U.D.C 620.11.179.16
㉸㡢Ἴఏ㏿ᗘࡼࡿ࠶ᕤ࣮ࣥ࢝ࡢᗘホ౯ᡭἲࡢ᳨ウ
㕥ᮌ ᑗ
㸨๓ཎ ⪽
㸨ఀ⸨ ṇ᠇
㸨 せ ⣙㸸 ㉸㡢Ἴヨ㦂ࡼࡾ࣮ࣥ࢝࣎ࣝࢺ㢌㒊ࢥࣥࢡ࣮ࣜࢺ⾲㠃㛫ࡢ㉸㡢Ἴఏ㏿ᗘࢆ ᐃࡋ࡚㔠ᒓ⣔࠾ࡼࡧ᥋╔⣔࠶ᕤࣥ ࣮࢝࠾ࡅࡿᕤⰋࡢ᳨ฟࡘ࠸᳨࡚ウࢆ⾜ࡗࡓࠋࡉࡽ㸪᥋╔⣔࠶ᕤ࣮ࣥ࢝ࡢ㍕Ⲵ๓ᚋ࠾ࡅࡿ㉸㡢Ἴఏ㏿ᗘࡢ 㐪࠸ࡘ࠸࡚ࡶ᳨ウࢆ⾜ࡗࡓࠋࡑࡢ⤖ᯝ㸪࠶ᕤ࣮ࣥ࢝ࡢ⦆ࡳࡸሸ㊊ࢆᶍᨃࡋࡓᕤⰋࡢ᳨ฟ㸪ᕤⰋ࣭⤒ᖺຎ ࡼࡿᘬᙇ⪏ຊࡢ㊊࣭పୗࢆᐃࡋࡓṧᏑ⪏ຊࡢ᥎ᐃࡽᗘࢆホ౯ࡍࡿࡇࡀྍ⬟࡛࠶ࡿࡇࡀ♧၀ࡉࢀࡓࠋ 㺕㺎㺺㺎㺢㺼㸸 ࠶ᕤ࣮ࣥ࢝㸪㠀◚ቯ᳨ᰝ㸪㉸㡢Ἴఏ㏿ᗘ㸪ᕤⰋ㸪ṧᏑ⪏ຊ ┠ ḟ㸸 㸬ࡣࡌࡵ 㸬㉸㡢Ἴఏ⤒㊰ࡢ᳨ド 㸬ᕤⰋࡢ᳨ฟ 㸬ࡲࡵ 㸬ṧᏑ⪏ຊࡢ᥎ᐃ 㸬 ࡣࡌࡵ ᪤タᵓ㐀≀࡛ࡣ㸪ᖏタഛࢆタ⨨ࡍࡿࡓࡵ࠶ ᕤ࣮ࣥ࢝ࡀᩘከࡃ⏝ࡉࢀ࡚ࡁࡓࠋࡲࡓ㸪ᵓ㐀≀ࡢ ⿵ಟ࣭⿵ᙉ࠾࠸࡚ᖏタഛࡢ᭦᪂క࠸㸪࠶ᕤ ࣮ࣥ࢝ࢆ᪂つᕤࡍࡿᶵࡶከࡃ࡞ࡗ࡚࠸ࡿࠋ➲ Ꮚࢺࣥࢿࣝࡢኳᯈⴠୗᨾࢆཷࡅ㸪᪤タ࠶ᕤ ࣮ࣥ࢝ࡢⅬ᳨ࢆᐇࡍࡿࡇࡢ㔜せᛶࡀᗈࡃㄆ㆑ࡉࢀ ࡓࡀ㸪ᩘከࡃᏑᅾࡍࡿ࠶ᕤ࣮ࣥ࢝ࡢᗘࢆຠ ⋡ⓗࡘ㐺ษホ౯ࡍࡿᡭἲࡣ☜❧ࡉࢀ࡚࠸࡞࠸ࡢࡀ ⌧≧࡛࠶ࡿ 㸪 ࠋ ࠶ᕤ࣮ࣥ࢝ࡢⅬ᳨ᡭἲࡣ㸪㏆᥋┠ど㸪ᡴ㡢 ࠾ࡼࡧゐデࡼࡗ࡚␗ᖖࡢ᭷↓ࢆ☜ㄆࡍࡿᡭἲࡸᘬᢤ ヨ㦂ࡼࡾᘬᙇ⪏ຊࢆ ᐃࡍࡿᡭἲࡀ࠶ࡿࠋࡋࡋ㸪 ㏆᥋┠ど㸪ᡴ㡢࠾ࡼࡧゐデࡣ㸪࠶ᕤ࣮ࣥ࢝ࡢ⦆ ࡳࡸ⬺ⴠ㸪ᦆയࡀ࡞࠸ࡇࢆຠ⋡ⓗ☜ㄆࡍࡿࡇࡀ ࡛ࡁࡿࡀ㸪ᡤせࡢᘬᙇ⪏ຊ௨ୗࡢ࠶ᕤ࣮ࣥ࢝ࢆ ุᐃࡍࡿࡇࡀᅔ㞴࡛࠶ࡿࠋࡲࡓ㸪ຍຊヨ㦂ࡸᘬᢤヨ 㦂ࡼࡿᘬᙇ⪏ຊ ᐃࡣ㸪┤᥋㸪࠶ᕤ࣮ࣥ࢝ࢆ ㍕Ⲵࡍࡿࡇ࡛࠶ࡿ⛬ᗘᐃ㔞ⓗホ౯࡛ࡁࡿࡀ㸪ゐデ ➼ࡼࡾࡶᡭ㛫ࢆせࡋ㸪ᡤせࡢᘬᙇ⪏ຊࢆಖ᭷ࡋ࡚࠸࡞ ࠸ሙྜ㸪ᵓ㐀≀⮬యᦆയࢆ࠼࡚ࡋ࡞࠺࡞ࡢၥ㢟 ࡀ࠶ࡿࠋࡢⅬ᳨ᡭἲࡋ࡚㟁☢ࣃࣝࢫἲ 㸪⾪ᧁᙎ ᛶἼἲ 㸪ࣥࣃࣝࢫࣁ࣐࣮ࣥຍ㏿ᗘィ ࡼࡿ᪉ἲ ࡀ᳨ウࡉࢀ࡚࠸ࡿࡀ㸪ࡑࡢከࡃࡣ㐺⏝ྍ⬟ᛶࡢ᳨ド࡞ ᇶ♏ⓗ᳨ウࡢẁ㝵࡛࠶ࡾ㸪ᐇ⏝⮳ࡗ࡚࠸࡞࠸ࠋ ࡑࡇ࡛➹⪅ࡽࡣ㸪࠶ᕤ࣮ࣥ࢝ࡢᗘࢆຠ⋡ ⓗࡘ㐺ษホ౯ࡍࡿᡭἲࢆ☜❧ࡍࡿࡇࢆ┠ⓗࡋ ࡚㸪 ᐃࡀẚ㍑ⓗᐜ࡛᫆ࡁ࡞㈨ᶵᮦࢆᚲせࡏࡎ㸪 ࠶ᕤ࣮ࣥ࢝ࡢᛶࡁࡃᙳ㡪ࡍࡿࢥࣥࢡࣜ ࣮ࢺࡢ≧ែࡶホ౯ྍ⬟࡛࠶ࡿ㉸㡢Ἴヨ㦂╔┠ࡋ㸪࠶ ᕤ࣮ࣥ࢝ࢥࣥࢡ࣮ࣜࢺ⾲㠃ࡢ㉸㡢Ἴఏ㏿ᗘ ࡘ࠸᳨࡚ウࢆ⾜ࡗࡓࠋᮏ✏ࡣ㸪㉸㡢Ἴఏ㏿ᗘࡼ ࡾ㸪⦆ࡳࡸሸ㊊ࢆᶍᨃࡋࡓᕤⰋࡢ᳨ฟ㸪ᕤ ᅗ㸯 ㉸㡢Ἴఏ㏿ᗘ ᐃࡢᴫᛕᅗ ┿㸯 ᥋╔⣔࣮ࣥ࢝ࡢࣅࢽ࣮ࣝ⿕そ Ⰻ࣭⤒ᖺຎࡼࡿᘬᙇ⪏ຊࡢ㊊࣭పୗࢆᐃࡋ ࡓṧᏑ⪏ຊࡢ᥎ᐃ㸪㉸㡢Ἴఏ⤒㊰ࡢ᳨ドࡘ࠸࡚ᐇ 㦂ⓗ᳨ウࢆ⾜࠸㸪㉸㡢Ἴヨ㦂ᶵࡢ࠶ᕤ࣮ࣥ࢝ࡢ ㄪᰝ࠾ࡅࡿ㐺⏝ᛶࡘ࠸᳨࡚ウࡋࡓ⤖ᯝࢆሗ࿌ࡍࡿ ࡶࡢ࡛࠶ࡿࠋ 㸬 ᕤⰋࡢ᳨ฟ ᐇ㦂ᴫせ ➨୍ẁ㝵ࡋ࡚ᮏᐇ㦂࡛ࡣ㸪ᕤⰋࡢ࠶ ᕤ࣮ࣥ࢝ࢆពᅗⓗస〇ࡋ࡚㸪㉸㡢Ἴ ᐃჾࢆ⏝ ࠸࡚࣮ࣥ࢝㢌㒊ࢥࣥࢡ࣮ࣜࢺ⾲㠃㛫ࡢ㉸㡢Ἴఏ ㏿ᗘࢆ ᐃࡋ㸪ᕤⰋࡢ࠶ᕤ࣮ࣥ࢝ࡢᢳฟࡀ ྍ⬟࡛࠶ࡿࡢ☜ㄆࢆ⾜ࡗࡓࠋࡇࡇ࡛㸪ᕤⰋࡣ ᐇᕤ࡛Ⓨ⏕ࡢྍ⬟ᛶࡀ࠶ࡿ㇟ࡋ࡚㸪㔠ᒓ⣔ࡣ㔠 ᒓᣑᙇࡢຠᯝࡀᙅࡃ⦆ࡴ≧ែ㸪᥋╔⣔ࡣᏍෆ᥋╔ 䜰䞁䜹䞊㛗 ๐Ꮝᚄ ๐Ꮝ㛗 䛒䛸ᕤ䜰䞁䜹䞊 䠄M8㔠ᒓ⣔䠈᥋╔⣔䠅 ᐃ㊥㞳 ㉸㡢Ἴ ᐃჾ Ⓨ᥈ゐᏊ ཷ᥈ゐᏊ 䝁䞁䜽䝸䞊䝖ቨ ᢏ⾡◊✲ᡤᅵᮌ◊✲ࢢ࣮ࣝࣉ * 技術研究所 土木研究グループ U.D.C 620.11.179.16超音波伝播速度によるあと施工アンカーの健全度評価手法の検討
