➉⧄⥔⿵ᙉࢭ࣓ࣥࢺ」ྜᮦᩱࡢ㛤Ⓨά⏝㛵ࡍࡿ◊✲
Study on Application and Development of Cement Composites
Reinforced with Bamboo Fibers
◊✲௦⾲⪅ ᕤᏛ㒊ᘓ⠏Ꮫ⛉*1 ᩍᤵ ᑎ 㞞 Masakazu Terai Environmental destruction such as pollution of air and water has been occurring in some regions by rapid development and production of materials like iron, steel, glass, cement and aluminum that use limited mineral resources. On the other hand, plants and fibers are annually reproducible clean resources. Bamboo is a unique group of gigantic grasses the culm of which originates in underground rhizomes. It grows naturally in many parts around the world country but some species are artificially planted. Bamboo forests are found across tropic and sub-tropic zones between latitudes of about 40° south, i.e. areas with mean annual temperatures of from 20Υ to 30Υ. Bamboo suitable for water pipes grows at altitudes from 20 to 3000 meters. The plant is fully mature at an age of three to four years. This paper investigates the application to explore the possibility of bamboo fiber reinforced cement composites. Some experiments on bamboo fiber reinforced cement composites with the parameters of mix proportion and the shape of bamboo fiber has been carried out. The mechanical properties and the fresh workability on the bamboo fiber reinforced cement composites are studied.
Keywords: Cement Composite, Bamboo Fiber, Compressive Strength, Bending Strength, Splitting Tensile Strength, Sand-total Aggregate Ratio
ࡣࡌࡵ ࢥࣥࢡ࣮ࣜࢺࡣ㸪ᘬᙇᙉᗘࡀప࠸ࡓࡵ⇕ࡸ⇱㸪ᆅ㟈 ࡞ࡢእຊࡼࡗ࡚㸪ࡦࡧࢃࢀࡀ⏕ࡌࡸࡍ࠸ᮦᩱ࡛࠶ࡿ㸬 ࡑࡢࡓࡵ㸪㏻ᖖࢥࣥࢡ࣮ࣜࢺ〇ࡢᵓ㐀≀ࡣ㸪㕲࡞ࡢ⿵ ᙉᮦࢆ㓄ࡋ࡚ࡦࡧࢃࢀࢆ㜵࠸࡛࠸ࡿ㸦㕲➽ࢥࣥࢡ࣮ࣜࢺ ᵓ㐀ࡸ⧄⥔⿵ᙉࢥࣥࢡ࣮ࣜࢺ࡞㸧㸬ⴭ⪅ࡽࡣ㸪ࢥࣥࢡࣜ ࣮ࢺࡢࡦࡧࢃࢀࢆ㜵Ṇࡍࡿࡓࡵ㸪㗰ᮦ௦ࢃࡿᮦᩱ ࡋ࡚ࠕ➉ࠖࢆά⏝ࡋࡓᮦᩱ࣭ᵓ㐀ࡢ㛤Ⓨ◊✲ࢆ⾜ࡗ࡚ࡁ ࡓ㸬ࡇࢀࡲ࡛ࡢ◊✲࡛ࡣ㸪➉ࢆࢥࣥࢡ࣮ࣜࢺᵓ㐀≀ࡢ⿵ ᙉᮦ㸦➉➽㸧ࡋ࡚㸪㛤Ⓨ㏵ୖᅜ࠾ࡅࡿ⪏㟈ᘓ⠏࠾ ࡼࡧ⪏㟈⿵ᙉᢏ⾡⏝ࡍࡿࡓࡵ㸪ᱱ㸪ᰕ㸪ᗋ∧࡞ ࡢ㒊ᮦᐇ㦂ࢆ⾜ࡗ࡚ࡁࡓ㸦ᅗ1㸧㸬㕲➽ࢥࣥࢡ࣮ࣜࢺᵓ㐀 ࡣ㸪㕲ࢥࣥࢡ࣮ࣜࢺ࠸࠺ࡘࡢᮦᩱࡑࢀࡒࢀࡢ㛗ᡤ ࢆάࡋ࡚㸪࠾࠸ࡢࢹ࣓ࣜࢵࢺࢆ⿵࠺ᙧ࡛⌮ⓗ࡞」 ྜᮦᩱࡋ࡚ᡂ❧ࡋ࡚࠸ࡿࡀ㸪㕲ࢆࢃ࡞࠸◊✲ࢆࡋ࡚ ࠸ࡿࡢࡣ⌮⏤ࡀ࠶ࡿ㸬㏆ᖺ㸪㗰ᮦࡢ౯᱁ࡀ㧗㦐ࡋ࡚࠾ ࡾ㸪ࡲࡓⓎᒎ㏵ୖᅜ࡛ࡣ㧗౯࡞㗰ᮦࡣධᡭࡀ㞴ࡋࡃ㸪 㔞⏝ࡣไ㝈ࡉࢀ࡚࠸ࡿ⌧≧ࡀ࠶ࡿ㸬ࡑࡢࡓࡵ㸪ᮏ᮶⿵ ᙉࡀᚲせ࡞ࢥࣥࢡ࣮ࣜࢺᵓ㐀≀࠾࠸࡚㸪༑ศ࡞⿵ᙉࡀ ࡛ࡁ࡚࠸࡞࠸ᆅᇦࡀୡ⏺ࡣᗈࡃศᕸࡋ࡚࠸ࡿ㸬ࡲࡓ㸪 㗰ᮦࡢ⏕⏘ࡣ㔞ࡢ▼⇞ᩱࡀ⏝ࡉࢀࡿࡓࡵ㸪Ⅳ㓟 ࢞ࢫฟࡢほⅬࡽ㸪⎔ቃၥ㢟ࡢ㓄៖ࡽᚋࡣ⏕⏘ ࡀไ㝈ࡉࢀ࡚࠸ࡃࡇࡶ⪃࠼ࡽࢀࡿ㸬ࡑࡇ࡛㸪㗰ᮦࢆ ⏝ࡋ࡞࠸ᵓ㐀≀ࡢ㛤Ⓨࡣ㸪ே㢮ࡢᮍ᮶࠾࠸࡚㸪ពࡢ ࠶ࡿࡇ࡛࠶ࡿ㸬 ᅗ1. ➉➽ࢥࣥࢡ࣮ࣜࢺࡢᐇ㦂◊✲(1)㹼(3) *ཎ✏ཷ 2014 ᖺ 5 ᭶ 12 ᪥ *1 ࠛ739-2116 ᮾᗈᓥᕷ㧗ᒇ࠺ࡵࡢ㎶ 1 ␒ E-Mail [email protected] 近畿大学次世代基盤技術研究所報告 Vol. 5（2014）79－88
ᮏ◊✲࡛ᐃࡋ࡚࠸ࡿࢥࣥࢡ࣮ࣜࢺࡢ“ࡦࡧࢃࢀ”ࡣ㸪 ᆅ㟈ຊ࡞ࡢࡁ࡞ຊࡀస⏝ࡋ࡞ࡃ࡚ࡶⓎ⏕ࡍࡿࠕ⇱ ࡦࡧࢃࢀࠖࡸࠕ⦰ࡦࡧࢃࢀࠖ࡞ࡢᚤ⣽࡞ࡦࡧࢃࢀࢆ ᣦࡋ㸪ࡇࢀࡽࡀࢥࣥࢡ࣮ࣜࢺᵓ㐀≀ࡢᬒほࢆᦆࡡ㸪ᵓ㐀 ≀ࡋ࡚ࡢ๛ᛶపୗࢆᘬࡁ㉳ࡇࡍཎᅉࡶ࡞ࡗ࡚࠸ࡿ㸬 ㏻ᖖ㸪ࡦࡧࢃࢀᢚไࡣྜᡂ⧄⥔ࡸ㗰⧄⥔ࢆΰධࡍࡿࡀ㸪 ᮏ◊✲࡛ࡣኳ↛⣲ᮦ࡛࠶ࡿࠕ➉⧄⥔ࠖࢆ⏝ࡍࡿࡇࡀ ≉Ⰽ࡛࠶ࡿ㸬ࡇࡢࡁၥ㢟࡞ࡿࡢࡣ㸪ࢥࢫࢺ⪏ஂ ᛶ࡛࠶ࡿ㸬ࢥࢫࢺࡢ㠃ࡣ㸪᪥ᮏ࡛ࡣၥ㢟࡞࠸㸬ᡂ㛗ࡀ᪩ ࡃ㸪ຍᕤࡀᐜ᫆࡞ࡢ࡛㸪పࢥࢫࢺ࡛㔞➉⧄⥔ࢆ⏕⏘ ࡍࡿࡇࡣྍ⬟࡛࠶ࡿ㸬୍᪉ࡢ⪏ஂᛶࡢ㠃࡛࠶ࡿࡀ㸪 ࣝ࢝ࣜᛶࡢࢭ࣓ࣥࢺࡢ୰ࢭ࣮ࣝࣟࢫࡀᡂศࡢ➉ࢆΰ ධࡍࡿࡇ࡛㸪⤌⧊ࡀ◚ቯࡉࢀᙉᗘࡀୖࡀࡽ࡞࠸㛗 ᮇⓗ࡞ࡦࡧࢃࢀᢚไࡀ㊊ࡍࡿࡇࡀ᪤ ࡢ◊✲࡛ࡣᣦ ࡉࢀ࡚࠸ࡿ(4)㸬ࡋࡋ࡞ࡀࡽ㸪ⴭ⪅ࡽࡀࡇࢀࡲ࡛⾜ࡗ࡚ ࡁࡓᇶ♏ⓗ࣭ணഛⓗ࡞◊✲࡛ࡣ㸪ᐇ㦂ࢹ࣮ࢱࡀ༑ศࡣ ゝ࠼ࡎ㸪᪤ ࡢ◊✲࡛ᣦࡉࢀࡓၥ㢟Ⅼࡀ᫂☜ࡣ࡞ࡽ ࡞ࡗࡓ㸬ࡑࡇ࡛㸪㐣ᖺᗘࡢᐇ㦂ⓗ◊✲(5),(6)ࢆ᭦Ⓨᒎࡉ ࡏ࡚ᐇ㦂ࢹ࣮ࢱࢆ✚ࡋ㸪ࠕ➉⧄⥔⿵ᙉࢭ࣓ࣥࢺ」ྜᮦ ᩱࠖࡢᐇ⏝ྥࡅ࡚ࡢ㊊ࡀࡾࡋࡓ࠸㸬 ᮏ◊✲࡛ࡣ㸪➉⧄⥔ࢆࢥࣥࢡ࣮ࣜࢺΰධࡍࡿࡇ ࡼࡾ㸪పࢥࢫࢺ࡛ⴠࡸࡦࡧࢃࢀࡢ㜵Ṇ㸪ຊᏛᛶ≧ࡢᨵ ၿࡀ࡛ࡁࡿ᪉⟇ࡀ࡞࠸ࢆ⪃࠼㸪➉⧄⥔⿵ᙉ」ྜᮦᩱࡢ 〇㐀㛵ࡍࡿྍ⬟ᛶࢆ᥈ࡾ㸪ᇶ♏ⓗ࡞ᐇ㦂ࢆ⾜ࡗࡓ㸬 ᐇ㦂ᴫせ 㐣ᖺᗘ⾜ࡗࡓᐇ㦂࡛ࡣ㸪⏝ࡋࡓ⧄⥔ࡀ⣽ࡃ㸦0.3mm ゅ㸧㸪⿵ᙉᮦࡋ࡚᭷ຠస⏝ࡋ࡞ࡗࡓ⪃࠼࡚࠸ࡿ㸬 ࡑࡇ࡛㸪ᐇ㦂ኚᩘࡢ୍ࡘࡋ࡚㸪⧄⥔ᙧ≧ࡸ⧄⥔ᑍἲࢆ ィ⏬ࡍࡿ㸬➉ࢆ≉ᐃࡢᙧ≧ຍᕤࡍࡿࢥࢫࢺࡀୖࡀࡿ ࡓࡵ㸪ᮏ◊✲ࡢ⫼ᬒࢆ㋃ࡲ࠼⌧ᐇⓗ࡛ࡣ࡞࠸ࡢ࡛㸪⮬↛ ⣲ᮦࢆάࡋࡓ⧄⥔ᙧ≧ࢆ⪃࠼ࡿ㸬ኴࡉࡸ㛗ࡉࢆኚᩘ ࡋ࡚㸪⿵ᙉຠᯝࡢ㐪࠸ࢆ☜ㄆࡍࡿ㸬ࡲࡓ㸪㐣ᖺᗘ⾜ࡗࡓ ᐇ㦂࡛ࡣ㸪⢒㦵ᮦ㸦◁㸧ࢆ㏻ᖖࡢࢥࣥࢡ࣮ࣜࢺ୪ࡳ ධࢀࡓ㸬ᕤࢆ㋃ࡲ࠼㸪㦵ᮦࡀ㔞ධࡿ⧄⥔ࡀ᭷ຠ స⏝ࡋ࡞࠸ࡓࡵ㸪㦵ᮦ㔞ࢆపῶࡋ࡚➉⧄⥔ࡢ⿵ᙉࡀ᭷ ຠᶵ⬟ࡍࡿࡼ࠺࡞ࠕࢭ࣓ࣥࢺ」ྜᮦᩱࠖࡋ࡚ࡢㄪྜ タィ᪉ἲࢆᥦࡋࡓ࠸㸬 ᐇ㦂ィ⏬࠾ࡼࡧᴫせ ᮏㄽ࡛ࡣ㸪ḟࡢ4ࡘࡢ㡯㸦(a)㹼(d)㸧ࡘ࠸࡚ᐇ㦂ࢆ⾜ ࠸᳨ウࡋࡓ㸬 D ᕤᛶ㛵ࡍࡿ᳨ウ㸦ணഛᐇ㦂㸧 ࢥࣥࢡ࣮ࣜࢺ୰ࡢ✵Ẽࢆᢤࡃ᪉ἲࡣ2✀㢮࠶ࡿ㸬ືࢆ ࠼ࡿ᪉ἲ㸪Ꮫΰᮦࢆධࢀ࡚✵Ẽศᩓࡍࡿࡇ ࡛ᢤࡅࡸࡍࡃࡍࡿ᪉ἲ࡛࠶ࡿ㸬㐣ཤࡢᐇ㦂࡛ࡣ㸪ືࢆ ࠼ࡍࡂࡿ㔜࠸㦵ᮦࡣỿࡳ㸪㍍࠸➉ࡣᾋ࠸࡚ࡃࡿࡓࡵ㸪 ༑ศ࡞ືࡣ࠼ࡎ౪ヨయࢆస〇ࡋ࡚࠸ࡓ㸬ࡇࡢࡓࡧࡢ ◊✲࡛ࡣ㸪〇సࡢ᪉ἲື㛫ࢆ⟶⌮ࡋ࡚㸪ෆ㒊≧ែ 㐪࠸ࡀ⏕ࡌࡿ࠺ࢆ᳨ドࡍࡿ㸬ࢸ࣮ࣈࣝࣂࣈࣞ ࣮ࢱ࣮ࡏ࡚㸪0㸪30㸪60㸪120⛊ື㛫ࢆኚ࠼࡚ ౪ヨయࢆసᡂࡋ㸪ᐇ㦂⤖ᯝࡢ㐪࠸ࡸෆ㒊ࡢ≧ែ㸦✵Ẽࡢ ᢤࡅලྜࡸ⧄⥔࣭㦵ᮦࡢศ㞳࡞㸧ࢆほᐹࡍࡿ㸬 E ➉⧄⥔ᙧ≧ࡢ㐪࠸ࡼࡿᙳ㡪㸦$ࢩ࣮ࣜࢬ㸧 ➉⧄⥔ࡀ⿵ᙉᮦࡋ࡚᭷ຠാࡃࡓࡵ㸪➉⧄⥔ࡢ᩿ 㠃ᙧ≧ࡸᑍἲࡘ࠸᳨࡚ウࡍࡿ㸬ᐇ㦂ኚᩘࡢ୍ࡘࡋ࡚㸪 ⧄⥔ᙧ≧ࡸ⧄⥔ᑍἲࢆᵝࠎኚࡉࡏࡓ౪ヨయࢆィ⏬ࡋ㸪 ᙉᗘヨ㦂ࢆ⾜࠺㸬➉ࢆ≉ᐃࡢᙧ≧ຍᕤࡍࡿࢥࢫࢺࡀ ୖࡀࡿࡓࡵ㸪ᮏ◊✲ࡢ⫼ᬒࢆ㋃ࡲ࠼⌧ᐇⓗ࡛ࡣ࡞࠸ࡢ࡛㸪 ⮬↛⣲ᮦࢆάࡋࡓ⧄⥔ᙧ≧ࢆᥦࡋࡓ࠸㸬ኴࡉࡸ㛗ࡉ ࢆኚᩘࡋࡓ㸪⿵ᙉຠᯝࡢ㐪࠸ࢆ☜ㄆࡍࡿ㸬 ⧄⥔ࡢ᩿㠃✚ࢆኚ࠼ࡓࡶࡢࡋ࡚㸪➉ࡦࡈ㸦Ǘ1.8mm㸧࣭ ྠ1/2࣭➉ࢳࢵࣉ㸦0.3mm×2.5mmࡢᯈ≧㸧ࢆ᳨ウࡋ࡚࠸ ࡿ㸬㐣ཤᐇ㦂ࡋࡓ➉⧄⥔㸦0.7mm×0.7mm㸧ẚࡿ 㸪ࡑࢀࡒࢀ⣙5㸪2.5㸪1.5ಸ⛬ᗘࡢ᩿㠃✚࡛࠶ࡾ㸪⿵ᙉ ຠᯝࡢ㐪࠸ࢆẚ㍑᳨ウ࡛ࡁࡿ㸬 F 㓄ྜタィࡢ᳨ウ㸦%ࢩ࣮ࣜࢬ㸧 ⢒㦵ᮦ㸦◁㸧ࢆ㏻ᖖࡢࢥࣥࢡ࣮ࣜࢺ୪ࡳධࢀࡓ㸬 ᕤࢆ㋃ࡲ࠼㸪㦵ᮦࡀ㔞ධࡿ⧄⥔ࡀ᭷ຠస⏝ࡋ ࡞࠸ࡓࡵ㸪㦵ᮦ㔞ࢆపῶࡋ࡚➉⧄⥔ࡢ⿵ᙉࡀ᭷ຠᶵ⬟ ࡍࡿࡼ࠺࡞ࠕࢭ࣓ࣥࢺ」ྜᮦᩱࠖࡋ࡚ࡢㄪྜタィ᪉ἲ ࢆᥦࡋࡓ࠸㸬ࡉࡽ㸪Ỉࢭ࣓ࣥࢺẚࡸ⧄⥔ΰධ㔞ࡶኚ ືせᅉࡋ࡚ㄪ〇ࡋ㸪ᇶ♏ࢹ࣮ࢱࡢ✚ࢆ⾜࠺㸬 G Ꮫΰࡀ➉ཬࡰࡍᙳ㡪㸦&ࢩ࣮ࣜࢬ㸧 3✀㢮ࡢ␗࡞ࡿΰࢆ⏝ࡋࡓࣔࣝࢱ࡛ࣝ➉ࡢ⾲㠃 ࢆ◳ࡵ࡚㸪1㸪6㸪12᭶⛬ᗘ㣴⏕ࡋࡓᚋ㸪➉ࡢᙉᗘࡀ ࡢࡼ࠺ኚࡍࡿ㸦࠶ࡿ࠸ࡣኚࡋ࡞࠸㸧ࢆ☜ㄆࡍ ࡿ㸬Ꮫΰࡣ㸪⏝㏵ᛂࡌࡓရ㉁つ᱁ࡀ࠶ࡾ㸪ᡂศ ࡶከᒱΏࡗ࡚࠸ࡿ㸬Cࢩ࣮ࣜࢬ࡛ࡣࠊᏛΰࡢࡢ ᡂศࡀ➉ࡢ⤌⧊ࡗ࡚ᙳ㡪ࡀ࠶ࡿࡢ㸦࠶ࡿ࠸ࡣᙳ㡪 ࡞࠸ࡢ㸧ࢆ㸪ᐇ㦂⤖ᯝ↷ࡽࡋ࡚⛉Ꮫⓗ࡞どⅬ࡛࣓࢝ ࢽࢬ࣒ࢆ᫂ࡽࡍࡿ㸬 ⏝ᮦᩱ ࢭ࣓ࣥࢺࡣ㸪ᬑ㏻࣏ࣝࢺࣛࣥࢻࢭ࣓ࣥࢺࢆ⏝ࡋࡓ㸬 ⢒㦵ᮦࡣ㸪ᗈᓥ┴ᗉཎᕷすᇛ⏫బ⏘ࡢ○▼㸪⣽㦵ᮦࡣ㸪 ᓥ᰿┴ோከ㒆ዟฟ㞼⏫㜿⏘ࡢຍᕤ◁࡛࠶ࡿ㸬ࡑࡢ≀⌮ ⓗᛶ㉁ࢆ⾲1㸪┿ࢆ┿1♧ࡍ㸬 ᐇ㦂࡛⏝ࡋࡓ➉ᮦᩱࡣ㸪⾲2♧ࡍྜィ5✀㢮ࢆ⏝ព ࡋ㸪ヨ㦂యࢆ〇సࡋࡓ㸬➉⧄⥔᮰ࡣ㸪➉ࢆ⧄⥔᪉ྥゎ ࡋ࡚㛗ࡉࢆษࡾࡑࢁ࠼ࡓࡶࡢ࡛㸪᩿㠃ᙧ≧ࡣ୍ᐃ࡛ࡣ࡞ ࠸㸦┿2㸧㸬⾲2ࡢᑍἲ㸦0.7mm0.7mm㸧ࡣ㸪᩿㠃ࢆ ▴ᙧ࡛⨨ࡁ࠼ࡓࡢᖹᆒ್࡛࠶ࡿ㸬
➉⧄⥔⿵ᙉࢭ࣓ࣥࢺ」ྜᮦᩱࡢㄪྜタィ ࡚ࡢㄪྜタィ࠾࠸࡚㸪Ỉࢭ࣓ࣥࢺẚ50%࡛༢Ỉ 㔞ࡣ242kg/m3㸪⣽㦵ᮦ⋡68%㸦Aࢩ࣮ࣜࢬ㸧㸪✵Ẽ㔞4% ࡛ඹ㏻ࡋࡓ㸬⧄⥔ࢆΰධࡍࡿᕤᛶࡀపୗࡍࡿࡇ ࡀ⪃࠼ࡽࢀࡿࡀ㸪ΰࡣ⏝ࡋ࡚࠸࡞࠸㸬ΰࡼ ࡿ➉⧄⥔ࡢᏛⓗస⏝ࡀᠱᛕࡉࢀ㸪ࡇࡢၥ㢟ࡣCࢩ࣮ࣜ ⾲1. 㦵ᮦࡢ≀⌮ⓗᛶ㉁ 㻝㻡 㻝㻜 㻡 㻞㻚㻡 㻝㻚㻞 㻜㻚㻢 㻜㻚㻟 㻜㻚㻝㻡 ཷ䛡─ ⣽㦵ᮦ 㻞㻚㻡㻞 㻝㻚㻝㻡 㻙 㻙 㻜 㻜 㻡 㻞㻥 㻡㻣 㻣㻣 㻥㻟 㻣 㻞㻚㻢㻝 ⢒㦵ᮦ 㻞㻚㻣㻞 㻜㻚㻡 㻝㻡 㻜 㻠㻠 㻡㻡 㻝 㻜 㻜 㻜 㻜 㻜 㻢㻚㻠㻟 ⢒⢏⋡ 㻲㻹 ✀ู ẚ㔜 㻔㼓㻛㼏㼙㻟㻕 ྾Ỉ⋡ 㻔㻑㻕 ྛ䜅䜛䛔䛻ṧ䜛㔜㔞ⓒศ⋡㻔㻑㻕 ᭱ᑍἲ 㻔㼙㼙㻕 ┿1. ᮏᐇ㦂࡛⏝ࡋࡓ㦵ᮦ ⾲2. ⏝ࡋࡓ➉⧄⥔ᮦᩱ ཌࡉ ᖜ 㛗ࡉ ➉⧄⥔᮰ 㸺⧄⥔᮰㸼 ➉ࡦࡈ 㸺➉Წ㸼 ➉ࡦࡈ 㸺➉Წ㸼 ➉ࡦࡈ 㸺➉Წ/㸼 ➉ࢳࢵࣉ 㸺➉ࢳࢵࣉ㸼 㸨㸺࢝ࢵࢥ㸼ෆࡣࠊᮏㄽ୰࡛ࡢ⾲グ ȭ 㸦༙ศ࢝ࢵࢺ㸧 ᩿㠃 ᙧ≧ ⧄⥔✀㢮㸨 ᑍἲ PP ࢫ࣌ ࢡࢺẚ ┿ ȭ 㸦༙ศ࢝ࢵࢺ㸧 ȭ ┿ 2. ᮏᐇ㦂࡛⏝ࡋࡓ➉⧄⥔ ⾲3-1. ㄪྜ⾲(A,Bࢩ࣮ࣜࢬ) Ỉ 㼃 䝉䝯䞁䝖 㻯 ⣽㦵ᮦ 㻿 ⢒㦵ᮦ 㻳 ⧄⥔ 㻮㻲 ΰ 㻜㻚㻜 㻥㻥㻥 㻠㻥㻤 㻜㻚㻜 㻙 㻝㻚㻜 㻥㻤㻞 㻠㻤㻥 㻥㻚㻟 㻙 㻠㻜㻚㻜 㻡㻤㻤 㻥㻟㻠 㻙 㻤㻜㻚㻜 㻝㻝㻣㻢 㻟㻝㻝 㻙 㻝㻜㻜㻚㻜 㻝㻠㻣㻜 㻙 㻙 㻠㻜㻚㻜 㻡㻣㻤 㻥㻝㻤 㻙 㻤㻜㻚㻜 㻝㻝㻡㻡 㻟㻜㻢 㻙 㻝㻜㻜㻚㻜 㻝㻠㻠㻠 㻙 㻙 ༢㔞㻔㼗㼓㻛㼙㻟㻕 Ỉ䝉䝯䞁䝖ẚ 㼃㻛㻯 䠄䠂䠅 ⣽㦵ᮦ⋡ 㼟㻛㼍 䠄䠂䠅 ⧄⥔ ΰධ㔞 㻔㼢㼛㼘㻑㻕 㻡㻜 㻢㻤㻚㻜 㻞㻠㻞 㻠㻤㻠 㻜㻚㻜 㻥㻚㻟 䝅䝸䞊䝈 㻭 㻜㻚㻜 㻝㻚㻜 㻮 ⾲3-2. ㄪྜ⾲(Cࢩ࣮ࣜࢬ) Ỉ 㼃 䝉䝯䞁䝖 㻯 ⣽㦵ᮦ 㻿 ⢒㦵ᮦ 㻳 ⧄⥔ 㻮㻲 䠉 㻭㻱㻔䊠✀㻕 㻭㻱ῶỈ㻌ᶆ‽ᙧ㻔䊠✀㻕 㧗ᛶ⬟㻭㻱ῶỈ ༢㔞㻔㼗㼓㻛㼙㻟㻕 㻡㻜 㻢㻤㻚㻜 㻞㻠㻞 㻠㻤㻠 㻥㻥㻥 㻙 㻙 䠟 㻙 䝅䝸䞊䝈 ⧄⥔ ΰධ㔞 㻔㼛㻛㼢㼛㼘㻚㻕 Ỉ䝉䝯䞁䝖ẚ 㼃㻛㻯 䠄䠂䠅 ⣽㦵ᮦ⋡ 㻿㻛㼍 䠄䠂䠅 ΰ
