ᐃཎ⌮࠾ࡼࡧ ᐃ᪉ἲ

(1)

 ᐃཎ⌮

ᐇᵓ㐀≀࡛ࡢ ᐃ≧ἣࡢ౛ࢆ෗┿ ࡟㸪 ᐃ࡟⏝࠸ࡿࣁ࣐ࣥࡢ඲యᅗࢆ

ᅗ ࡟♧ࡍࠋࣁ࣐ࣥࡣᡴᧁయ࡟ྲྀࡗᡭࢆ௜ࡅ࡚ᵓᡂࡉࢀ࡚࠸ࡿࠋ᥋ゐ᫬㛫 ࡣࢥࣥࢡ࣮ࣜࢺࡢ⾲㠃ࢆࣁ࣐࡛ࣥᡴᧁࡋ࡚ ᐃࡍࡿࠋᡴᧁయ࡟ࡣ⾪ᧁຍ㏿ᗘィ 㸦࿘Ἴᩘ⠊ᅖ

0.4Hz

_㹼

10kHz

㸧ࡀෆⶶࡉࢀ࡚࠾ࡾ㸪ඛ➃ࡢ⿕ᡴᧁ≀ࡢᮦ㉁ࡣ㗰

ᮦ࡛㸪ᙧ≧ࡣ⌫ෙᙧ≧࡛࠶ࡿࠋ᥋ゐ㠃ࡢ༙ᚄࡣ

7.5mm

_{࡛㸪⾪ᧁຍ㏿ᗘィࢆྵ}

ࡵࡓᡴᧁయࡢ㉁㔞ࡣ

18g

_࡛࠶ࡿࠋ

 ᐃ࡛ᚓࡽࢀࡿᡴᧁἼᙧࡢ౛ࢆᅗ ࡟♧ࡍࠋᡴᧁయࡀࢥࣥࢡ࣮ࣜࢺ⾲㠃

࡟᥋ゐࡍࡿ࡜⾪ᧁຍ㏿ᗘィ࡟ຍ㏿ᗘࡀ⏕ࡌ࡚᣺ᖜ್ࡀ኱ࡁࡃ࡞ࡾ㸪᥋ゐࡀ⤊஢

ࡍࡿ࡜᣺ᖜ್ࡣ᥋ゐ㛤ጞ๓࡜ྠ⛬ᗘ࡜࡞ࡿࠋᡴᧁἼᙧࡣୖ࡟ฝࡢᨺ≀⥺ࡢࡼ࠺

࡞Ἴᙧ࡜࡞ࡿࠋࡇࡢᡴᧁἼᙧ࡟࠾࠸࡚㸪᥋ゐࢆ㛤ጞࡋࡓ᫬้࠿ࡽ᣺ᖜ್ࡀ᭱኱

್࡜࡞ࡿ᫬้ࡲ࡛ࡀᡴᧁయࡀࢥࣥࢡ࣮ࣜࢺ⾲㠃࡟㈏ධࡋ࡚࠸ࡿ᫬㛫࡛࠶ࡾ㸪᣺

ᖜ್ࡀ᭱኱್࡜࡞ࡿ᫬้࠿ࡽ᥋ゐࢆ⤊஢ࡋࡓ᫬้ࡲ࡛ࡀᡴᧁయࡀࢥࣥࢡ࣮ࣜࢺ

෗┿ᐇᵓ㐀≀࡛ࡢ᥋ゐ᫬㛫ࡢ ᐃ≧ἣ

⾪ᧁຍ㏿ᗘィ

ඛ➃

ᡴᧁయ 0.2 0.3 0.4 0.5 0.6 0.7

᣺ᖜ(A.U.)

᫬㛫(ms)

᥋ゐ㛤ጞ ᥋ゐ⤊஢

ᅗ ᐃ࡟⏝࠸ࡿࣁ࣐ࣥࡢ඲యᅗ ᅗ ᐃ࡛ᚓࡽࢀࡿᡴᧁἼᙧࡢ౛

⾲㠃࠿ࡽ཯Ⓨࡋ࡚࠸ࡿ᫬㛫࡜࡞ࡿࠋᡴᧁయࡀࢥࣥࢡ࣮ࣜࢺ⾲㠃࡟㈏ධࡋ࡚࠸ࡿ

᫬㛫

t

m ࡣ㸪ࢥࣥࢡ࣮ࣜࢺ⾲㠃࡟ረᛶኚᙧ࡜ᙎᛶኚᙧࡀ⏕ࡌ࡚࠸ࡿ᫬㛫࡛࠶ࡾ㸪

ᘧ

(4.4)

_{࡟ࡼࡾ♧ࡉࢀࡿ} ^{4 . 1 4 )}ࠋࡲࡓ㸪ᡴᧁయࡀࢥࣥࢡ࣮ࣜࢺ⾲㠃࠿ࡽ཯Ⓨࡋ࡚

࠸ࡿ᫬㛫

t

E ࡣ㸪ࢥࣥࢡ࣮ࣜࢺ⾲㠃࡟ᙎᛶኚᙧࡀ⏕ࡌ࡚࠸ࡿ᫬㛫࡛࠶ࡾ㸪࣊ࣝ

ࢶ ᥋ ゐ ⌮ ㄽ ࡟ ᇶ ࡙ ࡁ ᘧ

(4.5)

࡟ ࡼ ࡾ ♧ ࡉ ࢀ ࡿ ^{4 . 1 5 )}ࠋ   ᐃ ࡉ ࢀ ࡿ ᥋ ゐ ᫬ 㛫 ࡣ ᘧ

(4.4)

_࡜ᘧ

(4.5)

_{࡟ࡼࡾỴᐃࡉࢀࡿࠋ}

ࠉࠉ

E S

m

2

t (4.4)