鈴木 将充
＊前原 聡
＊伊藤 正憲
＊⾲㸯 ヨ㦂యㅖඖ ᅗ㸰 ㉸㡢Ἴఏ㏿ᗘ㸦㔠ᒓ⣔ 1R㹼1R㸧 ࡢሸ㊊ࡀ࠶ࡿ≧ែࢆᑐ㇟ࡋࡓࠋᅗ㸯㉸㡢Ἴఏ ㏿ᗘ ᐃ᪉ἲࡢᴫᛕᅗࢆ♧ࡍࠋ᥈ゐᏊ࡛Ⓨཷಙࡍࡿ ㉸㡢Ἴࡢබ⛠࿘Ἴᩘࡣ N+] ࡛ᐇ㦂ࢆ⾜ࡗࡓࠋ ᐇ㦂᪉ἲ ⾲㸯ヨ㦂యࡢㅖඖࢆ♧ࡍࠋヨ㦂యࡣ㸪㔠ᒓ⣔㔠ᒓ ᣑᙇ࣮ࣥ࢝᭷ᶵ⣔᥋╔ࡢ᥋╔⣔࣮ࣥ࢝ࢆཌࡉ PP ࡢࢥࣥࢡ࣮ࣜࢺቨᕤࡋࡓࠋࢥࣥࢡ࣮ࣜࢺቨࡢ 㓄ྜࡣ :& 㸪VD 㸪: NJP㸪㧗⅔ࢭ࣓ ࣥࢺ % ✀⏝㸪ᅽ⦰ᙉᗘȪࡣ 1PP࡛࠶ࡗࡓࠋ㔠 ᒓ⣔࡛ࡣ㸪⦆ࡳࡸ⬺ⴠࢆᶍᨃࡍࡿࡓࡵ㸪๐Ꮝᚄࢆ᪤ᐃ ࡢ๐Ꮝᚄࡢ PP ࡼࡾࡶࡁࡃࡋ㸪ゐデ࡚᫂ࡽ ⦆ࡳࡀ࠶ࡿࡇࡀุู࡛ࡁࡿᕤⰋ㸦๐Ꮝᚄ PP㸧 ࢆస〇ࡋࡓࠋ᥋╔⣔࡛ࡣ㸪᥋╔ࡢሸ㊊ࡼࡿ✵ 㝽ࢆᶍᨃࡍࡿࡓࡵ㸪࠶ᕤ࣮ࣥ࢝ࡢᐃ╔㒊ࣅࢽ ࣮ࣝ〇ࢳ࣮ࣗࣈࢆ⿕そࡉࡏ㸪᥋╔㠃✚ࢆῶᑡࡉࡏࡓࡶ ࡢࢆస〇ࡋࡓࠋ┿㸯ࣅࢽ࣮ࣝ〇ࢳ࣮ࣗࣈࡢ⿕そ≧ ἣࢆ♧ࡍࠋ࡞࠾㸪᥋╔⣔࣮ࣥ࢝ࡢሙྜ㸪✵㝽 ࢆᶍ ᨃࡋࡓヨ㦂య࠾࠸࡚ࡶࢥࣥࢡ࣮ࣜࢺ࣮ࣥ࢝࣎ࣝ ࢺࡢ୍㒊ࡀ᭷ᶵ⣔᥋╔࡛᥋╔ࡉࢀ࡚࠾ࡾ㸪ゐデ࡛ࡣ ⦆ࡳࡢุูࡀฟ᮶࡞࠸≧ែ࡛࠶ࡗࡓࠋྛヨ㦂య࠾࠸ ࡚㉸㡢Ἴఏ㏿ᗘࡢ ᐃ㊥㞳ࢆ 㸪㸪PP ࡋ㸪 ᅗ㸱 ㉸㡢Ἴఏ㏿ᗘ㸦㔠ᒓ⣔ 1R㹼1R㸧 Ⓨ᥈ゐᏊࢆ࣮ࣥ࢝࣎ࣝࢺࡢ㢌㒊㸪ཷಙⓎ᥈ゐ Ꮚࢆࢥࣥࢡ࣮ࣜࢺ⾲㠃タ⨨ࡋ࡚ ᐃࡋࡓࠋࡲࡓ㸪ẚ ㍑ᑐ㇟ࡋ࡚ࢥࣥࢡ࣮ࣜࢺ⾲㠃㛫ࡢ㉸㡢Ἴఏ㏿ᗘࢆ ᐃࡋࡓࠋ ᐇ㦂⤖ᯝ ᅗ㸰㹼ᅗ㸳㉸㡢Ἴఏ㏿ᗘࡢ ᐃ⤖ᯝࢆ♧ࡍࠋ࠶ ᕤ࣮ࣥ࢝ࡢ✀㢮➼㛵ࢃࡽࡎ㉸㡢Ἴఏ㏿ᗘࡣ㸪 ᐃ㊥㞳ࡀ▷࠸ᑠࡉࡃ࡞ࡿഴྥࢆ♧ࡋࡓࠋࢥࣥࢡ ࣮ࣜࢺ⾲㠃㛫࠾࠸࡚ࡶྠᵝ ᐃ㊥㞳ࡀ▷࠸ᑠ ࡉࡃ࡞ࡿࡇࢆ☜ㄆࡋ࡚࠸ࡿࠋࡇࢀࡣ㸪 ᐃ㊥㞳ࡀ㛗 ࡃ࡞ࡿࡘࢀ࡚㉸㡢Ἴࡀࢥࣥࢡ࣮ࣜࢺෆ㒊ࢆఏࡋ᫆ ࡃ࡞ࡿࡓࡵ㸪ࢥࣥࢡ࣮ࣜࢺࡢ⾲ᒙෆ㒊ࡢရ㉁ࡢ㐪࠸ ࡀᙳ㡪ࡋࡓࡶࡢ⪃࠼ࡽࢀࡿࠋ 㔠ᒓ⣔࣮ࣥ࢝ࡢᕤⰋࡢ㉸㡢Ἴఏ㏿ᗘ ࡣ᫂☜࡞㐪࠸ࡀ♧ࡉࢀࡓࠋࡇࡢせᅉࡋ࡚⦆ࡳࡸ⬺ⴠ ࡢࡼ࠺࡞ᕤⰋ࡛ࡣ㸪㉸㡢Ἴࡀ㔠ᒓ⣔࣮ࣥ࢝ࡽ ࢥࣥࢡ࣮ࣜࢺ⾲㠃ఏࡋ㞴ࡃ࡞ࡿࡓࡵ⪃࠼ࡽࢀࡓࠋ ࡲࡓ㸪๐Ꮝ㛗 PP ࡢ 1R㹼1R ࡛ࡣ㸪 ᐃ㊥㞳ࡀ㛗 ࡃ࡞ࡿࡘࢀ࡚ᕤⰋࡢᕪࡶࡁࡃ࡞ࡿࡀ㸪 ๐Ꮝ㛗 PP ࡢ 1R㸪1R ࡛ࡣ ᐃ㊥㞳ࡀ㛗ࡃ࡞ࡿ ᕤⰋࡢᕪࡀⱝᖸᑠࡉࡃ࡞ࡗࡓࠋࡇࡢ⤖ᯝࡼ No. グྕ ✀㢮 䜰䞁䜹䞊ᚄ 䜰䞁䜹䞊㛗(mm) ๐Ꮝ㛗(mm) ๐Ꮝᚄ(mm) ഛ⪃ 1 㔠ᒓ⣔-M8-50-ձ 2 㔠ᒓ⣔-M8-50-ղ 3 㔠ᒓ⣔-M8-50-ճ 4 㔠ᒓ⣔-M8-50-ᕤⰋձ 5 㔠ᒓ⣔-M8-50-ᕤⰋղ 6 㔠ᒓ⣔-M8-50-ᕤⰋճ 7 㔠ᒓ⣔-M8-100-ձ 9 8 㔠ᒓ⣔-M8-100-ᕤⰋձ 10.5 ᕤⰋ䠄⦆䜏䠈⬺ⴠ䠅 9 ᥋╔⣔-M8-80-ձ 10 ᥋╔⣔-M8-80-ղ 11 ᥋╔⣔-M8-80-✵㝽10 䝡䝙䞊䝹㛗10mm䠄✵㝽12.5䠂䠅 12 ᥋╔⣔-M8-80-✵㝽20 䝡䝙䞊䝹㛗20mm䠄✵㝽25.0䠂䠅 13 ᥋╔⣔-M8-80-✵㝽30 䝡䝙䞊䝹㛗30mm䠄✵㝽37.5䠂䠅 14 ᥋╔⣔-M8-80-✵㝽40 䝡䝙䞊䝹㛗40mm䠄✵㝽50.0䠂䠅 15 ᥋╔⣔-M8-50-ձ 16 ᥋╔⣔-M8-50-ղ 17 ᥋╔⣔-M8-50-✵㝽10 䝡䝙䞊䝹㛗10mm䠄✵㝽20.0䠂䠅 18 ᥋╔⣔-M8-50-✵㝽20 䝡䝙䞊䝹㛗20mm䠄✵㝽40.0䠂䠅 19 ᥋╔⣔-M8-50-✵㝽30 䝡䝙䞊䝹㛗30mm䠄✵㝽60.0䠂䠅 20 ᥋╔⣔-M8-50-✵㝽40ձ 21 ᥋╔⣔-M8-50-✵㝽40ղ ✵㝽䜢ᶍᨃ䛩䜛䛯䜑䜰䞁䜹䞊䛻䝡䝙䞊䝹䝏䝳䞊䝤䜢⿕そ ✵㝽ẚ⋡䠖䝡䝙䞊䝹㛗/๐Ꮝ㛗䠄䠂䠅 ᥋╔⣔ M8 100 80 10.5 50 12 䝡䝙䞊䝹㛗40mm䠄✵㝽80.0䠂䠅 㔠ᒓ⣔ M8 70 50 9 10.5 ᕤⰋ䠄⦆䜏䠈⬺ⴠ䠅 120 100 1000 1500 2000 2500 3000 3500 4000 4500 0 100 200 300 ㉸㡢 Ἴఏ ㏿ ᗘ䠄 m/ s 䠅 ᐃ㊥㞳䠄mm䠅 䝁䞁䜽䝸䞊䝖⾲㠃 (No.1䡚3ᖹᆒ್) (No.1) (No.2) (No.3) ᕤⰋ(No.4䡚6ᖹᆒ್) ᕤⰋ(No.4) ᕤⰋ(No.5) ᕤⰋ(No.6) 1000 1500 2000 2500 3000 3500 4000 4500 0 100 200 300 ㉸㡢 Ἴఏ ㏿ ᗘ 䠄 m/ s 䠅 ᐃ㊥㞳䠄mm䠅 䝁䞁䜽䝸䞊䝖⾲㠃 (No.7) ᕤⰋ(No.8)
ᅗ㸲 ㉸㡢Ἴఏ㏿ᗘ㸦᥋╔⣔ 1R 㹼1R㸧 ᅗ㸳 ㉸㡢Ἴఏ㏿ᗘ㸦᥋╔⣔ 1R㹼1R㸧 ⾲㸰 ヨ㦂యㅖඖ ࡾ㸪㉸㡢Ἴఏ㏿ᗘ࡛ᕤⰋࢆ᳨ฟࡋࡼ࠺ࡋࡓ㝿 㸪 ᐃ㊥㞳๐Ꮝ㛗ࡢ㛵ಀࢆ㐺ษタᐃࡋ࡞࠸ ᕤⰋࡀ᳨ฟ࡛ࡁ࡞࠸ྍ⬟ᛶࡀ࠶ࡿ⪃࠼ࡽࢀࡿࠋࡇ ࢀࡣ㸪ࢥࣥࢡ࣮ࣜࢺ⾲㠃㛫ࡢ㉸㡢Ἴఏ㏿ᗘࡀ ᐃ㊥ 㞳ࡼࡗ࡚␗࡞ࡿࡇࡽࡶఏ⤒㊰ࡢ᳨ドࡀᚲせ࡛ ࠶ࡿ⪃࠼ࡽࢀࡓࠋ ᥋╔⣔࣮ࣥ࢝ࡢ๐Ꮝ㛗 PP㸪๐Ꮝᚄ PP ࡢ 1R 㹼1R ࡛ࡣ㸪✵㝽 ࡢ㉸㡢Ἴఏ㏿ᗘ ᫂☜࡞㐪࠸ࡣ☜ㄆࡉࢀ࡞ࡗࡓࠋ ᥋╔⣔࣮ࣥ࢝ࡢ๐Ꮝ㛗 PP㸪๐Ꮝᚄ PP ࡢ 1R 㹼1R ࡛ࡣ㸪✵㝽 ࡢ㉸㡢Ἴఏ㏿ᗘ᫂☜ ࡞㐪࠸ࡀ☜ㄆࡉࢀ࡞ࡗࡓࡀ㸪✵㝽 ࡽࢃࡎᕪ ࡀ⏕ࡌ㸪✵㝽 ࡛㉸㡢Ἴఏ㏿ᗘࡀపୗࡍࡿഴྥࢆ♧ ࡋࡓࠋ ࡇࡢせᅉࡋ࡚㸪᥋╔⣔࣮ࣥ࢝ࡣ㸪✵㝽 ࠾࠸ ࡚ࡶ⦆ࡳࡀⓎ⏕ࡋ࡞࠸᭷ᶵ⣔᥋╔ࡢ╔ຊࡀ㧗 ࠸ࡓࡵ㸪✵㝽 ௨ୗ࡛ࡣ㉸㡢Ἴఏ㏿ᗘᙳ㡪ࢆཬࡰ ࡉ࡞ࡗࡓࡶࡢ⪃࠼ࡽࢀࡿࠋ ࡇࢀࡽࡢ⤖ᯝࡼࡾ㸪㔠ᒓ⣔࣮ࣥ࢝ࡢゐデ࡚᫂ࡽ ุู࡛ࡁࡿᕤⰋࡘ࠸࡚ࡣ㸪㉸㡢Ἴఏ㏿ᗘ ࡛ࡶ᫂☜࡞㐪࠸ࡀ☜ㄆࡉࢀࡓࠋ᥋╔⣔࣮ࣥ࢝ࡢゐデ ࡛⦆ࡳࡢุูࡀฟ᮶࡞࠸≧ែ࡛࠶ࡿᕤⰋ࠾࠸࡚ ࡶ✵㝽ࡀ ࡛࠶ࢀࡤ㸪㉸㡢Ἴఏ㏿ᗘࡀపୗࡍࡿഴྥ ࢆ♧ࡋ㸪᳨ฟ࡛ࡁࡿྍ⬟ᛶࡀ♧၀ࡉࢀࡓࠋ 㸬 ṧᏑ⪏ຊࡢ᥎ᐃ ᐇ㦂ᴫせ ࠶ᕤ࣮ࣥ࢝ࡢຍຊヨ㦂ࡸᘬᢤヨ㦂ࡣ㸪ᘬᙇ⪏ ຊ➼ࢆ ᐃࡍࡿࡓࡵᐇࡍࡿࡀ㸪ᕤⰋ࣭⤒ᖺຎ ࡼࡿᘬᙇ⪏ຊࡢ㊊࣭పୗࢆࣃ࣓࣮ࣛࢱࡋ࡚᧯ సࡍࡿࡢࡣᅔ㞴࡛࠶ࡿࡓࡵ㸪᭱Ⲵ㔜ᚋࡢṧᏑ⪏ຊࢆ ᅗ㸴 ㍕Ⲵ๓ᚋࡢ㉸㡢Ἴఏ ᐃࡢᴫᛕᅗ ࣃ࣓࣮ࣛࢱࡋ࡚ṧᏑ⪏ຊࡢ᥎ᐃࢆ⾜ࡗࡓࠋ࠶ᕤ ࣮ࣥ࢝ࡢṧᏑ⪏ຊࢆ᥎ᐃࡍࡿࡓࡵ㸪㉸㡢Ἴ ᐃჾࢆ ⏝࠸࡚㍕Ⲵ๓ᚋࡢ࣮ࣥ࢝࣎ࣝࢺ㢌㒊ࢥࣥࢡ࣮ࣜࢺ ⾲㠃㛫ࡢ㉸㡢Ἴఏ㏿ᗘࡢ ᐃࢆ⾜ࡗࡓࠋᅗ㸴㍕Ⲵ ๓ᚋࡢ㉸㡢Ἴఏ ᐃࡢᴫᛕᅗࢆ♧ࡍࠋ㉸㡢Ἴࡢ࿘Ἴ ᩘࡢᙳ㡪ࢆᢕᥱࡍࡿࡓࡵ㸪᥈ゐᏊ࡛Ⓨཷࡍࡿබ⛠࿘ Ἴᩘࡣ N+] N+] ࡛ᐇ㦂ࢆ⾜ࡗࡓࠋ ᐇ㦂᪉ἲ ⾲㸰ヨ㦂యࡢㅖඖࢆ♧ࡍࠋヨ㦂యࡣ㸪↓ᶵ⣔᥋╔ ࡢ᥋╔⣔࣮ࣥ࢝ࢆཌࡉ PP ࡢࢥࣥࢡ࣮ࣜࢺ∧ ᕤ ࡋ ࡓ ࠋ ࢥ ࣥ ࢡ ࣜ ࣮ ࢺ ∧ ࡢ 㓄 ྜ ࡣ : & 㸪 VD 㸪: NJP㸪᪩ᙉࢭ࣓ࣥࢺ⏝࡛࠶ࡾ㸪ᅽ ⦰ᙉᗘȪࡣ 1PP࡛࠶ࡗࡓࠋヨ㦂యࡣ㍕Ⲵࡍࡿ๓ ࢆࡋ㸪㍕ⲴᚋࡢṧᏑ⪏ຊࢆࣃ࣓࣮ࣛࢱࡋ࡚ྛ ヨ㦂యࡢ㉸㡢Ἴఏ㏿ᗘࡢ ᐃࢆ⾜ࡗࡓࠋᇶ‽࡞ࡿ ᘬᙇ⪏ຊࡣヨ㦂య 1R ࡢ᭱Ⲵ㔜ࡋࡓࠋ㝖ⲴⲴ㔜 ࡣ᭱Ⲵ㔜ࡲ࡛㍕Ⲵࡋࡓᚋ㸪ᗘ㍕Ⲵࢆ⾜࠸㝖Ⲵࡋ ࡓⲴ㔜ࡢࡇ࡛࠶ࡿࠋṧᏑ⪏ຊẚࡣ㸪ࡑࢀࡒࢀࡢ᮲௳ 1000 1500 2000 2500 3000 3500 4000 4500 0 100 200 300 ㉸㡢 Ἴఏ ㏿ ᗘ 䠄 m/ s 䠅 ᐃ㊥㞳䠄mm䠅 䝁䞁䜽䝸䞊䝖⾲㠃 (No.9䠈10ᖹᆒ್) ✵㝽12.5%(No.11) ✵㝽25%(No.12) ✵㝽37.5%(No.13) ✵㝽50%(No.14) 1000 1500 2000 2500 3000 3500 4000 4500 0 100 200 300 ㉸㡢 Ἴఏ ㏿ᗘ 䠄 m/ s 䠅 ᐃ㊥㞳䠄mm䠅 䝁䞁䜽䝸䞊䝖⾲㠃 (No.15䠈16ᖹᆒ್) ✵㝽20%(No.17) ✵㝽40%(No.18) ✵㝽60%(No.19) ✵㝽80%(No.20䠈21ᖹᆒ್) No. グྕ ✀㢮 䜰䞁䜹䞊ᚄ 䜰䞁䜹䞊㛗(mm) ๐Ꮝ㛗(mm) ๐Ꮝᚄ(mm) 㝖ⲴⲴ㔜(kN) ṧᏑ⪏ຊẚ ഛ⪃ 1 ᥋╔⣔-M8-80- - -2 ᥋╔⣔-M8-80-0.6Pmax 14.4 - ᇶ‽⪏ຊ䛾⣙6䛷◚ቯ๓䛻㝖Ⲵ 3 ᥋╔⣔-M8-80-Pmax 24.7 1.00 ᭱Ⲵ㔜┤ᚋ䛻㝖Ⲵ䠄ᇶ‽⪏ຊ䠅 4 ᥋╔⣔-M8-80-ṧᏑ0.4 10.0 0.40 ᭱Ⲵ㔜ᚋ䛻㝖ⲴⲴ㔜䜎䛷㍕Ⲵ 5 ᥋╔⣔-M8-80-ṧᏑ0.2 5.2 0.21 ᭱Ⲵ㔜ᚋ䛻㝖ⲴⲴ㔜䜎䛷㍕Ⲵ 6 ᥋╔⣔-M8-80-ṧᏑ0.1 3.3 0.13 ᭱Ⲵ㔜ᚋ䛻㝖ⲴⲴ㔜䜎䛷㍕Ⲵ 7 ᥋╔⣔-M8-80-ṧᏑ0.01 0.3 0.01 ᭱Ⲵ㔜ᚋ䛻㝖ⲴⲴ㔜䜎䛷㍕Ⲵ ṧᏑ⪏ຊẚ=㝖ⲴⲴ㔜㻛ᇶ‽⪏ຊ ᥋╔⣔ M8 140 80 10.5 䜰䞁䜹䞊㛗 ๐Ꮝᚄ ๐Ꮝ㛗 䛒䛸ᕤ䜰䞁䜹䞊 䠄M8᥋╔⣔䠅 ᐃ㊥㞳 ㉸㡢Ἴ ᐃჾ Ⓨ᥈ゐᏊ ཷ᥈ゐᏊ 䝁䞁䜽䝸䞊䝖∧ ᘬᙇ㍕Ⲵ ㍕Ⲵᚋ
