Development of Earthquake-Resistant Ceiling Structure by Lightweight Square Steel

㍍㔞ゅᙧ㗰࡟ࡼࡿ⪏㟈ኳ஭ᵓ㐀ࡢ㛤Ⓨ

Development of Earthquake-Resistant Ceiling Structure by Lightweight Square Steel

◊✲௦⾲⪅ ᕤᏛ㒊ᘓ⠏Ꮫ⛉^*1 ෸ᩍᤵ ᯇᮏ ៅஓ Shinya Matsumoto ඹྠ◊✲⪅ ᰴᘧ఍♫బ⸨ᆺ㗰〇సᡤ^*2 ௦⾲ྲྀ⥾ᙺ బ⸨ බ❶ Masafumi Sato ᗈᓥ኱Ꮫྡ㄃ᩍᤵ^*3 ⸨㇂ ⩏ಙ Yoshinobu Fujitani The Great East Japan Earthquake occurred on March 11, 2011, it has been reported that many dropped out damage for nonstructural components (ceiling) in a buildings. The fall of ceiling materials is high risk for human damage especially. Large space structures or public gymnasium, etc. must be a safe place, because of it will be used a shelter in a disaster.

Therefore, it is important to grasp the seismic performance for nonstructural components such as ceiling. In this study, the basic characteristics of seismic performance for suspended ceiling structure are investigated. In this study, the suspended ceiling structure with improved seismic resistance (earthquake-resistant ceiling structures) using a lightweight steel pipe with caulking is proposed. In this paper, the results of vertical and horizontal loading test are shown, and the mechanical properties of suspended ceiling structure are verified.

Keywords: Ceiling structures, Lightweight square steels, Caulking

㸬ࡣࡌࡵ࡟

2011ᖺ3᭶11᪥࡟Ⓨ⏕ࡋࡓᮾ᪥ᮏ኱㟈⅏࡛ࡣ㸪኱つ ᶍ✵㛫ࢆ᭷ࡍࡿᘓ⠏≀࡟࠾ࡅࡿ㠀ᵓ㐀㒊ᮦ㸦ኳ஭㸧ࡢ⬺

ⴠ⿕ᐖࡀሗ࿌ࡉࢀࡓ⁽¹⁾㸬≉࡟ኳ஭ᮦࡢⴠୗࡣேⓗ⿕ᐖࡢ༴

㝤ᛶࡀ㧗ࡃ㸪య⫱㤋ࡸබඹࡢ኱✵㛫ᵓ㐀≀ࡣᆅ㟈᫬➼࡟

㑊㞴ሙᡤ࡜࡞ࡿ࡜ࡇࢁ࡛࠶ࡾᏳ඲࡞ሙᡤ࡛࡞ࡃ࡚ࡣ࡞ࡽ

࡞࠸㸬ࡑࡢࡓࡵ㸪⪏㟈ᛶ⬟ࢆ༑ศ࡟ᢕᥱࡍࡿࡇ࡜ࡀ㔜せ

࡛࠶ࡿ^(2)-(4)㸬

ᮏ◊✲࡛ࡣࡇࢀࡲ࡛࡟ྞࡾኳ஭ᵓ㐀ࡢ⪏㟈ᛶ⬟࡟㛵ࡍ

ࡿᇶ♏ⓗ≉ᛶࢆㄪᰝࡍࡿ࡜࡜ࡶ࡟⁽⁵⁾㸪࠿ࡋࡵຍᕤ࡟ࡼࡗ࡚

ᡂᙧࡉࢀࡓ㍍㔞ᙧ㗰⟶ࢆ⏝࠸࡚⪏㟈ᛶࢆྥୖࡉࡏࡓ᪂ᆺ ࡢ኱ᆺྞࡾኳ஭ᵓ㐀㸦㍍㔞⪏㟈ᵓ㐀ᆺࡪ࡝࠺Ჴ㸧ࢆᥦ᱌

ࡋ࡚࠸ࡿ⁽⁶⁾㸬ᮏሗ࿌࡛ࡣ㸪ࡇࢀࡽࡢ◊✲࡟࠾࠸࡚㒊ᮦࡢヲ

⣽࡞ຊᏛⓗ≉ᛶࢆ᳨ウࢆࡍࡿࡓࡵ࡟ᚲせ࡜࡞ࡿᡂᙧᚋࡢ 㗰ᮦࡢᘬᙇᮦᩱヨ㦂࠾ࡼࡧ㸪ゅᙧ㗰⟶ࡢᅽ⦰ヨ㦂ࡢ⤖ᯝ

࡟ࡘ࠸࡚ሗ࿌ࡍࡿ㸬ࡑࡋ࡚㸪㒊ᮦࢆ᥋ྜࡍࡿ㝿ࡢ᥋ྜ㔠

≀ࡢ≉ᛶࢆᐇ㦂࡟ࡼࡾㄪᰝࡋ㸪᥋ྜ㒊ࡢࢹ࢕ࢸ࣮ࣝࢆᨵ Ⰻࡍࡿࡇ࡜࡛㸪ࡼࡾ㧗࠸⪏㟈ᛶࡢ㍍㔞⪏㟈ኳ஭ࢆᥦ᱌ࡍ

ࡿ㸬

㸬ᮦᩱᘬᙇヨ㦂

ᮏ◊✲࡛ࡣ㸪ゅᙧ㗰⟶ࡢࢥ࣮ࢼ࣮㒊࡟࠾࠸࡚࠿ࡋࡵᡂ ᙧ࡟ࡼࡾᔐྜࡋࡓゅᙧ㗰⟶ࢆ⏝࠸ࡿ㸬ࡇࡢ࠿ࡋࡵᡂᙧゅ ᙧ㗰⟶ࡣᅗ1࡟♧ࡍࡼ࠺࡞᩿㠃ᙧ≧࡛࠶ࡾ㸪࣮࣎ࢻ㢮࡞

࡝ࡢ㠃ᮦࢆࢫࢡ࣮ࣜࣗࢿࢪ࡟ࡼࡾࣅࢫṆࡵࡍࡿ㝿࡟㸪ࢫ ࢡ࣮ࣜࣗࢿࢪඛ➃ࡢࣈࣞࢆపῶࡋ㸪సᴗᛶࢆୖࡆࡿࡓࡵ

࡟㸪஧ഃ㠃࡟ࣅ࣮ࢻຍᕤ㠃ࢆ᭷ࡋ࡚࠸ࡿ㸬

ᅗ1. ࠿ࡋࡵᡂᙧゅᙧ㗰⟶ࡢ᩿㠃ᙧ≧

㗰ᮦࡣJIS G3302࡟㐺ྜࡍࡿ⁐⼥ள㖄ࡵࡗࡁ㗰㕏

(SGCC-Z12)࡛࠶ࡿ㸬㗰ᮦࡢᘬᙇヨ㦂ࡣᡂᙧ๓ࡢࢥ࢖ࣝࡼ

ࡾษࡾฟࡋ࡚〇సࡋࡓヨ㦂య1㸪෭㛫ຍᕤᡂᙧᚋࡢ㒊ᮦ

ࡢࣇࣛࢵࢺ㠃ࡼࡾษࡾฟࡋ࡚〇సࡋࡓヨ㦂య2㸪෭㛫ຍ ᕤᡂᙧᚋࡢ㒊ᮦࡢࣅ࣮ࢻ㠃ࡼࡾษࡾฟࡋ࡚〇సࡋࡓヨ㦂 య3ࡢ3✀㢮࡜ࡋ㸪ࡑࢀࡒࢀྠ୍✀㢮࡟ᑐࡋ3యࡎࡘヨ 㦂∦ࢆษࡾฟࡋ㸪JISࡢ㔠ᒓᮦᩱᘬᙇヨ㦂᪉ἲ(JIS Z

*ཎ✏ཷ௜ 2014ᖺ5᭶12᪥

*¹ ࠛ739-2116 ᮾᗈᓥᕷ㧗ᒇ࠺ࡵࡢ㎶1␒ E-Mail [email protected]

*² ࠛ733-0802 ᗈᓥᕷす༊୕ᮏ⏫2-24-24

ࣅ࣮ࢻ㠃

ࣇࣛࢵࢺ㠃

ࣅ࣮ࢻ㠃 ࠿ࡋࡵ㒊ศ㸦ࢥ࣮ࢼ࣮㸧

ࣇࣛࢵࢺ㠃

近畿大学次世代基盤技術研究所報告 Vol. 5（2014）73－78

22 1ཧ ᯈᮦ

ヨ㦂

࡟グ

ࢀ

ヨ ᘬᙇ

ᘬᙇ

ᘬᙇ

(m 1

ᅗ ኚ఩

య ࡍ

41)࡟ᇶ࡙ࡃᘬ ཧ↷㸧㸬ヨ㦂య

ᮦᩱ࡟౑⏝ࡉ 㦂࡟⏝࠸ࡓ㗰 グ㍕ࡉࢀ࡚࠸

ࡶJISつ᱁ࢆ

ヨ㦂యྡ

ᙇヨ㦂య1 ᡂ

ᙇヨ㦂య2 ෭ ࡋ ᙇヨ㦂య3 ෭

࡚

ᅗ2

⾲2.

ࢥ࢖ࣝᑍἲ mm×mm×mm)