ࡓࡔࡋ㸪

E ( 2 S R

_S

_p

) M

_S

^ `

⁵

1

S 5 SC

2 C S SC S E

1

°¿

° ¾

½

°¯

° ®

­ ¸¸¹ ·

¨¨© §

R R V

M M A

t V V ^(4.5)

ࡓࡔࡋ㸪

^V

^S

^{1 Q}

^S2

^E

^S㸪

^V

^C

^{1 Q}

^C2

^E

^C

C C S SC C

S C

SC

M ( M M ) R ( R R ) R

M

㸪

ࡇࡇ࡟㸪

t

^m㸸ᡴᧁయࡀࢥࣥࢡ࣮ࣜࢺ⾲㠃࡬㈏ධࡋ࡚࠸ࡿ᫬㛫

(s)

_㸪

M

㸸㉁㔞

(kg)

_㸪

R

㸸༙ᚄ

(m)

_㸪

P㸸ᙎᛶ㝈⏺࡛ࡢᛂຊ㸪

t

E㸸ᡴᧁయࡀࢥࣥࢡ࣮ࣜࢺ⾲㠃࠿

ࡽ཯Ⓨࡋ࡚࠸ࡿ᫬㛫

(s)

_㸪

A

㸸ಀᩘ㸪

㸸࣏࢔ࢯࣥẚ㸪

E

㸸ᙎᛶಀᩘ

(kN/mm

²

)

_㸪

V

㸸ᡴᧁయࡢ᥋ゐ᫬ࡢ㏿ᗘ

(m/s)

_{࡛࠶ࡿࠋࡲࡓῧ࠼Ꮠ}

s

ࡣᡴᧁయ㸪ῧ࠼Ꮠ

c

ࡣࢥ

ࣥࢡ࣮ࣜࢺ⾲㠃ࢆ♧ࡋ࡚࠸ࡿࠋ

࡞࠾㸪ࣈࣜࢿࣝ◳ࡉヨ㦂ࡢ⪃࠼᪉࡟ᚑ࠼ࡤ㸪㈏ධ᫬㛫࡜ࣈࣜࢿࣝ◳ࡉ࡟ࡣᘧ

(4.6)

_{ࡢ㛵ಀࡀᡂ❧ࡍࡿ} ^{4 . 1 4 )}ࠋࡲࡓ㸪⿕ᡴᧁ≀ࡢ㉁㔞ࡀ኱ࡁࡃ㸪ࡉࡽ࡟㸪ࢥࣥ

ࢡ࣮ࣜࢺ⾲㠃ࡀᖹ㠃ࡢሙྜࡸ᭤㠃࡛࠶ࡗ࡚ࡶ༙ᚄࡀᡴᧁయࡢඛ➃ࡢ༙ᚄ࡟ᑐࡋ

࡚༑ศ࡟኱ࡁ࠸ሙྜ࡟ࡣ㸪ᘧ

(4.5)

_ࡢ

M

S C࡜

R

S Cࡣ

1

࡟཰᮰ࡍࡿࠋࡇࡢሙྜ㸪 ᘧ

(4.5)

_ࡣᘧ

(4.7)

࡟ࡼࡾ♧ࡍࡇ࡜ࡀ࡛ࡁࡿ ^{4 . 1 5 )}ࠋ

₂

S S S

2 S max

r

B

2 8 R t

_m

M R

M A

H f S

S

E _(4.6)

⁵

1

S 5 2

C 2 C S

2 S S E

1 1

1 ¸¸¹ ·

¨¨© §

°¿

° ¾

½

°¯

° ®

­

¸ ¸

¹

·

¨ ¨

©

§

V R E

E

M A

t (4.7)

ࡇࡇ࡟㸪

H

^B㸸ࣈࣜࢿࣝ◳ࡉ㸪

f

^r㸸㈏ධຊ㸪

A

^{m a x}㸸᥋ゐ㠃✚࡛࠶ࡿࠋᘧ

(4.6)

_ࡼ

ࡾ㸪

t

^m ࡣᡴᧁయࡢ㉁㔞࡜༙ᚄࡀ୍ᐃ࡛࠶ࢀࡤࢥࣥࢡ࣮ࣜࢺ⾲㠃ࡢࣈࣜࢿࣝ◳

ࡉ

H

^B ࡟ࡼࡗ࡚ኚ໬ࡍࡿࠋࡲࡓ㸪ᘧ

(4.7)

_ࡼࡾ㸪

t

^E ࡣᡴᧁయࡢ㉁㔞㸪ᙎᛶಀᩘ㸪

࣏࢔ࢯࣥẚ㸪༙ᚄ࡜ࢥࣥࢡ࣮ࣜࢺ⾲㠃ࡢ࣏࢔ࢯࣥẚࡀ୍ᐃ࡛࠶ࢀࡤ㸪ࢥࣥࢡࣜ

࣮ࢺ⾲㠃ࡢᙎᛶಀᩘ࡟ࡼࡗ࡚ኚ໬ࡍࡿࠋ௨ୖࡢᛶ㉁࠿ࡽ㸪ྠࡌࣁ࣐࡛ࣥ ᐃࡋ ࡓ᥋ゐ᫬㛫ࡣࢥࣥࢡ࣮ࣜࢺ⾲㠃ࡢᙎᛶಀᩘ࡜ࣈࣜࢿࣝ◳ࡉࢆ཯ᫎࡍࡿࡇ࡜ࡀศ

࠿ࡿࠋ

(2)