ᅗ㸵 ㍕Ⲵ๓ᚋࡢ㉸㡢Ἴఏ㏿ᗘ㸦N+]㸧 ᅗ㸶 ㍕Ⲵ๓ᚋࡢ㉸㡢Ἴఏ㏿ᗘ 㸦N+]1R㹼1R㸧 ࡢⲴ㔜ࡲ࡛㍕Ⲵࡋࡓ㝿ࡢ㝖ⲴⲴ㔜ࢆ㸪ᇶ‽࡞ࡿᘬᙇ ⪏ຊࡢ᭱Ⲵ㔜࡛㝖ࡋ࡚ồࡵࡓࠋ࡞࠾㸪࠸ࡎࢀࡢ᮲௳ ࠾࠸࡚ࡶ㸪㍕Ⲵᚋࡢ࠶ᕤ࣮ࣥ࢝ࡣゐデ࡛⦆ࡳ ࡣ☜ㄆࡉࢀ࡞ࡗࡓࠋྛヨ㦂యࡢ ᐃ㊥㞳ࡣ㸪බ⛠࿘ Ἴᩘࡀ N+] ࡢሙྜ㸪㸪㸪㸪㸪PP㸪 N+] ࡢሙྜ㸪㸪㸪PP ࡋ㸪ẚ㍑ᑐ㇟ࡋ࡚ ࢥࣥࢡ࣮ࣜࢺ⾲㠃㛫ࡢ㉸㡢Ἴఏ㏿ᗘࢆ ᐃࡋࡓࠋ ᐇ㦂⤖ᯝ බ⛠࿘Ἴᩘ N+] ࡛ ᐃࡋࡓሙྜࡢᐇ㦂⤖ᯝ ᅗ㸵㍕Ⲵ๓ᚋࡢ㉸㡢Ἴఏ㏿ᗘࢆ♧ࡍࠋᇶᮏⓗ ㉸㡢Ἴఏ㏿ᗘࡣ㸪ṧᏑ⪏ຊࡢ⛬ᗘࡼࡽࡎ ᐃ㊥㞳 ࡀ▷࠸ᑠࡉࡃ࡞ࡿഴྥࢆ♧ࡋࡓࠋࢥࣥࢡ࣮ࣜࢺ⾲ 㠃㛫࠾࠸࡚ࡶྠᵝ ᐃ㊥㞳ࡀ▷࠸ᑠࡉࡃ࡞ࡿ ࡇࢆ☜ㄆࡋ࡚࠸ࡿࠋࡇࢀࡣ㸪๓㏙ࡢ⤖ᯝྠᵝ ᐃ㊥㞳ࡀ㛗ࡃ࡞ࡿࡘࢀ࡚㉸㡢Ἴࡀࢥࣥࢡ࣮ࣜࢺෆ㒊 ࢆఏࡋ᫆ࡃ࡞ࡿࡓࡵ㸪ࢥࣥࢡ࣮ࣜࢺࡢ⾲ᒙෆ㒊ࡢ ရ㉁ࡢ㐪࠸ࡀᙳ㡪ࡍࡿࡶࡢ⪃࠼ࡽࢀࡿࠋ 1R㸪1R㸪1R ࡢṧᏑ⪏ຊẚ ࠾ࡼࡧ ࡛ࡣ㸪ṧᏑ⪏ຊࡼࡿ㉸㡢Ἴఏ㏿ᗘࡢ᫂☜࡞㐪࠸ ࡣ☜ㄆࡉࢀ࡞ࡗࡓࠋ 1R ࡢṧᏑ⪏ຊẚ ࡛ࡣ㸪ࡢ᮲௳ẚ㍑ࡋ࡚ ᐃ㊥㞳 PP㹼PP ࡛㉸㡢Ἴఏ㏿ᗘࡀపୗࡍࡿഴྥ ࢆ♧ࡋ㸪≉㸪 ᐃ㊥㞳 PP ࡛᫂☜࡞ᕪࡀ☜ㄆࡉࢀ ᅗ㸷 ㍕Ⲵ๓ᚋࡢ㉸㡢Ἴఏ㏿ᗘ 㸦N+]1R1R㹼1R㸧 ᅗ㸯㸮 ㉸㡢Ἴఏ㏿ᗘṧᏑ⪏ຊẚࡢ㛵ಀ㸦N+]㸧 ࡓࠋࡇࢀࡽࡢ⤖ᯝࡼࡾ㸪බ⛠࿘Ἴᩘ N+] ࡛ ᐃࡋࡓ ሙྜ㸪ṧᏑ⪏ຊẚ ⛬ᗘ࡛࠶ࢀࡤ㸪㉸㡢Ἴఏ㏿ᗘ ࡀపୗࡍࡿഴྥࢆ♧ࡋࡓࠋ බ⛠࿘Ἴᩘ N+] ࡛ ᐃࡋࡓሙྜࡢᐇ㦂⤖ᯝ ᅗ㸶㸪ᅗ㸷㍕Ⲵ๓ᚋࡢ㉸㡢Ἴఏ㏿ᗘࢆ♧ࡍࠋබ ⛠࿘Ἴᩘ N+] ࢆ⏝࠸ࡓሙྜ㸪ࢥࣥࢡ࣮ࣜࢺ⾲㠃㛫ࡢ ㉸㡢Ἴఏ㏿ᗘࡣ ᐃ㊥㞳ࡼࡽࡎྠ⛬ᗘ࡛࠶ࡗࡓࠋ ࡇࢀࡣ㸪㧗࿘Ἴࢆ⏝࠸ࡓࡇ࡛ࢥࣥࢡ࣮ࣜࢺ⾲ᒙࡢࡳ ࢆ㉸㡢Ἴࡀఏࡋ㸪ෆ㒊ࡢရ㉁ࡢ㐪࠸ࡀᙳ㡪ࡋ࡞ࡗ ࡓࡶࡢ⪃࠼ࡽࢀࡿࠋ୍᪉㸪1R㹼1R ࡢ㉸㡢Ἴఏ ㏿ᗘࡣ㸪 ᐃ㊥㞳ࡀ▷࠸ᑠࡉࡃ࡞ࡿࡇࡀ☜ㄆࡉ ࢀࡓࠋ㍕Ⲵ๓ᚋࡢᙳ㡪ࡋ࡚㸪1R㹼1R ࡢ㉸㡢Ἴఏ ㏿ᗘࡣ㸪ᇶ‽⪏ຊࡢ⣙ ࡛◚ቯ๓㝖Ⲵࡋࡓሙྜ ᇶ‽⪏ຊ┤ᚋ㝖Ⲵࡋࡓሙྜ࡛ࡣ᫂☜࡞ᕪ ࡀ☜ㄆࡉࢀ࡞ࡗࡓࠋ No.4㹼No.7 ࡢ㉸㡢Ἴఏ㏿ᗘࡣ㸪ṧᏑ⪏ຊẚ 0.2 ௨ ୗࡽⱝᖸపୗࡋ㸪ṧᏑ⪏ຊ 0.01 ࡛᫂ࡽపୗࡍࡿ ഴྥࢆ♧ࡋࡓࠋ ᅗ㸯㸮㉸㡢Ἴఏ㏿ᗘṧᏑ⪏ຊẚࡢ㛵ಀࢆ♧ࡍࠋ ᐃ㊥㞳 㸪㸪PP ࡢṧᏑ⪏ຊẚ 㸦3PD[㸧ṧ Ꮡ⪏ຊẚ ࢆẚ㍑ࡍࡿ㸪 ᐃ㊥㞳 PP ࡛ṧᏑ⪏ຊ ẚ ࡢ㉸㡢Ἴఏ㏿ᗘࡀⱝᖸప࠸ࡀ㸪ࡢ᮲௳࡛ࡣ ྠ⛬ᗘ࡛࠶ࡿࡇࡀ☜ㄆࡉࢀࡓࠋᅗ㸯㸯㉸㡢Ἴఏ 0 500 1000 1500 2000 2500 3000 3500 4000 0 100 200 300 400 ㉸㡢 Ἴఏ ㏿ ᗘ 䠄 m/s 䠅 ᐃ㊥㞳䠄mm䠅 䝁䞁䜽䝸䞊䝖⾲㠃 (No.1) ṧᏑ0.2(No.5) ṧᏑ0.1(No.6) ṧᏑ0.01(No.7) 0 500 1000 1500 2000 2500 3000 3500 4000 0 50 100 150 200 ㉸㡢 Ἴఏ ㏿ ᗘ䠄 m/s 䠅 ᐃ㊥㞳䠄mm䠅 䝁䞁䜽䝸䞊䝖 (No.1) 0.6Pmax(No.2) Pmax(No.3) 0 500 1000 1500 2000 2500 3000 3500 4000 0 50 100 150 200 ㉸㡢Ἴ ఏ ㏿ᗘ䠄 m/s 䠅 ᐃ㊥㞳䠄mm䠅 䝁䞁䜽䝸䞊䝖 (No.1) ṧᏑ0.4(No.4) ṧᏑ0.2(No.5) ṧᏑ0.1(No.6) ṧᏑ0.01(No.7) 0 500 1000 1500 2000 2500 3000 3500 4000 0 0.2 0.4 0.6 0.8 1 1.2 ㉸㡢 Ἴఏ ㏿ᗘ 䠄 m/s 䠅 ṧᏑ⪏ຊẚ ᐃ㊥㞳120mm ᐃ㊥㞳80mm ᐃ㊥㞳40mm
