近畿大学次世代基盤技術研究所報告 Vol. 5（2014）73－78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 Matsumotoඹྠ◊✲⪅ ᰴᘧ఍♫బ⸨ᆺ㗰〇సᡤ*2  ௦⾲ྲྀ⥾ᙺ బ⸨ බ❶
Masafumi Satoᗈᓥ኱Ꮫྡ㄃ᩍᤵ*3 ⸨㇂ ⩏ಙ
Yoshinobu Fujitani
The Great East Japan Earthquake occurred on March 11, 2011, it has been reported thatmany dropped out damage for nonstructural components (ceiling) in a buildings. The fall ofceiling 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 suchas 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 withcaulking is proposed. In this paper, the results of vertical and horizontal loading test areshown, and the mechanical properties of suspended ceiling structure are verified.
Keywords: Ceiling structures, Lightweight square steels, Caulking*ཎ✏ཷ௜ 2014 ᖺ 5 ᭶ 12 ᪥
*1 ࠛ739-2116 ᮾᗈᓥᕷ㧗ᒇ࠺ࡵࡢ㎶ 1 ␒  E-Mail matsumoto@hiro.kindai.ac.jp*2 ࠛ733-0802 ᗈᓥᕷす༊୕⁪ᮏ⏫ 2-24-24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⟶ࡣᅗ 1 ࡟♧ࡍࡼ࠺࡞᩿㠃ᙧ≧࡛࠶ࡾ㸪࣮࣎ࢻ㢮࡞࡝ࡢ㠃ᮦࢆࢫࢡ࣮ࣜࣗࢿࢪ࡟ࡼࡾࣅࢫṆࡵࡍࡿ㝿࡟㸪ࢫࢡ࣮ࣜࣗࢿࢪඛ➃ࡢࣈࣞࢆపῶࡋ㸪సᴗᛶࢆୖࡆࡿࡓࡵ࡟㸪஧ഃ㠃࡟ࣅ࣮ࢻຍᕤ㠃ࢆ᭷ࡋ࡚࠸ࡿ㸬ࣇࣛࢵࢺ㠃ࣅ࣮ࢻ㠃ࣇࣛࢵࢺ㠃㸬ࡣࡌࡵ࡟
2011 ᖺ 3 ᭶ 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ࡍࡿᇶ♏ⓗ≉ᛶࢆㄪᰝࡍࡿ࡜࡜ࡶ࡟(5)㸪
࠿ࡋࡵຍᕤ࡟ࡼࡗ࡚
ᡂᙧࡉࢀࡓ㍍㔞ᙧ㗰⟶ࢆ⏝࠸࡚⪏㟈ᛶࢆྥୖࡉࡏࡓ᪂ᆺࡢ኱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࢕ࢸ࣮ࣝࢆᨵⰋࡍࡿࡇ࡜࡛㸪ࡼࡾ㧗࠸⪏㟈ᛶࡢ㍍㔞⪏㟈ኳ஭ࢆᥦ᱌ࡍࡿ㸬ࣅ࣮ࢻ㠃   ࠿ࡋࡵ㒊ศ㸦ࢥ࣮ࢼ࣮㸧ᅗ 1. ࠿ࡋࡵᡂᙧゅᙧ㗰⟶ࡢ᩿㠃ᙧ≧ 㗰ᮦࡣ JIS G3302 ࡟㐺ྜࡍࡿ⁐⼥ள㖄ࡵࡗࡁ㗰㕏(SGCC-Z12)࡛࠶ࡿ㸬㗰ᮦࡢᘬᙇヨ㦂ࡣᡂᙧ๓ࡢࢥ࢖ࣝࡼ
ࡾษࡾฟࡋ࡚〇సࡋࡓヨ㦂య 1㸪෭㛫ຍᕤᡂᙧᚋࡢ㒊ᮦࡢࣇࣛࢵࢺ㠃ࡼࡾษࡾฟࡋ࡚〇సࡋࡓヨ㦂య 2㸪෭㛫ຍᕤᡂᙧᚋࡢ㒊ᮦࡢࣅ࣮ࢻ㠃ࡼࡾษࡾฟࡋ࡚〇సࡋࡓヨ㦂య 3 ࡢ 3 ✀㢮࡜ࡋ㸪ࡑࢀࡒࢀྠ୍✀㢮࡟ᑐࡋ 3 యࡎࡘヨ㦂∦ࢆษࡾฟࡋ㸪JIS ࡢ㔠ᒓᮦᩱᘬᙇヨ㦂᪉ἲ(JIS Z  E-Mail sato.m@satock.co.jp*3 ࠛ739-2103 ᮾᗈᓥᕷ㙾ᒣ 1-4-1－ 73 －2241)࡟ᇶ࡙ࡃᘬ
ᘬᙇヨ㦂ࢆᐇ
ᐇ᪋ࡋ㸪≉ᛶࢆ
ࢆẚ㍑ࡋࡓ㸦⾲⾲1 ཧ↷㸧ཧ 㸬ヨ㦂య
యࡢᯈཌࡣ 1.22mm ࡛࠶ࡾ㸪
㸪ᅗ 2 ࡟♧ࡍࡍⷧᯈᮦᮦᩱ࡟౑⏝ࡉ
ࡉࢀࡿ 5 ྕヨ㦂㦂∦࡟ࡼࡾᘬ
ᘬᙇヨ㦂ࢆ⾜ࡗࡗࡓ㸬ヨ㦂㦂࡟⏝࠸ࡓ㗰
㗰ᮦࢥ࢖ࣝࡢᮦᮦᩱ᳨ᰝド᫂᭩
᭩㸦࣑ࣝࢩ࣮ࢺ㸧࡟ググ㍕ࡉࢀ࡚࠸
࠸ࡿ໬Ꮫᡂศࡢࡢ≉ᛶ್ࢆ⾲ 2 ࡟♧ࡍ㸬࠸࠸ࡎࢀࡶ JIS つ᱁ࢆࢆ㐺ྜࡋ࡚࠸ࡿࡿ㸬⾲ 1. ᘬᙇヨヨ㦂య୍ぴヨヨ㦂యྡ