᥋ゐ᫬㛫ࡢ ᐃ᪉ἲ

᥋ゐ᫬㛫ࡢ ᐃ⤖ᯝࡢ౛ࢆᅗ ࡟♧ࡍࠋグ㘓Ἴᙧࡢฝ㒊ࡢᶓ㍈ࡀ᥋ゐ᫬

㛫

T

C࡛࠶ࡿࡀ㸪ᐈほⓗ࡟᥋ゐ᫬㛫

T

CࢆỴᐃࡍࡿࡓࡵ࡟࿘Ἴᩘゎᯒࢆ⾜࠸㸪ࣃ

࣮࣡ࢫ࣌ࢡࢺ࡛ࣝ᣺ᖜࡀ᭱኱࡜࡞ࡿ࿘Ἴᩘ

f

0ࡢ㏫ᩘ࠿ࡽ᥋ゐ᫬㛫

T

CࢆỴᐃࡍ

ࡿ᪉ἲ࡜ࡋ࡚࠸ࡿࠋࡓࡔࡋ㸪ᅗ Dࡢグ㘓ἼᙧࡣṇᘻἼࡀᴟᑠ್࡜࡞ࡿ

᫬้࠿ࡽ୍࿘ᮇࢆ⤒࡚㸪෌ࡧᴟᑠ್࡜࡞ࡿ᫬้ࡲ࡛ࡢ༢୍ࡢࣃࣝࢫ≧ࡢἼᙧ࡛

࠶ࡿࠋࡇࡢἼᙧ࡛ࡣ㸪࿘Ἴᩘゎᯒ࡟࠾࠸࡚༙࿘ᮇศࡢṇᘻἼ࡜ࡢ㆑ูࡀ୙᫂☜

࡜࡞ࡾ㸪ᅗ Eࡢࣃ࣮࣡ࢫ࣌ࢡࢺ࡛ࣝࡣప࿘Ἴᩘ㡿ᇦࡢᗈᖏᇦ࡛᣺ᖜ್

ࡀ኱ࡁࡃ࡞ࡾ㸪᣺ᖜࡀ᭱኱࡜࡞ࡿ࿘Ἴᩘࢆ≉ᐃ࡛ࡁ࡞࠸ࠋࡑࡇ࡛㸪グ㘓Ἴᙧ࡟

ᑐࡍࡿᚤศゎᯒ࡟ࡼࡾ㸪ึᮇ఩┦ࡀ

0

࡜࡞ࡿṇᘻἼࡢ୍࿘ᮇศࡢἼᙧࢆᚓ࡚

㸦ᅗ F㸧㸪ࡇࡢἼᙧ࡟ᑐࡍࡿ࿘Ἴᩘゎᯒ⤖ᯝ㸦ᅗ G㸧࠿ࡽ᥋ゐ

᫬㛫ࢆỴᐃࡍࡿ᪉ἲࢆ᥇⏝ࡋࡓ ^{4 . 1 6 )}ࠋ

ࡲࡓ㸪ᘧ

(4.7)

ࡼࡾ㸪᥋ゐ᫬㛫ࡢ ᐃ್ࡣᡴᧁయࡢ᥋ゐ᫬ࡢ㏿ᗘ࡟ࡼࡗ࡚ࡶ

ኚ໬ࡍࡿࡇ࡜࠿ࡽ㸪ᡴᧁᙉࡉ࡟ࡼࡗ࡚࠶ࡿ⛬ᗘࡢࣂࣛࢶ࢟ࡀ⏕ࡌࡿࡇ࡜࡜࡞ࡿࠋ ࡇࡢᙳ㡪ࢆ㝖ཤࡋ࡚ ᐃ⢭ᗘࢆྥୖࡉࡏࡿࡓࡵ㸪 ᐃࡣ

1

_{⟠ᡤ࡟ࡘࡁྍ⬟࡞㝈}

ࡾ㏆᥋ࡍࡿ

20

_{Ⅼ࡛⾜ࡗࡓࠋ}

20

Ⅼࡢ ᐃ್ࡢຍ⟬ᖹᆒ್ࢆồࡵ㸪೫ᕪࡀᖹᆒ್

0.2 0.3 0.4 0.5 グ㘓Ἴᙧ T_C

᫬้(ms) ^{5 ࿘Ἴᩘ10(kHz) 15 20}

Dグ㘓Ἴᙧ Eグ㘓Ἴᙧࡢࣃ࣮࣡ࢫ࣌ࢡࢺࣝ

0.2 0.3 0.4 0.5 グ㘓Ἴᙧ䜢 ᚤศ䛧䛯Ἴᙧ T_C

᫬้(ms) ^{5 ࿘Ἴᩘ10(kHz)15 20}

f₀䠙5.98kHz

Fグ㘓ἼᙧࡢᚤศἼᙧGᚤศἼᙧࡢࣃ࣮࣡ࢫ࣌ࢡࢺࣝ

ᅗ᥋ゐ᫬㛫ࡢ ᐃ᪉ἲࡢ౛

ࡢ

20%

௨ୖ࡟࡞ࡿ ᐃ್ࢆᲠ༷ࡋ࡚㸪෌ᗘ㸪ຍ⟬ᖹᆒ್ࢆồࡵࡿᖹᆒ໬ฎ⌮

࡟ࡼࡾྛ ᐃ⟠ᡤࡢ᥋ゐ᫬㛫ࢆỴᐃࡍࡿ᪉ἲ࡜ࡋࡓࠋ

4.2.3

౪ヨయ࡛ࡢ ᐃᐇ㦂 ^{4.17)㸪4.18)㸪4.19)}

(1)

