-45 53/-66 0 271 74/-64

-153.2 -143.2 15.1/-62.3 196.5 48.5/-53 -1.7 314.9 62/-54.2

72 72 19.29 16.71 30 30 35.67 34.34

8.96 8.96 26.0625 26.0625 8.96 5.74 11.74 8.96 719.33 719.33 268.80 1.67% 16.54% 14.88% 5.70% 0.97% 13.39% 13.62% 14.60% 19.72% 2.10% 27.32% 18.04%

1327 1327 2653 2654 1327

12.17 12.17 10.09 10.09 12.17

71.00 71.00 22.94 19.87 29.58

34.59 34.59 48.11 48.58 46.90

185.57 185.57 750.85 758.11 251.64

72.75% 65.20%

81.37% 82.99% 7.86% 7.78%

92.69% 88.92% 6.53% 5.94% 26.23%

82.56% 77.17% 8.30%

19.87%

9.14%

21.06%

352.20 268.80

11.44

340.38

63.03% 20.46%

86.31% 20.46%

76.94% 27.53%

92.51% 23.07%

1327

3.52

117.06

18.32

98.28

49.86%

29.51%

65.12%

55.15%

90%-100% Stressed

Over 100% Stressed

K:\PROJ\A&W\4176\CALCS\2010 Analysis Models (VMA)\Results\Platform Truss Table

2010/04/15 VMA