উঞ५ॺঞ५ॺ॥থॡজ‫৾ੵॺش‬ভ‫ؙ‬ਸ਼їћ৚३থএ४क़঒૛ધૐ‫ق‬їѕіќফіѕা‫ك‬〔論文〕⭉㣗ຎ໬ࡋࡓ㹎㹁㗰ᮦࢆ᭷ࡍࡿ࣏ࢫࢸࣥ㹎㹁ᱱࡢຊᏛⓗᛶ≧ᇸ⋢኱Ꮫ  ṇ఍ဨ ᕤಟ ‫ۑ‬ᶓ⏣ ᩄᗈᇸ⋢኱Ꮫ     ,VXUX :,-$<$:$5'$1(ᇸ⋢኱Ꮫ  ṇ఍ဨ ᕤ༤  ╬ዲ ᏹྐ
Abstract㸸Rupture of the tendons due to corrosion is the main cause of damage in the prestressedconcrete (PC) bridges and the degree of corrosion in the PC bridges influences the load carrying capacity.
Therefore, it is important to establish an appropriate evaluation method to make clear the performance ofthe damaged PC girders, so that they can be repaired efficiently.In this study, bending tests were carriedout for PC beams having damaged tendons. The test variables were the loading type, rupture or damaged
location of the tendons and the degree of damage in the PC tendons. Accelerated corrosion test was
conducted to have different degree of damage in the tendons. Furthermore, bending tests for the PC
beames with insufficient grout filling and grout re-filling were carried out and the load carrying capacity
were compared with the non-damaged PC beams.
Key words㸸 PC tendon rupture , Performance evaluation , Accelerated corrosion test , Grout re-filling㸯㸬ࡣࡌࡵ࡟
3&ᶫࡢሷᐖ࡟ࡘ࠸࡚ࡣࢥࣥࢡ࣮ࣜࢺෆ㒊ࡢ3&㗰ᮦࡢ⭉㣗ࡸ◚᩿࡞࡝ࡢᦆയࡀ⪏Ⲵᛶ⬟⮬య࡟ᙳ㡪ࢆཬࡰࡋ࡚࠸ࡿሙྜࡀ࠶ࡾ㸪ࡇࡢࡼ࠺࡞ሷᐖຎ໬ࡋࡓ3&ᶫࡢᛶ⬟ホ౯࡟㛵ࡍࡿ◊✲ࡀ⢭ຊⓗ࡟㐍ࡵࡽࢀ࡚࠸ࡿ㸯㸧ࠋࡇࢀࡽࡢᛶ⬟ホ౯ࢆ⾜࠺ୖ࡛㸪3&㗰ᮦ⭉㣗ᗘࡸᦆയ⟠ᡤࡀ3&᱆඲యࡢᵓ㐀≉ᛶ࡟୚࠼ࡿᙳ
㡪ࢆ᫂ࡽ࠿࡟ࡍࡿᚲせࡀ࠶ࡿࡀ㸪3&㗰ࡼࡾ⥺ࢆ⏝࠸ࡓ࣏ࢫࢺࢸࣥࢩࣙࣥ3&᱆࡟ࡘ࠸࡚ࡣ༑ศ࡟◊✲ࡉࢀ࡚࠸࡞࠸≧ἣ࡛࠶ࡿࠋᮏ◊✲࡛ࡣ࣏ࢫࢺࢸࣥࢩࣙࣥ3&ᱱ౪ヨయࢆᑐ㇟࡜ࡋ࡚㸪⭉㣗ಁ㐍ᐇ㦂࡟ࡼࡾຎ໬ࡢ⟠ᡤ࠾ࡼࡧ⛬ᗘࢆኚ໬ࡉࡏ࡚౪ヨయෆ㒊ࡢ3&㗰ᮦࢆ⭉㣗ᦆയࡉࡏࡓᚋ࡟᭤ࡆ㍕Ⲵᐇ㦂ࢆᐇ᪋ࡍࡿࡇ࡜࡛㸪ࡑࢀࡽࡀ⪏Ⲵᛶ⬟࡟୚࠼ࡿᙳ㡪ࢆ☜ㄆࡋࡓࠋࡲࡓ㸪㒊ศⓗ࡟ࢢࣛ࢘ࢺᮍ඘ሸ⟠ᡤࢆタࡅࡓ
3&ᱱ࡜㗰ᮦ◚᩿ᚋ࡟ࢢࣛ࢘ࢺ෌ὀධࢆᐇ᪋ࡋࡓᱱ࡟ࡘ࠸࡚ࡶྠᵝ࡟᭤ࡆ㍕Ⲵᐇ㦂ࢆᐇ᪋ࡋ㸪ࢢࣛ࢘ࢺ෌ὀධ࡟ࡼࡿ⪏Ⲵᛶ⬟ࡢᅇ᚟ຠᯝࢆ☜ㄆࡋࡓࠋ
㸰㸬ᦆയ᱆ࡢ᭤ࡆ㍕Ⲵᐇ㦂ᴫせ3&㗰ࡼࡾ⥺
6:35%/ᮏࡼࡾPP