ヨヨ㦂యࡢ〇స᪉᪉ἲᘬᙇᙇヨ㦂య 1ᡂᡂᙧ๓ࡢࢥ࢖ࣝ
ࣝࡼࡾษࡾฟࡋ࡚〇సࡋࡓヨ㦂㦂య

ᅗ 3. ᘬᙇヨ㦂య 1 ࡢⲴ㔜㸫ኚ఩఩㛵ಀ෭෭㛫ຍᕤᡂᙧᚋ
ᚋࡢ㒊ᮦࡢࣇࣛࢵࢺ㠃ࡼࡾษࡾࡾฟᘬᙇᙇヨ㦂య 2ࡋࡋ࡚〇సࡋࡓヨヨ㦂య෭෭㛫ຍᕤᡂᙧᚋᚋࡢ㒊ᮦࡢࣅ࣮࣮ࢻ㠃ࡼࡾษࡾฟฟࡋᘬᙇᙇヨ㦂య 3࡚࡚〇సࡋࡓヨ㦂㦂య఩㛵ಀᅗ 4. ᘬᙇヨ㦂య 2 ࡢⲴ㔜㸫ኚ఩ᅗ 2.
2 ᘬᙇヨ㦂∦∦㸦5 ྕヨ㦂∦∦㸧⾲ 2. ᮦᩱ᳨ᰝド᫂᫂᭩㸦࣑ࣝࢩ࣮
࣮ࢺ㸧
ࢥ࢖ࣝᑍἲ

㉁㔞

(mmm×mm×mm)(kg)

1.2×1219×844

9670

఩㛵ಀ
ᅗ 5. ᘬᙇヨ㦂య 3 ࡢⲴ㔜㸫ኚ఩

໬Ꮫᡂศ
ศ(%)
CSinMnPS×10-3×10-2×100-2×10-3×10-3
×59

2.5199108

 ᅗ 3㹼ᅗ 5 ࡟ᘬᙇヨ㦂య࡟
1 ࠿ࡽᘬᙇヨ㦂㦂య 3 ࡢⲴ㔜㔜㸫ኚ఩఩㛵ಀࢆ♧ࡍࡍ㸬ࡲࡓ㸪ᅗ 6 ࡟ᘬᙇヨ㦂యయ 1-1㸪ᘬᙇヨヨ㦂
య 2-1㸪ヨ㦂య 3-13 ࡟ᑐࡍࡿᛂᛂຊᗘ㸫ࡦࡎࡎࡳᗘ㛵ಀࢆẚẚ㍑
ࡍࡿ㸬ᅗ 6. ᛂຊᗘ㸫㸫ࡦࡎࡳᗘ㛵ಀಀ