.2×1219×844

ᅗ3㹼ᅗ5࡟

఩㛵ಀࢆ♧ࡍ 2-1㸪ヨ㦂య3

ࡿ㸬

ᘬᙇヨ㦂ࢆᐇ యࡢᯈཌࡣ1.2 ࡉࢀࡿ5ྕヨ㦂 㗰ᮦࢥ࢖ࣝࡢᮦ

࠸ࡿ໬Ꮫᡂศࡢ

ࢆ㐺ྜࡋ࡚࠸ࡿ

⾲1. ᘬᙇヨ ヨ ᡂᙧ๓ࡢࢥ࢖ࣝ

෭㛫ຍᕤᡂᙧᚋ ࡋ࡚〇సࡋࡓヨ ෭㛫ຍᕤᡂᙧᚋ

࡚〇సࡋࡓヨ㦂

2. ᘬᙇヨ㦂∦

ᮦᩱ᳨ᰝド᫂

㉁㔞

(kg) C

×10^-3 9670 59

࡟ᘬᙇヨ㦂య1 ࡍ㸬ࡲࡓ㸪ᅗ6 3-1࡟ᑐࡍࡿᛂ

ᐇ᪋ࡋ㸪≉ᛶࢆ

2mm࡛࠶ࡾ㸪

㦂∦࡟ࡼࡾᘬ

ᮦᩱ᳨ᰝド᫂᭩

ࡢ≉ᛶ್ࢆ⾲

ࡿ㸬 ヨ㦂య୍ぴ ヨ㦂యࡢ〇స᪉

ࣝࡼࡾษࡾฟࡋ ᚋࡢ㒊ᮦࡢࣇࣛ

ヨ㦂య ᚋࡢ㒊ᮦࡢࣅ࣮

㦂య

∦㸦5ྕヨ㦂∦

᫂᭩㸦࣑ࣝࢩ࣮

໬Ꮫᡂศ Si

×10^-2 Mn

×10 2.5 19

1࠿ࡽᘬᙇヨ㦂

࡟ᘬᙇヨ㦂య ᛂຊᗘ㸫ࡦࡎ

ࢆẚ㍑ࡋࡓ㸦⾲

㸪ᅗ2࡟♧ࡍ ᘬᙇヨ㦂ࢆ⾜ࡗ

᭩㸦࣑ࣝࢩ࣮

2࡟♧ࡍ㸬࠸

᪉ἲ

࡚〇సࡋࡓヨ㦂

ࢵࢺ㠃ࡼࡾษࡾ

࣮ࢻ㠃ࡼࡾษࡾฟ

∦㸧

࣮ࢺ㸧

ศ(%) n 0^-2

P

×10^-3 ×

9 10

㦂య3ࡢⲴ㔜 య1-1㸪ᘬᙇヨ ࡎࡳᗘ㛵ಀࢆẚ

⾲ ࡍⷧ

ࡗࡓ㸬 ࢺ㸧

࠸ࡎ

㦂య

ࡾฟ

ฟࡋ

S

×10^-3 8

㔜㸫 ヨ㦂 ẚ㍑

ᅗ3.

ᅗ4.

ᅗ5.

ᅗ

ᘬᙇヨ㦂య1

ᘬᙇヨ㦂య2

ᘬᙇヨ㦂య3

ᅗ6. ᛂຊᗘ㸫

1ࡢⲴ㔜㸫ኚ఩

2ࡢⲴ㔜㸫ኚ఩

3ࡢⲴ㔜㸫ኚ఩

㸫ࡦࡎࡳᗘ㛵ಀ

఩㛵ಀ

఩㛵ಀ

఩㛵ಀ

ಀ

⾲3࡟ᘬᙇヨ㦂⤖ᯝࡢ୍ぴࢆ♧ࡍ㸬ྛヨ㦂యࡢᘬᙇᙉ ࡉ㸦3ヨ㦂యࡢᖹᆒ್㸧ࡣ㸪ᘬᙇヨ㦂య1࡛ࡣ372N/mm²㸪 ᘬᙇヨ㦂య 2 ࡛ࡣ 397N/mm²㸪ᘬᙇヨ㦂య 3 ࡛ࡣ 414N/mm²࡛࠶ࡗࡓ㸬ᘬᙇᙉࡉࡣᡂᙧ๓ࡢࢥ࢖ࣝࡼࡾษ

ࡾฟࡋ࡚〇సࡋࡓᘬᙇヨ㦂య1ࡼࡾࡶ㸪෭㛫ຍᕤᡂᙧᚋ ࡢ㒊ᮦࡢࣇࣛࢵࢺ㠃ࡼࡾษࡾฟࡋ࡚〇సࡋࡓᘬᙇヨ㦂య 2㸪ࡉࡽ࡟෭㛫ຍᕤᡂᙧᚋࡢ㒊ᮦࡢࣅ࣮ࢻ㠃ࡼࡾษࡾฟࡋ

࡚〇సࡋࡓᘬᙇヨ㦂య3ࡢ㡰࡟኱ࡁࡃ࡞ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬

ࡲࡓ㸪㝆అᛂຊᗘࡣࡑࢀࡒࢀ㸪ᘬᙇヨ㦂య1ࡣ285N/mm²㸪 ᘬᙇヨ㦂య2ࡣ343N/mm²㸪ᘬᙇヨ㦂య3ࡣ385N/mm²

࡛ ࠶ ࡗ ࡓ 㸬 ࡲ ࡓ 㸪 ࣖ ࣥ ࢢ ಀ ᩘ ࡣ 1.69×10⁵㹼 1.82×10⁵N/mm²࡛࠶ࡾ㸪୍⯡ⓗ࡞㗰ᮦ(2.05×10⁵N/mm²)

࡟ẚ࡭1๭⛬ᗘᑠࡉ࠸ࡇ࡜ࡀ☜ㄆࡉࢀࡓ㸬◚᩿ఙࡧࡣᘬ ᙇヨ㦂య1࡛ࡣ34.0%㸪ᘬᙇヨ㦂య2࡛ࡣ32.8%㸪ᘬᙇ ヨ㦂య3࡛ࡣ26.6%࡛࠶ࡾ㸪ᘬᙇᙉࡉࡀ኱ࡁ࠸ヨ㦂య࡯