ࢬ࡛ィ⏬ࡋ࡚࠸ࡿࡓࡵ㸪A,Bࢩ࣮ࣜࢬ࡛ᐇ㦂ࡍࡿࡍ࡚ࡢ ㄪྜ࡛ΰࡣ⏝ࡋ࡞࠸ࡇࡋࡓ㸬 ➉ ⧄ ⥔ ࡢ ㄪ ྜ 㔞 ࡣ 㸪 ᐜ ✚ ΰ ධ 㔞 ࢆ ➉ ࡢ ᐦ ᗘ ࢆ 1200kg/m3㸦ᐇ㦂࡛⏝ࡋࡓ㛗ࡉ30mmࡢ➉ࡦࡈ10ᮏ࠶ ࡓࡾࡢᐜ✚㔜ࡉࢆᐇ ࡋ࡚⟬ฟ㸧ࡋ࡚㉁㔞⟬ࡋ ࡚Ỵᐃࡋࡓ㸬ࢩ࣮ࣜࢬࡢ㓄ྜ⾲ࢆ⾲3♧ࡍ㸬 ヨ㦂య〇స ࢥࣥࢡ࣮ࣜࢺࡢ⦎ࡾΰࡐࡣ㸪ᙉไ᧠ᢾᆺࢥࣥࢡ࣮ࣜࢺ ࣑࢟ࢧࢆ⏝࠸࡚⾜ࡗࡓ㸬ጞࡵ㸪◁ࢭ࣓ࣥࢺ࠾ࡼࡧỈ ࢆᢞධࡋ2 ศ㛫ΰࡐࡓᚋ㸪࣑࢟ࢧࢆṆࡵ㸪➉⧄⥔ࢆᡭ࡛ ࡄࡋ࡞ࡀࡽᢞධࡋࡓ㸬⧄⥔ᢞධᚋ㸪1 ศ㛫⦎ࡾࡲ ࡐ㸪᭱ᚋ⢒㦵ᮦࢆᢞධࡋ3 ศ㛫⦎ࡾΰࡐࡓ㸬⦎ࡾΰࡐ ࡀ⤊ࢃࡗࡓࣇࣞࢵࢩࣗࢥࣥࢡ࣮ࣜࢺࡣ㸪࣑࢟ࢧࡽ⦎ࡾ ᯈྲྀࡾฟࡋ㸪ᡭ⦎ࡾ࡛ᗘయࢆᨩᢾᚋ㸪ࢫࣛࣥࣉࡢ ᐃࢆ⾜ࡗࡓ㸬ࢫࣛࣥࣉヨ㦂⤊ᚋ㸪ᙉᗘヨ㦂⏝ᆺᯟ ᡴ㎸ࢇࡔᚋ㸪ࢸ࣮ࣈࣝࣂࣈ࣮ࣞࢱ࣮ࡢୖ㍕ࡏ࡚ື ࢆ࠼⥾ᅛࡵࢆ⾜ࡗࡓ㸬3.1 ࡛ᚋ㏙ࡍࡿࡼ࠺㸪ணഛᐇ㦂 ࡼࡿ᳨ドࢆ㋃ࡲ࠼࡚㸪ᡴ㎸ࡳࡢື㛫ࡣ120 ⛊ ࡋࡓ㸬 ᅽ⦰ヨ㦂ヨ㦂⏝ヨ㦂యࡣ㸪φ100×200mm ࡢ㍍㔞 ᆺᯟ㸪᭤ࡆヨ㦂⏝ヨ㦂యࡣ㸪100×100×400mm ࡢ㗰〇ᆺ ᯟ࡛〇సࡋࡓ㸬ᰕ౪ヨయࡣ㸪ࡑࢀࡒࢀ3 యࡎࡘస〇ࡋ㸪 ◳ࢥࣥࢡ࣮ࣜࢺࡢᙉᗘ್ࡣ3 యࡢᖹᆒ್ࡋ࡚⟬ฟࡋ ࡓ㸬ࡓࡔࡋ㸪᭤ࡆ౪ヨయࡣᆺᯟᩘࡢ㒔ྜࡼࡾ1 యࡎࡘ స〇ࡋ࡚࠸ࡿ㸬ᙉᗘヨ㦂⏝ヨ㦂యࡣ㸪ᡴタᚋ3 ᪥┠⬺ ᆺ㸪ヨ㦂ᮦ㱋ࡲ࡛Ỉ୰㣴⏕ࡋࡓ㸬ᮦ㱋28 ᪥┠࡛࡚ࡢᙉ ᗘヨ㦂ࡣ⾜ࡗࡓ㸬 ᐇ㦂⤖ᯝ࠾ࡼࡧ⪃ᐹ ື㛫ᙉᗘࡢ㛵ಀ㸦ணഛᐇ㦂㸧 ணഛᐇ㦂ࡘ࠸࡚㸪ᆺᯟᡴ㎸ࡳࡢື㛫ᙉ ᗘࡢ㛵ಀࢆᅗ2♧ࡍ㸬࡞࠾㸪ヨ㦂యA3㸪A4ࡣ0⛊30 ⛊ࡢస〇ࡣ⾜ࡗ࡚࠸࡞࠸ࡢ࡛㸪60⛊120⛊ࡢࢹ࣮ࢱࡢ ࡳ♧ࡍ㸬ࡲࡓ㸪ᅗ୰ࡢ୍Ⅼ㙐⥺ࡣ⧄⥔ࢆධࢀ࡞࠸ࣉ࣮ࣞ ࣥࢥࣥࢡ࣮ࣜࢺ㸦A0㸧ࡢᙉᗘࢆ♧ࡋ࡚࠸ࡿ㸬 ᅗ2ࡼࡾ㸪⧄⥔ࢆධࢀࡓࡇࡼࡾᙉᗘࡣୖ᪼ࡋ㸪 ࡑࡢྜࡣື㛫ࢆ㛗ࡃࡍࡿࡁࡃ࡞ࡗ࡚࠸ࡿഴ ྥࡀぢࡽࢀࡿ㸬ࡇࢀࡣ㸪ືࡍࡿࡇࡼࡾᚎࠎෆ㒊 ࡢ✵Ẽ㔞ࡀపୗࡋ㸪ᮦᩱࡀ⥾ᅛࡲࡗࡓࡓࡵ⪃࠼ࡽࢀࡿ㸬 ࡓࡔࡋ㸪A1㸦⧄⥔᮰㸧ࡢ120⛊ືࡋࡓࡶࡢࡣపୗࡋ࡚ ࠸ࡿ㸬ࡲࡓ㸪A2㸦➉ࢳࢵࣉ㸧ࡢ60⛊ືࡋࡓࡶࡢࡣ⧄⥔ ࢆධࢀ࡞࠸ࡶࡢࡼࡾᙉᗘࡀపୗࡋ࡚࠸ࡿ㸬ࡇࢀࡽࡢཎᅉ ࡣ㸪࠶࡛⪃ᐹࡍࡿࡼ࠺㸪A1A2࡛⏝ࡋ࡚࠸ࡿ⧄⥔ ࡢᢠ࣓࢝ࢽࢬ࣒ࡀࡣ␗࡞ࡿࡓࡵ⪃࠼ࡽࢀࡿ㸬ࡼ ࡃື⥾ᅛࡵࢆ⾜ࡗࡓࢥࣥࢡ࣮ࣜࢺࡣ㸪◳ࢥࣥࢡ࣮ࣜ ࢺࡢᙉᗘࡀ㧗࠸್ࢆ♧ࡍࡇࡣ㸪᪤ ࡢ◊✲࡛ࡶ☜ㄆࡉ ࢀ࡚࠸ࡿ(7)㸬ᮏᐇ㦂࠾࠸࡚ࡶ㸪➉⧄⥔ࡀᙉᗘᑐࡋ ࡚᭷ຠస⏝ࡍࡿࡶ㸪༑ศ࡞⥾ᅛࡵࢆ⾜࠺ࡇ࡛ ࡑࡢቑຍྜࡀ㧗ࡃ࡞ࡿഴྥࢆ♧ࡍࡇࡀ☜ㄆ࡛ࡁࡓ㸬 ௨ୖࡢ⤖ᯝࡼࡾ㸪ᮏㄽ᳨࡛ウࡍࡿ౪ヨయࡣ㸪ື㛫 120⛊࡛⥾ᅛࡵࢆ⾜࠺ࡇࡋࡓ㸬 㻞㻚㻢 㻞㻚㻤 㻟㻚㻜 㻟㻚㻞 㻟㻚㻠 㻟㻚㻢 㻟㻚㻤 㻠㻚㻜 㻜 㻟㻜 㻢㻜 㻥㻜 㻝㻞㻜 䞉 䞉 䞉 䞉 䞉 䡩 䞉 㼤㻔㻺 㻛 㼙 㼙 㻞㻕 ື㛫㻔⛊㻕 㻭㻝㻔⧄⥔᮰㻕 㻭㻞㻔➉䝏䝑䝥㻕 㻭㻟㻔➉Წ㻝㻛㻞㻕 㻭㻠㻔➉Წ㻕 ᅗ2. ౪ヨయసᡂࡢື㛫ᙉᗘࡢ㛵ಀ ➉⧄⥔ᙧ≧ࡢ㐪࠸ࡼࡿᙳ㡪㸦$ࢩ࣮ࣜࢬ㸧 ➉ᮦᩱࡢᙧ≧ࢆኚࡉࡏࡓAࢩ࣮ࣜࢬࡢᐇ㦂ࡘ࠸࡚㸪 ᮦ㱋28᪥┠ࡢ◳ࢥࣥࢡ࣮ࣜࢺࡼࡿྛ✀ᙉᗘ࠾ࡼࡧ༢ ᐜ✚㉁㔞ࢆ⾲4ࡲࡵ࡚♧ࡍ㸬࡞࠾㸪⾲4♧ࡍ್ࡣ㸪 ྛᮦᩱࡢヨ㦂యࢆ3యࡎࡘ㸦᭤ࡆᙉᗘヨ㦂యࡣ1యࡎࡘ㸧 సᡂࡋ㸪ᐇ㦂ࢆ⾜ࡗࡓᖹᆒ್࡛࠶ࡿ㸬 ᅗ3㸪⧄⥔ࡢ᩿㠃✚ࢆᶓ㍈ࡾ㸪ᅽ⦰㸪㸪᭤ࡆ ᙉᗘࡢ㛵ಀࢆࡑࢀࡒࢀࣉࣟࢵࢺࡍࡿ㸬ᚋ࡛⪃ᐹࡍࡿࡼ࠺ 㸪᩿㠃✚ࡀᑠࡉ࡞⧄⥔᮰㸦A1㸧➉ࢳࢵࣉ㸦A2㸧ࡢヨ 㦂యࡣ㸪ࡦࡧࢀࡢᙧᡂࡶ⧄⥔ࡀ◚᩿ࡍࡿࡀ㸪➉ ᲬࢆΰධࡋࡓA3㹼A5ヨ㦂య࡛ࡣ⧄⥔ࡀ◚᩿ࡍࡿࡇ࡞ ࡃ㸪ࢥࣥࢡ࣮ࣜࢺࡢ╔㸪࠶ࡿ࠸ࡣᦶ᧿ࡼࡾᢤࡅฟ ࡋ࡚ᙉᗘቑຍࡘ࡞ࡀࡗࡓ⪃࠼ࡽࢀࡿ㸬ࡇࡢࡼ࠺㸪 ᙉᗘࢆỴᐃࡍࡿ࣓࢝ࢽࢬ࣒ࡀ⧄⥔✀㢮ࡼࡗ࡚␗࡞ࡿࡓ ࡵ㸪࡚ࡢᐇ㦂⤖ᯝࢆࡦࡃࡃࡾ࡛ホ౯ࡣ࡛ࡁ࡞࠸ࡀ㸪 ࠾ࡼࡑ᩿㠃✚ࡀࡁ࠸᪉ࡀ㸪ᙉᗘ᭤ࡆᙉᗘࡣࡁ ࡃ࡞ࡗ࡚࠸ࡿࡇࡀࢃࡿ㸬 ⾲4. ◳ࢥࣥࢡ࣮ࣜࢺヨ㦂⤖ᯝ㸦Aࢩ࣮ࣜࢬ㸧 㻭䝅䝸䞊䝈 ⧄⥔ ΰධ㔞 㻔㼢㼛㼘㻑㻕 ⧄⥔ ✀㢮 ᅽ⦰ ᙉᗘ 㻔㻹㻼㼍㻕 ᭤䛢 ᙉᗘ 㻔㻹㻼㼍㻕 ᙉᗘ 㻔㻹㻼㼍㻕 ༢ᐜ✚ ㉁㔞㻌䃠 㻔㻖㻝㻜㻟㼗㼓㻛㼙㻟㻕 㻭㻜 㻜㻚㻜 䛺䛧 㻠㻣㻚㻝㻣 㻠㻚㻟㻣 㻞㻚㻤㻣 㻞㻚㻞㻥 㻭㻝 ⧄⥔᮰ 㻠㻡㻚㻢㻡 㻠㻚㻢㻥 㻞㻚㻥㻡 㻞㻚㻞㻤 㻭㻞 䝏䝑䝥 㻠㻞㻚㻢㻣 㻠㻚㻣㻟 㻞㻚㻥㻣 㻞㻚㻞㻤 㻭㻟 ➉Წ㻝㻛㻞 㻠㻠㻚㻞㻢 㻠㻚㻞㻜 㻟㻚㻣㻜 㻞㻚㻞㻢 㻭㻠 ➉Წ 㻠㻞㻚㻠㻝 㻠㻚㻥㻡 㻟㻚㻣㻤 㻞㻚㻟㻜 㻭㻡 ➉Წ㻸㻞㻜 㻟㻜㻚㻤㻠 㻠㻚㻤㻢 㻟㻚㻠㻡 㻞㻚㻟㻜 㻝㻚㻜
