12

1. ( ) 46 1

4

46 1( 56 1100 )

( 1/8

12 1351

) 2

FL+1.35m 3

2.

( )

46 1

4

(

12 1352 )

Fe 0.3

3.

47 1 ( 12

1460 )

N

4. 38

38 4

5. 39 1

2

6.

42 1

2

1

50

34

- .

46 4

46 1

36

1/8 12 1351

2 :1 :

12 1351 A0 A2 2 A0 A2 8

A0

A2

A1 1

2

51

56 1100 1

1800mm 2300mm 27mm ×130mm 15%

3mm 3mm

15mm ( )9 620 3

0.6

46 1(9) 56 1100 1

5.0

46 1(8) 56 1100 1

5.0

66

- .

X 0.3Y 0.3

1 7

2

2

Y X XY 2

0.3

6

1

68

X0 = 4.5 2 2.25m y0 = 7.2 2 3.6m

3

x0

y0

69

.

) yg( × )

(4+4) × 7.2 = 57.6 4 × 5.4 = 21.6

(4+4+4) × 2.7 = 32.4 118.8 4 × 1.8 = 7.2

(4+4) × 0 = 0 = 3.3m

X 4+4+4+4+4+4+4+4+4 = 36

xg xg = 2.3m

4

x0

y0

71

.

Kt X Y 2 JxY X 2 Jy

Jx X Dx × Y Y yg 2

Jy Y Dy × X X yx 2

) Jx ( xg , yg ) = ( 2.3m , 3.3m )

(4+4) (7.2 - 3.3)2 = 121 4 (5.4 - 3.3)2 = 17 (4+4+4) (2.7 - 3.3)2 = 4 238 4 (1.8 - 3.3)2 = 9 (4+4) (0.0 - 3.3)2 = 87

Jy Jy 81Kt Jx+Jy 238+81 319

6

y0

x0

Jx X Dx × Y Y yg 2D yJy Y Dy × X X yx 2D y

( xg , yg ) = ( 2.3m , 3.3m )

(4+4) (7.2 - 3.3))2 = 121 4 (5.4 - 3.3))2 = 17 (4+4+4) (2.7 - 3.3))2 = 4 2384 (1.8 - 3.3))2 = 9 (4+4) (0.0 - 3.3))2 = 87

81238+81

72

.

.

Rex 0.3 Rey 0.3

ex, ey

0.10

0.01

Kt

DY Y

DX X DX X

DY Y

Kt

77

12 1460 3

N × 5.3 (kN) (1) 14

N kN

0 0

0.65 3.4 CP-L

1.0 5.1

VP CP-T

1.4 7.5

SB S

( )

1.6 8.5

SB S

( )

1.8 10.0 HD-B10,HD-N10,S-HD10

2.8 15.0 HD-B15,HD-N15,S-HD15

3.7 20.0 HD-B20,HD-N20,S-HD20

4.7 25.0 HD-B25,HD-N25,S-HD25

5.6 30.0 HD-B15,HD-N15,S-HD15 ×2

85

23 4

X1 X2

Y3

Y2

Y1

X1 X2 X3 1

Y3

Y2

Y1

X1 2

X2

Y3

Y2

Y1

86

(1) (2) ( )(1) [ 12 1460 1 ( )]

( )::

(2) ( )[1]

A1( )

A2( )

B1 0.5 0.8)

B2 0.5 ( 0.8)

L

<1>

N A1 × B1 L

0.5 0.6

0.8 0.4

<2>

N Al × B1 + A2 × B2 L

0.5

0.8

0.5 1.6

0.8 1.0

120

- .

43 4

9-1.a.43 1 1/3

- .

43 5

(5)

Y3

Y2

Y1 X1 X2 X3 X4

Y2

Y1 X2 X3 X4

2