Effect of Configuration on Design of Planar Trusses

7/23/2019 Effect of Configuration on Design of Planar Trusses

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EFFECT OF TRUSSCONFIGURATION ON DESIGN

OF PLANE TRUSSES



CONTENTS

• INTRODUCTION

• objective

•

SECTION-WISE DISTRIBUTION• METHODOLOGY

– PART 11 !"o#t$%&e %'%()"i"*

–

PART 1+ !,oe( %'%()"i"*• CONCLUSION



INTRODUCTION

– A t&/"" i" % "t&/ct/&e t0%t co'"i"t"

o# t$o-#o&ce ,e,be&" o'()2 $0e&e

t0e ,e,be&" %&e o&3%'i4e "o t0%t

t0e %""e,b(%3e %" % $0o(e be0%ve"

%" % "i'3(e object5

– A t$o-#o&ce ,e,be& i" %

"t&/ct/&%( co,6o'e't $0e&e #o&ce

i" %66(ie to o'() t$o 6oi't"



A t)6e o# t&/"" i' $0ic0 0o&i4o't%(,e,be&" "/66o&te b) ve&tic%( %'i%3o'%( ,e,be&"

It i" %("o c%((e $%&&e' $it0 ve&tic%("

Di%3o'%(" c%&&) bot0 co,6&e""ive%' te'"i(e#o&ce" 7e&tic%(" "e&ve %" b&%ci'3 #o&t&i%'3/(%& $eb ")"te,

Moi8e PRATT TRUSS



So,e &e%( (i#e e9%,6(e" o# P&%ttt&/"" i' /"e

7%%(%':/&::/ &%i($%) b&i3e2



OB;ECTI7E

• P&oject i'c(/e" te"ti'3 v%&io/" 3eo,et&ict&/"" co'83/&%tio'" i' 5W%&&e'< %'5P&%tt< t&/""e" to c0ec: t0e t&e' i'e=ectio' o# t0e"e co'83/&%tio'

• To ,%:e 6&%ctic%( ,oe(" /"i'3 i>e&e't,%te&i%( to c0ec: t0e i'e?c%c) o#,%te&i%( $it0 c0%'3e i' 3eo,et&)

•

To &%$ o/t v%&io/" co'c(/"io' to#%ci(it%te t0e e"i3'e&" i' c0oo"i'3 t0e%66&o6&i%te 3eo,et&)



SECTION-WISE DISTRIBUTIO



METHODOLOGY PART 11

SOFTWARE ANALYSIS- – SPECIFICATION

•

SPAN @ ,• NO OF BAYS 7ARIABLE

• HEIGHT 7ARIABLE

• LOAD APPLIED 1 :N

•

SECTION USED ISLB-+@



•Fo& %'%()"i" 8&"t $e 89e t0e 'o o# b%)"

•No o# b%)"-+

•Hei30t-#&o, - , t0e &e"/(t" ob"e&ve

$e&e %" #o((o$"



• P&%tt 1-0,

• P&%tt +-0@,



• P&%tt -0,

• P&%tt -0,



• P&%tt @-0,

• P&%tt 11-0,2'o o# b%)"



• P&%tt 11-0,

• P&%tt 1+-0@



• P&%tt 1-0,

• P&%tt 1-0



• P&%tt 1@-0,

• P&%tt +1-0-2'o o# b%)"



• P&%tt +1-0,

• P&%tt ++-0@,

P + 0



• P&%tt +-0,

P&%tt +-0,

P tt + @ 0



• P&%tt +@-0,

• P&%tt -'o o# b%)"@20,

P tt 1 0



• P&%tt 1-0,

P + 0 @



• P&%tt +-0-@

P 0



• P&%tt -0-,

P tt 0



• P&%tt -0-,

P tt @ 0



• P&%tt @-0-,

PART1 +



PART1+ Moe( ,%:i'3 %' te"ti'3



STEP 1 - MAING SCALED DRAWIN



EP + MAING MODELS FROM SCALES DRAWI



STEP TESTING OF MODELS

TESTING OF MODELS WAS DONE ASGI7EN IS-J+ ! METHOD OF TEST FOR

NAIL-;OINTED



MODEL TESTING



HEIGHT!c

,*

No o# b%)" +

M%9i"6(%ce,e'

t!,,*

No o# b%)"

M%9i"6(%ce,e'

t!,,*

No o# b%)"