࡞ᱱ࡛࠶ࡿࠋ3&㗰ࡼࡾ⥺6:35%/PPࢆ౑⏝ࡋ㸪⭉㣗ಁ㐍ᐇ㦂ࢆᐇ᪋ࡋࡓᚋ࡟᭤ࡆ㍕Ⲵᐇ㦂ࢆ⾜ࡗࡓࠋ&$6(ࡣࢢࣛ࢘ࢺᮍ඘ሸ༊㛫࡛ࡢ3&㗰ᮦ◚᩿࠾ࡼࡧࡑࡢᚋࡢࢢࣛ࢘ࢺ෌ὀධࡀ⪏Ⲵᛶ⬟࡟୚࠼ࡿຠ

'ࢆ᳨ウࡍࡿࢣ࣮ࢫ࡛࠶ࡾ㸪&$6(ࡀᇶᮏ࡜࡞ࡿ೺඲'ᮦࡢᦆയ⟠ᡤ࠾ࡼࡧᦆയᗘࡀ⪏Ⲵᛶ⬟࡟୚࠼ࡿᙳ㡪ᡤ࡜㍕Ⲵ᪉ἲࢆᅗ㸰࡟♧ࡍࠋ&$6(ࡣ3&㗰ᐇ㦂౪ヨయࡢ᩿㠃ᅗࢆᅗ㸯࡟㸪3&㗰ᮦࡢ⭉㣗⟠3&㗰⥺
6:3'/PP'

㸺&$6(㸼'

㸺&$6(㸼ᅗ㸯 ౪ヨయ᩿㠃ᅗᯝࢆ☜ㄆࡍࡿࢣ࣮ࢫ࡛࠶ࡿࠋ᩿㠃ෆᮏࡢ࢖ࣥࢹࣥࢺ3&㗰⥺6:3'/ȭPPࡢ࠺ࡕᕥྑᮏࢆᑐ㇟࡟㸪ᅗ㸰࡟♧ࡍ࡜࠾ࡾࢢࣛ࢘ࢺᮍ඘ሸ༊㛫ࢆタࡅࡓ࠺࠼࡛㸪ᱱഃ㠃࠿ࡽȭPPࡢࢥࣥࢡ࣮ࣜࢺࢥ࢔࣮࣎ࣜࣥ
ࢢࢆ⏝࠸࡚ᶵᲔⓗ࡟ษ᩿ࡍࡿࡇ࡜࡛ᦆയࢆ୚࠼ࡓࠋ&$6(ࡣࢢࣛ࢘ࢺᮍ඘ሸ༊㛫࡛3&㗰ᮦࢆษ᩿ࡋࡓ
≧ែ㸪&$6(ࡣ&$6(࡟ᑐࡋ࡚ࢢࣛ࢘ࢺ෌ὀධࢆ⾜ࡗࡓ≧ែ࡟ᑐࡋ࡚᭤ࡆ㍕Ⲵᐇ㦂ࢆᐇ᪋ࡋࡓࠋ౑⏝উঞ५ॺঞ५ॺ॥থॡজ‫৾ੵॺش‬ভ‫ؙ‬ਸ਼їћ৚३থএ४क़঒૛ધૐ‫ق‬їѕіќফіѕা‫ك‬〔論文〕

⾲⾲㸯 ࢥࣥࢡࢡ࣮ࣜࢺࡢᮦ
ᮦᩱㅖඖᅽ⦰
⦰ᙉᗘf'c (NN/mm2)

ᙎᛶಀᩘEc (N/mm2)

42.9
4
4
43.8
4
41.9
4
44.5
4
44.0
4
42.7
4
42.1

25,57025,12027,21029,15027,41029,10024,310CASE-00
CASE-1
1
CASE-22
CASE-33
CASE-44
CASE-55CASE-66⾲㸰 3& 㗰ᮦࡢᮦᩱᩱㅖඖ㝆అᙉᗘ
ᗘıpy (N/mmm2)ᘬᙇᙉᙉᗘıpu (N/mmm2)᩿㠃✚
Ap (mmm2)

1,435

1,653
338.4
48

1,580

1,853
398.7
71

SWPD1L7mm
SWPR7BLL
12.7mmࡋࡓࢥࣥࢡ࣮ࣜࢺ࠾ࡼࡧ3&㗰ᮦࡢᮦᩱㅖඖࢆ ⾲㸯㸪ࡍࠋ㕲➽ࡣ඲
඲࡚6'㸦'㸧࡛࠶ࡿࡿࡀᘬ⾲㸰࡟♧ࡍᙇヨ㦂࡟࠾࠾ࡅࡿ㝆అᛂ
ᛂຊࡣ1PP┦ᙜ࡛࠶ࡿࡿࠋ㸱㸬⭉㣗ಁಁ㐍ᐇ㦂ᐇ㦂᪉᪉ἲ
&$6(࡟ᑐࡋࡋ࡚ᐇ᪋ࡋࡓࡓ㟁㣗ἲ࡟ࡼࡼࡿ⭉㣗ಁ㐍ᐇ㦂㦂ࡢᴫせࢆᅗᅗ㸱࡟♧ࡍࠋ౪ヨయࢆ㉁㉁㔞⃰ᅗ㸰 ྛࢣ࣮ࢫࡢᦆྛ
ᦆയ⟠ᡤ࡜㍕Ⲵ᪉ἲᗘ㸣ࡢ1DFFO⁐ᾮෆ࡟ᾐᾐࡋࡓ࠺࠼࡛࡛㸪ࢳࢱ࣓࣓ࣥࢵࢩࣗࢆ㝜ᴟ࡜࡜ࡋ࡚౪ヨయయᗏ㠃࠾ࡼࡧࡧഃ㠃࡟㓄⨨⨨ࡋ㸪⭉㣗ᑐ㇟࡛
࡛࠶ࡿ3&㗰ᮦᮦࢆ㝧ᴟ࡜ࡋࡋ࡚┤ὶᏳᐃᐃ໬㟁※ࢆ⏝࠸࡚
࡚㏻㟁ࢆ⾜ࡗࡗࡓࠋࡇࡇ࡛࡛㸪&$6( ࠾ࡼࡧ&$6(ࡣྠ୍ࡢ⭉⭉㣗⟠ᡤ࠾ࡼࡼࡧ㍕Ⲵ᮲௳௳࡟࠾࠸࡚␗࡞ࡿࡿ⭉㣗ᦆയᗘᗘ࡜ࡍࡿࡓࡵࡵ㸪┠ᶆ࡜ࡍࡍࡿ⭉ᅗ㸱㸱 ⭉㣗ಁ㐍㐍ヨ㦂ᴫせ