㻜 㻝㻜 㻞㻜 㻟㻜 㻠㻜 㻡㻜 㻞㻚㻜 㻞㻚㻡 㻟㻚㻜 㻟㻚㻡 㻠㻚㻜 㻠㻚㻡 㻡㻚㻜 㻡㻚㻡 㻢㻚㻜 㻜 㻜㻚㻡 㻝 㻝㻚㻡 㻞 㻞㻚㻡 㻟 䞉 䡯 䞉 㼗䞉 䡩 䞉 㼤㻔㻺 㻛 㼙 㼙 㻞㻕 䞉 䞉 䞉 䞉 䞉 䡩 䞉 㼤䞉 㻭 䞉 䢄 䞉 䡬 䞉 䡩 䞉 㼤㻔㻺 㻛 㼙 㼙 㻞㻕 ⧄⥔䛾᩿㠃✚㻔㼙㼙㻞㻕 ᭤䛢ᙉᗘ ᙉᗘ 㻞㻤᪥ᙉᗘ ᅗ3. ⧄⥔᩿㠃✚ᑐࡍࡿᙉᗘ ௨ୗAࢩ࣮ࣜࢬࡢྛヨ㦂ࡢᴫせ⪃ᐹࢆࡲࡵࡿ㸬 D ᅽ⦰ᙉᗘ ᅽ⦰ヨ㦂ࡣ㸪⬟ヨ㦂ᶵࡼࡾ㍕Ⲵࡋࡓ㸬⧄⥔ΰධ㔞 ࢃࡽࡎ㸪ྠࡌࡼ࠺࡞◚ቯ≧ἣ࡛࠶ࡗࡓ㸬ᅽ⦰ᙉᗘ ࡣ42.4㹼44.5MPa㸪ࣉ࣮ࣞࣥࢥࣥࢡ࣮ࣜࢺ㸦A0㸧ࡢ 47.2MPaẚ࡚㸪᭱㸯⛬ᗘపୗࡋࡓ㸬࡞࠾㸪A5ࡣ 30.8MPaẚ࡚ᴟ➃ప࠸ࡀ㸪ࡇࢀࡣ㣴⏕ᵴࡣ ᜏ ⨨ࡀ↓ࡃ㸪Ỉ ࡀ10Υ௨ୖపࡗࡓࡓࡵ⪃࠼ࡽ ࢀࡿ㸬୍⯡㸪⧄⥔⿵ᙉࢥࣥࢡ࣮ࣜࢺࡣ㸪⧄⥔㔞ࢆቑຍ ࡋ࡚ࡶᅽ⦰ᙉᗘࡢቑຍࡣࡈࡃࢃࡎ࡛࠶ࡗ࡚㸪⧄⥔ࡢΰ ධࡼࡾ⥾ᅛࡵࡀ༑ศ⾜ࢃࢀࡃࡃ㸪ᙉᗘࡀపୗࡍࡿ ࡇࡶ࠶ࡿࡇࡀ▱ࡽࢀ࡚࠸ࡿ㸬Aࢩ࣮ࣜࢬ࡛ࡣ㸪⢒㦵ᮦ ࡀධࡗ࡚࠸ࡿࡢ࡛⧄⥔ࡀධࡾ㎸ࡵࡿ✵㛫ࡀᑡ࡞ࡃ㸪ᆒ㉁ ศᩓࡋ࡞ࡗࡓ᥎ᐹࡉࢀࡿ㸬ࡲࡓ㸪ΰධ⧄⥔㔞ࡀᐜ ✚ࡢ1%ࡔࡗࡓࡓࡵ㸪⧄⥔ࡀᅽ⦰ᙉᗘᑐࡋ࡚༑ศ࡞⿵ᙉ ຠᯝࢆⓎࡍࡿࡇࡣ࡞ࡃ㸪ࡴࡋࢁࡦࡧࢃࢀࢆಁ㐍ࡍࡿ 㑇≀ࡢࡼ࠺࡞ᙺ࡛ᅽ⦰ᙉᗘࡢపୗࡀ㉳ࡇࡗࡓ⪃࠼ࡽ ࢀࡿ㸬 E ᭤ࡆᙉᗘ ᭤ࡆᙉᗘࡣ㸪⬟ヨ㦂ᶵࡼࡾ㍕Ⲵලࢆ⏝࠸୕➼ศ Ⅼ༢ㄪ᭤ࡆ㍕Ⲵࢆ⾜ࡗࡓ㸬୍⯡㸪ࢥࣥࢡ࣮ࣜࢺࡢ᭤ࡆ ᙉᗘᙉᗘࡣ┦㛵ᛶࡀ࠶ࡿࡀ㸪ᮏᐇ㦂࡛ࡣᙉ࠸┦ 㛵ᛶࡣぢࡽࢀ࡞ࡗࡓ㸬 ᭤ ࡆ ᙉᗘ ࡣ㸪 ≉ ప ࡗ ࡓA3 ࢆ㝖ࡃ㸪4.69㹼 4.95MPa㸪ࣉ࣮ࣞࣥ㸦A0㸧ࡢ4.37MPaẚ࡚1⛬ ᗘࡁࡃ࡞ࡾ㸪➉ࢆ1%ΰධࡍࡿࡇࡼࡾ㸪᭤ࡆᙉᗘࡀ 1⛬ᗘࡁࡃ࡞ࡿࡇࡀ☜ㄆ࡛ࡁࡓ㸬 F ᙉᗘ ヨ㦂ࡣ㸪ᅽ⦰ヨ㦂ྠࡌ⬟ヨ㦂ᶵࡼࡾ㍕Ⲵࡋ ࡓ㸬2.95㹼3.78MPa㸪ࣉ࣮ࣞࣥ㸦A0㸧ࡢ2.87MPaẚ ࡚㸪᭱3ࡁࡃ࡞ࡾ㸪1%⛬ᗘࡢ⧄⥔ΰධ࡛㧗࠸ᙉ ᗘቑຍࡀࡳࡽࢀࡓ㸬 ⧄⥔ࣔࣝࢱ࣐ࣝࢺࣜࢵࢡࢫࡼࡿ」ྜᮦᩱࡢᘬᙇ 㸦㸧ᙉᗘࢆホ౯ࡍࡿᑐࡋ࡚ΰྜ๎ࢆ㐺⏝ࡋ࡚⪃࠼ ࡿ㸬ࡦࡧࢃࢀⓎ⏕๓㸪⧄⥔ࡀ࣐ࢺࣜࢵࢡࢫ༑ศ ╔ࡋ࡚࠸ࡿ㸦⧄⥔࣐ࢺࣜࢵࢡࢫࡢࡦࡎࡳࡣ➼ࡋ࠸㸧 ௬ᐃࡍࡿ㸪➉⧄⥔ࢭ࣓ࣥࢺ」ྜᮦᩱࡢᘬᙇᙉᗘ㸦ǔc㸧 ࡣ୍⯡ḟᘧࡀᡂ❧ࡍࡿ(8)㸬 ) 1 ( 2 1 f f m f c KK V V V V V (1) ࡇࡇ㸪K2㸸⧄⥔ᙧ≧ࡼࡿಀᩘ㸪K1㸸⧄⥔㓄ྥຠ ᯝಀᩘ㸪Vf㸪Vm㸸⧄⥔㸪࣐ࢺࣜࢵࢡࢫࡢᛂຊ㸪Vf㸸⧄ ⥔ࡢయ✚ ࡇࡢΰྜ๎ᇶ࡙࠸࡚㸪ᙉᗘ࠾࠸࡚➉⧄⥔ࡀ ᢠᐤࡍࡿ㈇ᢸᙉᗘࡢྜࢆィ⟬ࡋ࡚ࡳࡿ㸬 ᐇ㦂ᚋࡢ㠃ࢆぢࡿ㸪᩿㠃✚ࡀᑠࡉ࡞⧄⥔᮰㸦A1㸧 ➉ࢳࢵࣉ㸦A2㸧ࡢヨ㦂యࡣ㸪ࢇࡍ࡚ࡢ⧄⥔ࡀ ◚᩿ࡋ࡚࠸ࡓ㸦ᅗ4ղࡢ≧ែ㸧㸬୍᪉㸪➉ᲬࢆΰධࡋࡓA3 㹼A5ヨ㦂య࡛ࡣ⧄⥔ࡀ◚᩿ࡍࡿࡇ࡞ࡃ㸪ࢥࣥࢡ࣮ࣜࢺ ࡢ╔㸪࠶ࡿ࠸ࡣᦶ᧿ࡼࡾᢤࡅฟࡋ࡚ᙉᗘቑຍࡘ ࡞ࡀࡗࡓ⪃࠼ࡽࢀࡿ㸦ᅗ4ճࡢ≧ែ㸧㸬ࡲࡓ㸪୍␒ኴ࠸ ➉Წ㸦A4㸧࡛ࡣ㸪⧄⥔ࡀࡃࡢᏐᢡࢀ᭤ࡀࡾ㸪⦪᪉ྥ ࡅ࡚࠸ࡿࡶࡢࡀఱᮏࡶほᐹࡉࢀࡓ㸦┿3㸧㸬 ᐇ㦂࡛ࡣ㸪⧄⥔✀㢮㛵ಀ࡞ࡃ㸪⧄⥔ࢆධࢀࡓࡶࡢࡣ ࠸ࡎࢀࡶධࢀ࡞࠸ࡶࡢẚ࡚ᙉᗘࡀ㧗ࡃ࡞ࡗࡓࡀ㸪 ᙉᗘቑศᐤࡍࡿ⧄⥔ࡢᢠᶵᵓࡣ⧄⥔ࡢኴࡉࡼࡗ ࡚␗࡞ࡗ࡚࠸ࡿ⪃࠼ࡽࢀࡿ㸬⧄⥔ࡀ⣽࠸⧄⥔᮰㸦A1㸧 ➉ࢳࢵࣉ㸦A2㸧࡛ࡣ㸪➉⧄⥔ࡢᘬᙇᙉᗘࡼࡾᙉᗘቑ ศࡀ㉳ࡇࡗࡓ㸬ࡲࡓ㸪᩿㠃✚ࡀࡁ࡞➉Წ㸦A3㹼A5㸧࡛ ࡣ㸪➉⧄⥔ࡣ◚᩿ࡏࡎ㸪࣐ࢺࣜࢡࢫࡢ╔ᢤࡅฟࡋ ᢠࡀᙉᗘቑศᐤࡋࡓ⪃࠼ࡽࢀࡿ㸬≉㸪᩿㠃✚ ࡀࡁ࡞➉Წ㸦A4㸧࡛ࡣ㸪ࡦࡧࢃࢀࡀ㛤࠸ࡓᚋ㸪➉⧄ ⥔ࡀ᭤ࡆᢠࢆ♧ࡋ㸦ᅗ4մࡢ≧ែ㸧㸪ࡇࡢᢠᛂຊ㸦ࢲ ࣎ᢠ㸧ࡀᙉᗘቑຍ᭦ຍࡉࢀࡓ⪃࠼ࡽࢀࡿ㸬ࡦ ࡧࢀ㠃࿘㎶ࡢࣔࣝࢱࣝࡼࡗ࡚ᣊ᮰ࡉࢀࡓᲬᮦࡢࢲ࣎ ᢠVdࡣ㸪ᮏᐇ㦂ࡢࡼ࠺࡞ࣔࣝࢱࣝᙉᗘࡀపࡃ㸦20MPa ᮍ‶㸧㸪⿵ᙉ➽ᙉᗘࡀప࠸㸦400MPaᮍ‶㸧ࡢሙྜ㸪ḟᘧ ࡛⡆༢ィ⟬ࡉࢀࡿ(9)㸬 d V =0.25 d2Vf (2) ࡇࡇ㸪d㸸⧄⥔ࡢ┤ᚄ㸪Vf㸸⧄⥔ࡢᙉᗘ ௨ୖ㸪ᮏᐇ㦂࡛ほᐹࡉࢀࡓ⌧㇟ࢆ㋃ࡲ࠼࡚㸪ྛヨ㦂య ࠾࠸࡚⧄⥔ࡀ㈇ᢸࡋ࡚࠸ࡿᙉᗘࡣ㸪ᘧ(1)ࢆࡶ௨ୗ ࡢᘧ(3)࡛⾲ࡍࡇࡍࡿ㸬ᘧ(3)ࡢ➨୍㡯ࡣࢥࣥࢡ࣮ࣜࢺ ࡢࡦࡧࢃࢀᙉᗘ㸦ᅗ4ձࡢ≧ែ㸧㸪➨㡯ࡣ⧄⥔◚᩿ࡲࡓ ࡣ╔ࡼࡿᙉᗘ㸦ᅗ4ղࡲࡓࡣճࡢ≧ែ㸧㸪ࡑࡋ࡚➨୕ 㡯ࡣ⧄⥔ࡢࢲ࣎ᢠ㸦ᅗ4մࡢ≧ែ㸧ࡼࡿᐤศࡋ࡚
ࡑࢀࡒࢀࡢ⣼ຍ࡛ィ⟬ࡍࡿ㸬 d f or t m m c V V E V W V JV V ( ) (3) ࡇࡇ㸪Vm㸸࣐ࢺࣜࢵࢡࢫࡢయ✚㸪E㸸⧄⥔ࡢ㐃⥆ ᛶ㸪ࣛࣥࢲ࣒ᛶ࡞㓄⨨ࡼࡿಀᩘ㸦᪤ ࡢ◊✲(9)ࡼࡾ0.41㸧㸪 t V 㸸⧄⥔ࡢ◚᩿ᙉᗘ㸦᪤ ࡢ◊✲(10)ࡼࡾ25MPa㸧㸪 W㸸 ⧄⥔ࡢ╔ᙉᗘ㸦➉Წࢥࣥࢡ࣮ࣜࢺࡢ╔ຊࡋ࡚᪤ ࡢ◊✲(3)ࡼࡾ0.35MPa㸧㸪
J
㸸⧄⥔ࢲ࣎ࡢ㈇ᢸྜ㸦ᐇ 㦂್ࢆࡶ0.03ࡋࡓ㸧㸪Vd㸸ࢲ࣎ᢠ㸦ᘧ(2)㸧 ࡇࡢᘧ(3)ࢆ⏝࠸࡚㸪ᙉᗘࢆィ⟬ࡋࡓࡶࡢࢆ⾲5㸪 ࡲࡓィ⟬್࠾ࡅࡿᙉᗘ㈇ᢸࡀศࡿࡼ࠺ࢢࣛࣇࡋ ࡓࡶࡢࢆᅗ5♧ࡍ㸬ࢥࣥࢡ࣮ࣜࢺ⧄⥔ࡢ㈇ᢸྜࡀᐃ 㔞ⓗィ⟬ࡍࡿࡇࡀ࡛ࡁ㸪ᐇ㦂⤖ᯝࡶࡼ࠸ᑐᛂࢆ♧ ࡋ࡚࠸ࡿࡇࡀศࡿ㸬 ⣽㦵ᮦ⋡ᙉᗘࡢ㛵ಀ㸦%ࢩ࣮ࣜࢬ㸧 ⣽㦵ᮦ⋡ࢆኚࡉࡏࡓB ࢩ࣮ࣜࢬࡢᐇ㦂ࡘ࠸࡚㸪ᮦ 㱋 28 ᪥┠ࡢ◳ࢥࣥࢡ࣮ࣜࢺࡼࡿྛ✀ᙉᗘ࠾ࡼࡧ༢ ᐜ✚㉁㔞ࢆ⾲6 ࡲࡵ࡚♧ࡍ㸬࡞࠾㸪⾲ 6 ♧ࡍ್ ࡣ㸪ྛᮦᩱࡢヨ㦂యࢆ3 యࡎࡘ㸦᭤ࡆᙉᗘヨ㦂యࡣ 1 య ࡎࡘ㸧సᡂࡋᐇ㦂ࢆ⾜ࡗࡓᖹᆒ್࡛࠶ࡿ㸬ヨ㦂᪉ἲࡣ㸪A ࢩ࣮ࣜࢬྠࡌ࡞ࡢ࡛ヲ⣽ࡣ┬␎ࡍࡿ㸬 ᅗ6㹼9 ࡣ㸪B ࢩ࣮ࣜࢬࡢኚືᅉᏊ࡛࠶ࡿ⣽㦵ᮦ⋡ࢆ ᶓ㍈ࡾ㸪༢ᐜ✚㉁㔞㸪ᅽ⦰ᙉᗘ㸪ᙉᗘ㸪ࡑࡋ ࡚᭤ࡆᙉᗘࢆࡑࢀࡒࢀࣉࣟࢵࢺࡋࡓࡶࡢࢆ♧ࡋ࡚࠸ࡿ㸬ʊ ࡣ↓⿵ᙉ㸦B0㸧㸪ŏࡣ⿵ᙉ㸦B1㸧ヨ㦂య࡛࠶ࡿ㸬ᅗ 6 ࡽ㸪⧄⥔ࢆ1%ΰධࡍࡿᐦᗘࡀᑠࡉࡃ࡞ࡾ㸪⢒㦵ᮦࡢ ྜࡀῶࡿ㸪㍍ࡃ࡞ࡗ࡚࠸ࡿࡇࡀࢃࡿ㸬ᅗ7 ࡣᅽ⦰ ᙉᗘࡢ㛵ಀ࡛࠶ࡿࡀ㸪⣽㦵ᮦ⋡ࡀప࠸⧄⥔ࢆΰධࡍࡿ ࡇ࡛ᙉᗘࡀపୗࡍࡿࡀ㸪80%࠶ࡿ࠸ࡣ 100%⢒㦵ᮦࡢ 㔞ࡀῶࡾ㸪ࣔࣝࢱࣝ㏆ࡃ࡞ࡿ⧄⥔ࡼࡿ⿵ᙉຠᯝࡀ ⾲ࢀ㸪⧄⥔ࢆධࢀࡿ࠺ࡀᙉᗘࡣ㧗ࡃ࡞ࡗ࡚࠸ࡿࡇࡀ ࢃࡿ㸬ᅗ8 ࡢᙉᗘࡶᅽ⦰ᙉᗘྠࡌഴྥࡀぢ࠼ࡿ ࡀ㸪ᙉᗘࡢቑຍࡣࢃࡎ࡛࠶ࡿ㸬ᅗ9 ࡣ᭤ࡆᙉᗘ࡛࠶ࡿ ᅗ4. ⧄⥔ΰධ㔞༢ᐜ✚㉁㔞 ┿ 3. ◚᩿㠃࠾ࡅࡿ➉ᲬࡢᵝᏊ ⾲5. ⧄⥔ࡢᢠᐤࡍࡿ㈇ᢸᙉᗘࡢィ⟬ ↓⿵ᙉ ⧄⥔᮰ ➉䝏䝑䝥 ➉Წ㻝㻛㻞 ➉Წ ➉Წ㻸㻞㻜 㻙 㻜㻚㻠㻥 㻜㻚㻢㻤㻢 㻝㻚㻞㻣 㻞㻚㻡㻠 㻝㻚㻞㻣 㻙 㻠㻞㻚㻤㻢 㻝㻝㻝㻚㻝 㻠㻢㻚㻤㻤 㻝㻢㻚㻢㻣 㻟㻝㻚㻞㻡 㻞㻚㻤㻣 㻞㻚㻥㻡 㻞㻚㻥㻣 㻟㻚㻣㻜 㻟㻚㻣㻤 㻟㻚㻠㻡 䃢㼙 㻞㻚㻤㻣 㻞㻚㻤㻣 㻞㻚㻤㻣 㻞㻚㻤㻣 㻞㻚㻤㻣 㻞㻚㻤㻣 㼂㼙 㻝㻚㻜㻜 㻜㻚㻥㻥 㻜㻚㻥㻥 㻜㻚㻥㻥 㻜㻚㻥㻥 㻜㻚㻥㻥 ィ 㻞㻚㻤㻣 㻞㻚㻤㻠 㻞㻚㻤㻠 㻞㻚㻤㻠 㻞㻚㻤㻠 㻞㻚㻤㻠 䃢㼠 㻝㻜㻚㻞㻡 㻝㻜㻚㻞㻡 㼂㼒 㻜㻚㻜㻝 㻜㻚㻜㻝 ィ 㻜㻚㻝㻜 㻜㻚㻝㻜 䃣 㻤㻢㻚㻠㻤 㻟㻜㻚㻣㻡 㻡㻣㻚㻢㻢 㼂㼒 㻜㻚㻜㻝 㻜㻚㻜㻝 㻜㻚㻜㻝 ィ 㻜㻚㻤㻢 㻜㻚㻟㻝 㻜㻚㻡㻤 䃢㼐 㻡㻚㻜㻢 㻞㻜㻚㻞㻡 㻡㻚㻜㻢 䃒 㻜㻚㻜㻟 㻜㻚㻜㻟 㻜㻚㻜㻟 ィ 㻜㻚㻝㻡 㻜㻚㻢㻝 㻜㻚㻝㻡 㻞㻚㻤㻣 㻞㻚㻥㻠 㻞㻚㻥㻠 㻟㻚㻤㻢 㻟㻚㻣㻢 㻟㻚㻡㻣 㻝㻚㻜㻜 㻝㻚㻜㻜 㻝㻚㻜㻝 㻜㻚㻥㻢 㻝㻚㻜㻜 㻜㻚㻥㻣 ᙉᗘ䠄㻯㼍㼘䠅 㻱㼤㼜㻛㻯㼍㼘 䝁䞁䜽䝸䞊䝖 ⧄⥔◚᩿ ⧄⥔╔ ⧄⥔䝎䝪 ᩿㠃✚ ⧄⥔䛾⣽㛗ẚ㻔䉭㻛㼐㻕 ᙉᗘ䠄㻱㼤㼜䠅 㻞㻚㻡㻜 㻞㻚㻣㻜 㻞㻚㻥㻜 㻟㻚㻝㻜 㻟㻚㻟㻜 㻟㻚㻡㻜 㻟㻚㻣㻜 㻟㻚㻥㻜 㻠㻚㻝㻜 ᙉ ᗘ 㻔㻺 㻛 㼙 㼙 