－ 74 － 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య 1 ࡛ࡣ 372N/mm2㸪ᘬᙇヨ㦂య 2 ࡛ࡣ 397N/mm2 㸪ᘬᙇヨ㦂య 3 ࡛ࡣ414N/mm2 ࡛࠶ࡗࡓ㸬ᘬᙇᙉࡉࡣᡂᙧ๓ࡢࢥ࢖ࣝࡼࡾษࡾฟࡋ࡚〇సࡋࡓᘬᙇヨ㦂య 1 ࡼࡾࡶ㸪෭㛫ຍᕤᡂᙧᚋࡢ㒊ᮦࡢࣇࣛࢵࢺ㠃ࡼࡾษࡾฟࡋ࡚〇సࡋࡓᘬᙇヨ㦂య
2㸪ࡉࡽ࡟෭㛫ຍᕤᡂᙧᚋࡢ㒊ᮦࡢࣅ࣮ࢻ㠃ࡼࡾษࡾฟࡋ࡚〇సࡋࡓᘬᙇヨ㦂య 3 ࡢ㡰࡟኱ࡁࡃ࡞ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬ࡲࡓ㸪㝆అᛂຊᗘࡣࡑࢀࡒࢀ㸪ᘬᙇヨ㦂య 1 ࡣ 285N/mm2㸪
2
ᘬᙇヨ㦂య 2 ࡣ 343N/mm 㸪ᘬᙇヨ㦂య 3 ࡣ 385N/mm2࡛ ࠶ ࡗ ࡓ 㸬 ࡲ ࡓ 㸪 ࣖ ࣥ ࢢ ಀ ᩘ ࡣ 1.69×105 㹼
1.82×105N/mm2 ࡛࠶ࡾ㸪୍⯡ⓗ࡞㗰ᮦ(2.05×105N/mm2)
࡟ẚ࡭ 1 ๭⛬ᗘᑠࡉ࠸ࡇ࡜ࡀ☜ㄆࡉࢀࡓ㸬◚᩿ఙࡧࡣᘬ
ᙇヨ㦂య 1 ࡛ࡣ 34.0%㸪ᘬᙇヨ㦂య 2 ࡛ࡣ 32.8%㸪ᘬᙇヨ㦂య 3 ࡛ࡣ 26.6%࡛࠶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෗┿ 3. ᘬᙇヨ㦂య 3-1 ◚᩿≧ἣ㸬ᅽ⦰ヨ㦂㒊ᮦࡀᅽ⦰ࢆཷࡅࡿ㝿ࡢຊᏛ≉ᛶ࡟㛵ࡍࡿᇶ♏ࢹ࣮ࢱࢆᚓࡿࡓࡵ࡟㸪ᅗ 7 ࡟♧ࡍࡼ࠺࡞㒊ᮦ㛗 90mm ࡜㒊ᮦ㛗
180mm ࡢ 2 ✀㢮ࡢゅᙧ㗰⟶ヨ㦂య㸦᩿㠃 45mm×45mm㸧
࡟ᑐࡋ㸪ᅽ⦰ヨ㦂ࢆ⾜ࡗࡓ㸬ࡇࡢ࡜ࡁᯈཌࡣ 1.2mm㸪
1.0mm㸪0.8mm ࡢ 3 ✀㢮࡜ࡋ㸪ᯈཌࢆኚ໬ࡉࡏࡿࡇ࡜࡛
ᖜཌẚࢆኚ໬ࡉࡏࡓሙྜࡢᅽ⦰ᙉᗘࡢ≉ᛶࢆ᳨ウࡍࡿ㸬
⾲ 4 ࡟ᅽ⦰ヨ㦂యࡢ᩿㠃ᐃᩘࢆ♧ࡍ㸬
45mm

⾲ 3. ᘬᙇヨ㦂⤖ᯝ୍ぴ
ᘬᙇᙉ䛥
ヨ㦂య

V max

㻝㻙㻝
ᘬᙇヨ㦂య䠍 㻝㻙㻞㻝㻙㻟㻞㻙㻝ᘬᙇヨ㦂య䠎 㻞㻙㻞㻞㻙㻟㻟㻙㻝ᘬᙇヨ㦂య䠏 㻟㻙㻞㻟㻙㻟N/mm㻟㻣㻜㻚㻞㻟㻣㻟㻚㻡 㻟㻣㻞㻟㻣㻝㻚㻥㻠㻜㻝㻚㻢㻟㻥㻠㻚㻜 㻟㻥㻣㻟㻥㻢㻚㻜㻠㻝㻝㻚㻜㻠㻝㻟㻚㻜 㻠㻝㻠㻠㻝㻣㻚㻞

