5&4 ¦ @ ã ~ m 3&9µ) b i ö 6õ m %Ê'23&4 \5&4 @ ã ~ m 3&9µ) b "i...

4
3&㒊ᮦ5&㒊ᮦΰᅾ3&㦵⤌ඖຊ≉ᛶ㛵◊✲ ᪥ᮏᏛ Ꮫ㝔 Ꮫ⏕ဨ ۑᘓẎ ᪥ᮏᏛ Ꮫ㝔 ṇဨ ᕤᏛ༤ኈ ཎṇ⾜ ᪥ᮏᏛ Ꮫ㝔 ṇဨ ༤ኈᕤᏛ AbstractThe analyses were performed on prestressed concrete frames subjected to reversed loading. The variables include the ratio of the amount of prestressed concrete steel to that of total longitudinal reinforcement and the ratio of the number of yield hinges at the column to that of total hinges in the mechanism. On the basis of the results the effects of the variables on the hysteretic behavior of prestressed concrete frames were clarified. Key wordsReversed loading , Prestressed concrete frames , Yield hinge , Hysteretic behavior PC 㒊ᮦ⥭ࡣᙇຊᬑ㏻㕲➽㔞ᒚṔᛶ≧ࡢࡑඖຊ≉ᛶRC 㒊ᮦẚ㍑ ከᵝPC 㦵⤌RC ࠸⏝ࡀPC タィ᮲௳㛗ᮇⲴ㔜ᨭ㓄 RC ࡌ⏕ࡀࢪ㸪ከᵝࡀࢪΰᅾࡗࡀࡓࡋࠋࡢࡑṔᛶ≧㒊ᮦඖຊ≉ᛶࡅࡔࡃ࡞㝆అᶵᵓᨭ㓄ෆ⏣㸪ᱱ PC㸪ᰕ RC ࡓࡋ3 ᒙᆺ㦵⤌ᑐṇ㈇⧞㏉ゎᯒ⾜PC 㦵⤌ඖຊ≉ᛶ1) ᮏ◊✲ࡇࡣ6 ᆺ㦵⤌ᑐゎᯒ⾜㸪ᒚṔᛶ≧ཬ㒊ᮦຊ≉ᛶ㝆అᶵᵓᙳ㡪ウඹ㸪ᶵᵓࡅ࠾ᰕ㢌ᰕ⬮㝆అࡀࢪᙧᡂ ➼ࡀ࠸౯⢓ᛶῶ⾶ᐃ㦵⤌ኚᙧᙳ㡪 㒊ᮦࢣࢫࡢࢺࡣ㸪ᒚṔ⣳㗽ᆺϨ㸪6 Ꮠᆺ ϩᵓᡂලయⓗࡢࡇϨϩ࣓Į ḟ⤖ RC 㒊ᮦ PC 㒊ᮦከᵝᒚṔᛶ≧⌧ࡗ࡞ 1) ࡢࡇࠋヲ⣽௨ୗ♧ ࢣࢫ ࡧࡦC㝆అⅬY≉␗Ⅼᮇ๛ᛶ Ke ᙎᛶ๛ᛶࡧࡦMcr ⤊ࡆᒁ࣓Mu 3& つ‽ ␎ࡢ⟬ᘧ 3) ⟬ฟ㝆అ࣓My Mu 90%B ry py r ry p py u b T T N D N d T d T M V 2 ) ( 2 2 ăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăăă(1) ࡇࡇ7 S\ 3& 㗰ᮦ㝆అⲴ㔜 7 U\ 㕲➽㝆అⲴ㔜 dp = PC 㗰ᮦ᭷ຠ ࠸ࡏdr = 㕲➽᭷ຠ ࠸ࡏıB = ࡢࢺᅽ⦰ᙉᗘ b = 㒊ᮦᖜ D = 㒊ᮦ ࠸ࡏ㝆అ㒊ᮦゅ Ry e y y y K M R D / ······································· (2) ࡇࡇ㸪㝆అ๛ᛶపୗ⋡ Įy 4) Y C F E ϩ D Kp R Kpp R M2 M Ke R M1 K Y K pp K C Y C 〔論文〕 勝抄潤署抄潤署循晶竣彰揮署積晋湘 瑞тх条淳晶唱準塾妾匝船僧季трсц消ср蕉稀

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Page 1: 5&4 ¦ @ ã ~ M 3&9µ) b I ö 6õ M %Ê'23&4 \5&4 @ ã ~ M 3&9µ) b "I ö _6õ M %Ê'2 ¥ ± Û ± Û7T Û#Õ ( Ñ ' ¥ ± Û ± Û7T G ( d Û $ ~ N G/ ¥ ± Û ± Û7T G ( $ d Û

Abstract The analyses were performed on prestressed concrete frames subjected to reversed loading. The

variables include the ratio of the amount of prestressed concrete steel to that of total longitudinal

reinforcement and the ratio of the number of yield hinges at the column to that of total hinges in the

mechanism. On the basis of the results the effects of the variables on the hysteretic behavior of prestressed

concrete frames were clarified.