࡝◚᩿ఙࡧࡣᑠࡉࡃ࡞ࡿ࡜࠸࠺୍⯡ⓗ࡞㗰ᮦࡢ≉ᛶࡶ☜

ㄆࡉࢀࡓ㸬࣏࢔ࢯࣥẚࡣ 0.309㹼0.322 ࡛࠶ࡗࡓ㸬෗┿

1㹼෗┿3࡟ྛᘬᙇヨ㦂యࡢ◚᩿≧ἣࢆ♧ࡍ㸬

⾲3. ᘬᙇヨ㦂⤖ᯝ୍ぴ

෗┿1. ᘬᙇヨ㦂య1-1 ◚᩿≧ἣ

෗┿2. ᘬᙇヨ㦂య2-1 ◚᩿≧ἣ

෗┿3. ᘬᙇヨ㦂య3-1 ◚᩿≧ἣ

㸬ᅽ⦰ヨ㦂

㒊ᮦࡀᅽ⦰ࢆཷࡅࡿ㝿ࡢຊᏛ≉ᛶ࡟㛵ࡍࡿᇶ♏ࢹ࣮ࢱ

ࢆᚓࡿࡓࡵ࡟㸪ᅗ7࡟♧ࡍࡼ࠺࡞㒊ᮦ㛗90mm࡜㒊ᮦ㛗 180mmࡢ2✀㢮ࡢゅᙧ㗰⟶ヨ㦂య㸦᩿㠃45mm×45mm㸧

࡟ᑐࡋ㸪ᅽ⦰ヨ㦂ࢆ⾜ࡗࡓ㸬ࡇࡢ࡜ࡁᯈཌࡣ1.2mm㸪 1.0mm㸪0.8mmࡢ3✀㢮࡜ࡋ㸪ᯈཌࢆኚ໬ࡉࡏࡿࡇ࡜࡛

ᖜཌẚࢆኚ໬ࡉࡏࡓሙྜࡢᅽ⦰ᙉᗘࡢ≉ᛶࢆ᳨ウࡍࡿ㸬

⾲4࡟ᅽ⦰ヨ㦂యࡢ᩿㠃ᐃᩘࢆ♧ࡍ㸬

ヨ㦂యA ヨ㦂యB

ᅗ7. ᅽ⦰ヨ㦂యࡢᙧ≧㸦ᯈཌ1.2mm,1.0mm,0.8mm㸧

⾲4. ᅽ⦰ヨ㦂యࡢ᩿㠃ᐃᩘ୍ぴ

ᅗ8࠾ࡼࡧᅗ9࡟ヨ㦂యA㸦㒊ᮦ㛗90mm㸧࠾ࡼࡧヨ 㦂యB㸦㒊ᮦ㛗180mm㸧ࡢᅽ⦰ᛂຊᗘ-ኚ఩㛵ಀࢆ♧ࡍ㸬 ࡇࢀࡽࡢᅗࡼࡾ㸪ᯈཌࡀᑠࡉࡃ࡞ࡿ࡯࡝㸪ᒁ㒊ᗙᒅࡢᙳ 㡪ࡀ኱ࡁࡃ࡞ࡾ㸪ᅽ⦰ᙉᗘࡀᑠࡉࡃ࡞ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬

