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軽量角形鋼による耐震天井構造の開発
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ኳᵓ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 ᗈᓥᏛྡᩍᤵ*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 *ཎ✏ཷ 2014 ᖺ 5 ᭶ 12 ᪥ *1 ࠛ739-2116 ᮾᗈᓥᕷ㧗ᒇ࠺ࡵࡢ㎶ 1 ␒ E-Mail [email protected] *2 ࠛ733-0802 ᗈᓥᕷす༊୕ᮏ⏫ 2-24-24 㸬ᮦᩱᘬᙇヨ㦂 ᮏ◊✲࡛ࡣ㸪ゅᙧ㗰⟶ࡢࢥ࣮ࢼ࣮㒊࠾࠸࡚ࡋࡵᡂ ᙧࡼࡾᔐྜࡋࡓゅᙧ㗰⟶ࢆ⏝࠸ࡿ㸬ࡇࡢࡋࡵᡂᙧゅ ᙧ㗰⟶ࡣᅗ 1 ♧ࡍࡼ࠺࡞᩿㠃ᙧ≧࡛࠶ࡾ㸪࣮࣎ࢻ㢮࡞ ࡢ㠃ᮦࢆࢫࢡ࣮ࣜࣗࢿࢪࡼࡾࣅࢫṆࡵࡍࡿ㝿㸪ࢫ ࢡ࣮ࣜࣗࢿࢪඛ➃ࡢࣈࣞࢆపῶࡋ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 ≉ኳᮦࡢⴠୗࡣேⓗ⿕ᐖࡢ༴ 㝤ᛶࡀ㧗ࡃ㸪య⫱㤋ࡸබඹࡢ✵㛫ᵓ㐀≀ࡣᆅ㟈➼ 㑊㞴ሙᡤ࡞ࡿࡇࢁ࡛࠶ࡾᏳ࡞ሙᡤ࡛࡞ࡃ࡚ࡣ࡞ࡽ ࡞࠸㸬ࡑࡢࡓࡵ㸪⪏㟈ᛶ⬟ࢆ༑ศᢕᥱࡍࡿࡇࡀ㔜せ ࡛࠶ࡿ(2)-(4)㸬 ᮏ◊✲࡛ࡣࡇࢀࡲ࡛ྞࡾኳᵓ㐀ࡢ⪏㟈ᛶ⬟㛵ࡍ ࡿᇶ♏ⓗ≉ᛶࢆㄪᰝࡍࡿࡶ(5)㸪 ࡋࡵຍᕤࡼࡗ࡚ ᡂᙧࡉࢀࡓ㍍㔞ᙧ㗰⟶ࢆ⏝࠸࡚⪏㟈ᛶࢆྥୖࡉࡏࡓ᪂ᆺ ࡢᆺྞࡾኳᵓ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ࢆࡍࡿࡓࡵᚲ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ࡢࢹࢸ࣮ࣝࢆᨵ Ⰻࡍࡿࡇ࡛㸪ࡼࡾ㧗࠸⪏㟈ᛶࡢ㍍㔞⪏㟈ኳࢆᥦࡍ ࡿ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ࡣᡂᙧ๓ࡢࢥࣝࡼ ࡾษࡾฟࡋ࡚〇సࡋࡓヨ㦂య 1㸪෭㛫ຍᕤᡂᙧᚋࡢ㒊ᮦ ࡢࣇࣛࢵࢺ㠃ࡼࡾษࡾฟࡋ࡚〇సࡋࡓヨ㦂య 2㸪෭㛫ຍ ᕤᡂᙧᚋࡢ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 [email protected] *3 ࠛ739-2103 ᮾᗈᓥᕷ㙾ᒣ 1-4-1 － 73 － 2241)ᇶ࡙ࡃᘬ ᘬᙇヨ㦂ࢆᐇ ᐇࡋ㸪≉ᛶࢆ ࢆẚ㍑ࡋࡓ㸦⾲ ⾲ 1 ཧ↷㸧 ཧ 㸬ヨ㦂య యࡢᯈཌࡣ 1.2 2mm ࡛࠶ࡾ㸪 㸪ᅗ 2 ♧ࡍ ࡍⷧ ᯈᮦ ᮦᩱ⏝ࡉ ࡉࢀࡿ 5 ྕヨ㦂 㦂∦ࡼࡾᘬ ᘬᙇヨ㦂ࢆ⾜ࡗ ࡗࡓ㸬 ヨ㦂 㦂⏝࠸ࡓ㗰 㗰ᮦࢥࣝࡢᮦ ᮦᩱ᳨ᰝド᫂᭩ ᭩㸦࣑ࣝࢩ࣮ࢺ㸧 グ グ㍕ࡉࢀ࡚࠸ ࠸ࡿᏛᡂศࡢ ࡢ≉ᛶ್ࢆ⾲ 2 ♧ࡍ㸬࠸ ࠸ࡎ ࢀࡶ JIS つ᱁ࢆ ࢆ㐺ྜࡋ࡚࠸ࡿ ࡿ㸬 ⾲ 1. ᘬᙇヨ ヨ㦂య୍ぴ ヨ ヨ㦂యྡ ヨ ヨ㦂యࡢ〇స᪉ ᪉ἲ ᘬᙇ ᙇヨ㦂య 1 ᡂ ᡂᙧ๓ࡢࢥࣝ ࣝࡼࡾษࡾฟࡋ࡚〇సࡋࡓヨ㦂 㦂య ᅗ 3. ᘬᙇヨ㦂య 1 ࡢⲴ㔜㸫ኚ 㛵ಀ ෭ ෭㛫ຍᕤᡂᙧᚋ ᚋࡢ㒊ᮦࡢࣇࣛࢵࢺ㠃ࡼࡾษࡾ ࡾฟ ᘬᙇ ᙇヨ㦂య 2 ࡋ ࡋ࡚〇సࡋࡓヨ ヨ㦂య ෭ ෭㛫ຍᕤᡂᙧᚋ ᚋࡢ㒊ᮦࡢࣅ࣮ ࣮ࢻ㠃ࡼࡾษࡾฟ ฟࡋ ᘬᙇ ᙇヨ㦂య 3 ࡚ ࡚〇సࡋࡓヨ㦂 㦂య 㛵ಀ ᅗ 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 ࢥࣝᑍἲ ㉁㔞 (m mm×mm×mm) (kg) 1.2×1219×844 9670 㛵ಀ ᅗ 5. ᘬᙇヨ㦂య 3 ࡢⲴ㔜㸫ኚ Ꮫᡂศ ศ(%) C Si n Mn P S ×10-3 ×10-2 ×10 0-2 ×10-3 ×10-3 × 59 2.5 19 9 10 8 ᅗ 3㹼ᅗ 5 ᘬᙇヨ㦂య 1 ࡽᘬᙇヨ㦂 㦂య 3 ࡢⲴ㔜 㔜㸫 ኚ 㛵ಀࢆ♧ࡍ ࡍ㸬ࡲࡓ㸪ᅗ 6 ᘬᙇヨ㦂య య 1-1㸪ᘬᙇヨ ヨ㦂 య 2-1㸪ヨ㦂య 3-1 3 ᑐࡍࡿᛂ ᛂຊᗘ㸫ࡦࡎ ࡎࡳᗘ㛵ಀࢆẚ ẚ㍑ ࡍࡿ㸬 ᅗ 6. ᛂຊᗘ㸫 㸫ࡦࡎࡳᗘ㛵ಀ ಀ － 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 ࡛ࡣ 414N/mm2 ࡛࠶ࡗࡓ㸬ᘬᙇᙉࡉࡣᡂᙧ๓ࡢࢥࣝࡼࡾษ ࡾฟࡋ࡚〇సࡋࡓᘬᙇヨ㦂య 1 ࡼࡾࡶ㸪෭㛫ຍᕤᡂᙧᚋ ࡢ㒊ᮦࡢࣇࣛࢵࢺ㠃ࡼࡾษࡾฟࡋ࡚〇సࡋࡓᘬᙇヨ㦂య 2㸪ࡉࡽ෭㛫ຍᕤᡂᙧᚋࡢ㒊ᮦࡢࣅ࣮ࢻ㠃ࡼࡾษࡾฟࡋ ࡚〇సࡋࡓᘬᙇヨ㦂య 3 ࡢ㡰ࡁࡃ࡞ࡿࡇࡀࢃࡿ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/mm2 ࡛ ࠶ 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࠸ࡇࡀ☜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ᘬᙇᙉࡉࡀࡁ࠸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♏ࢹ࣮ࢱ ࢆᚓࡿࡓࡵ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ࡇࡢࡁᯈཌࡣ 1.2mm㸪 1.0mm㸪0.8mm ࡢ 3 ✀㢮ࡋ㸪ᯈཌࢆኚࡉࡏࡿࡇ࡛ ᖜཌẚࢆኚࡉࡏࡓሙྜࡢᅽ⦰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 2 2 N/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 E 2 N/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 G Q 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 ◚᩿≧ἣ ᩿㠃ḟ༙ᚄ ᖜཌẚ ᩿㠃ಀᩘ ᯈཌ ᖜ 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ࡀࡁࡃ࡞ࡾ㸪ᅽ⦰ᙉᗘࡀᑠࡉࡃ࡞ࡿࡇࡀࢃࡿ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୰ኸࡑࢀࡒࢀ㈞ࡗࡓࡦࡎࡳࢤ࣮ࢪࡢ್ࡢ ᖹᆒ್ࡽồࡵࡓ᭱Ⲵ㔜ࡢࡦࡎࡳᗘࡶྜࢃࡏ࡚♧ࡍ㸬 ྛヨ㦂యࡢᅽ⦰ᙉᗘᑐࡍࡿᖜཌẚࡢᙳ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ࡑࡢ್ᑐࡍࡿᅽ⦰ᙉᗘࡢኚ⋡ࢆ♧ࡍ㸬⾲ࡼࡾ㸪 ᯈཌࡀ 1.2mm ࡽ 0.8mm ῶᑡࡍࡿ㸪ᅽ⦰ᙉᗘࡣ ⣙ 0.69 ಸ࡞ࡿࡇࡀࢃࡿ㸬 ヨ㦂య A ࠾ࡅࡿ⤊ᒁ≧ἣࢆ┿ 4㹼┿ 6 ♧ࡍ㸬 ࡍ࡚ࡢヨ㦂య࠾࠸࡚㸪᭱⪏ຊࢆ㉺࠼ࡁࡃኚᙧࡋ ࡚ࡶ㸪ࡋࡵ㒊ศࡣࡋࡗࡾᔐྜࡉࢀ࡚࠾ࡾ㸪ࡋࡵ 㒊ศࡀࡣࡎࢀࡿࡇࡣ࡞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-1 250 200 A-2 A-3 150 100 50 0 0 1 2 3 4 5 6 7 8 ኚ(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-1 250 200 B-2 B-3 150 100 50 0 0 1 2 3 4 5 6 7 8 ኚ(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) 300 250 ┿ 6. ヨ㦂య A-3 ⤊ᒁ≧ἣ㸦ᯈཌ 0.8mm㸧 