ᐇ㦂ᴫせ

ᐇ㦂࡟⏝࠸ࡓ౪ヨయࢆ⾲ ࡟♧ࡍࠋᐇ㦂

1

_࡛ࡣ㸪

2

_౪ヨయࡢ

8

_㒊఩࡟࠾

࠸࡚᥋ゐ᫬㛫ࢆ ᐃࡋࡓࠋ౪ヨయࡢእほ≧ἣࢆ෗┿ ࡟♧ࡍࠋྛ㒊఩࡛ࡣ㸪 ᆺᯟ࡟ྜᯈᆺᯟࢆ౑⏝ࡋࡓ㠃࡜㏱Ỉᆺᯟࢆ౑⏝ࡋࡓ㠃ࡀ࠶ࡾ㸪ࢥࣥࢡ࣮ࣜࢺ⾲

ᒙ௜㏆ࡢရ㉁ࡣ౑⏝ࡋࡓᆺᯟ࡟ࡼࡗ࡚ኚ໬ࡍࡿ࡜⪃࠼ࡽࢀࡿࠋࡇࡢᆺᯟࡢ┦㐪

࡟ࡼࡿ᥋ゐ᫬㛫ࡢኚ໬ࢆẚ㍑ࡍࡿࡇ࡜࡜ࡋࡓࠋࡲࡓ㸪

L

_{ᆺ౪ヨయ࡛ࡣ}

25mm

⾲ᐇ㦂࡟⏝࠸ࡓ౪ヨయ≧ἣ

ᗏ∧ N 63.0 ቨ BB 59.0 ᗏ∧ N 49.5 ቨ BB 59.0 ᗏ∧ N 38.0 ቨ BB 45.5

N 35.0

N 70.0

40 50 60 40 50 60

ഃ㠃࡟ࡼࡗ࡚౑⏝ࡋࡓᆺᯟࡀ

㏱Ỉᆺᯟ࡜ྜᯈᆺᯟ࡜␗࡞ࡿࠋ ᐇ㦂ྡ⛠ ౪ヨయྡ⛠ ࢭ࣓ࣥࢺ

✀㢮 Ỉࢭ࣓ࣥࢺ

ẚ(%) 㣴⏕᪉ἲ

ᐇ㦂1

C Lᆺ ౪ヨయ

A B

ཌቨ

࣎ࢵࢡࢫ౪ヨయ

ⷧቨ

N

BB

Ỉࢭ࣓ࣥࢺẚẖ࡟3యస〇ࠋ

‵₶㣴⏕ᮇ㛫ࡀ

1᪥㸪7᪥㸪28᪥࡜␗࡞ࡿࠋ Ỉࢭ࣓ࣥࢺẚẖ࡟3యస〇ࠋ

‵₶㣴⏕ᮇ㛫ࡀ

1᪥㸪9᪥㸪28᪥࡜␗࡞ࡿࠋ ᐇ㦂2 ∧౪ヨయ

ቨ

ᗏ∧

ⷧቨ ཌቨ

㏱ỈᆺᯟЍ Ћྜᯈᆺᯟ

෗┿ᐇ㦂ࡢ౪ヨయ≧ἣ㸦ᕥ㸸/ᆺ౪ヨయ㸪ྑ㸸࣎ࢵࢡࢫ౪ヨయ㸧

ࡢᑠᚄࢥ࢔ ^{4 . 1 0 )}ࢆ᥇ྲྀࡋ㸪⾲㠃࠿ࡽ῝ࡉ

50mm

௜㏆ࡲ࡛ࡢᅽ⦰ᙉᗘࢆヨ㦂ࡋࡓࠋ ࡇࡢᅽ⦰ヨ㦂⤖ᯝ࡜ ᐃࡋࡓ᥋ゐ᫬㛫࡜ࢆẚ㍑ࡋࡓࠋ

ᐇ㦂

2

ࡢ౪ヨయ࡛ࡢ ᐃ≧ἣࢆ෗┿ ࡟♧ࡍࠋ౪ヨయᙧ≧ࡣ

1200

_㸦㧗

ࡉ㸧™

900

_㸦ᖜ㸧™

D450mm

㸦ཌࡉ㸧㸪ࢭ࣓ࣥࢺ✀㢮ࡣᬑ㏻࣏ࣝࢺࣛࣥࢻࢭ࣓

ࣥࢺ㸪㧗⅔ࢭ࣓ࣥࢺ

B

_✀ࡢ

2

✀㢮࡛࠶ࡿࠋྛࢭ࣓ࣥࢺ✀㢮࡛

9

_{యࡢ౪ヨయࢆ}

స〇ࡋ㸪Ỉࢭ࣓ࣥࢺẚࢆ

40%

_㸪

50%

_㸪

60%

_ࡢ

3

_{✀㢮㸪‵₶㣴⏕᪥ᩘࢆ}

1

_᪥㸪ࢥ

ࣥࢡ࣮ࣜࢺᶆ‽♧᪉᭩ࡢᶆ‽ࡢ㣴⏕ᮇ㛫㸦ᬑ㏻࣏ࣝࢺࣛࣥࢻࢭ࣓ࣥࢺ࡛

7

_᪥㸪 㧗⅔ࢭ࣓ࣥࢺ

B

_✀࡛

9

_᪥㸧㸪

28

_᪥ࡢ

3

✀㢮࡜ࡋࡓࠋỈࢭ࣓ࣥࢺẚࡸ‵₶㣴⏕

᪥ᩘࡀ␗࡞ࡿࡇ࡜࡟ࡼࡾ㸪ࢥࣥࢡ࣮ࣜࢺ⾲ᒙࡢရ㉁ࡣኚ໬ࡍࡿ࡜⪃࠼ࡽࢀࡿࠋ ࡇࢀࡽࡢ᮲௳ࡢ┦㐪࡟ࡼࡿ᥋ゐ᫬㛫ࡢኚ໬ࢆẚ㍑ࡍࡿࡇ࡜࡜ࡋࡓࠋࡲࡓ㸪᥋ゐ

᫬㛫ࡢ ᐃ⤖ᯝࡢᑐẚศᯒࢆࡍࡿࡓࡵ㸪

100

_™

100

_™

400mm

_{ࡢゅᰕ౪ヨయࢆస}

〇ࡋ㸪ಁ㐍୰ᛶ໬ヨ㦂ࢆ⾜࡞ࡗࡓࠋゅᰕ౪ヨయࡣ᥋ゐ᫬㛫ࢆ ᐃࡋࡓ౪ヨయ࡜

ྠ୍ࡢ㓄ྜ㸪‵₶㣴⏕᪥ᩘ࡛࠶ࡾ㸪

2060%RH

㞺ᅖẼไᚚヨ㦂ᐊ࡛᭚㟢ࡋࡓ ᚋ࡟ಁ㐍୰ᛶ໬ヨ㦂ࢆ⾜࡞ࡗࡓࠋ

(2)