ࡲࡓ㸪㒊ᮦࡢ㛗ࡉࡣ㸪ᯈཌ1.2mmࡢヨ㦂య࡛ⱝᖸࡢᕪࡀ

࠶ࡿࡶࡢࡢ㸪࡯ࡰྠᵝࡢഴྥ࡛࠶ࡗࡓ㸬

⾲5࡟ᅽ⦰ヨ㦂ࡢ⤖ᯝ୍ぴࢆ♧ࡍ㸬⾲࡟ࡣ㸪ヨ㦂యഃ

㠃ࡢྛ4㠃ࡢ୰ኸ࡟ࡑࢀࡒࢀ㈞ࡗࡓࡦࡎࡳࢤ࣮ࢪࡢ್ࡢ ᖹᆒ್࠿ࡽồࡵࡓ᭱኱Ⲵ㔜᫬ࡢࡦࡎࡳᗘࡶྜࢃࡏ࡚♧ࡍ㸬

ྛヨ㦂యࡢᅽ⦰ᙉᗘ࡟ᑐࡍࡿᖜཌẚࡢᙳ㡪ࢆᅗ 10 ࡟♧

ࡍ㸬ࡲࡓྛᯈཌࡢヨ㦂యࡢᅽ⦰ᙉᗘࡢᖹᆒ್ࢆ⾲6࡟♧

ࡍ㸬⾲୰࡟ࡣ㸪ᯈཌ1.2mm࡟࠾ࡅࡿᅽ⦰ᙉᗘࢆᇶ‽࡜ࡋ

㻝㻙㻝 㻟㻣㻜㻚㻞 㻞㻤㻝㻚㻣 㻝㻢㻜㻞㻠㻟 㻟㻠㻚㻠㻤 㻜㻚㻟㻝㻣

㻝㻙㻞 㻟㻣㻟㻚㻡 㻞㻤㻣㻚㻞 㻝㻣㻝㻞㻥㻡 㻟㻟㻚㻣㻡 㻜㻚㻟㻝㻢

㻝㻙㻟 㻟㻣㻝㻚㻥 㻞㻤㻡㻚㻥 㻝㻣㻠㻣㻣㻡 㻟㻟㻚㻣㻣 㻜㻚㻟㻝㻢

㻞㻙㻝 㻠㻜㻝㻚㻢 㻟㻠㻢㻚㻤 㻝㻣㻠㻤㻜㻤 㻟㻟㻚㻜㻣 㻜㻚㻟㻝㻥

㻞㻙㻞 㻟㻥㻠㻚㻜 㻟㻟㻠㻚㻥 㻝㻤㻢㻥㻠㻡 㻟㻞㻚㻟㻤 㻜㻚㻟㻟㻠

㻞㻙㻟 㻟㻥㻢㻚㻜 㻟㻠㻤㻚㻡 㻝㻤㻟㻥㻥㻤 㻟㻞㻚㻥㻤 㻜㻚㻟㻝㻟

㻟㻙㻝 㻠㻝㻝㻚㻜 㻟㻣㻥㻚㻣 㻝㻣㻢㻝㻤㻥 㻞㻢㻚㻟㻞 㻜㻚㻟㻝㻣

㻟㻙㻞 㻠㻝㻟㻚㻜 㻟㻤㻣㻚㻢 㻝㻣㻟㻞㻤㻝 㻞㻣㻚㻡㻞 㻜㻚㻟㻜㻤

㻟㻙㻟 㻠㻝㻣㻚㻞 㻟㻤㻢㻚㻥 㻝㻣㻢㻝㻤㻟 㻞㻢㻚㻜㻡 㻜㻚㻟㻜㻞

ᘬᙇᙉ䛥 Vmax

N/mm² 㻟㻣㻞

㻟㻥㻣

㻠㻝㻠

㻞㻤㻡

㻟㻠㻟

㻟㻤㻡

㻝㻤㻝㻥㻝㻣

㻝㻣㻡㻞㻝㻤

㻜㻚㻟㻝㻢

㻜㻚㻟㻞㻞

㻜㻚㻟㻜㻥 N/mm²

䝲䞁䜾ಀᩘ

E N/mm²

㻝㻢㻤㻣㻣㻝 ヨ㦂య

ᘬᙇヨ㦂య䠍

ᘬᙇヨ㦂య䠎

ᘬᙇヨ㦂య䠏

㻟㻠㻚㻜

㻟㻞㻚㻤

㻞㻢㻚㻢 䝫䜰䝋䞁ẚ

Q

◚᩿ఙ䜃 G

% 㝆అᛂຊᗘ

Vy

ᯈཌ ᖜ 㒊ᮦ㛗 ᩿㠃✚ ᖜཌẚ

㼠㻌㻔㼙㼙㻕 㼎㻌㻔㼙㼙㻕 㻸㻌㻔㼙㼙㻕 㻭㻌㻔㼏㼙^㻞㻕 㻵㼤㻌㻔㼏㼙^㻠㻕 㻵㼥㻌㻔㼏㼙^㻠㻕 㼆㼤㻌㻔㼏㼙^㻟㻕 㼆㼥㻌㻔㼏㼙^㻟㻕 㼕㼤㻌㻔㼏㼙㻕 㼕㼥㻌㻔㼏㼙㻕 㼎㻛㼠

㻭㻙㻝 㻝㻚㻞 㻠㻡 㻥㻜 㻞㻚㻟㻥 㻣㻚㻢㻢 㻣㻚㻟㻡 㻟㻚㻠㻝 㻟㻚㻞㻣 㻝㻚㻣㻥 㻝㻚㻣㻢 㻟㻣㻚㻡

㻭㻙㻞 㻝㻚㻜 㻠㻡 㻥㻜 㻞㻚㻜㻡 㻢㻚㻣㻥 㻢㻚㻟㻤 㻟㻚㻜㻞 㻞㻚㻤㻠 㻝㻚㻤㻞 㻝㻚㻣㻢 㻠㻡㻚㻜

㻭㻙㻟 㻜㻚㻤 㻠㻡 㻥㻜 㻝㻚㻢㻥 㻡㻚㻢㻣 㻡㻚㻞㻝 㻞㻚㻡㻞 㻞㻚㻟㻞 㻝㻚㻤㻠 㻝㻚㻣㻢 㻡㻢㻚㻟

㻮㻙㻝 㻝㻚㻞 㻠㻡 㻝㻤㻜 㻞㻚㻟㻥 㻣㻚㻢㻢 㻣㻚㻟㻡 㻟㻚㻠㻝 㻟㻚㻞㻣 㻝㻚㻣㻥 㻝㻚㻣㻢 㻟㻣㻚㻡

㻮㻙㻞 㻝㻚㻜 㻠㻡 㻝㻤㻜 㻞㻚㻜㻡 㻢㻚㻣㻥 㻢㻚㻟㻤 㻟㻚㻜㻞 㻞㻚㻤㻠 㻝㻚㻤㻞 㻝㻚㻣㻢 㻠㻡㻚㻜

㻮㻙㻟 㻜㻚㻤 㻠㻡 㻝㻤㻜 㻝㻚㻢㻥 㻡㻚㻢㻣 㻡㻚㻞㻝 㻞㻚㻡㻞 㻞㻚㻟㻞 㻝㻚㻤㻠 㻝㻚㻣㻢 㻡㻢㻚㻟

᩿㠃஧ḟ༙ᚄ

ヨ㦂య ᩿㠃஧ḟ䝰䞊䝯䞁䝖 ᩿㠃ಀᩘ

90mm

45mm 45mm

180mm

45mm 45mm

࡚㸪ࡑࡢ್࡟ᑐࡍࡿᅽ⦰ᙉᗘࡢኚ໬⋡ࢆ♧ࡍ㸬⾲ࡼࡾ㸪 ᯈཌࡀ1.2mm࠿ࡽ0.8mm࡬࡜ῶᑡࡍࡿ࡜㸪ᅽ⦰ᙉᗘࡣ

⣙0.69ಸ࡜࡞ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬

ヨ㦂యA࡟࠾ࡅࡿ⤊ᒁ≧ἣࢆ෗┿4㹼෗┿6࡟♧ࡍ㸬 ࡍ࡭࡚ࡢヨ㦂య࡟࠾࠸࡚㸪᭱኱⪏ຊࢆ㉺࠼኱ࡁࡃኚᙧࡋ

࡚ࡶ㸪࠿ࡋࡵ㒊ศࡣࡋࡗ࠿ࡾ࡜ᔐྜࡉࢀ࡚࠾ࡾ㸪࠿ࡋࡵ

㒊ศࡀࡣࡎࢀࡿࡇ࡜ࡣ࡞࠿ࡗࡓ㸬

ᅗ8. ᅽ⦰ᛂຊᗘ㸫ኚ఩㛵ಀ㸦ヨ㦂యA㸧

ᅗ9. ᅽ⦰ᛂຊᗘ㸫ኚ఩㛵ಀ㸦ヨ㦂యB㸧

⾲5.ᅽ⦰ヨ㦂ࡢ⤖ᯝ୍ぴ

ᅗ10. ᖜཌẚࡢᙳ㡪

⾲6. ᅽ⦰ᙉᗘ≉ᛶ㸦ヨ㦂యᖹᆒ್㸧 ᯈཌ

㸦mm㸧 ᩿㠃ᑍἲ ᅽ⦰ᙉᗘ

㸦N/mm²㸧 ኚ໬⋡

1.2 45×45×1.2 290 1.00 1.0 45×45×1.0 250 0.86 0.8 45×45×0.8 199 0.69

෗┿4. ヨ㦂యA-1⤊ᒁ≧ἣ㸦ᯈཌ1.2mm㸧

෗┿5. ヨ㦂యA-2⤊ᒁ≧ἣ㸦ᯈཌ1.0mm㸧

෗┿6. ヨ㦂యA-3⤊ᒁ≧ἣ㸦ᯈཌ0.8mm㸧

௨ୖࡢᘬᙇヨ㦂㸪ᅽ⦰ヨ㦂ࡢ⤖ᯝ࠿ࡽ㸪ᯈཌ1.2mmࡢ

࠿ࡋࡵᡂᙧ㍍㔞ゅᙧ㗰⟶ࢆタィ࡟⏝࠸ࡿሙྜࡢᮦᩱᇶ‽

ᙉᗘࡣ➃ᩘࢆษࡾᤞ࡚㸪F=280N/mm²࡜ࡍࡿࡇ࡜࡜ࡋࡓ㸬

ࡲࡓ㸪㗰ᮦࡢࣖࣥࢢಀᩘࡣᘬᙇヨ㦂࡟ࡼࡿ᭱ᑠ್࡛࠶ࡿ

1.69×10⁵N/mm²ࡢ್ࢆ⏝࠸ࡿࡇ࡜࡜ࡋࡓ㸬

0 50 100 150 200 250 300 350

0 1 2 3 4 5 6 7 8

ᛂຊᗘ(N/mm2)

ኚ఩(mm) A-1

A-2 A-3

0 50 100 150 200 250 300 350

0 1 2 3 4 5 6 7 8

ᛂຊᗘ(N/mm2)

ኚ఩(mm) B-1

B-2 B-3

᭱኱Ⲵ㔜 ᅽ⦰ᙉᗘ ᭱኱Ⲵ㔜᫬ ᖜཌẚ

㻼㼙㼍㼤㻔㼗㻺㻕 䃢㻌㻔㻺㻛㼙㼙^㻞㻕 䜂䛪䜏ᗘ䃔㻔䃛㻕 㼎㻛㼠

㻭㻙㻝 㻢㻟㻚㻞 㻞㻢㻠 㻝㻣㻤㻜 㻟㻣㻚㻡

㻭㻙㻞 㻡㻝㻚㻥 㻞㻡㻟 㻞㻣㻢㻠 㻠㻡㻚㻜

㻭㻙㻟 㻟㻠㻚㻡 㻞㻜㻠 㻥㻝㻡 㻡㻢㻚㻟

㻮㻙㻝 㻣㻡㻚㻞 㻟㻝㻡 㻞㻡㻠㻢 㻟㻣㻚㻡

㻮㻙㻞 㻡㻜㻚㻠 㻞㻠㻢 㻞㻝㻢㻤 㻠㻡㻚㻜

㻮㻙㻟 㻟㻞㻚㻥 㻝㻥㻠 㻥㻜㻠 㻡㻢㻚㻟

ヨ㦂య

y = -4.7803x + 467.24

0 50 100 150 200 250 300 350

30 35 40 45 50 55 60

ᅽ⦰ᙉᗘ(N/mm2)

ᖜཌẚb/t

㸬 ᮏ

࡜

┿

࡟♧

Ỉ

ࣈࣞ

㖄

ྞ

1 㦂య 1-2

⪏㟈ኳ஭ᵓ㐀 ẁࣈ࣮ࣞ

ᮏ◊✲࡛ࡣ㸪 ࡋ࡚㍍㔞ゅᙧ 7࡟1ẁࣈࣞ

♧ࡍ㏻ࡾ࡛࠶

෗┿7. 1ẁ

✀ู ᑍἲ

Ỉᖹᮦ 100×

࣮ࣞࢫᮦ

㖄┤ᮦ 45×

ྞࡾ㺬㺼㺷㺢

1 ẁࣈ࣮ࣞࢫ య1-1㸦ᅗ11 2㸦ᅗ12ཧ↷

ᅗ11.

ຍຊ᪉ྥ

㐀㸦ࡪ࡝࠺Ჴ

࣮ࢫヨ㦂య ኳ஭᠜㧗ࡉࢆ

ᙧ㗰⟶࡟ࡼࡿ⪏

࣮ࣞࢫヨ㦂యࢆ

࠶ࡿ㸬

ẁࣈ࣮ࣞࢫヨ

⾲7. ౑⏝

ἲ࣭ᯈཌ

༢఩㔜 kg/m

×45×1.2 2.9

45×1.2 1.8

1/2’ -

ࢫ࡟࠾ࡅࡿヨ㦂 1ཧ↷㸧࠾ࡼࡧ

↷㸧ࡢ2㏻ࡾ࡟

ヨ㦂య1-1 㸧

ࢆ3m௨ୖࡢኳ

⪏㟈ኳ஭ᵓ㐀

ࢆ♧ࡍ㸬୺࡞౑

ヨ㦂య㸦㖄┤⿵

⏝㒊ᮦ᩿㠃

㔜㔞 m

᩿㠃✚

cm²

91 3.71

87 2.39

0.925

㦂యࡣ㖄┤⿵

ࡧ㖄┤⿵ᙉ㒊

࡟ࡘ࠸᳨࡚ウ

㸦㖄┤⿵ᙉᮦ࡞

ኳ஭ᵓ㐀ࢆᑐ

ࢆᥦ᱌ࡍࡿ㸬

౑⏝㒊ᮦࡣ⾲

⿵ᙉᮦ࠶ࡾ㸧

᩿㠃2ḟ࣮࣓ࣔ

cm⁴ Ix 50.8 1

7.66 7

0.0682

⿵ᙉ㒊ᮦࡢ࡞࠸

㒊ᮦࡢ࠶ࡿヨ㦂 ウࢆ⾜ࡗࡓ㸬

࡞ࡋ㸧

ᑐ㇟

෗

⾲7

ࣥࢺ

Iy 13.7

7.35

࠸ヨ 㦂య

ຍ

␒⧞

఩ࡀ 1/7 13 㟼ⓗ

ᅗ

఩㛵 ࡍ

෗┿

ࡍ㸬 ࡢ᭱

ࡒࢀ

࡛࠶

ヨ㦂 య࡛

ቑຍ

ᮦࡢ

┠ᶆኚ఩㻔㼙㼙㻕

ᅗ12.