㝆అᛂຊᗘ

Vy
22N/mm㻞㻤㻝㻚㻣㻞㻤㻣㻚㻞 㻞㻤㻡㻞㻤㻡㻚㻥㻟㻠㻢㻚㻤㻟㻟㻠㻚㻥 㻟㻠㻟㻟㻠㻤㻚㻡㻟㻣㻥㻚㻣㻟㻤㻣㻚㻢 㻟㻤㻡㻟㻤㻢㻚㻥䝲䞁䜾ಀᩘ
E2N/mm㻝㻢㻜㻞㻠㻟㻝㻣㻝㻞㻥㻡 㻝㻢㻤㻣㻣㻝㻝㻣㻠㻣㻣㻡㻝㻣㻠㻤㻜㻤㻝㻤㻢㻥㻠㻡 㻝㻤㻝㻥㻝㻣㻝㻤㻟㻥㻥㻤㻝㻣㻢㻝㻤㻥㻝㻣㻟㻞㻤㻝 㻝㻣㻡㻞㻝㻤㻝㻣㻢㻝㻤㻟

45mm
◚᩿ఙ䜃

䝫䜰䝋䞁ẚ

GQ

45mm%
㻟㻠㻚㻠㻤㻟㻟㻚㻣㻡
㻟㻟㻚㻣㻣
㻟㻟㻚㻜㻣
㻟㻞㻚㻟㻤
㻟㻞㻚㻥㻤㻞㻢㻚㻟㻞㻞㻣㻚㻡㻞㻞㻢㻚㻜㻡

㻟㻠㻚㻜

㻟㻞㻚㻤

㻞㻢㻚㻢

㻜㻚㻟㻝㻣
㻜㻚㻟㻝㻢 㻜㻚㻟㻝㻢㻜㻚㻟㻝㻢㻜㻚㻟㻝㻥㻜㻚㻟㻟㻠 㻜㻚㻟㻞㻞㻜㻚㻟㻝㻟㻜㻚㻟㻝㻣㻜㻚㻟㻜㻤 㻜㻚㻟㻜㻥
㻜㻚㻟㻜㻞

45mm

180mm

90mm

ヨ㦂య A      ヨ㦂య B
ᅗ 7. ᅽ⦰ヨ㦂యࡢᙧ≧㸦ᯈཌ 1.2mm,1.0mm,0.8mm㸧
⾲ 4. ᅽ⦰ヨ㦂యࡢ᩿㠃ᐃᩘ୍ぴヨ㦂య㻭㻙㻝㻭㻙㻞㻭㻙㻟㻮㻙㻝㻮㻙㻞㻮㻙㻟

෗┿ 1. ᘬᙇヨ㦂య 1-1 ◚᩿≧ἣ෗┿ 2. ᘬᙇヨ㦂య 2-1 ◚᩿≧ἣ᩿㠃஧ḟ༙ᚄ ᖜཌẚ᩿㠃ಀᩘᯈཌᖜ㒊ᮦ㛗 ᩿㠃✚ ᩿㠃஧ḟ䝰䞊䝯䞁䝖㼎㻛㼠㼠㻌㻔㼙㼙㻕 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 ᅗ 8 ࠾ࡼࡧᅗ 9 ࡟ヨ㦂య A㸦㒊ᮦ㛗 90mm㸧࠾ࡼࡧヨ㦂య B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ᯈཌ 1.2mm ࡢ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ࡢྛ 4 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ᯈཌ 1.2mm ࡟࠾ࡅࡿᅽ⦰ᙉᗘࢆᇶ‽࡜ࡋ－ 75 －⾲ 6. ᅽ⦰ᙉᗘ≉ᛶ㸦ヨ㦂యᖹᆒ್㸧࡚㸪ࡑࡢ್࡟ᑐࡍࡿᅽ⦰ᙉᗘࡢኚ໬⋡ࢆ♧ࡍ㸬⾲ࡼࡾ㸪
ᯈཌࡀ 1.2mm ࠿ࡽ 0.8mm ࡬࡜ῶᑡࡍࡿ࡜㸪ᅽ⦰ᙉᗘࡣ
⣙ 0.69 ಸ࡜࡞ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬ヨ㦂య A ࡟࠾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

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

350

ᛂຊᗘ(N/mm2)300

A-1250200A-2A-3150
100
50
00

12345678ኚ఩(mm)ᅗ 8. ᅽ⦰ᛂຊᗘ㸫ኚ఩㛵ಀ㸦ヨ㦂య A㸧

෗┿ 4. ヨ㦂య A-1 ⤊ᒁ≧ἣ㸦ᯈཌ 1.2mm㸧

350

ᛂຊᗘ(N/mm2)300

B-1250200

B-2B-3150
100
50
00

12345678ኚ఩(mm)ᅗ 9. ᅽ⦰ᛂຊᗘ㸫ኚ఩㛵ಀ㸦ヨ㦂య B㸧
⾲ 5. ᅽ⦰ヨ㦂ࡢ⤖ᯝ୍ぴヨ㦂య㻭㻙㻝㻭㻙㻞㻭㻙㻟㻮㻙㻝㻮㻙㻞㻮㻙㻟᭱኱Ⲵ㔜 ᅽ⦰ᙉᗘ㻼㼙㼍㼤㻔㼗㻺㻕 䃢㻌㻔㻺㻛㼙㼙㻞㻕
㻢㻟㻚㻞
㻞㻢㻠
㻡㻝㻚㻥
㻞㻡㻟
㻟㻠㻚㻡
㻞㻜㻠
㻣㻡㻚㻞
㻟㻝㻡
㻡㻜㻚㻠
㻞㻠㻢
㻟㻞㻚㻥
㻝㻥㻠

෗┿ 5. ヨ㦂య A-2 ⤊ᒁ≧ἣ㸦ᯈཌ 1.0mm㸧᭱኱Ⲵ㔜᫬䜂䛪䜏ᗘ䃔㻔䃛㻕
㻝㻣㻤㻜㻞㻣㻢㻠㻥㻝㻡㻞㻡㻠㻢㻞㻝㻢㻤㻥㻜㻠ᖜཌẚ㼎㻛㼠
㻟㻣㻚㻡㻠㻡㻚㻜㻡㻢㻚㻟㻟㻣㻚㻡㻠㻡㻚㻜
㻡㻢㻚㻟

350

ᅽ⦰ᙉᗘ(N/mm2)

300250෗┿ 6. ヨ㦂య A-3 ⤊ᒁ≧ἣ㸦ᯈཌ 0.8mm㸧

200

y = -4.7803x + 467.24

150
100
50
030

35

40

4550

ᖜཌẚb/t5560

 ௨ୖࡢᘬᙇヨ㦂㸪ᅽ⦰ヨ㦂ࡢ⤖ᯝ࠿ࡽ㸪ᯈཌ 1.2mm ࡢ࠿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/mm2 ࡢ್ࢆ⏝࠸ࡿࡇ࡜࡜ࡋࡓ㸬ᅗ 10. ᖜཌẚࡢᙳ㡪－ 76 －㸬⪏㟈ኳ஭ᵓ㐀㐀㸦ࡪ࡝࠺Ჴ㸧  ẁࣈ࣮࣮ࣞࢫヨ㦂య ᮏ◊✲࡛ࡣ㸪ᮏ
ࢆ 3m ௨ୖࡢኳ
ኳ஭ᵓ㐀ࢆᑐ
ᑐ㇟ኳ஭᠜㧗ࡉࢆ
࡜ࡋ࡚㍍㔞ゅᙧᙧ㗰⟶࡟ࡼࡿ⪏⪏㟈ኳ஭ᵓ㐀ࢆᥦ᱌ࡍࡿ㸬෗┿ 7 ࡟ 1 ẁࣈ࣮ࣞࣞࢫヨ㦂యࢆ
ࢆ♧ࡍ㸬୺࡞౑౑⏝㒊ᮦࡣ⾲
⾲7࡟♧♧ࡍ㏻ࡾ࡛࠶࠶ࡿ㸬ຍຊ᪉ྥ