㣗ᗘࢆ㉁㔞
㔞ῶᑡ⋡࡛㸣⛬ᗘ࡜㸣⛬ᗘࢆ┠┠Ᏻ࡜ࡋ࡚タタᐃࡋࡓࠋࡲࡓ㸪ୖグࡢࡢྛࢣ࣮ࢫ࡟࡟ᑐࡍࡿ⭉㣗㣗ಁ㐍ᐇ㦂࡟࡟╔ᡭࡍࡿ๓๓࡟㸪ྠࡌ᩿᩿㠃ᵓ㐀ࢆᣢ ࡘ㛗ࡉPPPࡢᑠᆺ౪ヨヨయࢆ⏝࠸ࡓࡓணഛᐇ㦂ࢆࢆᐇ᪋ࡋ㸪ࡦࡦࡧ๭ࢀࡸ㗵㗵Ồ࡞࡝እほほࡢኚ≧࡜✚✚⟬㟁ὶ㔞࡜ ࡢ㛵ಀࢆ☜☜ㄆࡍࡿࡇ࡜࡛㸪ྛ౪ヨヨయ࡟࠾ࡅࡿ┠ᶆࡢ⭉㣗㣗㔞࡜࡞ࡿࡼࡼ࠺✚⟬㟁ὶὶ㔞ࢆ⟶⌮ࡋࡋࡓࠋ࡞࠾㸪 ᮏᐇ㦂࡛ࡣࡣ⭉㣗ᑐ㇟⠊⠊ᅖእࡢ3&㗰㗰ᮦ㸪㕲➽࠾࠾ࡼࡧࢥࣥࢡ࣮ࣜࢺ⾲㠃㠃࡟࢚࣏࢟ࢩࢩᶞ⬡ሬ⿦࡟࡟ࡼࡿ㜵㗵ฎฎ⌮ࢆ⾜࠺ࡇࡇ࡜࡛㸪ᑐ㇟㇟⟠ᡤࡢ3&㗰㗰ᮦࡳࢆᒁᡤᡤⓗ࡟⭉㣗ࡉࡏࡿࡶࡢ࡜ࡋࡓࠋ⤖ᯝᐇ㦂⤖෗┿㸯࡟
࡟&$6(ࡢ⭉⭉㣗ಁ㐍ヨ㦂㦂ᚋࡢࡦࡧ๭๭ࢀ≧ἣࢆ♧♧ࡍࠋᱱᗏ㠃㠃࠾ࡼࡧᱱഃഃ㠃࡟3&㗰ᮦᮦ࡟ἢࡗࡓࡦࡦࡧ๭ࢀࡀ⏕⏕ࡌ࡚࠾ࡾ㸪ᱱᗏ㠃ࡢ᭱᭱኱ࡦࡧ๭ࢀࢀᖜࡣPPP⛬ᗘ࡛࠶ࡿࠋ࠸ࡎࢀࡢࡢ౪ヨయ࡟࠾࠾࠸࡚ࡶ㸪ྠྠᵝ࡟3&㗰ᮦᮦ࡟ἢࡗࡓỈỈᖹ᪉ྥࡢࡦࡧ๭ࢀࡀ⏕ ࡌࡿ⤖ᯝ࡜࡞࡞ࡗࡓࠋ෗┿㸰࡟
࡟&$6(ࡢ33&㗰ᮦࡢ⭉㣗㣗≧ἣ࡜ࡋ࡚࡚㸪᭤ࡆ㍕ⲴⲴᐇ㦂ᚋ࡟ෆෆ㒊ࡢ㗰ᮦࢆࢆࣁࢶࣜฟࡋࡋࡓ≧ἣࢆ♧♧ࡍࠋࡲࡓ㸪෗┿㸱࡟&&$6(㸪㸪ࡢᐇ㦂ᚋࡢ
ࡢ3&㗰ᮦࡢ≧≧ἣࢆ♧ࡍࠋ෗┿㸱ࡣࡣ㸪࠸ࡎࢀࡶ᭤ࡆ㍕Ⲵᐇᐇヨయ࠿ࡽᢳฟฟࡋࡓࡶࡢ࡛࡛࠶ࡾ㸪ࢡ࢚࢚ࣥ㓟Ỉ⣲஧஧࢔ࣥࣔࢽ࣒࢘㸣⁐ᾮᾮ࡟ᾐₕࡋ࡚࡚㝖㗵ࡋࡓᚋᚋ㦂ᚋ࡟౪ヨࡢ≧ἣ࡛࠶࠶ࡿࠋ෗┿ࡢࡢྑഃ࡟♧ࡍࡍグྕࡢ࠺ࡕࡕ㸪㹙㹌㹛ࡣࡣ◚᩿ࡀ⏕ࡌࡌ࡞࠿ࡗࡓ㗰㗰⥺㸪㹙㹄㹛ࡣ᭤ࡆ㍕ⲴⲴᐇ㦂࡟ࡼࡗࡗ࡚◚᩿ࡋࡓࡓ࡜⪃࠼ࡽࢀࢀࡿ㗰⥺㸪㹙㹙㹁㹛ࡣ⭉㣗㣗ಁ㐍ᐇ㦂࡟࡟ࡼࡗ࡚◚᩿᩿ࡋࡓ࡜⪃࠼࠼ࡽࢀࡿ㗰⥺⥺ࢆ♧ࡋ࡚࠾࠾ࡾ㸪㹙㹄㹛࡜㹙㹁㹛ࡢࡢ༊ู࡟ࡘ࠸࠸࡚ࡣ㸪◚᩿᩿㠃ࡢⓎ㗵≧≧ἣ࠾ࡼࡧ㍕㍕Ⲵ୰ࡢ◚᩿᩿㡢Ⓨ⏕ᅇᩘᩘ࠿ࡽ᥎ᐃࡋࡋࡓ⤖ᯝ࡛࠶࠶ࡿࠋ࠸ࡎࢀࢀࡢ౪ヨయ࡟࡟࠾࠸࡚ࡶ㸪3&㗰ᮦࡢ⭉⭉㣗⠊ᅖࡣFP⛬ᗘ௨ෆෆ࡟཰ࡲࡗ࡚࡚࠾ࡾ㸪㸵ᮏᮏࡼࡾ⥺ࡢ࠺ࡕ୰ኸ࡟㓄⨨ࡉࢀࡓ3&㗰㗰⥺ࡣ㸪࡯࡜ࢇ࡝⭉㣗ࡀࡀ⏕ࡌ࡚࠸࡞࡞࠸≧ែ࡛࠶࠶ࡗࡓࠋউঞ५ॺঞ५ॺ॥থॡজ‫৾ੵॺش‬ভ‫ؙ‬ਸ਼їћ৚३থএ४क़঒૛ધૐ‫ق‬їѕіќফіѕা‫ك‬㸺ᱱᱱഃ㠃㸼㸺ᱱᗏ㠃㠃㸼෗┿㸯 ࡦࡧ๭ࢀ≧ἣࡦ
ἣ &$6(〔論文〕㸺᭤ࡆࡆ㍕Ⲵᐇ㦂ᚋ㸼㸼෗┿┿㸰 㗰ᮦᮦࡢ⭉㣗≧ἣ㸦&$6(㸧㹙F㹛㹛㹙CC㹛
㹙CC㹛