ຍຊヨ㦂ࡣἜ

⧞ࡾ㏉ࡋ㍕Ⲵ ࡀ┠ᶆኚᙧゅ 75㸪1/50㸪1/

ཧ↷㸧㸪᭱⤊

ⓗຍຊࢆ⾜ࡗ ᅗ14࡟ヨ㦂య 㛵ಀࢆẚ㍑ࡍ

ࡿࡇ࡜࡛᭱኱

┿9ཧ↷㸧㸬⾲

㸬ヨ㦂య1-1

᭱኱⪏ຊࡣ3

ࢀ㸪ヨ㦂య1

࠶ࡿࡢ࡛㸪⪏

㦂య1-2ࡣ3

࡛ࡣ㸪㖄┤⿵

ຍࡋ㸪⪏ຊ㔜 ࡢ᭷ຠᛶࡀ♧

㻙㻟㻜㻜 㻙㻞㻜㻜 㻙㻝㻜㻜 㻜 㻝㻜㻜 㻞㻜㻜 㻟㻜㻜

㻜

┠ᶆኚ఩㻔㼙㼙㻕

㻝㻛㻠㻡㻜 㻝㻛㻟

ຍຊ᪉ྥ

ヨ㦂య1-2

ᅗ13. ㍕Ⲵ

Ἔᅽࢪࣕࢵ࢟࡟

Ⲵࢆస⏝ࡉࡏ㸪 ゅ 1/450㸪1/3

20㸪1/15rad

⤊ࢧ࢖ࢡࣝࡣヨ ࡗࡓ㸬

య1-1࠾ࡼࡧ ࡍࡿ㸬࠸ࡎࢀࡢ

኱⪏ຊ࡜࡞ࡿ◚

⾲8࡟1ẁࣈࣞ

ࡢ᭱኱⪏ຊࡣ 39.0kN ࡛࠶ࡗ

-1ࡣ107.32

⪏ຊ㔜㔞ẚ㸦P 0.6࡜࡞ࡿ㸬ࡍ

⿵ᙉᮦࢆタࡅࡿ

㔜㔞ẚࡣ㸪1.5ಸ

♧ࡉࢀࡓ㸬

㻡

䝃䜲

㻜㻜 㻝㻛㻞㻜㻜 㻝㻛㻝㻡㻜 㻝

㸦㖄┤⿵ᙉᮦ

Ⲵࣉࣟࢢ࣒ࣛ

࡟ࡼࡗ࡚㸪Ỉ ኳ஭᠜㧗ࡉ 300㸪1/200㸪 d ࡜࡞ࡿࡼ࠺

ヨ㦂యࡀ⤊ᒁ

ࡧヨ㦂య1-2࡟ ࡢヨ㦂యࡶࣈ

◚ቯᛶ≧࡛࠶

࣮ࣞࢫヨ㦂య ࡣ21.7kN࡛࠶

ࡗࡓ㸬ྛヨ㦂 kg㸪ヨ㦂య1 P/W^{㸧ࡣヨ㦂య}

ࡍࢃ࡞ࡕ㸪1

ࡿࡇ࡜࡛㸪᭱኱

ಸࡢᛶ⬟࡜࡞

㻝㻜

䜲䜽䝹ᩘ

㻝㻛㻝㻜㻜 㻝㻛㻣㻡 㻝㻛㻡㻜

࠶ࡾ㸧

Ỉᖹ᪉ྥ࡟ṇ㈇

࡟ᑐࡍࡿỈᖹ 1/150㸪1/100

࡟₞ቑࡉࡏ ᒁ≧ἣ࡟⮳ࡿࡲ

࡟ᑐࡍࡿⲴ㔜

ࣈ࣮ࣞࢫᮦࡀᗙ ࡗࡓ㸦෗┿ 8 యࡢ⪏ຊ≉ᛶࢆ

࠶ࡾ㸪ヨ㦂య 㦂యࡢ㉁㔞ࡀࡑ

1-2ࡣ129.95 య1-1ࡣ20.6 ẁࣈ࣮ࣞࢫヨ

኱⪏ຊࡣ1.8

࡞ࡾ㸪㖄┤⿵ᙉ

㻝㻡

㻝㻛㻞㻜 㻝㻛㻝㻡

㈇஺

ᖹኚ 0㸪 㸦ᅗ

ࡲ࡛

㔜-ኚ ᗙᒅ 8㸪

ࢆ♧

1-2 ࡑࢀ

5kg 6㸪 ヨ㦂 ಸ ᙉ㒊

㻞㻜

ᅗ14. Ⲵ㔜-ኚ఩㛵ಀ

෗┿8. ヨ㦂య1-1ࡢ⤊ᒁ≧ἣ㸦ࣈ࣮ࣞࢫᮦࡢᗙᒅ㸧

෗┿9. ヨ㦂య1-2ࡢ⤊ᒁ≧ἣ㸦ࣈ࣮ࣞࢫᮦࡢᗙᒅ㸧

⾲8. 1ẁࣈ࣮ࣞࢫヨ㦂యࡢ⪏ຊ≉ᛶ ヨ㦂యྡ 㖄┤

⿵ᙉᮦ

᭱኱⪏ຊ P(kN)

㉁㔞 M(kg)

㔜㔞 W(kN)