ᐇ㦂⤖ᯝ

a)

ᐇ㦂

1

^{4 . 1 7 )}

ᐇ㦂

1

ࡢྛ㒊఩࡛ࡢ᥋ゐ᫬㛫ࡢ ᐃ⤖ᯝࢆ⾲ 㸪ᅗ ࡟♧ࡍࠋᐇ㦂

1

࡛ࡣ㸪

2

_౪ヨయࡢ

8

㒊఩࡛ ᐃࡋ㸪ྛ㒊఩࡛ࡣᆺᯟ࡟ྜᯈᆺᯟࢆ౑⏝ࡋࡓ㠃࡜

㏱Ỉᆺᯟࢆ౑⏝ࡋࡓ㠃࡜ࡢ

2

_{㠃ࡀ࠶ࡿࠋᅗ} ࡣ㸪⦪㍈ࢆ㏱Ỉᆺᯟ࡛ࡢ᥋ゐ

᫬㛫㸪ᶓ㍈ࢆྜᯈ࡛ࡢ᥋ゐ᫬㛫࡜ࡋ㸪ྠ୍ࡢ㒊఩࡛ࡢᆺᯟࡢ┦㐪࡟ࡼࡿ ᐃ⤖

ᯝࡢኚ໬ࢆẚ㍑ࡋࡓᅗ࡛࠶ࡿࠋ ᐃ⤖ᯝࡼࡾ㸪౛࠼ࡤ

L

_ᆺ౪ヨయ

A

_{ᗏ∧࡛ࡣ㸪}

ྜᯈᆺᯟࢆ౑⏝ࡋࡓ㠃࡛ ᐃࡉࢀࡓ᥋ゐ᫬㛫ࡣ

124.1s

_{࡛࠶ࡿࡢ࡟ᑐࡋ࡚㸪㏱}

෗┿ᐇ㦂ࡢ౪ヨయ࡛ࡢ ᐃ≧ἣ

Ỉᆺᯟࢆ౑⏝ࡋࡓ㠃࡛ࡣ

99.9s

࡜࡞ࡾ㸪㏱Ỉᆺᯟࢆ౑⏝ࡋࡓ㠃ࡢ᪉ࡀ ᐃࡉ

ࢀࡿ᥋ゐ᫬㛫ࡀ

20s

௨ୖ▷ࡃ࡞ࡗࡓࠋ௚ࡢ㒊఩࡛ࡶྠᵝ࡟㸪㏱Ỉᆺᯟࢆ౑⏝

ࡋࡓ㠃࡛ࡣ ᐃࡉࢀࡿ᥋ゐ᫬㛫ࡀᴫࡡ

20s

_{௨ୖ▷ࡃ࡞ࡗࡓࠋ}

ࡇ ࡇ ࡛ 㸪

L

ᆺ ౪ ヨ య ࡛ ࡣ

25mm

ࡢ ᑠ ᚄ ࢥ ࢔ ࢆ ᥇ ྲྀ ࡋ ࡚ 㸪 ⾲ 㠃 ࠿ ࡽ ῝ ࡉ

50mm

௜㏆ࡲ࡛ࡢᅽ⦰ᙉᗘࢆヨ㦂ࡋࡓࡀ㸪 ᐃࡋࡓ᥋ゐ᫬㛫࡜ᅽ⦰ᙉᗘヨ㦂࡜

ࡢẚ㍑ࢆᅗ ࡟♧ࡍࠋ୧⪅ࡣ┦㛵ಀᩘ

0.77

࡜࠶ࡿ⛬ᗘࡢ┦㛵㛵ಀࡀ☜ㄆ ࡉࢀࡓࠋ๓㏙ࡢ࡜࠾ࡾ㸪㏱Ỉᆺᯟࢆ౑⏝ࡋࡓ㠃࡛ࡣ ᐃࡉࢀࡿ᥋ゐ᫬㛫ࡀ▷ࡃ

࡞ࡗࡓࡀ㸪ᑠᚄࢥ࢔࡟ࡼࡿ῝ࡉ

50mm

௜㏆ࡲ࡛ࡢᅽ⦰ᙉᗘࡶᙉࡃ࡞ࡿഴྥࡀ

࠶ࡾ㸪ࡇࢀࡽࡢ⤖ᯝࢆ཯ᫎࡋࡓࡶࡢ࡛࠶ࡿࠋࡘࡲࡾ㸪㏱Ỉᆺᯟࢆ౑⏝ࡍࡿࡇ࡜

࡟ࡼࡾ㸪ࢥࣥࢡ࣮ࣜࢺ⾲ᒙ௜㏆ࡢရ㉁ࡣྥୖࡋ㸪ᙎᛶಀᩘ࡜ࣈࣜࢿࣝ◳ࡉࡣ኱

ࡁࡃ࡞ࡿ࡜⪃࠼ࡽࢀ㸪᥋ゐ᫬㛫ࡢ ᐃ⤖ᯝࡣࡇࡢᙎᛶಀᩘ࡜ࣈࣜࢿࣝ◳ࡉࡢኚ