ᅗ㸯㸯㉸㡢Ἴఏ㏿ᗘṧᏑ⪏ຊẚ 㹼 ࡢ㛵ಀ 㸦N+]㸧 ᅗ㸯㸰 ㉸㡢Ἴ ᐃ⤒㊰ࡢᴫᛕᅗ ⾲㸱 ᐇ㦂⤖ᯝ୍ぴ ㏿ᗘṧᏑ⪏ຊẚ 㹼 ࡢ㛵ಀࢆ♧ࡍࠋ ᐃ㊥㞳 㸪㸪PP ࡛ࡣ㸪ṧᏑ⪏ຊẚ ࡽṧᏑ⪏ຊẚࡀ ᑠࡉࡃ࡞ࡿ㉸㡢Ἴఏ㏿ᗘࡶపୗࡍࡿഴྥࢆ♧ࡋ࡚ ࠸ࡿࠋࡇࢀࡽࡢ⤖ᯝࡼࡾ㸪බ⛠࿘Ἴᩘ N+] ࡛ ᐃࡋ ࡓሙྜ㸪 ᐃ㊥㞳 㹼PP ࡛ṧᏑ⪏ຊẚࡀ ⛬ ᗘ࡛࠶ࢀࡤṧᏑ⪏ຊࡢ᥎ᐃࡀ࡛ࡁࡿྍ⬟ᛶࡀ㧗࠸⪃ ࠼ࡽࢀࡿࠋබ⛠࿘Ἴᩘ N+] ࡛ ᐃࡋࡓሙྜ㸪 ᐃ㊥ 㞳 㹼PP ࡛ṧᏑ⪏ຊẚࡀ ௨ୗ࡛࠶ࢀࡤṧᏑ⪏ ຊࡢ᥎ᐃࡀ࡛ࡁࡿྍ⬟ᛶࡀ㧗࠸⪃࠼ࡽࢀࡿࠋ 㸬 ㉸㡢Ἴఏ⤒㊰ࡢ᳨ド ᐇ㦂ᴫせ ๓㏙ࡢヨ㦂⤖ᯝࡼࡾ㉸㡢Ἴἲ࡛ᕤⰋࡢ᳨ฟ㸪 ṧᏑ⪏ຊࡢ᥎ᐃࡀྍ⬟࡛࠶ࡿࡇࡀ♧၀ࡉࢀࡓࠋࡋ ࡋ㸪᭦⢭ᗘࢆྥୖࡉࡏࡿࡓࡵࡣ ᐃ᪉ἲ㸪⏝ࡍ ࡿ࿘Ἴᩘࡸࡑࢀᛂࡌࡓ ᐃ㊥㞳ࡘ࠸᳨࡚ウㄢ㢟ࡀ ṧࡿࠋ࿘Ἴᩘࡢኚࡣ ᐃᶵჾࡢවࡡྜ࠸ࡀ࠶ࡿࡓ ࡵ㸪 ᐃ᪉ἲࡢጇᙜᛶࡋ࡚㉸㡢Ἴఏ⤒㊰ࡢ᳨ドࢆ ⾜ࡗࡓࠋ ᅗ㸯㸰㉸㡢Ἴఏ⤒㊰ࡢᴫᛕᅗࢆ♧ࡍࠋᮏ᮶㸪⾲ 㠃ἲ࠾ࡅࡿ㉸㡢Ἴࡢఏ⤒㊰ࡣⓎཷ᥈ゐᏊ㛫ࢆᘼ ≧ఏࡍࡿ ࡀᅗ୰ࡢ㉸㡢Ἴఏ࣓࣮ࢪࡣ⡆␎ ࡋ࡚┤⥺࡛♧ࡋࡓࠋ࠶ᕤ࣮ࣥ࢝ᕤᚋࡢ㉸㡢Ἴ ఏ㏿ᗘࡢ ᐃ᪉ἲࡣ㸪࣮ࣥ࢝࣎ࣝࢺ㢌㒊Ⓨ᥈ ゐᏊࢆタ⨨ࡋ㸪㉸㡢Ἴࡀ࣮ࣥ࢝࣎ࣝࢺࡽࢥࣥࢡࣜ ࣮ࢺ⾲㠃ࢆఏ㐩ࡋ࡚ཷ᥈ゐᏊ฿㐩ࡍࡿࡶࡢ⪃࠼ ࡽࢀࡿࠋ⌮ㄽୖ㸪ࡑࡢ㉸㡢Ἴఏ㏿ᗘࡣ㸪࣮ࣥ࢝࣎ ࣝࢺ༢యࢆ ᐃࡋࡓሙྜࢥࣥࢡ࣮ࣜࢺ༢యࢆ ᐃࡋ ࡓሙྜࡢఏ㛫ࢆྜィࡋ࡚ồࡵࡿ㉸㡢Ἴఏ㏿ᗘ ᅗ㸯㸱 ㉸㡢Ἴఏ㏿ᗘ㸦1R㸪1R㸧 ࡰ➼ࡋࡃ࡞ࡿ⪃࠼ࡽࢀࡿࠋࡇࡇ࡛㸪ࡰ➼ࡋ࠸ ࡋࡓࡢࡣ㸪ྛᮦᩱࢆఏࡍࡿ㝿ࡢῶ⾶㸪࠶ᕤࣥ ࣮࢝ࡢ᥋╔ࡢ㉸㡢Ἴఏ㏿ᗘࢆ⪃៖ࡋ࡞࠸ࡓࡵ࡛࠶ ࡿࠋ᥈ゐᏊ࡛Ⓨཷࡍࡿබ⛠࿘Ἴᩘࡣ N+] ࡛ᐇ㦂ࢆ ⾜ࡗࡓࠋ ᐇ㦂᪉ἲ ㉸㡢Ἴఏ㏿ᗘࡣ㸪ᅗ㸯㸰♧ࡍࡼ࠺࡞᪉ἲ࡛࠶ ᕤ࣮ࣥ࢝ࢥࣥࢡ࣮ࣜࢺ⾲㠃㛫㸪࣮ࣥ࢝࣎ࣝࢺ ༢య㸪ࢥࣥࢡ࣮ࣜࢺ༢య࡛ࡑࢀࡒࢀ ᐃࢆ⾜ࡗࡓࠋ ᐃ㊥㞳ࡣ㸪࠶ᕤ࣮ࣥ࢝ࢥࣥࢡ࣮ࣜࢺ⾲㠃㛫㸪 ࢥࣥࢡ࣮ࣜࢺ༢యࡣ 㸪㸪PP ࡋ㸪࣮ࣥ࢝࣎ ࣝࢺ༢యࡣ࣮ࣥ࢝࣎ࣝࢺ㢌㒊ࡽࢥࣥࢡ࣮ࣜࢺ⾲㠃 ࡲ࡛ࡢ㊥㞳 PP ࡛ ᐃࢆ⾜ࡗࡓࠋࢥࣥࢡ࣮ࣜࢺ༢య ࣮ࣥ࢝࣎ࣝࢺ༢యࡢఏ㛫ࢆྜィࡋࡓ㝿ࡢ ᐃ㊥ 㞳ࡣ㸪࠶ᕤ࣮ࣥ࢝ࢥࣥࢡ࣮ࣜࢺ⾲㠃㛫ࡢ ᐃ ྠᵝⓎ᥈ゐᏊࢆタ⨨ࡋࡓ࣮ࣥ࢝࣎ࣝࢺࡽཷ R² = 0.8315 R² = 0.6968 R² = 0.7921 0 500 1000 1500 2000 2500 3000 3500 4000 0 0.1 0.2 0.3 0.4 0.5 ㉸㡢 Ἴఏ ㏿ ᗘ 䠄 m/ s 䠅 ṧᏑ⪏ຊẚ 120mm 80mm 40mm Ⓨ᥈ゐᏊ ཷ᥈ゐᏊ 䝁䞁䜽䝸䞊䝖∧ Ⓨ᥈ゐᏊ ཷ᥈ゐᏊ Ⓨ᥈ゐᏊ ཷ᥈ゐᏊ 䛒䛸ᕤ䜰䞁䜹䞊 ᕤᚋ䛾 ᐃ 䜰䞁䜹䞊䝪䝹䝖 䛾䜏 ᐃ 䝁䞁䜽䝸䞊䝖⾲㠃 䛾䜏 ᐃ