⪏ຊ㔜㔞 ẚP/W ヨ㦂య1-1 ࡞ࡋ 21.7 107.32 1.05 20.6 ヨ㦂య1-2 ࠶ࡾ 39.0 129.95 1.27 30.6

㸬ࡲ࡜ࡵ

ᮏ◊✲࡛ࡣ㸪࠿ࡋࡵᡂᙧ࡟ࡼࡿ㍍㔞ᙧ㗰⟶ࡢᮦᩱᘬᙇ ヨ㦂ཬࡧᅽ⦰ヨ㦂ࢆ⾜࠸㸪ᮦᩱ≉ᛶࢆᢕᥱࡋࡓ㸬ࡑࡋ࡚

⪏㟈ᛶࢆྥୖࡉࡏࡓ᪂ᆺࡢ኱ᆺྞࡾኳ஭ᵓ㐀㸦⪏㟈ᵓ㐀 ᆺࡪ࡝࠺Ჴ㸧ࢆᥦ᱌ࡋ㸪᥋ྜ㒊ࡢࢹ࢕ࢸ࣮ࣝ࡟ᑐࡍࡿ⪏

㟈ᛶ⬟ࢆ᳨ウࡋࡓ㸬ࡑࡢ⤖ᯝ㸪㍍㔞࡛㧗࠸⪏㟈ᛶࢆ᭷ࡍ

ࡿኳ஭ᵓ㐀ࢆᵓ⠏࡛ࡁࡓ㸬

ཧ⪃ᩥ⊩

(1) ᪥⤒࢔࣮࢟ࢸࢡࢳࣗ࢔⦅㸪“ᮾ᪥ᮏ኱㟈⅏ࡢᩍカ 㒔 ᕷ࣭ᘓ⠏⦅”㸪᪥⤒BP♫㸪(2011-6)

(2) ᑠᯘಇኵ㸪⏤฼㝯⾜㸪Ⲩ஭ᬛ୍㸪“㗰〇ኳ஭ୗᆅࢆ⏝

࠸ࡓྞࡾኳ஭ࡢ⪏㟈ᛶ࡟㛵ࡍࡿ◊✲”㸪᪥ᮏᘓ⠏Ꮫ఍

ᵓ㐀⣔ㄽᩥ㞟㸪➨73ᕳ㸪➨630ྕ㸪(2008-8)㸪 pp.1295-1302

(3) ᑎᮏ⩧ྐ㸪Ọ㔝ᗣ⾜㸪㎷ᒸ㟼㞝㸪“⪏㟈タィࡉࢀࡓኳ

஭ࡢỈᖹຍຊᐇ㦂”㸪᪥ᮏᘓ⠏Ꮫ఍኱఍Ꮫ⾡ㅮ₇᱾ᴫ 㞟㸦໭㝣㸧㸪ᵓ㐀I㸪(2010-9)㸪pp.859-860 (4) 㧗ᮌᆂ୍㑻㸪Ώ㎶ᜨ௓㸪኱㏕຾ᙪ㸪ྜྷ⏣ᏹ୍㸪኱ᗞ

❶㸪ᑠᯘಇኵ㸪Ⲩ஭ ᬛ୍㸪“㔠ᒓࣃࢿࣝኳ஭ࡢ⪏㟈ᛶ

࡟㛵ࡍࡿ◊✲㸦ࡑࡢ11㸧ྞࡾୗࡆタഛࢆྵࡴኳ஭ࡢ Ỉᖹຍຊヨ㦂”㸪᪥ᮏᘓ⠏Ꮫ఍኱఍Ꮫ⾡ㅮ₇᱾ᴫ㞟㸦໭

㝣㸧㸪ᵓ㐀I㸪(2010-9)㸪pp.863-864

(5) ᯇᮏៅஓ㸪⸨㇂⩏ಙ㸪బ⸨බ❶㸪“ྞࡾኳ஭ᵓ㐀ࡢ⪏

㟈ᛶ⬟࡟㛵ࡍࡿ◊✲”㸪᪥ᮏᘓ⠏Ꮫ఍୰ᅜᨭ㒊◊✲ሗ

࿌㞟㸪➨34ᕳ㸪(2011-3)㸪pp.57-60

(6) ᯇᮏៅஓ㸪⸨㇂⩏ಙ㸪బ⸨බ❶㸪“ྞࡾኳ஭ᵓ㐀ࡢ⪏

㟈ᛶ⬟࡟㛵ࡍࡿ◊✲”㸪᪥ᮏᘓ⠏Ꮫ఍୰ᅜᨭ㒊◊✲ሗ

࿌㞟㸪➨35ᕳ㸪(2012-3)㸪pp.293-296

(7) ᪥ᮏᘓ⠏Ꮫ఍㸪㠀ᵓ㐀ᮦࡢᏳ඲ᛶホ౯ཬࡧⴠୗ஦ᨾ 㜵Ṇ࡟㛵ࡍࡿ≉ูㄪᰝጤဨ఍㸪ኳ஭➼ࡢ㠀ᵓ㐀ᮦࡢⴠ

ୗ஦ᨾ㜵Ṇ࢞࢖ࢻࣛ࢖ࣥ㸪2013 ᖺ3᭶4᪥∧ሗ࿌᭩

(8) ᯇᮏៅஓ㸪బ⸨බ❶㸪⸨㇂⩏ಙ㸪“㍍㔞ゅᙧ㗰⟶࡟ࡼ

ࡿ⪏㟈ྞࡾኳ஭ᵓ㐀ࡢຊᏛⓗ≉ᛶ࡟㛵ࡍࡿ◊✲”㸪㏆

␥኱ᏛᕤᏛ㒊◊✲ሗ࿌㸪No.47㸪(2013-12)㸪pp.49-54

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Ⲵ㔜(kN)

ኚ఩(mm)

ヨ㦂య1-2(㖄┤⿵ᙉᮦ䛒䜚) ヨ㦂య1-1(㖄┤⿵ᙉᮦ䛺䛧)