96 | P a g e

97 | P a g e

28

20

6

7

) II(

110

70

AISC-ASD89

98 | P a g e

)

6 -4-3-1

= ×

=

=

=

6-4-1

= 100

6 -4-3-2

= =2

10= 11.30°

:

15° = 1

= 1 × 100 = 100

99 | P a g e

6-7-2-5-1

=

6-7-2-5-3

6-7-2 = 0.25

6 -7-2-5-7

6 -7-5 = 1

6 -7-2-5-6

= 0.08 0.08 × 6 = 0.3

II = 0.5 , = 0.1 , = 1.5

0.1 < 0.3 < 0.5 + 1 = 1.5 + 1= 2.5

6 -7-2-5-8 6-7-6

= 5

100 | P a g e

= = = 0.125

(28 × 4 × 70) × 2 = 15680 =

(20 × 4 × 70) × 2 = 11200 =

(20 × 28) × (110 + 0.2 × 100)= 72800

=

= 15680 + 11200 + 72800= 99680

=

6 -7-2-5-1

= 0.125 × 99680 = 12460

101 | P a g e

wind(

6-6-5

6 -6 -4 60

6 -6 -2

102 | P a g e

6 -6 -2 15

103 | P a g e

.

104 | P a g e

105 | P a g e

106 | P a g e

25 %

50 %

25 %

50 %

107 | P a g e

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) (

109 | P a g e

110 | P a g e

111 | P a g e

). (

112 | P a g e

113 | P a g e

114 | P a g e

) 4 ( ().

(

4

115 | P a g e

.

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). A

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