䠛
㉸㡢Ἴఏ 䜲䝯䞊䝆ȝsec m/sec ȝsec m/sec ȝsec m/sec ȝsec m/sec
1 䛒䛸ᕤ䜰䞁䜹䞊䠄䠅 31.2 1283 - - 43.0 1862 55.6 2160 ᐃ㊥㞳䛿䜰䞁䜹䞊䝪䝹䝖䛛䜙䛾㊥㞳 2 䝁䞁䜽䝸䞊䝖 13.4 2978 - - 29.1 2752 41.2 2910 䝁䞁䜽䝸䞊䝖⾲㠃㛫䜢 ᐃ 3 䜰䞁䜹䞊䝪䝹䝖 - - 13.6 4423 - - - - ᐃ㊥㞳䛿䜰䞁䜹䞊䝪䝹䝖㢌㒊䛛䜙䝁䞁䜽䝸䞊䝖⾲㠃䜎䛷䛾㊥㞳 4 䝁䞁䜽䝸䞊䝖+䜰䞁䜹䞊䝪䝹䝖 27.0 1481 - - 42.6 1876 54.8 2190 No.2+No.3䠈 ᐃ㊥㞳䛿䜰䞁䜹䞊䝪䝹䝖䛛䜙䛾㊥㞳 ഛ⪃ 80 120 No. ᮲௳ ᐃ㊥㞳(mm) 40 60 0 500 1000 1500 2000 2500 3000 3500 4000 40 80 120 ㉸㡢Ἴ ఏ ㏿ᗘ䠄 m/ s 䠅 ᐃ㊥㞳䠄mm䠅 No.1 䛒䛸ᕤ䜰䞁䜹䞊䠄䠅 No.4 䝁䞁䜽䝸䞊䝖+䜰䞁䜹䞊䝪䝹䝖
᥈ゐᏊࡲ࡛ࡢᖹ㠃㊥㞳ࡋࡓࠋ ᐇ㦂⤖ᯝ ⾲㸱ᐇ㦂⤖ᯝ୍ぴ㸪ᅗ㸯㸱㉸㡢Ἴఏ㏿ᗘࢆ♧ ࡍࠋ࣮ࣥ࢝࣎ࣝࢺ༢యࢥࣥࢡ࣮ࣜࢺ༢యࡢఏ 㛫ࢆྜィࡋ࡚ồࡵࡓ㉸㡢Ἴఏ㏿ᗘࡣ㸪࠶ᕤࣥ ࣮࢝ࢥࣥࢡ࣮ࣜࢺ⾲㠃㛫ࡢఏ㏿ᗘྠ⛬ᗘ࡛࠶ࡿ ࡇࡀ☜ㄆࡉࢀࡓࠋ୧⪅⏕ࡌ࡚࠸ࡿ㉸㡢Ἴఏ㏿ᗘ ࡢᕪࡣ㸪๓㏙ࡋࡓࡼ࠺ྛᮦᩱࢆఏࡍࡿ㝿ࡢῶ⾶㸪 ࣮ࣥ࢝᥋╔ࡢ㉸㡢Ἴఏ㏿ᗘࢆ⪃៖ࡋ࡚࠸࡞࠸ࡓ ࡵ࡛࠶ࡿ⪃࠼ࡽࢀࡿࠋ ᐃࡋࡓࡼ࠺㸪㉸㡢Ἴࡢఏ⤒㊰ࡣࢥࣥࢡ࣮ࣜࢺ ⾲㠃ࢆఏ㐩ࡋ᫆࠸⪃࠼ࡽࢀࡿࠋࡘࡲࡾ㸪ඛ᳨ウࡋ ࡓᕤⰋࡢ᳨ฟࡸṧᏑ⪏ຊࡢ᥎ᐃࡢ࡞࡛㸪✵㝽 ᮍ‶㸦࣮ࣥ࢝ඛ➃ࡢ✵㝽㸧ࡸṧᏑ⪏ຊẚ ࢆ㉸࠼ ࡿ᮲௳࡞ࡣ㸪ࢥࣥࢡ࣮ࣜࢺ⾲㠃ࡢ㉸㡢Ἴࡢఏᙳ 㡪ࢆཬࡰࡉ࡞ࡗࡓࡶࡢ᥎ᐹࡉࢀࡿࠋᅇࡣ㸪ᐇᵓ 㐀≀࠾ࡅࡿㄪᰝࢆᐃࡋ࡚࣮ࣥ࢝࣎ࣝࢺ㢌㒊ࢥ ࣥࢡ࣮ࣜࢺ⾲㠃㛫ࢆᑐ㇟ࡋࡓࡀ㸪࣮ࣥ࢝࣎ࣝࢺ㢌 㒊ࡽࢥࣥࢡ࣮ࣜࢺ⫼㠃㏱㐣ࡉࡏࡿ➼ࡢ᳨ウࢆ⾜࠸㸪 ヲ⣽࡞࣓࢝ࢽࢬ࣒ࢆゎ᫂ࡍࡿᚲせࡀ࠶ࡿ⪃࠼ࡽࢀࡿࠋ ࡲࡵ ᮏ✏ࡣ㸪࠶ᕤ࣮ࣥ࢝ࡢᗘࢆຠ⋡ⓗࡘ㐺 ษホ౯ࡍࡿࡇࢆ┠ⓗࡋ࡚㸪㉸㡢Ἴヨ㦂ࡼࡗ࡚ ࠶ᕤ࣮ࣥ࢝ࢥࣥࢡ࣮ࣜࢺ⾲㠃ࡢ㉸㡢Ἴఏ㏿ ᗘࡘ࠸᳨࡚ウࢆ⾜ࡗࡓࠋ ᳨ウ⤖ᯝࢆḟࡲࡵࡿࠋ 㸦㸯㸧㔠ᒓ⣔࣮ࣥ࢝ࡢゐデ࡚᫂ࡽุู࡛ࡁࡿ ᕤⰋࡘ࠸࡚ࡣ㸪㉸㡢Ἴఏ㏿ᗘ࡛ࡶ᫂☜࡞㐪࠸ ࡀ☜ㄆࡉࢀࡓࠋ 㸦㸰㸧᥋╔⣔࣮ࣥ࢝ࡢゐデ࡛ࡣ⦆ࡳࡢุูࡀฟ᮶࡞ ࠸≧ែ࡛࠶ࡿᕤⰋ࠾࠸࡚ࡶ✵㝽ࡀ ࡛࠶ࢀࡤ㸪 ᳨ฟ࡛ࡁࡿྍ⬟ᛶࡀ♧၀ࡉࢀࡓࠋ 㸦㸱㸧බ⛠࿘Ἴᩘ N+] ࡛ ᐃࡋࡓሙྜ㸪 ᐃ㊥㞳 㹼PP ࡛ṧᏑ⪏ຊẚࡀ ⛬ᗘ࡛࠶ࢀࡤṧᏑ⪏ຊࡢ ᥎ᐃࡀྍ⬟࡛࠶ࡿࡇࡀ♧၀ࡉࢀࡓࠋ 㸦㸲㸧බ⛠࿘Ἴᩘ N+] ࡛ ᐃࡋࡓሙྜ㸪 ᐃ㊥㞳 㹼PP ࡛ṧᏑ⪏ຊẚࡀ ௨ୗ࡛࠶ࢀࡤṧᏑ⪏ຊࡢ᥎ ᐃࡀྍ⬟࡛࠶ࡿࡇࡀ♧၀ࡉࢀࡓࠋ 㸦㸳㸧࠶ᕤ࣮ࣥ࢝ࢥࣥࢡ࣮ࣜࢺ⾲ᒙ㛫ࡢ㉸㡢 Ἴఏ㏿ᗘࡣ㸪࣮ࣥ࢝࣎ࣝࢺ༢యࢥࣥࢡ࣮ࣜࢺ༢ యࡢఏ㛫ࢆྜィࡋ࡚ồࡵࡓ㉸㡢Ἴఏ㏿ᗘྠ⛬ ᗘ࡛࠶ࡿࡇࡀ☜ㄆࡉࢀࡓࠋ ᮏᐇ㦂ࡢ᮲௳ୗ࡛ࡣ㸪ᕤⰋࢆ᳨ฟࡍࡿሙྜ㸪බ ⛠࿘Ἴᩘ N+]㸪 ᐃ㊥㞳 㹼PP ࡛ ᐃࡍࡿࡇ ࡛ホ౯ྍ⬟࡛࠶ࡿ⪃࠼ࡽࢀࡓࠋṧᏑ⪏ຊࢆホ౯ࡍࡿ ሙྜ㸪බ⛠࿘Ἴᩘ N+]㸪 ᐃ㊥㞳 㹼PP ࡛ ᐃ ࡍࡿࡇ࡛ホ౯ྍ⬟࡛࠶ࡿࡇࡀ♧၀ࡉࢀࡓࠋ ᚋࡣ㸪ᐇ⏝ྥࡅ࡚㸪᭱㐺࡞࿘Ἴᩘࡸ ᐃ㊥㞳㸪 ᐃ᪉ἲࡢᙳ㡪ࢆᢕᥱࡋ㸪⦆ࡳࡸሸ㊊ࢆᶍᨃࡋࡓ ᕤⰋࡢ᳨ฟ㸪ᕤⰋ࣭⤒ᖺຎࡼࡿᘬᙇ⪏ຊ ࡢ㊊࣭పୗࢆᐃࡋࡓṧᏑ⪏ຊࡢ᥎ᐃ㛵ࡍࡿ⢭ᗘ ྥୖࡘ࠸᳨࡚ウࢆ⾜࠺ணᐃ࡛࠶ࡿࠋࡲࡓ㸪࠶ᕤ ࣮ࣥ࢝㏆ഐࡢࡦࡧࢀࡢᙳ㡪ࡸ㸪㗰ᮦ࡞ࡢ㝃ᖏタ ഛࡢᙳ㡪ࡘ࠸࡚ࡶ᳨ウࢆ⾜࠸㸪ᐇᵓ㐀≀࠾ࡅࡿㄪ ᰝ࡛ࡢຠ⋡ⓗࡘ㐺ษホ౯ྍ⬟࡞ᗘᡭἲࡢ☜❧ ⧅ࡆࡓ࠸ࠋ ཧ⪃ᩥ⊩ 1) ᅵᮌᏛ㸸ࢥࣥࢡ࣮ࣜࢺࣛࣈ࣮ࣛࣜ141 ࢥࣥࢡ࣮ࣜࢺࡢ࠶ᕤ࣮ࣥ࢝ᕤἲࡢタィ࣭ᕤᣦ㔪㸦㸧㸪2014.3 2) ᅜᅵ㏻┬㸸ࢺࣥࢿࣝኳᯈࡢⴠୗᨾ㛵ࡍࡿㄪᰝ᳨࣭ウጤဨሗ࿌᭩㸪2013.6 3) ᮌᮧ㈗ె㸸㟁☢ࣃࣝࢫἲᇶ࡙ࡃ᥋╔⣔࠶ᕤ࣮ࣥ࢝ᅛ╔㒊ࡢ㠀◚ቯホ౯ᡭἲ㛵ࡍࡿᐇ㦂ⓗ᳨ウ㸪ᅵᮌᏛ➨ 69 ᅇᖺ ḟᏛ⾡ㅮ₇㸪2014.9 4) ᕸගᘯ㸪ఀ⸨⛱㸪ᑠ᳚⣖ᙪ㸪すᘯ㸸᥋╔⣔࠶ᕤ࣮ࣥ࢝ຎ≧ἣࡢ᳨ᰝ᪉ἲ㛵ࡍࡿ☜ㄆᐇ㦂㸪ᅵᮌᏛ➨ 68 ᅇᖺḟᏛ⾡ ㅮ₇㸪2013.9 5) Ⳣᾈு㸪ᕝᓮᘅ㈗㸪ᇼ㝯୍㸪୰ᕝᾈ㸸࣮ࣥ࢝࣎ࣝࢺࡢⅬ᳨ᡭἲࡢ㛤Ⓨ㸫ຍ㏿ᗘィࢆ⏝࠸ࡓᗘホ౯ἲࡢ᳨ウ㸪ᅵᮌᏛ➨ 69 ᅇᖺḟᏛ⾡ㅮ₇㸪2014.9 6) ᪥ᮏ㠀◚ቯ᳨ᰝ༠㸸ࢥࣥࢡ࣮ࣜࢺᵓ㐀≀ࡢ㠀◚ቯヨ㦂᪉ἲ㸪1994.12
EXAMINATION OF SOUNDNESS EVALUATION METHOD OF POST-CONSTRUCTING ANCHOR
BY THE ULTRASONIC-WAVE VELOCITY
M.Suzuki, S.Maehara, and M.Ito
In this paper, we examined the detection of defective construction in metallic system and adhesion system post-constructing anchor by measuring the velocity of ultrasonic wave propagation between the head of anchor bolt and the concrete surface. In addition, we have also examined the differences in ultrasonic propagation velocity in loading the before and after of the adhesion system post-constructing anchor. As a result, it is suggested that it is possible to evaluate the soundness of the post-constructing anchor.