Key words Reversed loading , Prestressed concrete frames , Yield hinge , Hysteretic behavior

PC RC

PC RC PCRC

PC RC3 PC

1) 6

RC PC 1)

C YKe Mcr Mu

3) My Mu 90%

B

rypyrryppyu b

TTNDNdTdTM2

)(2

2

(1)

dp = PC dr =

B = b = D =

Ry

eyyy KMR / ······································· (2)

y 4)

Y

C

Kp R Kpp R

M2 M

Ke R

M1

K

Y

KppppKK

C

Y

C

〔論文〕

Page 2: 5&4 ¦ @ ã ~ M 3&9µ) b I ö 6õ M %Ê'23&4 \5&4 @ ã ~ M 3&9µ) b "I ö _6õ M %Ê'2 ¥ ± Û ± Û7T Û#Õ ( Ñ ' ¥ ± Û ± Û7T G ( d Û $ ~ N G/ ¥ ± Û ± Û7T G ( $ d Û

2

33.01043.05.364.1Dd

Da

Dd

pnpn ro

ggsty ·············································· (3)

a = pg = PC pt = 0 = = N/( B) n ns = PC dg = PC

PC

21 )1( MMM (4)

gr

gogr

q

q2

(5)

M1 M2 = , qr = = at ry/( B)

g = Pe/( B) = Rmax/Ry < 1 = 1

Kp Ke K r4)

KrKrK ep 1 (6)

yrar (7)

K = = Rmax/Ry μ > 1 μ = 1 Ry = y = ar = a/(4D) ar > 1 ar = 1

S5)

yy

epp

KK (8)

RC PC4m 18m 6

Ai

12kN/m2

50 100 200 400600 800 1200 mm

2Db

2

ii

iib m

mD ············································· (9)

a)b) c)

132

= (10)

( ) 0, 1/6, 1/5, 1/4, 1/3, 1/2, 1 ( p) 0, 0.2, 0.4, 0.6, 0.8, 1

b (mm)

D (mm)

dr (mm)

dp (mm)

750 1200 1140 840 1000 1000 940 ---

( 4m 18m 6m×

12kN/m2

PC

B

(N/mm2)

Ec

(N/mm2)

ry

(N/mm2)

ES

(N/mm2)

py

(N/mm2)

Ep

(N/mm2)

36 26000 380 205000 1600 205000

=4m

=18m

〔論文〕

Page 3: 5&4 ¦ @ ã ~ M 3&9µ) b I ö 6õ M %Ê'23&4 \5&4 @ ã ~ M 3&9µ) b "I ö _6õ M %Ê'2 ¥ ± Û ± Û7T Û#Õ ( Ñ ' ¥ ± Û ± Û7T G ( d Û $ ~ N G/ ¥ ± Û ± Û7T G ( $ d Û

PCPC

p = (11)

2eqh ········································································ (12)

p

1) p 0RC RC

RC 2) p 1 PC

3) 0 p p

1PC S

4) 1 RCPC

0.3 0.5

p 0.8 1 PCPC

5)

p

0.3 1 3 2 4 3 5 4 61 1

2 3 4 5 6

0.3 1

3 μ = 2

heq-μ

0 0.3 0.5 1

0

5

10

15

20

25

30

0 2 4 6 8 10

heq(%)

μ 2 4 6 8

h

0

5

10

15

20

25

30

0 2 4 6 8 10

heq(%)

μ 0

5

10

15

20

25

30

0 2 4 6 8 10

heq(%)

μ

〔論文〕

Page 4: 5&4 ¦ @ ã ~ M 3&9µ) b I ö 6õ M %Ê'23&4 \5&4 @ ã ~ M 3&9µ) b "I ö _6õ M %Ê'2 ¥ ± Û ± Û7T Û#Õ ( Ñ ' ¥ ± Û ± Û7T G ( d Û $ ~ N G/ ¥ ± Û ± Û7T G ( $ d Û

1 p 11 5 6 = 1 p = 1 3

1) 2) 1

5 6

6 p

1) p

2) p PC

3)

5 6

1)2009 8 pp.789-790

2)1996 2 No.480 pp.151-160

3) 19984)

pp.63-66 No.410 19905)

pp.731-732 2014

0( RC) 0.8(PC) 1( PC)

0.3

1

0

5

10

15

20

25

30

0 2 4 6 8 10

5

0 heq(%)

μ

0

5

10

15

20

25

30

0 2 4 6 8 10

0 heq(%)

μ 0

5

10

15

20

25

30

0 2 4 6 8 10

(heq(%)

μ

0

5

10

15

20

25

30

0 2 4 6 8 10

0 heq(%)

μ 0

5

10

15

20

25

30

0 2 4 6 8 10

5

0 heq(%)

0

5μ 0

5

10

15

20

25

30

0 2 4 6 8 10

5

0 heq(%)

μ

p

heq-μ

1 2 3 4 5 61 3 2 4 3 5 4 6

0

1

2

3

4

5

6

0 100 200 300 400

(mm)

p 1 1

〔論文〕