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CWR in Continuos Steel Bridge with Ballastless Track

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CWR in Continuos Steel Bridge with Ballastless Track

* ** ***

Min, Kyung-Joo Ban, Geol-Yeong Kim, Yung-Gook

--- ABSTRACT

The additional rail axial force due to temperature change in the ballastless long span bridge with CWR may be higher than common simply supported plate girder bridges. This higher axial force will increase track maintenance costs.

In this study, CWR policies of existing long span railway bridges, especially truss bridges, are studied for various supporting condition of bridge such as combination of roller, hinge and semi-fixed supporting conditions.

In several numerical tests show that the use of semi-fixed shoes is effective in decreasing rail axial forces and seismic response of bridges. It is expected that the continuous welded track in ballastless long span bridge will increase riding quality of train and decrease maintenance costs and vibrations and noises.

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3.1 A

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3.1.1

0 50 100 150

0 200 400 600 800 1000 1200

축 력 (t o n f)

0 50 100 150

0 200 400 600 800 1000 1200

축 력 (t o n f)

(a) (a)

-30 -20 -10 0 10 20 30

0 200 400 600 800 1000 1200

변 위 (m m )

-30 -20 -10 0 10 20 30

0 200 400 600 800 1000 1200

변 위 (m m )

(b) - (b) -

-150 -100 -50 0 50 100 150

1 6 11 16 21 26 31

종 방 향 력 (t o n f)

-150 -100 -50 0 50 100 150

1 6 11 16 21 26 31

종 방 향 력 (t o n f)

(c) (c)

1. A ( / ) 2. A ( 4 )

(4)

3.1.2 FFMM

0 50 100 150 200

0 200 400 600 800 1000 1200

축 력 (t o n f)

0 50 100 150 200

0 200 400 600 800 1000 1200

축 력 (t o n f)

(a) (a)

-30 -20 -10 0 10 20 30

0 200 400 600 800 1000 1200

변 위 (m m )

-30 -20 -10 0 10 20 30

0 200 400 600 800 1000 1200

변 위 (m m )

(b) - (b) -

-100 -50 0 50 100

1 6 11 16 21 26 31

종 방 향 력 (t o n f)

-100 -50 0 50 100

1 6 11 16 21 26 31

종 방 향 력 (t o n f)

(c) (c)

3. A (FFMM / ) 4. A (FFMM/ 8 )

3.1.3

0 50 100 150

0 200 400 600 800 1000 1200

축 력 (t o n f)

0 50 100 150

0 200 400 600 800 1000 1200

축 력 (t o n f)

(a) (a)

-30 -20 -10 0 10 20 30

0 200 400 600 800 1000 1200

변 위 (m m )

-30 -20 -10 0 10 20 30

0 200 400 600 800 1000 1200

변 위 (m m )

(b) - (b) -

-100 -50 0 50 100

1 6 11 16 21 26 31

종 방 향 력 (t o n f)

-100 -50 0 50 100

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31

종 방 향 력 (t o n f)

(c) (c)

5. A ( / ) 6. A ( / 2 )

(5)

1 C 18.3m 3 4

24.5m 3 3 61m 11 .

3.2.1

0 50 100 150 200 250

0 200 400 600 800 1000 1200

축 력 (t o n f)

0 50 100 150 200 250

0 200 400 600 800 1000 1200

축 력 (t o n f)

(a) (a)

-80 -40 0 40 80

0 200 400 600 800 1000 1200

변 위 (m m )

-80 -40 0 40 80

0 200 400 600 800 1000 1200

변 위 (m m )

(b) - (b) -

-200 -100 0 100 200

1 2 3 4 5 6 7 8 9 10 11

종 방 향 력 (t o n )

-200 -100 0 100 200

1 2 3 4 5 6 7 8 9 10 11

종 방 향 력 (t o n f)

(c) (c)

7. C ( / ) 8. C ( 7 )

3.2.2 FFMM

0 100 200 300

0 200 400 600 800 1000 1200

축 력 (t o n f)

0 100 200 300

0 200 400 600 800 1000 1200

축 력 (t o n f)

(a) (a)

-80 -40 0 40 80

0 200 400 600 800 1000 1200

변 위 (m m )