㹙F㹛
㹛
㹙F㹛
㹛
㹙F㹛
㹛
㹙F㹛
㹛㹙F㹛
㹛
㹙N㹛

㹙F㹛㹛㹙F㹛㹛㹙F㹛
㹛

㹙CC㹛㹙CC㹛㹙CC㹛㸺
㸺&$6(㸼෗┿㸱㹙FF㹛㹙C㹛㹛㹙F㹛㹛㹙N㹛㹛

㹙FF㹛

㹙N㹛
㹛

㸺&$6(㸼ᐇ㦂ᚋࡢ 3& 㗰ᮦ⭉㣗࡟క
క࠺3&㗰ᮦࡢ
ࡢ㉁㔞ῶᑡ⋡⋡ࢆᅗ㸲࡟♧♧ࡍࠋ

㸺&$6(㸼

30.0%

ࡇࡇ࡛㸪㉁
㉁㔞ῶᑡ⋡ࡣ
ࡣᐇ㦂ᚋࡢ౪
౪ヨయ࠿ࡽྲྀ
ྲྀࡾฟ

26.2%

25.0%

20.9%

188.5%

18.99%

኱ࡁࡃ␗࡞࡞ࡗ࡚࠸ࡿࠋ

ASE-1
CA

CASE
E-2

㸲㸬᭤ࡆ㍕
㍕Ⲵᐇ㦂⤖ᯝᯝᅗ㸲ᅗ
3& 㗰㗰ᮦࡢ㉁㔞ῶᑡ⋡ࡋ࡚㝖㗵ࡋࡋࡓ㛗ࡉPPPࡢ3&㗰ࡼࡾ⥺ࡢ㉁㔞࡜
࡜⭉㣗

20.0%

๓ࡢ㉁㔞ࡼࡼࡾ⟬ᐃࡋࡓࡓ್࡛࠶ࡿࠋ &$6( ࡀ⣙

15.0%㸣๓ᚋ࡟
࡟ᑐࡋ࡚&$6(ࡢࡳ㸣࡛࠶ࡾ㸪 ㉁㔞

10.0%

ῶᑡ⋡ࡢᕪᕪࡣഹ࠿㸣 ⛬ᗘ࡛࠶ࡿࡀ㸪෗┿㸱
㸱࡛☜

5.0%

ㄆ࡛ࡁࡿࡼࡼ࠺࡟㸪3&㗰㗰ᮦࡢ⭉㣗࡟࡟ࡼࡿ◚᩿≧
≧ἣࡣ

0.0%

⭉㣗ᦆᦆയᗘࡀ⪏ⲴⲴᛶ⬟࡟୚࠼ࡿᙳ㡪

CASE-33

CASE-4ᅗ㸳࡟&&$6(ࡢ᭤ࡆ㍕㍕Ⲵᐇ㦂⤖ᯝᯝ࡜ࡋ࡚㸪ᨭ㛫୰୰ኸࡢ᭤ࡆ࣮࣓ࣔࣔࣥࢺ㹼㹼㖄┤ኚ఩㛵㛵ಀࢆ♧ࡍࠋ&$6((࡜&$$6(ࡣࢫࢫࣃࣥࡀ␗࡞࡞ࡿࡢ࡛ኚᙧᛶ⬟⬟ࡣẚ㍑࡛ࡁ
ࡁ࡞࠸ࡀ㸪ᱱᱱࡢ᢬ᢠ࣮࣮࣓ࣔࣥ
ࢺࢆẚ㍑ࡍ
ࡍࡿୖ࡛⦪㍈㍈ࢆᨭ㛫୰ኸኸࡢ᭱኱࣮ࣔ
࣮࣓ࣥࢺ࡜ࡋࡓྠྠ୍ࢢࣛࣇ࡟࡟♧ࡋࡓࡶࡢࡢ࡛࠶ࡿࠋࡲ
ࡲࡓ㸪
ࢢࣛࣇୖࡢ
ࡢࠕ೺඲ࠖࡣ
ࡣ᩿㠃ィ⟬࡛
࡛ᚓࡽࢀࡓ&&$6(ࡢ◚ቯ᢬ᢠᢠ᭤ࡆ࣮࣓ࣔࣥࢺ㸪ࠕᮏᮏ◚᩿ࠖࡣ 㸵ᮏࡼࡾ⥺ࡢ௦ࢃࢃࡾ࡟⣲⥺㸯㸯ᮏ┦ᙜࡢ᩿᩿㠃✚ࢆ⏝࠸࠸࡚ィ⟬ࡋࡓ◚ቯቯ᢬ᢠ᭤ࡆ࣮࣓ࣔࣥࢺࡢ್࡛࠶ࡿࠋ
&$6(࡟ࡘ࠸࠸࡚ࡣ㸪㍕ⲴⲴ࡟ᚑ࠸㗰ᮦᮦࡢ◚ᨭ㛫୰ኸ᭤䛢䝰䞊䝯䞁䝖(kN.m)