200 y = -4.7803x + 467.24 150 100 50 0 30 35 40 45 50 ᖜཌẚb/t 55 60 ௨ୖࡢᘬᙇヨ㦂㸪ᅽ⦰ヨ㦂ࡢ⤖ᯝࡽ㸪ᯈཌ 1.2mm ࡢ ࡋࡵᡂᙧ㍍㔞ゅᙧ㗰⟶ࢆタィ⏝࠸ࡿሙྜࡢᮦᩱᇶ‽ ᙉᗘࡣ➃ᩘࢆษࡾᤞ࡚㸪F=280N/mm2 ࡍࡿࡇࡋࡓ㸬 ࡲࡓ㸪㗰ᮦࡢࣖࣥࢢಀᩘࡣᘬᙇヨ㦂ࡼࡿ᭱ᑠ್࡛࠶ࡿ 1.69×105N/mm2 ࡢ್ࢆ⏝࠸ࡿࡇࡋࡓ㸬 ᅗ 10. ᖜཌẚࡢᙳ㡪 － 76 － 㸬⪏㟈ኳᵓ㐀 㐀㸦ࡪ࠺Ჴ㸧 ẁࣈ࣮ࣞ ࣮ࢫヨ㦂య ᮏ◊✲࡛ࡣ㸪 ᮏ ࢆ 3m ௨ୖࡢኳ ኳᵓ㐀ࢆᑐ ᑐ㇟ ኳ㧗ࡉࢆ ࡋ࡚㍍㔞ゅᙧ ᙧ㗰⟶ࡼࡿ⪏ ⪏㟈ኳᵓ㐀ࢆᥦࡍࡿ㸬 ┿ 7 1 ẁࣈࣞ ࣮ࣞࢫ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 ✀ู Ỉ Ỉᖹᮦ ࣈࣞ ࣮ࣞࢫᮦ 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’ ᑍἲ ἲ࣭ᯈཌ 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 cm4 Ix 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 - 0.925 0.0682 1 ẁࣈ࣮ࣞࢫ ࢫ࠾ࡅࡿヨ㦂 㦂యࡣ㖄┤⿵ ⿵ᙉ㒊ᮦࡢ࡞࠸ ࠸ヨ 㦂య య 1-1㸦ᅗ 11 1 ཧ↷㸧࠾ࡼࡧ ࡧ㖄┤⿵ᙉ㒊 㒊ᮦࡢ࠶ࡿヨ㦂 㦂య 1-2 2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Ⲵ ຍຊヨ㦂ࡣἜ ຍ Ἔᅽࢪࣕࢵ࢟ ࡼࡗ࡚㸪Ỉ Ỉᖹ᪉ྥṇ㈇ ㈇ ␒⧞ ⧞ࡾ㏉ࡋ㍕Ⲵ Ⲵࢆస⏝ࡉࡏ㸪ኳ㧗ࡉᑐࡍࡿỈᖹ ᖹኚ 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1/15rad d ࡞ࡿࡼ࠺ቑࡉࡏ㸦ᅗ 㸪᭱⤊ 13 ཧ↷㸧 ⤊ࢧࢡࣝࡣヨ ヨ㦂యࡀ⤊ᒁ ᒁ≧ἣ⮳ࡿࡲ ࡲ࡛ ⓗຍຊࢆ⾜ࡗ ࡗࡓ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 ᗙᒅ ࡍࡿࡇ࡛᭱ ⪏ຊ࡞ࡿ◚ ◚ቯᛶ≧࡛࠶ࡗࡓ㸦┿ 8㸪 8 ┿ ┿ 9 ཧ↷㸧 㸬⾲ 8 1 ẁࣈࣞ ࣮ࣞࢫヨ㦂య యࡢ⪏ຊ≉ᛶࢆ ࢆ♧ ࡍ㸬 㸬ヨ㦂య 1-1 ࡢ᭱⪏ຊࡣ ࡣ 21.7kN ࡛࠶ ࠶ࡾ㸪ヨ㦂య 1-2 ࡢ᭱ ᭱⪏ຊࡣ 39.0kN 3 ࡛࠶ࡗ ࡗࡓ㸬ྛヨ㦂 㦂యࡢ㉁㔞ࡀࡑ ࡑࢀ ࡒࢀ ࢀ㸪ヨ㦂య 1-1 ࡣ 107.32kg㸪ヨ㦂య 1-2 1 ࡣ 129.95 5kg ࡛࠶ ࠶ࡿࡢ࡛㸪⪏ ⪏ຊ㔜㔞ẚ㸦P P/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ࡍ ࡍࢃ࡞ࡕ㸪1 ẁࣈ࣮ࣞࢫヨ ヨ㦂 య࡛ ࡛ࡣ㸪㖄┤⿵ ⿵ᙉᮦࢆタࡅࡿ ࡿࡇ࡛㸪᭱ ⪏ຊࡣ 1.8 ಸ ቑຍ ຍࡋ㸪⪏ຊ㔜 㔜㔞ẚࡣ㸪1.5 ಸ ಸࡢᛶ⬟࡞ ࡞ࡾ㸪㖄┤⿵ᙉ ᙉ㒊 ᮦࡢ ࡢ᭷ຠᛶࡀ♧ ♧ࡉࢀࡓ㸬 ᅗ 11. ヨ㦂య 1-1㸦㖄┤⿵ᙉᮦ࡞ ࡞ࡋ㸧 － 77 － 50 ཧ⪃ᩥ⊩ (1) ᪥⤒࣮࢟ࢸࢡࢳࣗ⦅㸪“ᮾ᪥ᮏ㟈⅏ࡢᩍカ 㒔 ᕷ࣭ᘓ⠏⦅”㸪᪥⤒ BP ♫㸪(2011-6) (2) ᑠᯘಇኵ㸪⏤㝯⾜㸪Ⲩᬛ୍㸪“㗰〇ኳୗᆅࢆ⏝ ࠸ࡓྞࡾኳࡢ⪏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⠏ᏛᏛ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ᒓࣃࢿࣝኳࡢ⪏㟈ᛶ 㛵ࡍࡿ◊✲㸦ࡑࡢ 11㸧ྞࡾୗࡆタഛࢆྵࡴኳࡢ Ỉᖹຍຊヨ㦂”㸪᪥ᮏᘓ⠏ᏛᏛ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“ྞࡾኳᵓ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“ྞࡾኳᵓ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㐀ᮦࡢᏳᛶホ౯ཬࡧⴠୗᨾ 㜵Ṇ㛵ࡍࡿ≉ูㄪᰝጤဨ㸪ኳ➼ࡢ㠀ᵓ㐀ᮦࡢⴠ ୗᨾ㜵Ṇ࢞ࢻࣛࣥ㸪2013 ᖺ 3 ᭶ 4 ᪥∧ሗ࿌᭩ (8) ᯇᮏៅஓ㸪బ⸨බ❶㸪⸨㇂⩏ಙ㸪“㍍㔞ゅᙧ㗰⟶ࡼ ࡿ⪏㟈ྞࡾኳᵓ㐀ࡢຊᏛⓗ≉ᛶ㛵ࡍࡿ◊✲”㸪㏆ ␥ᏛᕤᏛ㒊◊✲ሗ࿌㸪No.47㸪(2013-12)㸪pp.49-54 40 30 Ⲵ㔜(kN) 20 10 0 -100 -50 -10 0 50 100 150 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 39.0 129.95 1.27 30.6 㸬ࡲࡵ ᮏ◊✲࡛ࡣ㸪ࡋࡵᡂᙧࡼࡿ㍍㔞ᙧ㗰⟶ࡢᮦᩱᘬᙇ ヨ㦂ཬࡧᅽ⦰ヨ㦂ࢆ⾜࠸㸪ᮦᩱ≉ᛶࢆᢕᥱࡋࡓ㸬ࡑࡋ࡚ ⪏㟈ᛶࢆྥୖࡉࡏࡓ᪂ᆺࡢᆺྞࡾኳᵓ㐀㸦⪏㟈ᵓ㐀 ᆺࡪ࠺Ჴ㸧ࢆᥦࡋ㸪᥋ྜ㒊ࡢࢹࢸ࣮ࣝᑐࡍࡿ⪏ 㟈ᛶ⬟ࢆ᳨ウࡋࡓ㸬ࡑࡢ⤖ᯝ㸪㍍㔞࡛㧗࠸⪏㟈ᛶࢆ᭷ࡍ ࡿኳᵓ㐀ࢆᵓ⠏࡛ࡁࡓ㸬 － 78 －