M%9i"6(%ce,e'

t!,,*

No o# b%)" @

M%9i"6(%ce,e'

t!,,*

4 8 3.6 3.2 3

5 4.5 2.2 2 1.9

6 2.5 1.68 1.4 1.3

7 2.1 1.6 1.35 1.33

8 2 1.4 1.3 1.4

MODEL TESTINGRESULT



G&%60 "0o$i'3 &e"/(t o# ,oe( te"ti'3

3 4 5 6 7 8 9 10

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

5.50

6.00

6.50

7.00

7.50

8.00

8.50

9.00

9.50

10.00

3

1.9

1.3 1.33 1.4

3.2

2

1.4 1.35 1.3

3.6

2.2

1.68 1.61.4

8

4.5

2.5

2.1 2

no. of bays=2

no. of bays=3

no. of bays=4

no. of bays=5

D E F L

E C T I O N ! , ,

*

HEIGHT!,*

C ( i



Co'c(/"io' • A" $e i'c&e%"e t0e 0ei30t 2

e=ectio' te'" to ec&e%"e

3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

11.00

12.00

13.0014.00

15.00

16.00

17.00

18.00

19.00

20.00

14.6

9.7

7.23

5.73

4.79

14.97

9.91

7.17

5.55

4.51

16.32

10.57

7.98

6.14

5.03

19.65

12.85

9.17

6.95

5.52

no. of

bays=2

no of

bays=3

no. of

bays=4

no. of

bays=5

D E F L

E C T I O N ! , ,

*

HEIGHT!,*



• I# K) i" % e=ectio' %' K9 i" %

0ei30t 2 t0e 6%tte&' ob"e&ve i")19'

$0e&e

' i" % #/'ctio' o# b%)" o&'/,be& o# 6%&titio'

• A" t0e '/,be& o# b%)" i'c&e%"e

e=ectio' ec&e%"e" 2 i'ic%ti'3t0e i'c&e%"e i' t0e (o% be%&i'3c%6%cit) o# t0e "t&/ct/&e



3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

11.00

12.00

13.00

14.00

15.00

16.00

17.00

18.00

19.00

20.00

no. of

bays=2

no of

bays=3

no. of

bays=4

no. of

bays=5

a

b

a'

b'

HEIGHT!,*

D

E F L E C T I O N

! , , *

• A" t0e '/,be& o# b%)"



• A" t0e '/,be& o# b%)"i'c&e%"e $it0 i'c&e%"e i'

0ei30t 2 t0e &%te o# ec&e%"eo# e=ectio' ec&e%"e" So#o& e9%,6(e- #o& 'o o# b%)"

+ %' 0ei30t v%&)i'3 #&o, ,to , %' 'o o# b%)" %'

0ei30t v%&)i'3 #&o, , to, 2 t0e ec&e%"e i'e=ectio' ec&e%"e" %" $e

,ove #&o, , to , %" it i"



A'o,%(ie" ob"e&ve

•Mo&e i'c&e%"e i' 'o o# b%)"6&ove" o/t to be &e/'%'t%" &%te o# ec&e%"e o#e=ectio' ec&e%"e" %" $ei'c&e%"e t0e 'o o# b%)" %'

beco,e co'"t%'t o' % 89'o o# b%)" %' &e,%i'"co'"t%'t t0e&e%#te&



3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

11.00

12.00

13.00

14.00

15.00

16.00

17.00

18.00

19.00

20.00

no. of

bays=2

no of

bays=3

no. of

bays=4

no. of

bays=5

a

b

a'

b'

HEIGHT!,*

D

E F L E C T I O N

! , , *



• Wit0 i'c&e%"e o# 'o o# b%)"$it0 v%&i%tio' i' 0ei30t it $%"ob"e&ve t0%t t0e e=ectio'"t%&t" i'c&e%"i'3 %#te& %6%&tic/(%& e9te't 2 t0i" i" /e

to "0o&ti'3 o# 0o&i4o't%(,e,be& %' i'c&e%"e i've&tic%( ,e,be&

So,e ot0e& i,6o&t%'t



So,e ot0e& i,6o&t%'tob"e&v%tio'

• To 3et ,%9i,/, eco'o,) o#% t&/"" "t&/ct/&e % e"i3'e&,/"t "e%&c0 #o& %co'83/&%tio' $0ic0 3ive",i'i,/, e=ectio' %t (e%"t

%,o/'t o# ,%te&i%( /"e2 t0i"#/&t0e& e6e'" o' co"t o#t0e ,%te&i%( /"e



• T0e &e"/(t" ob"e&ve #&o,

6&%ctic%( "t/ie" $e&e #o/' tobe "0o$i'3 "%,e c0%&%cte&i"tic"%" t0%t $it0 "o#t$%&e %'%()"i" 2

i'ic%ti'3 t0%t t)6e o# ,%te&i%(o'() i'=/e'ce" t0e ,%3'it/e o#e=ectio' %' 'ot t0e c0%'3e i'

e=ectio' c/&ve 2 "o t0e ,o"teco'o,ic%( co'83/&%tio' $o/(be "%,e #o& %(( ,%te&i%(



3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

11.00

12.00

13.00

14.00

15.00

16.00

17.00

18.00

19.00

20.00

no. of bays=2

no of bays=3

no. of bays=4

no. of bays=5

3 4 5 6 7 8 9 10

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

5.506.00

6.50

7.00

7.50

8.00

8.50

9.00

9.50

10.00

no. of bays=2

no. of bays=3

no. of bays=4

no. of bays=5

SOFTWARE ANALYSISRESULT

MODEL ANALYSIS RESU



THAN YOU

Effect of Configuration on Design of Planar Trusses

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