-80 -40 0 40 80

0 200 400 600 800 1000 1200

변 위 (m m )

(b) - (b) -

-300 -200 -100 0 100 200 300

1 2 3 4 5 6 7 8 9 10 11

종 방 향 력 (t o n )

-300 -200 -100 0 100 200 300

1 2 3 4 5 6 7 8 9 10 11

종 방 향 력 (t o n f)

(c) . (c)

9. C (FFMM / ) 10. C (FFMM/ 6 )

(6)

3.2.3

0 50 100 150 200

0 200 400 600 800 1000 1200

축력(tonf)

0 50 100 150 200

0 200 400 600 800 1000 1200

축력(tonf)

(a) (a)

-80 -40 0 40 80

0 200 400 600 800 1000 1200

변위(mm)

-80 -40 0 40 80

0 200 400 600 800 1000 1200

변위(mm)

(b) - (b) -

-300 -200 -100 0 100 200 300

1 4 7 10 13 16 19 22 25 28 31 34 37 40

종방향력(ton)

-300 -200 -100 0 100 200 300

1 4 7 10 13 16 19 22 25 28 31 34 37 40

종방향력(ton)

(c) (c)

11. C ( / ) 12. C ( / 3 )

3.3 1

1

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13 ~ 14 .

신 축 이 음 매 가 없 는 경 우

0 2 5 5 0 7 5 1 0 0 1 2 5 1 5 0

0 1 0 0 2 0 0 3 0 0 4 0 0

축력(tonf)

기 존 반 고 정 형

신 축 이 음 매 가 1 개 소 인 경 우

0 2 5 5 0 7 5 1 0 0 1 2 5 1 5 0

0 1 0 0 2 0 0 3 0 0 4 0 0

축력(tonf)

기 존 반 고 정 형

13. 1

신 축 이 음 매 가 없 는 경 우

0 2 5 5 0 7 5 1 0 0 1 2 5 1 5 0

0 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0

축력(tonf)

기 존 반 고 정 형

신 축 이 음 매 가 1 개 소 인 경 우

0 2 5 5 0 7 5 1 0 0 1 2 5 1 5 0

0 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0

축력(tonf)

기 존 반 고 정 형

14. ( )

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15. C 3

-300 -200 -100 0 100 200 300

0 10 20 30 40 50

시간(s e c )

전 단 력 (t o n f)

-100

-50 0 50 100

0 10 20 30 40 50

시 간 (s e c )

전 단 력 (t o n f)

(a) P25 (a) P25

-25.0 -12.5 0.0 12.5 25.0

0 10 20 30 40 50

시간(s e c )

변 위 (m m )

-25.0 -12.5 0.0 12.5 25.0

0 10 20 30 40 50

시간(sec)

변 위 (m m )

(b) P26 (b) P25

16. MFMM 17.

2

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.

1 6500tonf

4

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2. (MFMM)

TRUSS (L=189.7m)

(tf m) (tf) (tf) ( ) (g) ( ) (tf)

P25 P26

Max 24,339 1,982 196 2.14 0.982 19.1 28

Min -28,286 -1,686 -218 -2.41 -1.068 -19.7 -29

MFMM

P25 Max 18,287 1,332 488 2.04 0.373 0.0 234

Min -18,075 -1,200 -532 -1.74 -0.268 0.0 -242

P26 Max 24,696 2,037 214 2.17 1.012 5.1 0.0

Min -29,234 -1,712 -217 -2.51 -1.094 -5.6 0.0

(8)

3 .5

3 .

3 A

1

119ton

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188m C

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A C 4 7

130ton , 100ton

. FFMM

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.

4.

3. ton, m

A

119 12.4 15 2 93 8.2 44

140 16.3 33 4 135 16.8 135

FFMM 176 24.3 152 8 102 10.1 62

C

191 38.2 125 3 99 9.4 66

185 35.3 156 7 132 16.1 132

FFMM 253 69.2 225 6 20 11.6 56

114 11.3 17

1 82 5.4 39

130 14.7 75 129 14.8 112

108 9.1 11

1 98 7.9 36

123 11.6 46 123 11.6 100

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