໬࡟ᑐᛂࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋࡓࡔࡋ㸪᥋ゐ᫬㛫࡜ᑠᚄࢥ࢔࡟ࡼࡿᅽ⦰ᙉᗘ

⾲ᐇ㦂㸸ྛ౪ヨయ࡛ࡢ᥋ゐ᫬㛫ࡢ ᐃ⤖ᯝ

㏱Ỉᆺᯟ ྜᯈᆺᯟ

ᗏ∧ N 99.9 124.1

ቨ BB 97.9 109.7

ᗏ∧ N 104.5 124.5

ቨ BB 91.7 114.8

ᗏ∧ N 101.6 122.3

ቨ BB 81.6 102.8

N 81.9 120.5

N 99.9 124.1

᥋ゐ᫬㛫 ᐃ್㸦s㸧

A B C

࣎ࢵࢡࢫ౪ヨయ

ⷧቨ ཌቨ

౪ヨయྡ⛠ ࢭ࣓ࣥࢺ

✀㢮

Lᆺ ౪ヨయ

Lᆺ ౪ヨయ

80 85 90 95 100 105 110 115 120 125 80

85 90 95 100 105 110 115 120 125

㏱Ỉᆺᯟ䛷䛾᥋ゐ᫬㛫䚷(䃛s)

ྜᯈᆺᯟ䛷䛾᥋ゐ᫬㛫䚷(䃛s) LᆺAᗏ∧, ቨ

LᆺBᗏ∧, ቨ LᆺCᗏ∧, ቨ 䢊䢚䡫䡴䡹ⷧቨ, ཌቨ

ᅗᐇ㦂㸸ᆺᯟࡢ┦㐪࡟ࡼࡿ᥋ゐ᫬㛫ࡢẚ㍑

ヨ㦂ࡢ⤖ᯝࡣᙉ࠸┦㛵㛵ಀ࡟ࡣ࡞ࡗ࡚࠸࡞࠸ࠋࡇࢀࡣ㸪᥋ゐ᫬㛫ࡢ ᐃ⤖ᯝ࡟

཯ᫎࡍࡿࢥࣥࢡ࣮ࣜࢺ⾲㠃࠿ࡽࡢ῝ࡉࡢ⠊ᅖࡣ㸪ᑠᚄࢥ࢔ࡢヨ㦂ᑐ㇟ࡢ⠊ᅖ࡛

࠶ࡿ⾲㠃࠿ࡽ῝ࡉ

50mm

௜㏆ࡲ࡛࡜ࡣ୍⮴ࡋ࡚࠸࡞࠸ࡇ࡜࡟ࡼࡿࡶࡢ࡜⪃࠼

ࡽ࠼ࡿࠋ᥋ゐ᫬㛫ࡢ ᐃ⤖ᯝ࡟཯ᫎࡍࡿࢥࣥࢡ࣮ࣜࢺ⾲㠃࠿ࡽࡢ῝ࡉࡢ⠊ᅖࡣ㸪 ᑠᚄࢥ࢔ࡢヨ㦂ᑐ㇟ࡢ⠊ᅖࡼࡾࡶὸ࠸࡜⪃࠼ࡽ࠼ࡿࠋ

b)

ᐇ㦂

2

4 . 1 8 )_㸪4 . 1 9 )

ᐇ㦂

2

_{࡛౑⏝ࡋࡓ}

9

౪ヨయ࡛ࡢ᥋ゐ᫬㛫ࡢ ᐃ⤖ᯝࢆᅗ ࡟♧ࡍࠋ ᐃ ࡉࢀࡿ᥋ゐ᫬㛫ࡣ㸪ྠࡌỈࢭ࣓ࣥࢺẚࡢࢥࣥࢡ࣮ࣜࢺ࡛ࡣ㸪‵₶㣴⏕᪥ᩘࡀ㛗

80 85 90 95 100 105 110 115 120 125 30

35 40 45 50

᥋ゐ᫬㛫䚷(䃛s)