35೺඲
㻢ᮏ◚᩿
CASE0
CASE1
CASE2
CASE3
CASE4

30
25201510500

110203040୰ኸ㖄┤ኚ఩(mmm)ᨭ㛫୰

500ᅗ㸳 ᭤ࡆ㍕Ⲵᐇ㦂᭤㦂⤖ᯝ &$6(᩿࡜క࡟⪏⪏Ⲵຊࡢపୗୗࢆ⧞ࡾ㏉ࡋࡋ㸪᭱⤊ⓗ࡟࡟ࢥࣥࢡ࣮࣮ࣜࢺࡢᅽቯ࡟࡟⮳ࡿ⤖ᯝ࡜ ࡞ࡗࡓࠋ&$$6(ࡣ࡯࡯ࡰྠ➼ࡢ㉁㉁㔞ῶᑡ㔞࡛࡛࠶ࡿࡀ㸪㗰㗰ᮦ◚᩿ࡢࢱࢱ࢖࣑ࣥࢢࡣࡣ኱ࡁࡃ␗࡞࡞ࡿࠋࡇࢀࡣࡣ㸪ྛ⣲⥺ẖẖ࡛⪃࠼ࡓሙሙྜ࡟⭉㣗ᦆᦆയ࡟క࠸⏕⏕ࡌࡿᛂຊ㞟㞟୰ࡢⓎ⏕ᗘᗘྜࡀ␗࡞ࡿࡿࡓࡵ࡜⪃࠼࠼ࡽࢀࡿࠋ&$$6(ࡣ⣲⣲⥺ࡢ◚᩿ࢆࢆ⧞ࡾ㏉ࡋࡓࡓᚋ㸪᭱⤊ⓗⓗ࡟ᮏࡼࡾ⥺⥺ࡢ࠺ࡕᮏ ࡀ◚᩿ࡋ࡚୰ኸ࡟㓄⨨ࡉࢀࡓ⣲⥺ᮏ࡜୺㕲➽➽ࡢࡳࡢ⪏ⲴⲴᶵᵓ࡜࡞ࡗࡗ࡚࠾ࡾ㸪&$$6(ࡀ&$6(ࡼࡾࡶᑠ ࡉ࠸ࡢࡣ୺㕲㕲➽ࡶ◚᩿ࡋࡋࡓࡓࡵ࡛࠶
࠶ࡿࠋ
&$6(ࡣࡣ㍕Ⲵ๓࡟3&&㗰ᮦࡢ኱༙༙ࡀ◚᩿ࡋ࡚࡚࠸ࡿࡓࡵ㸪&$6(࡟ẚẚ࡭࡚ࡦࡧ๭๭ࢀⓎ⏕࣮࣮࣓ࣔࣥࢺࡢపపୗ࡜㸪ࡦࡧࡧ๭ࢀᚋࡢ㕲㕲➽࠾ࡼࡧ3&&㗰ᮦࡢ㝆అఅ࡟క࠺๛ᛶᛶపୗࡀ㢧ⴭⴭ࡟⌧ࢀ࡚࠸࠸ࡿࠋᐇ㦂⤊⤊஢᫬ࡢ᢬ᢠᢠউঞ५ॺঞ५ॺ॥থॡজ‫৾ੵॺش‬ভ‫ؙ‬ਸ਼їћ৚३থএ४क़঒૛ધૐ‫ق‬їѕіќফіѕা‫ك‬〔論文〕40ࡿࡀࠕᮏ◚᩿ࠖࡢィ⟬್࡜ྠ➼㸪&$6(ࡣᮏࡢ3&㗰ᮦ35ࡀ◚᩿ࡋ࡚࠸ࡿࡀࠕᮏ◚᩿ࠖࡼࡾ㸣⛬ᗘ኱ࡁ࡞್ࢆ♧ࡋ࡚࠸ࡿࠋࡇࢀࡣ㸪&$6(ࡢ⭉㣗ᦆയಶᡤࡀᨭ㛫୰ኸ࠿ࡽ㞳ࢀ࡚࠾ࡾ㸪ᨭ㛫୰ኸ㒊ࡢ᩿㠃࡟࠾࠸࡚ࡣ◚᩿ࡋࡓ
3&㗰ᮦࡢ௜╔ࡀᅇ᚟ࡋ࡚ᘬᙇ᢬ᢠᮦ࡜ࡋ࡚࠶ࡿ⛬ᗘᶵ⬟ࡋ࡚࠸ࡿࡓࡵ࡜⪃࠼ࡽࢀࡿࠋࢢࣛ࢘ࢺᮍ඘ሸ࠾ࡼࡧ෌ὀධࡢᙳ㡪
&$6(ࡢ᭤ࡆ㍕Ⲵᐇ㦂⤖ᯝ࡜ࡋ࡚㸪ᅗ㸴࡟ᨭ㛫୰ኸᨭ㛫୰ኸ᭤䛢䝰䞊䝯䞁䝖(kN.m)࣮࣓ࣔࣥࢺࡣ㸪&$6(࡛ࡣᮏ඲࡚ࡢ3&㗰ᮦࡀ◚᩿ࡋ࡚࠸