ᅗ 12. ヨ㦂య 1-2㸦㖄┤⿵ᙉᮦ࠶ࡾ㸧㻟㻜㻜෗┿ 7. 1 ẁࣈ࣮ࣞࢫヨẁヨ㦂య㸦㖄┤⿵⿵ᙉᮦ࠶ࡾ㸧㻝㻛㻠㻡㻜 㻝㻛㻟㻜㻜┠ᶆኚ఩㻔㼙㼙㻕

⾲ 7. ౑⏝⏝㒊ᮦ᩿㠃᩿㠃 2 ḟ࣮࣓ࣔࣥࢺ
✀ูỈỈᖹᮦ
ࣈ࣮ࣞࣞࢫᮦ㖄㖄┤ᮦྞྞࡾ㺬㺼㺷㺢

༢఩㔜㔜㔞

᩿㠃✚

kg/m
m

cm2

100××45×1.2

2.9
91

45×45×1.2
1/2’

ᑍἲἲ࣭ᯈཌ

㻝
㻝㻛㻝㻜㻜

㻝㻛㻣㻡

㻝㻛㻡㻜

㻝㻛㻞㻜

㻝㻛㻝㻡

㻝㻜㻜
㻜
㻜

㻡

㻝㻜

㻝㻡

㻞㻜

㻙㻝㻜㻜

cm4Ix

Iy

㻙㻞㻜㻜

3.71

50.8

1
13.7

㻙㻟㻜㻜

1.8
87

2.39

7.66

7
7.35

-0.9250.0682 1 ẁࣈ࣮ࣞࢫ
ࢫ࡟࠾ࡅࡿヨ㦂㦂యࡣ㖄┤⿵⿵ᙉ㒊ᮦࡢ࡞࠸࠸ヨ㦂య
య 1-1㸦ᅗ 11
1 ཧ↷㸧࠾ࡼࡧࡧ㖄┤⿵ᙉ㒊㒊ᮦࡢ࠶ࡿヨ㦂㦂య1-22㸦ᅗ 12 ཧ↷↷㸧ࡢ 2 ㏻ࡾ࡟࡟ࡘ࠸᳨࡚ウウࢆ⾜ࡗࡓ㸬ຍຊ᪉ྥ㻝㻛㻞㻜㻜 㻝㻛㻝㻡㻜㻞㻜㻜䜲䜽䝹ᩘ䝃䜲Ⲵࣉࣟࢢ࣒ࣛ
ᅗ 13. ㍕Ⲵຍຊヨ㦂ࡣἜ
ຍἜᅽࢪࣕࢵ࢟࡟࡟ࡼࡗ࡚㸪ỈỈᖹ᪉ྥ࡟ṇ㈇㈇஺
␒⧞
⧞ࡾ㏉ࡋ㍕Ⲵ
Ⲵࢆస⏝ࡉࡏ㸪ኳ஭᠜㧗ࡉ࡟ᑐࡍࡿỈᖹᖹኚ఩ࡀ
ࡀ┠ᶆኚᙧゅゅ 1/450㸪1/3
300㸪1/200㸪1/150㸪1/100
0㸪
1/7
75㸪1/50㸪1/20㸪1/15radd ࡜࡞ࡿࡼ࠺࡟₞ቑࡉࡏ㸦ᅗ㸪᭱⤊
13 ཧ↷㸧
⤊ࢧ࢖ࢡࣝࡣヨヨ㦂యࡀ⤊ᒁᒁ≧ἣ࡟⮳ࡿࡲࡲ࡛ⓗຍຊࢆ⾜ࡗࡗࡓ㸬㟼ⓗ ᅗ 14 ࡟ヨ㦂య
య 1-1 ࠾ࡼࡧ
ࡧヨ㦂య 1-2 ࡟ᑐࡍࡿⲴ㔜࡟㔜-ኚ఩㛵㛵ಀࢆẚ㍑ࡍ
ࡍࡿ㸬࠸ࡎࢀࡢ
ࡢヨ㦂యࡶࣈ
ࣈ࣮ࣞࢫᮦࡀᗙ
ᗙᒅࡍࡿࡇ࡜࡛᭱኱
኱⪏ຊ࡜࡞ࡿ◚◚ቯᛶ≧࡛࠶ࡗࡓ㸦෗┿ 8㸪
8෗┿┿ 9 ཧ↷㸧㸬⾲ 8 ࡟ 1 ẁࣈ࣮ࣞࣞࢫヨ㦂య
యࡢ⪏ຊ≉ᛶࢆࢆ♧ࡍ㸬㸬ヨ㦂య 1-1 ࡢ᭱኱⪏ຊࡣ
ࡣ 21.7kN ࡛࠶࠶ࡾ㸪ヨ㦂య 1-2ࡢ᭱᭱኱⪏ຊࡣ 39.0kN3࡛࠶ࡗࡗࡓ㸬ྛヨ㦂㦂యࡢ㉁㔞ࡀࡑࡑࢀࡒࢀࢀ㸪ヨ㦂య 1-1 ࡣ 107.32kg㸪ヨ㦂య 1-2
1 ࡣ 129.95
5kg࡛࠶࠶ࡿࡢ࡛㸪⪏⪏ຊ㔜㔞ẚ㸦PP/W㸧ࡣヨ㦂య
య 1-1 ࡣ 20.6
6㸪ヨ㦂㦂య 1-2 ࡣ 30.6 ࡜࡞ࡿ㸬ࡍࡍࢃ࡞ࡕ㸪1 ẁࣈ࣮ࣞࢫヨヨ㦂య࡛࡛ࡣ㸪㖄┤⿵
⿵ᙉᮦࢆタࡅࡿ
ࡿࡇ࡜࡛㸪᭱኱኱⪏ຊࡣ 1.8 ಸቑຍຍࡋ㸪⪏ຊ㔜
㔜㔞ẚࡣ㸪1.5 ಸಸࡢᛶ⬟࡜࡞࡞ࡾ㸪㖄┤⿵ᙉ
ᙉ㒊ᮦࡢࡢ᭷ຠᛶࡀ♧♧ࡉࢀࡓ㸬