ᑠᚄ䝁䜰䛻䜘䜛ᅽ⦰ᙉᗘ䠄N/mm2 䠅 ቨ㒊㏱Ỉ

ቨ㒊ྜᯈ ᗏ∧㏱Ỉ ᗏ∧ྜᯈ

┦㛵ಀᩘ 0.77

ᅗᐇ㦂㸸ᑠᚄࢥ࢔࡟ࡼࡿᅽ⦰ᙉᗘ࡜᥋ゐ᫬㛫࡜ࡢẚ㍑

100 110 120 130 140 150 160

N㸸W/C40 N㸸W/C50 N㸸W/C60 BB㸸W/C40 BB㸸W/C50 BB㸸W/C60

᥋ゐ᫬㛫㸦s㸧

ࢭ࣓ࣥࢺ✀㢮㸸Ỉࢭ࣓ࣥࢺẚ

1᪥ 7(9)᪥ 28᪥

‵₶㣴⏕ᮇ㛫

ᅗᐇ㦂㸸ྛ౪ヨయ࡛ࡢ᥋ゐ᫬㛫ࡢ ᐃ⤖ᯝ

ࡃ࡞ࡿ࡯࡝㸪ࡲࡓ㸪ྠࡌ‵₶㣴⏕᪥ᩘࡢࢥࣥࢡ࣮ࣜࢺ࡛ࡣ㸪Ỉࢭ࣓ࣥࢺẚࡀᑠ ࡉࡃ࡞ࡿ࡯࡝㸪▷ࡃ࡞ࡿ⤖ᯝ࡜࡞ࡗࡓࠋ‵₶㣴⏕᪥ᩘࡀ㛗ࡃ࡞ࡿࡇ࡜㸪Ỉࢭ࣓

ࣥࢺẚࡀᑠࡉࡃ࡞ࡿࡇ࡜࡟ࡼࡾ㸪ࢥࣥࢡ࣮ࣜࢺ⾲ᒙ௜㏆ࡢရ㉁ࡣྥୖࡋ㸪ᙎᛶ ಀᩘ࡜ࣈࣜࢿࣝ◳ࡉࡀ኱ࡁࡃ࡞ࡿ࡜⪃࠼ࡽࢀࡿࡀ㸪᥋ゐ᫬㛫ࡢ ᐃ⤖ᯝࡣࡇࢀ

ࡽࡢኚ໬࡟ᑐᛂࡋ࡚࠸ࡿࠋ

ࡲࡓ㸪᥋ゐ᫬㛫ࢆ ᐃࡋࡓ౪ヨయ࡜ྠ୍ࡢ㓄ྜ㸪‵₶㣴⏕᪥ᩘࡢゅᰕ౪ヨయ

࡛⾜ࡗࡓಁ㐍୰ᛶ໬ヨ㦂ࡢ⤖ᯝ࡜᥋ゐ᫬㛫ࡢ ᐃ⤖ᯝ࡜ࡢẚ㍑ࢆ⾲ 㸪ᅗ ࡟♧ࡍࠋ୰ᛶ໬㏿ᗘಀᩘࡣࢥࣥࢡ࣮ࣜࢺ⾲ᒙ௜㏆ࡢရ㉁ࡢኚ໬࡟ᑐᛂࡋ

࡚ኚ໬ࡋ㸪ࢥࣥࢡ࣮ࣜࢺ⾲ᒙ௜㏆ࡢရ㉁ࡀྥୖࡍࢀࡤ୰ᛶ໬㏿ᗘಀᩘࡣᑠࡉࡃ

࡞ࡿࠋࡇࡢ⤖ᯝ࠿ࡽ㸪᥋ゐ᫬㛫࡜୰ᛶ໬㏿ᗘಀᩘ࡟ࡣ┦㛵㛵ಀࡀ☜ㄆࡉࢀ㸪┦

㛵ಀᩘࡣᬑ㏻࣏ࣝࢺࣛࣥࢻࢭ࣓ࣥࢺ࡛

0.830

_{㸪㧗⅔ࢭ࣓ࣥࢺ}

B

_✀࡛

0.930

_࡛࠶

ࡗࡓࠋࡓࡔࡋ㸪ᅗ ࡛ᚓࡽࢀࡓᅇᖐ┤⥺ࢆࢭ࣓ࣥࢺ✀㢮࡛ẚ㍑ࡍࡿ࡜㸪౛

࠼ࡤ᥋ゐ᫬㛫

140s

࡛ࡢ୰ᛶ໬㏿ᗘಀᩘࡣ㸪ᬑ㏻࣏ࣝࢺࣛࣥࢻࢭ࣓ࣥࢺ࡛ࡣ

⣙

2.5mm/

_᪥ ^{0 . 5}_{㸪㧗⅔ࢭ࣓ࣥࢺ}

B

_✀࡛ࡣ⣙

2.0mm/

_᪥ ^{0 . 5}_{࡜ࢭ࣓ࣥࢺ✀㢮࡟ࡼࡗ}

࡚␗࡞ࡗࡓࠋࡘࡲࡾ㸪 ᐃࡉࢀࡿ᥋ゐ᫬㛫࡜ࢥࣥࢡ࣮ࣜࢺ⾲ᒙ௜㏆ࡢရ㉁࡟ࡣ

┦㛵㛵ಀࡀ࠶ࡿࡶࡢࡢ㸪ࢥࣥࢡ࣮ࣜࢺࡢ౑⏝ᮦᩱࡸ㓄ྜ࡟ࡼࡗ࡚␗࡞ࡿ┦㛵㛵 ಀ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋ

⾲ᐇ㦂㸸ྛ౪ヨయ࡛ࡢ᥋ゐ᫬㛫࡜ಁ㐍୰ᛶ໬ヨ㦂⤖ᯝ࡜ࡢẚ㍑

1 128.4 0.90

7 121.3 0.71

28 127.0 0.23

1 139.5 1.60

7 132.0 1.50

28 130.7 1.30

1 144.9 2.60

7 137.4 2.20

28 131.8 2.00

1 131.3 1.30

9 127.2 1.10

28 128.8 0.64

1 141.9 2.10

9 135.6 1.40

28 134.0 1.50

1 138.1 2.50

9 144.2 2.50

28 156.0 3.30

᥋ゐ᫬㛫 ᐃ್

㸦s㸧

୰ᛶ໬㏿ᗘಀᩘ

(mm/᪥^0.5)

BB N

40

50

60

40

50

60 ࢭ࣓ࣥࢺ✀㢮 Ỉࢭ࣓ࣥࢺ

ẚ(%)

‵₶㣴⏕᪥ᩘ

㸦᪥㸧

(3)

ᐇᵓ㐀≀࡛ࡢヨ㦂᪉ἲࡢ᳨ウ

(2)