30
25
20
15
10500ࡢ᭤ࡆ࣮࣓ࣔࣥࢺ㹼㖄┤ኚ఩㛵ಀࢆ♧ࡍࠋࡇࡇ࡛㸪ࢢࣛࣇୖࡢࠕ೺඲ࠖ࠾ࡼࡧࠕษ᩿ࠖࡣ㐣ཤ࡟ᐇ᪋ࡋࡓᐇ㦂⤖

CASE5CASE6
೺඲
ษ᩿
10

20
3040ᨭ㛫୰ኸ㖄┤ኚ఩(mm)60ᅗ㸴 ᭤ࡆ㍕Ⲵᐇ㦂⤖ᯝ &$6(ᯝ ࡛࠶ࡾ㸪ࠕ೺඲ࠖࡣ&$6(࡜ྠࡌ౪ヨయ࡛ࢢࣛ࢘ࢺ㸪

100%㗰ᮦ࡜ࡶ࡟೺඲࡞≧ែ㸪ࠕษ᩿ࠖࡣ೺඲࡞≧ែ࡟ᑐࡋ࡚
80%&$6(࡜ྠ఩⨨ࡢ3&㗰ᮦࢆษ᩿ࡋࡓ≧ែࢆ♧ࡋ࡚࠸ࡿࠋ 60%40%ᅗ㸵ࡣᅗ㸴࡟♧ࡋࡓ⤖ᯝࡢ࠺ࡕ᭱኱࣮࣓ࣔࣥࢺ࡟╔┠20%0%ࡋ㸪೺඲࡞≧ែࢆ㸣࡜ࡋ࡚♧ࡋࡓ⤖ᯝ࡛࠶ࡿࠋ3&㗰ᮦࡢษ᩿ࡔࡅ࡛ࡣ㸣⛬ᗘࡢ⪏Ⲵຊࢆಖᣢࡋ࡚࠸ࡓࡀ㸪ࢢ