ᅗ 11. ヨ㦂య 1-1㸦㖄┤⿵ᙉᮦ࡞࡞ࡋ㸧

－ 77 －50ཧ⪃ᩥ⊩(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➨ 73 ᕳ㸪➨ 630 ྕ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኱ᗞ❶㸪ᑠᯘಇኵ㸪Ⲩ஭ ᬛ୍㸪“㔠ᒓࣃࢿࣝኳ஭ࡢ⪏㟈ᛶ࡟㛵ࡍࡿ◊✲㸦ࡑࡢ 11㸧ྞࡾୗࡆタഛࢆྵࡴኳ஭ࡢỈᖹຍຊ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➨ 34 ᕳ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➨ 35 ᕳ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㐀ᮦࡢⴠୗ஦ᨾ㜵Ṇ࢞࢖ࢻࣛ࢖ࣥ㸪2013 ᖺ 3 ᭶ 4 ᪥∧ሗ࿌᭩(8) ᯇᮏៅஓ㸪బ⸨බ❶㸪⸨㇂⩏ಙ㸪“㍍㔞ゅᙧ㗰⟶࡟ࡼࡿ⪏㟈ྞࡾኳ஭ᵓ㐀ࡢຊᏛⓗ≉ᛶ࡟㛵ࡍࡿ◊✲”㸪㏆␥኱ᏛᕤᏛ㒊◊✲ሗ࿌㸪No.47㸪(2013-12)㸪pp.49-54

4030
Ⲵ㔜(kN)

20
100-100-50-10050

100150ヨ㦂య1-2(㖄┤⿵ᙉᮦ䛒䜚)-20

ヨ㦂య1-1(㖄┤⿵ᙉᮦ䛺䛧)-30
ኚ఩(mm)

ᅗ 14. Ⲵ㔜-ኚ఩㛵ಀ෗┿ 8. ヨ㦂య 1-1 ࡢ⤊ᒁ≧ἣ㸦ࣈ࣮ࣞࢫᮦࡢᗙᒅ㸧෗┿ 9. ヨ㦂య 1-2 ࡢ⤊ᒁ≧ἣ㸦ࣈ࣮ࣞࢫᮦࡢᗙᒅ㸧⾲ 8. 1 ẁࣈ࣮ࣞࢫヨ㦂యࡢ⪏ຊ≉ᛶ
ヨ㦂యྡ

㖄┤

᭱኱⪏ຊ

㉁㔞

㔜㔞

⪏ຊ㔜㔞

⿵ᙉᮦ

P(kN)

M(kg)

W(kN)

ẚ P/W

ヨ㦂య 1-1

࡞ࡋ

21.7

107.32

1.05

20.6

ヨ㦂య 1-2

࠶ࡾ

39.0

129.951.27

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᭷ࡍࡿኳ஭ᵓ㐀ࢆᵓ⠏࡛ࡁࡓ㸬－ 78 －