࡟♧ࡋࡓᐇ㦂⤖ᯝࡼࡾ㸪ᮏἲ࡟ࡼࡾ ᐃࡉࢀࡿ᥋ゐ᫬㛫ࡣ㸪ࢥࣥࢡ࣮ࣜ

ࢺࡢ᪋ᕤ᫬࡟౑⏝ࡍࡿᆺᯟࡢ✀㢮㸪Ỉࢭ࣓ࣥࢺẚ㸪‵₶㣴⏕᪥ᩘ㸪ࡇࢀࡽࡢ᮲

௳ࡢ┦㐪࡟ࡼࡿࢥࣥࢡ࣮ࣜࢺ⾲ᒙ௜㏆ࡢရ㉁ࡢኚ໬࡟ᑐᛂࡋ࡚ኚ໬ࡍࡿࡇ࡜ࡀ

☜ㄆࡉࢀࡓࠋࡇࡢ⤖ᯝ࠿ࡽ㸪᥋ゐ᫬㛫ࢆ ᐃࡍࡿࡇ࡜࡟ࡼࡾ㸪᪋ᕤࡉࢀࡓࢥࣥ

ࢡ࣮ࣜࢺ⾲ᒙ௜㏆ࡢရ㉁ࢆホ౯࡛ࡁࡿࡶࡢ࡜ᮇᚅࡉࢀࡿࠋࡓࡔࡋ㸪 ᐃࡉࢀࡿ

᥋ゐ᫬㛫࡜ࢥࣥࢡ࣮ࣜࢺ⾲ᒙ௜㏆ࡢရ㉁࡜ࡢ┦㛵㛵ಀࡣࢥࣥࢡ࣮ࣜࢺࡢ౑⏝ᮦ

ᩱࡸ㓄ྜ࡟ࡼࡗ࡚␗࡞ࡿࡇ࡜ࡶ☜ㄆࡉࢀࡓࠋ௨ୖࡢ⤖ᯝ࠿ࡽᥦ᱌ࡋࡓ㸪᥋ゐ᫬

㛫ࡢ ᐃ࡟ࡼࡿ㸪᪂タࢥࣥࢡ࣮ࣜࢺࡢ⾲ᒙ௜㏆ࡢရ㉁ホ౯ࡢᡭ㡰ࡢ୍౛ࢆᅗ ࡟♧ࡍࠋ

ᅗ ࡢ୍౛ࡣ㸪᪂タࡍࡿᵓ㐀యࢥࣥࢡ࣮ࣜࢺࡢ㣴⏕᪉ἲࢆᕤኵࡍࡿࡇ࡜

࡟ࡼࡾ㸪⾲ᒙ௜㏆ࡢရ㉁ࡀྥୖࡋࡓࡇ࡜ࢆホ౯ࡍࡿᡭ㡰ࢆ♧ࡋࡓࡶࡢ࡛࠶ࡿࠋ

ุᐃᇶ‽್ࢆタᐃࡍࡿࡓࡵࡢ౪ヨయࢆ㸪ヨ㦂ᑐ㇟ࡢᵓ㐀యࢥࣥࢡ࣮ࣜࢺࡢ㓄ྜ

ィ⏬᭩࡟♧ࡉࢀࡓࢥࣥࢡ࣮ࣜࢺ࡜༢఩ᐜ✚㉁㔞㸪Ỉࢭ࣓ࣥࢺẚ㸪ࢥࣥࢡ࣮ࣜࢺ ࡢ〇㐀ᕤሙ㸪౑⏝ᮦᩱ➼ࡀ඲࡚➼ࡋ࠸ྠ୍ᮦᩱ㸪ྠ୍㓄ྜࡢࢥࣥࢡ࣮ࣜࢺ࡟ࡼ

ࡾస〇ࡍࡿࠋࡇࡢ౪ヨయ࡛ ᐃࡋࡓ᥋ゐ᫬㛫࡜ホ౯ᑐ㇟ࡢᵓ㐀యࢥࣥࢡ࣮ࣜࢺ

࡛ ᐃࡋࡓ᥋ゐ᫬㛫࡜ࢆẚ㍑ࡋ࡚㸪ྜྰࢆุᐃࡍࡿᡭ㡰࡛࠶ࡿࠋ౪ヨయࡢ㣴⏕

᪉ἲࡣ㸪Ⓨὀ⪅࡞࡝ࡀせồࡍࡿ㣴⏕᪉ἲ࡛࠶ࡿᶆ‽ⓗ࡞ᇶ‽㢮࡟♧ࡉࢀࡓ㣴⏕

᪉ἲ࡜ࡍࡿࠋᵓ㐀యࢥࣥࢡ࣮ࣜࢺ࡛ ᐃࡋࡓ᥋ゐ᫬㛫ࡀ㸪౪ヨయ࡛ ᐃࡋࡓ᥋

0 1 2 3

120 130 140 150

᥋ゐ᫬㛫䚷(䃛s) 䝉䝯䞁䝖✀㢮䠖N

┦㛵ಀᩘ䠖0.830

୰ᛶ໬㏿ᗘಀᩘ䠄mm/᪥^0.5䠅

䚷䚷40%,50%,60%

28᪥䠖 , ,

7᪥䠖 , , 1᪥䠖 , ,

0 1 2 3

120 130 140 150

᥋ゐ᫬㛫(䃛s) 䝉䝯䞁䝖✀㢮䠖BB

┦㛵ಀᩘ䠖0.930

୰ᛶ໬㏿ᗘಀᩘ䠄mm/᪥^0.5䠅

䚷䚷40%,50%,60%

28᪥䠖 , ,

9᪥䠖 , , 1᪥䠖 , ,

ᅗᐇ㦂㸸ྛ౪ヨయ࡛ࡢ᥋ゐ᫬㛫࡜ಁ㐍୰ᛶ໬ヨ㦂⤖ᯝ࡜ࡢẚ㍑

ゐ᫬㛫ࡼࡾ▷ࡃ࡞ࢀࡤ㸪᪋ᕤ⪅ࡀ᪂タࡢᵓ㐀యࢥࣥࢡ࣮ࣜࢺ࡛㣴⏕᪉ἲࢆᕤኵ ࡋࡓࡇ࡜࡟ࡼࡾ㸪ࢥࣥࢡ࣮ࣜࢺ⾲ᒙ௜㏆ࡢရ㉁ࡀྥୖࡋࡓࡶࡢ࡜ホ౯࡛ࡁࡿࠋ

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