50

100%89%

೺඲ษ᩿

68%
50%

CASE-5CASE-6ᅗ㸵 ᭱኱࣮࣓ࣔࣥࢺࡢẚ⋡ࣛ࢘ࢺᮍ඘ሸ༊㛫࡛ษ᩿ࡋࡓ&$6(ࡣᨭ㛫୰ኸ㒊ࡲ࡛ษ᩿ࡢᙳ㡪ࡀ⏕ࡌࡿࡓࡵ㸪㸣࡟పୗࡋࡓࠋ୍᪉࡛㸪ࢢࣛ࢘ࢺ෌ὀධࡋࡓ&$6(࡟ࡘ࠸࡚ࡣษ᩿ࡋࡓ㗰ᮦࡶᘬᙇ᢬ᢠᮦ࡜ࡋ࡚ᶵ⬟ࡍࡿࡓࡵ㸣ࡲ࡛ᅇ᚟ࡍࡿ⤖ᯝ࡜࡞ࡗࡓࠋ㸳ࡲ࡜ࡵᮏᐇ㦂ⓗ◊✲࠿ࡽᚓࡽࢀࡓ⤖ㄽࢆ௨ୗ࡟♧ࡍࠋ ⭉㣗⠊ᅖPP࠶ࡓࡾࡢ㉁㔞ῶᑡ⋡࡟╔┠ࡋࡓሙྜ㸪ᮏᐇ㦂࡛ࡣࢃࡎ࠿⛬ᗘࡢᕪ࡛⭉㣗࡟ࡼࡿ3&㗰ᮦ◚᩿≧ἣࡀ኱ࡁࡃ␗࡞ࡾ㸪㉁㔞ῶᑡ⋡㹼㸣⛬ᗘࢆቃ࡜ࡋ࡚◚᩿ࡀ⏕ࡌ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋ ⭉㣗ࡋࡓ3&㗰ᮦࢆ᭷ࡍࡿ3&ᱱࡣ㸪ྠ➼ࡢ㉁㔞ῶᑡ⋡࡛࠶ࡗ࡚ࡶ3&㗰ᮦࡢ◚᩿Ⲵ㔜࡟ࣂࣛࡘࡁࡀ⏕ࡌࡿࠋࡇࢀࡣ㸪3&㗰ࡼࡾ⥺ࡢ⣲⥺༢఩࡛⭉㣗ᗘྜࡀ␗࡞ࡿࡓࡵ࡜⪃࠼ࡽ࠼ࡿࠋ
 ㉁㔞ῶᑡ⋡㸣ࡢ౪ヨయ&$6(࡛ࡣ㸪௚ࡢࢣ࣮ࢫ࡟ẚ࡭࡚⭉㣗࡟ࡼࡿ3&㗰ᮦ◚᩿ࡢᙳ㡪ࡀ኱ࡁࡃ㸪ࡦࡧ๭ࢀⓎ⏕࣮࣓ࣔࣥࢺࡢపୗ㸪㕲➽࠾ࡼࡧ3&㗰ᮦࡢ㝆అ࡟క࠺๛ᛶపୗࡀ㢧ⴭ࡜࡞ࡗࡓࠋ
 3&㗰ᮦࡢ⭉㣗ᦆയ⟠ᡤࡀᨭⅬᐤࡾ࡟࡞ࡗࡓሙྜࡣ㸪◚ቯ᢬ᢠ᭤ࡆ࣮࣓ࣔࣥࢺࡢపୗࡀᑠࡉࡃ࡞ࡗࡓࠋ
ࡇࢀࡣ㸪◚᩿ࡋࡓ3&㗰ᮦࡶᨭ㛫୰ኸ࡛ࡣ௜╔ࢆᅇ᚟ࡋ㸪ᘬᙇ᢬ᢠᮦ࡜ࡋ࡚ᶵ⬟ࡍࡿࡓࡵ࡛࠶ࡿࠋ ࢢࣛ࢘ࢺ෌ὀධ࡟ࡼࡾ⪏Ⲵຊࡀ࠶ࡿ⛬ᗘᅇ᚟ࡍࡿຠᯝࡀ࠶ࡿ஦ࢆ☜ㄆࡋࡓࠋᮏᐇ㦂࡛ࡢ෌ὀධࢢࣛ
࢘ࢺࡢ඘ሸᗘࡣᮍ☜ㄆ࡛࠶ࡾ㸪⭉㣗ࢆక࠺㗰ᮦ࡟ᑐࡋ࡚ࡢຠᯝ࡟ࡘ࠸࡚ࡶ᭦࡞ࡿ᳨ウࡀᚲせ࡛࠶ࡿࠋ
ㅰ㎡ᮏ◊✲ࡣ⛉Ꮫ◊✲㈝⿵ຓ㔠㸦ᇶ┙㸦%㸧௦⾲㸸╬ዲᏹྐ㸧࡟ࡼࡾ⾜ࡗࡓࡶࡢ࡛࠶ࡿࠋᮏᐇ㦂࡟㝿ࡋ࡚ࡣ㸪3&㗰ᮦࢆ⚄㗰⥺ᕤᴗ㸦ᰴ㸧㸪ࢩ࣮ࣙ࣎ࣥࢻᘓタ㸦ᰴ㸧࠿ࡽᮦᩱࢆࡈᥦ౪㡬࠸ࡓࠋࡲࡓ㸪ᇸ⋢኱Ꮫ༞ㄽ⏕ࡢᮏ⏣⨾ᶞẶ㸪▼⏣ᝅኈẶ㸪ಟㄽ⏕ࡢᚨ⏣⿱⨾Ặ㸪ሷ㔝ㄔẶ㸪1JX\HQ7KL0DLẶ㸪.KLHX+DL+RDQJẶ࡟ࡣከ኱࡞༠ຊࢆ㡬࠸ࡓࠋࡇࡇ࡟グࡋ࡚ᚚ♩⏦ࡋୖࡆࡿḟ➨࡛࠶ࡿࠋཧ⪃ᩥ⊩ ౛࠼ࡤ㸪⏣୰Ὀྖ㸸ሷᐖຎ໬ᶫᱱࡢᛶ⬟ホ౯㸪ࢥࣥࢡ࣮ࣜࢺᕤᏛ9RO1R㸪33㹼33㸪 ᶓ⏣ᩄᗈ㸪,VXUX:,-$<$:$5$'$1(㸪╬ዲᏹྐ㸸◚᩿ࡋࡓ3&㗰ᮦࢆ᭷ࡍࡿ3&ᱱࡢຊᏛⓗᛶ≧㸪➨ᅇࣉࣞࢫࢺࣞࢫࢺࢥࣥࢡ࣮ࣜࢺࡢⓎᒎ࡟㛵ࡍࡿࢩ࣏ࣥࢪ࣒࢘ㄽᩥ㞟33㸪