Quantcast
Channel: RAM | STAAD Forum - Recent Threads
Viewing all articles
Browse latest Browse all 16762

Hi Everyone, I am modeling a Vierendeel truss pedestrian bridge. I am getting too high lateral deflections. It would be great if I get some suggestions to fix it. Please find staad input. Thanks

$
0
0

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 08-Dec-15
END JOB INFORMATION
INPUT WIDTH 79
*
UNIT FEET KIP
*
JOINT COORDINATES
*TRUSS 1 BOTTOM CHORD
101 0.0 0.0 0.0 122 126.0 0.0 0.0 1
* TRUSS 1 TOP CHORD
123 0.0 18.0 0.0 144 126.0 18.0 0.0 1
* TRUSS 2 BOTTOM CHORD
201 0.0 0.0 14.17 222 126.0 0.0 14.17 1
* TRUSS 2 TOP CHORD
223 0.0 18.0 14.17 244 126.0 18.0 14.17 1
*
MEMBER INCIDENCES
* TRUSS BOTTOM CHORDS
101 101 102 121 1 1
122 201 202 142 1 1
* TRUSS TOP CHORDS
201 123 124 221 1 1
222 223 224 242 1 1
* TRUSS VERTICALS
301 101 123 308 1 3
309 201 223 316 1 3
* BOTTOM CHORD FLOORBEAMS
501 101 201 522 1 1
* TOP CHORD FLOORBEAMS
601 123 223 622 1 1
*
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.49
ALPHA 6.5e-006
DAMP 0.03
END DEFINE MATERIAL
*
*
MEMBER PROPERTY AMERICAN
* BOTTOM CHORDS
101 TO 142 TABLE ST W12X22
* TOP CHORDS
201 TO 242 TABLE ST W36X302
* TRUSS VERTICALS
301 TO 316 TABLE ST W18X50
* BOTTOM CHORD FLOORBEAMS
501 TO 522 TABLE ST W12X16
* TOP CHORD FLOORBEAMS
601 TO 622 TABLE ST W10X15
*
* VERTICALS
MEMBER TRUSS
301 TO 316
*
MEMBER RELEASE
* FLOORBEAMS AND ROOF BEAMS
501 TO 522 601 TO 622 BOTH MZ
*
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS

101 201 FIXED BUT FX MX MY MZ KFZ 672

122 222 FIXED BUT MX MY MZ KFX 1200 KFZ 672

123 144 223 244 FIXED BUT MX MY MZ

*
LOAD 1 LOADTYPE Dead TITLE DEAD
SELFWEIGHT Y -1.1
MEMBER LOAD
101 TO 142 UNI GY -0.736
201 TO 242 UNI GY -0.06
502 TO 521 UNI GY -0.3
501 522 UNI GY -0.15
602 TO 621 UNI GY -0.15
601 622 UNI GY -0.075
*
LOAD 2 LOADTYPE Live TITLE LIVE
MEMBER LOAD
502 TO 521 UNI GY -0.6
501 522 UNI GY -0.3
*
LOAD 3 LOADTYPE Snow TITLE SNOW
MEMBER LOAD
602 TO 621 UNI GY -0.252
601 622 UNI GY -0.126
*
LOAD 4 LOADTYPE Wind TITLE WIND UPLIFT
MEMBER LOAD
201 TO 221 UNI GY 0.071
222 TO 242 UNI GY -0.213
*
LOAD 5 LOADTYPE Wind TITLE WIND LOAD ON SUPERSTRUCTURE
MEMBER LOAD
201 TO 221 UNI GZ 0.0167
*
LOAD 6 LOADTYPE Wind TITLE WIND LOAD ON SUPERSTRUCTURE (TRUSS SYSTEM)
MEMBER LOAD
201 TO 221 UNI GZ 0.258
101 TO 121 UNI GZ 0.119
** LOAD COMBINATIONS
LOAD COMB 101 SERVICE I - DC + LL +0.3W
1 1.0 2 1.0 4 1.0 5 1.0 61
*
LOAD COMB 102 STRENGTH I - 1.25DC + 1.75LL
1 1.25 2 1.75
*
LOAD COMB 103 STRENGTH III - .25DC + 1.4W
1 1.25 4 1.4 5 1.4 6 1.4
LOAD COMB 104 EXTREME EVENT - 1.25DC + 0.5LL + SNOW
1 1.25 2 0.5 3 1.0
*
PERFORM ANALYSIS
*
* LRFD CODE CHECK FOR CHORD MEMBERS
UNIT INCHES KIP
PARAMETER 1
CODE LRFD
FYLD 50 ALL
BEAM 1 ALL
CAN 0 ALL
LY 18 MEMB 101 TO 142 201 TO 242
LZ 6 MEMB 101 TO 142 201 TO 242
CHECK CODE MEMB 101 TO 142 201 TO 242
*
* LRFD CODE CHECK FOR TRUSS VERTICALS
PARAMETER 2
CODE LRFD
FYLD 50 ALL
BEAM 1 ALL
CHECK CODE MEMB 301 TO 316
*
* LRFD CODE CHECK FOR FLOORBEAMS
PARAMETER 3
CODE LRFD
FYLD 50 ALL
BEAM 1 ALL
CHECK CODE MEMB 501 TO 522
*
* LRFD CODE CHECK FOR TOP CHORD BEAMS
PARAMETER 4
CODE LRFD
FYLD 50 ALL
BEAM 1 ALL
CHECK CODE MEMB 601 TO 622
*
FINISH


Viewing all articles
Browse latest Browse all 16762

Trending Articles



<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>