㻞㻕 䝁䞁䜽䝸䞊䝖 ⧄⥔◚᩿ ⧄⥔╔ ⧄⥔䝎䝪 ᅗ5. ᙉᗘࡢ㈇ᢸ㸦ᘧ(3)ࡼࡿ㸧ࡀ㸪ᙉᗘྠࡌࡃ㸪ࢇ⧄⥔ΰධࡢᙳ㡪ࡣ࡞࠸㸬 ᪤ ࡢ◊✲(8)ࡼࡿ㸪⧄⥔⿵ᙉࢥࣥࢡ࣮ࣜࢺࡣ㸪༢ Ỉ㔞㸪༢ࢭ࣓ࣥࢺ㔞࠾ࡼࡧ⧄⥔ΰධ⋡ࡸ⧄⥔ᙧ≧ᛂ ࡌ࡚㸪ࢥࣥࢩࢫࢸࣥࢩ࣮౫Ꮡࡋࡓ᭱㐺⣽㦵ᮦ⋡ࡀᏑᅾ ࡍࡿ㸬⣽㦵ᮦ⋡ᙉᗘࡢ㛵ಀࡣ᫂☜࡛ࡣ࡞ࡃ㸪ᮏᐇ㦂 ⤖ᯝࡽࡶ㸪ඛ᳨ウࡋࡓA ࢩ࣮ࣜࢬ␗࡞ࡾ㸪⣽㦵ᮦ ⋡ࡀᙉᗘཬࡰࡍᐃ㔞ⓗ࡞ᙳ㡪ࡣ☜ㄆ࡛ࡁ࡞ࡗࡓ㸬 Ꮫΰࡀ➉ཬࡰࡍᙳ㡪㸦&ࢩ࣮ࣜࢬ㸧 ࣝ࢝ࣜ୰࠾࠸࡚㸪⾲㠃ఱࡶฎ⌮ࡋ࡚࠸࡞࠸➉ᮦ ࡣ㸪ࣝ࢝ࣜᡂศࡼࡗ࡚➉ࡢ⣽⬊ࡀࡉࢀ㸪ḟ➨ᘬ ᙇᙉᗘࡀపୗࡋ࡚࠸ࡃࡇࡀ᪤ ࡢ◊✲⪅ࡼࡾ☜ㄆࡉ ࢀ࡚࠸ࡿ㸬ࡋࡋ㸪ྂ࠸ᐇ㦂࡞ࡢ࡛ヲ⣽ࡀ࡛᫂࠶ࡾ㸪 ࡇࡢࡇࡘ࠸࡚ࡣࡑࡢᚋ◊✲ࡉࢀࡓࡀ࡞࠸㸬C ࢩ ࣮ࣜࢬ࡛ࡣ㸪ࡇࡢࡇࡘ࠸᳨࡚ドࡍࡿࡓࡵ㸪⡆༢࡞ヨ 㦂యࢆ〇సࡋ࡚㸪ᐇ㦂ࡍࡿࡇࡍࡿ㸬 C ࢩ࣮ࣜࢬࡣ㸪ඛࡢᐇ㦂ࡣヨ㦂య〇స᪉ἲࡀ␗࡞ࡿ ࡢ࡛㸪ࡣࡌࡵ◊✲ィ⏬ヨ㦂య〇స㸪ᐇ㦂ᴫせࢆㄝ᫂ ࡍࡿ㸬 D ◊✲ィ⏬ ᐇ㦂ࡢ᪉ἲࡣ㸪┤ᚄ160mm ⛬ᗘ㸪⫗ཌ 15mm ࡢ 3 ᖺ ┠ࡢᏗ᐀➉ࡽ㸪ᅗ10 ♧ࡍᑍἲ࡛ヨ㦂∦ࢆ๐ࡾฟࡋ㸪 ヨ㦂༊㛫ࡢ60mm 㒊ศࢆ┿ 4 ♧ࡍࡼ࠺࡞ᆺᯟ࡛㸪ࣔ ࣝࢱ࡛ࣝ‶ࡓࡋ࡚◳ࡉࡏࡓ㸬1㸪6㸪12 ᭶┠㸪◳ ࡋࡓࣔࣝࢱࣝࡽヨ㦂∦ࢆ3 ᮏࡎࡘྲྀࡾฟࡋ㸪ヨ㦂∦ࡢ ᩿㠃ᑍἲࢆ ᐃࡋᘬᙇヨ㦂ࢆᐇࡍࡿ㸬 PPPP ࠙༢ PPࠚ ᅗ10. ᘬᙇヨ㦂∦ ⾲6. ◳ࢥࣥࢡ࣮ࣜࢺヨ㦂⤖ᯝ㸦B ࢩ࣮ࣜࢬ㸧 㻮䝅䝸䞊䝈 ⧄⥔ ΰධ㔞 㻔㼢㼛㼘㻑㻕 ⣽㦵ᮦ⋡ 㻔㻑㻕 ᅽ⦰ ᙉᗘ 㻔㻹㻼㼍㻕 ᭤䛢 ᙉᗘ 㻔㻹㻼㼍㻕 ᙉᗘ 㻔㻹㻼㼍㻕 ༢ᐜ✚ ㉁㔞㻌䃠 㻔㻖㻝㻜㻟㼗㼓㻛㼙㻟㻕 㻮㻜㻙㻠㻜 㻠㻜㻚㻜 㻠㻟㻚㻢㻥 㻠㻚㻟㻥 㻟㻚㻝㻝 㻞㻚㻟㻢 㻮㻜㻙㻢㻤㻔㻭㻜㻕 㻢㻤㻚㻜 㻠㻣㻚㻝㻣 㻠㻚㻟㻣 㻞㻚㻤㻣 㻞㻚㻞㻥 㻮㻜㻙㻤㻜 㻤㻜㻚㻜 㻟㻡㻚㻝㻣 㻠㻚㻡㻜 㻟㻚㻟㻡 㻞㻚㻞㻤 㻮㻜㻙㻝㻜㻜 㻝㻜㻜㻚㻜 㻟㻞㻚㻢㻢 㻠㻚㻞㻡 㻟㻚㻝㻤 㻞㻚㻞㻟 㻮䠍㻙㻠㻜 㻠㻜㻚㻜 㻟㻡㻚㻠㻞 㻟㻚㻤㻜 㻞㻚㻢㻥 㻞㻚㻟㻟 㻮䠍㻙㻢㻤㻔㻭㻞㻕 㻢㻤㻚㻜 㻠㻞㻚㻢㻣 㻠㻚㻣㻟 㻞㻚㻥㻣 㻞㻚㻞㻤 㻮䠍㻙㻤㻜 㻤㻜㻚㻜 㻠㻜㻚㻟㻤 㻠㻚㻢㻝 㻟㻚㻣㻡 㻞㻚㻞㻣 㻮䠍㻙㻝㻜㻜 㻝㻜㻜㻚㻜 㻟㻢㻚㻠㻝 㻠㻚㻝㻞 㻟㻚㻟㻟 㻞㻚㻞㻞 㻜㻚㻜 㻝㻚㻜 䠄➉䝏䝑䝥䠅 ʊ↓⿵ᙉヨ㦂య(B0)㸪ŏ➉ࢳࢵࣉ 1%⿵ᙉヨ㦂య(B1) 㻞㻚㻞㻜 㻞㻚㻞㻠 㻞㻚㻞㻤 㻞㻚㻟㻞 㻞㻚㻟㻢 㻞㻚㻠㻜 㻠㻜 㻢㻜 㻤㻜 㻝㻜㻜 䞉 㻼 䞉 䢆 䞉 㼑䞉 䢋 䞉 䡻 䞉 䢆 㻔䞉 㼪 㻝 㻜 㻟㼗㼓 㻛 㼙 㻟㻕 ⣽㦵ᮦ⋡㻔㻑㻕 㻟㻜 㻟㻡 㻠㻜 㻠㻡 㻡㻜 㻠㻜 㻢㻜 㻤㻜 㻝㻜㻜 䞉 䡯 䞉 㼗䞉 䡩 䞉 㼤㻔㻺 㻛 㼙 㼙 㻞㻕 ⣽㦵ᮦ⋡㻔㻑㻕 ᅗ6. ⣽㦵ᮦ⋡ᑐࡍࡿ༢ᐜ✚㉁㔞ࡢኚ ᅗ 7. ⣽㦵ᮦ⋡ᑐࡍࡿᅽ⦰ᙉᗘࡢኚ 㻞㻚㻠 㻞㻚㻤 㻟㻚㻞 㻟㻚㻢 㻠㻚㻜 㻠㻜 㻢㻜 㻤㻜 㻝㻜㻜 䞉 䞉 䞉 䞉 䞉 䡩 䞉 㼤㻔㻺 㻛 㼙 㼙 㻞㻕 ⣽㦵ᮦ⋡㻔㻑㻕 㻟㻚㻢 㻟㻚㻤 㻠㻚㻜 㻠㻚㻞 㻠㻚㻠 㻠㻚㻢 㻠㻚㻤 㻠㻜 㻢㻜 㻤㻜 㻝㻜㻜 䞉 䢄 䞉 䡬 䞉 䡩 䞉 㼤㻔㻺 㻛 㼙 㼙 㻞㻕 ⣽㦵ᮦ⋡㻔㻑㻕 ᅗ8. ⣽㦵ᮦ⋡ᑐࡍࡿᙉᗘࡢኚ ᅗ 9. ⣽㦵ᮦ⋡ᑐࡍࡿ᭤ࡆᙉᗘࡢኚ
┿4. ᘬᙇヨ㦂యᆺᯟ ┿5. ᐇ㦂࡛⏝ࡋࡓᏛΰ ⾲7. Ꮫΰᡂศ⾲ 㻌 㻭㻱 㻌 㻭㻱 ῶỈ㻌 㧗ᛶ⬟ 㻭㻱 ῶỈ㻌 ᡂศ㻌 䜰䝹䜻䝹䜶䞊䝔䝹⣔㝜䜲䜸䞁 ⏺㠃άᛶ㻌 ኚᛶ䝸䜾䝙䞁䝇䝹䝩䞁㓟ྜ ≀㻌 䝫䝸䜹䝹䝪䞁㓟䜶䞊䝔䝹⣔ ྜ≀㻌 ᐦᗘ 䠄㼓㻛㼏㼙㻘㻞㻜䉝㻕㻌 㻝㻚㻜㻞䡚㻝㻚㻜㻢㻌 㻝㻚㻜㻢䡚㻝㻚㻝㻜㻌 㻝㻚㻜㻠䡚㻝㻚㻝㻝㻌 䜰䝹䜹䝸㔞 䠄䠂䠅㻌 㻝㻚㻝㻌 㻝㻚㻝㻌 㻝㻚㻠㻌 ሷ≀䜲䜸䞁㔞 䠄䠂䠅㻌 㻜㻚㻜㻝㻌 㻜㻚㻜㻟㻌 㻜㻚㻜㻝㻌 እほ㻌 ῐ㯤Ⰽᾮయ㻌 ᬯ〓Ⰽᾮయ㻌 ㉥〓Ⰽᾮ≧㻌 ⏝㔞㻌 㻯㽢㻜㻚㻜㻜㻢䠂㻌 㻯㽢㻝䠂㻌 㻯㽢㻜㻚㻥䠂㻌 ᆺᯟὶࡋ㎸ࢇࡔࣔࣝࢱࣝࡣ㸪Ꮫΰࢆῧຍࡋ㸪 ΰࡢᡂศࡀ➉ࡢ⣽⬊ཬࡰࡍᏛⓗస⏝ࢆ᳨ドࡍ ࡿ㸬ΰࡢ୰࡛ࡶᘓタ⌧ሙ࡛ẚ㍑ⓗ⏝ᗘࡀ㧗࠸ AE 㸪AE ῶỈ㸪㧗ᛶ⬟ AE ῶỈࡢ 3 ✀㢮ࢆ⏝࠸ࡿ㸦 ┿5㸧㸬ΰࡢᡂศࢆ⾲ 7 ♧ࡍ㸬ᐇ㦂࡛ࡣ㸪ΰ ࢆྵࡲ࡞࠸ࡶࡢ㸪3 ✀㢮ࡢΰࢆῧຍࡋࡓ㓄ྜࡋ ࡓࡶࡢ㸪4 ✀㢮ࢆసᡂࡍࡿ㸬 E 㓄ྜタィ 㓄ྜタィ࡛ࡣ㸪Ꮫΰ௨እࡢ᮲௳ࡣࡍ࡚ྠࡌ ࡋࡓ㸬ᮏ᮶㸪ᏛΰࡣῶỈຠᯝࡀ࠶ࡿࡢ࡛㸪⏝ ࡍࡿΰᮦࡢᛶ⬟ᛂࡌ࡚༢Ỉ㔞ࢆኚ࠼ࡿࡁ࡛࠶ࡿ ࡀ㸪ᅇࡢᐇ㦂ࡢ┠ⓗࡽ㸪ᕤᛶࡸ⪏ஂᛶࡣ㛵ಀ࡞࠸ ࡢ࡛㸪ΰࡢῧຍࡀ࠶ࡿ࣭࡞ࡋ௨እࡣ㓄ྜࢆኚ࠼࡚࠸ ࡞࠸㸦⾲3-2㸧㸬 Ꮫΰࡢ⏝㔞ࡣ㸪⾲7 ♧ࡍ࠾ࡾ࡛࠶ࡿࡀ㸪 ᮏᐇ㦂࡛ࡣᶆ‽㔞ࡢ1.5 ಸࢆῧຍࡋ࡚࠸ࡿ㸬ΰࡼ ࡿᙳ㡪ࢆ┤᥋ぢࡓ࠸ࡓࡵᑡࡋከࡵῧຍࡋࡓ㸬ࡇࢀࡼ ࡗ࡚㸪✵Ẽࡢศᩓຠᯝࡀࡁࡃ㸪ࢫࣛࣥࣉ್ࡸࣇ್࣮ࣟ ࡀィ ࡛ࡁ࡞࠸⛬ࡸࢃࡽ࠸ࢥࣥࢡ࣮ࣜࢺࡀฟ᮶ࡓࡀ㸪 ୖグࡢ㏻ࡾᕤᛶࡘ࠸࡚ࡣゐࢀ࡞࠸ࡢ࡛㸪ࡇࡢࡲࡲ㓄 ྜࢆኚ࠼ࡎᆺᯟᡴࡕ㎸ࢇࡔ㸬 F ౪ヨయ〇స ᙉไᨩᢾᆺ࣑࢟ࢧᮦᩱࢆᢞධࡋ㸪ࢭ࣓ࣥࢺ」ྜᮦᩱ ࢆ⦎ࡿ㸬ᘬᙇヨ㦂యࡢヨ㦂㒊ศࡀ㸪ࢭ࣓ࣥࢺ᥋ゐࡋ◳ ࡍࡿࡼ࠺ᆺᯟࢆ〇సࡋ㸪ࡇࡢᆺᯟෆ⦎ࡾୖࡀࡗࡓ ᮦᩱࢆᡴ㎸ࡴ㸬ᡴࡕ㎸ࡳ2 ᪥ᚋ⬺ᆺࡋ㸪20Υࡢᜏ ᐊ࡛㣴⏕ࡍࡿ㸦┿6㸧㸬࡞࠾㸪‵ᗘࡣㄪᩚࡋ࡚࠸࡞࠸ ࡢ࡛㸪30%⛬ᗘࡢ⇱ࡋࡓ≧ែ࡛㣴⏕ࡋ࡚࠸ࡿ㸬 ┿6. ᜏ ᐊෆࡢᵝᏊ (a) C0 (b) C1 (c) C2 (d) C3 ┿7. ᘬᙇヨ㦂∦ࡢ◚᩿≧ἣ • ‧• ‣•• ‣‧• ․•• ․‧• ‥•• • ‧••• ‣•••• ‣‧••• ․•••• ࣖщ ࡇ‚ ⁀ ‡ ․‛ ↡↉↮≋ȣ≌ ‵• ‵‣ ‵․ ‵‥ ᅗ11. ᘬᙇᛂຊ-ࡦࡎࡳ㛵ಀ
G ➉ᮦࡢᘬᙇヨ㦂 ᮦ㱋 28 ᪥┠ᘬᙇヨ㦂ࢆࡋࡓヨ㦂∦ࡢヨ㦂㒊ศࢆ ┿7 ♧ࡍ㸬ヨ㦂∦ࡈࡁ࡞㐪࠸ࡣ࡞ࡃ㸪᩿㠃ࢆ㍯ ษࡾࡍࡿࡼ࠺◚᩿ࡋࡓࡶࡢ㸪⦪᪉ྥ㛗ࡃࡅࡿ ࡼ࠺◚᩿ࡋࡓࡶࡢࡀࡑࢀࡒࢀ࡛࠶ࡗࡓ㸬 ྠࡌࢩ࣮ࣜࢬࡣ㸪3 ᮏࡎࡘヨ㦂ࡋࡓࡀ㸪ࡑࡢ࠺ࡕ 1 ᮏ ࡣࡦࡎࡳࢤ࣮ࢪࢆ2 ᯛ㈞ࡋ࡚㸪ࡦࡎࡳࢆィ ࡋࡓ㸬 ᅗ11 㸪ヨ㦂∦ 4 ᮏࡢᘬᙇᛂຊ-ࡦࡎࡳ㛵ಀࢆ♧ࡍ㸬ᮦ 㱋28᪥࡛ࡣ4ᮏࡶ๛ᛶࡣࢇኚࢃࡗ࡚࠸࡞࠸ࡇ ࡀศࡿ㸬 ྛࢩ࣮ࣜࢬ 3 ᮏࡢᘬᙇᙉᗘࢆᖹᆒࡋࡓࡶࡢࢆ㸪ᅗ 12 ♧ࡍ㸬ᘬᙇᙉᗘࡘ࠸࡚ࡣ㸪᫂ࡽᏛΰࢆῧ ຍࡋࡓࡶࡢ㸦C1㹼C3㸧ࡀపୗࡋ࡚࠸ࡿࡇࡀศࡿ㸬ࡓ ࡔࡋ㸪ࡇࡢཎᅉࡀΰࡢ⭉㣗ࡢᙳ㡪࠺ࡘ࠸࡚ ࡣ㸪⌧Ⅼࡢࢹ࣮ࢱࡔࡅ࡛ࡣุู⬟࡛࠶ࡿ㸬ᅗ13 㸪 ༢ᐜ✚㔜㔞ࢆẚ㍑ࡋࡓࡶࡢࢆ♧ࡍࡀ㸪ඛ㏙ࡓࡼ࠺ 㸪㓄ྜ᪉ἲ㸪ΰࡢῧຍ㔞㸪㣴⏕᪉ἲ࡞ࡢᙳ㡪 ࡽ㸪ΰࢆῧຍࡋࡓヨ㦂యࡣ㍍ࡃ࡞ࡗ࡚࠸ࡿ㸬ࡇࢀࡣ ✵Ẽࡀࣔࣝࢱࣝෆ㒊ศᩓࡋ࡚㸪✵Ẽ㔞ࡀቑ࠼࡚࠸ࡿࡓ ࡵ⪃࠼ࡽࢀࡿ㸬ࡋࡓࡀࡗ࡚㸪C1㹼C3 ࡢ➉∦ࡣ✵Ẽ ᗈࡃゐࢀ࡚࠸ࡿࡢ࡛㸪⇱ࡋࡸࡍࡃ࡞ࡗ࡚࠸ࡿࡶ⪃࠼ ࡽࢀ㸪ΰࡼࡿᏛⓗ࡞స⏝ࡀ࠶ࡿ࠺㸪ࡇࢀ ࡽᐇࡍࡿ6 ᭶┠㸪12 ᭶┠ࡢᐇ㦂⤖ᯝࡶ㋃ࡲ࠼㸪 ᳨ウࡋ࡚࠸ࡁࡓ࠸㸬 180 190 200 210 220 230 240 ‵• ‵‣ ‵․ ‵‥ ࡽࢌ ࣖщࡇ (N/ m m 2) ᅗ12. ᘬᙇᙉᗘࡢẚ㍑ ‣†• ‣†‧ ․†•• ․†•‧ ․†‣• ․†‣‧ ․†․• ․†․‧ ‵• ‵‣ ‵․ ‵‥ ҥˮ˳ᆢ ‚⁙‡⁕ ‥‛ ᅗ13. ༢య✚㔜㔞ࡢẚ㍑ ࡲࡵ ⮬↛⣲ᮦ࡛࠶ࡿ➉ࢆά⏝ࡍࡿࡇࢆ᳨ウࡋ㸪➉➽⧄⥔ ⿵ᙉࢥࣥࢡ࣮ࣜࢺࡢ㛤Ⓨࢆ⾜࠺ࡇࢆ┠ⓗ㸪ᇶ♏ⓗ࡞ ᐇ㦂ࢹ࣮ࢱࢆᐇ ࡋࡓ㸬ᐇ㦂ࣃ࣓࣮ࣛࢱࡋ࡚㸪➉ࡢᙧ ≧㸦᩿㠃✚㛗ࡉ㸧㸪⣽㦵ᮦ⋡࡞4ࡘࡢࢩ࣮ࣜࢬ࡛ヨ㦂 యࢆ〇సࡋ㸪ᇶᮏⓗ࡞≀ᛶࡋ࡚㸪◳ࢥࣥࢡ࣮ࣜࢺࡢ ᙉᗘ≉ᛶ㸦ᅽ⦰㸪㸪᭤ࡆ㸧㸪༢ᐜ✚㉁㔞࡞᳨ウ ࡋࡓ⤖ᯝ㸪ḟࡢࡇࡀ᫂ࡽ࡞ࡗࡓ㸬 1) ᕤᛶ㛵ࡍࡿ᳨ウ ⧄⥔ࢆධࢀࡿࡇࡼࡾ㸪ᙉᗘࡣୖ᪼ࡋ㸪ࡑࡢ ྜࡣື㛫ࢆ㛗ࡃࡍࡿࡁࡃ࡞ࡗࡓ㸬ࡇࢀ ࡣ㸪ືࡍࡿࡇࡼࡾෆ㒊ࡢ✵Ẽࡀᢤࡅ࡚ᮦᩱࡀ ⥾ᅛࡲࡗࡓࡓࡵ⪃࠼ࡽࢀࡿ㸬 2) ➉⧄⥔ᙧ≧ࡢ㐪࠸ࡼࡿᙳ㡪㸦Aࢩ࣮ࣜࢬ㸧 ࡦࡧࢃࢀ┤᥋ⓗ㛵ಀ࠶ࡿᙉᗘࡣ㸪2.95㹼 3.78MPa㸪ࣉ࣮ࣞࣥࢥࣥࢡ࣮ࣜࢺࡢ2.87MPaẚ ࡚㸪᭱3ࡁࡃ࡞ࡾ㸪1%⛬ᗘࡢ⧄⥔ΰධ࡛㧗 ࠸ᙉᗘቑຍࡀࡳࡽࢀࡓ㸬౪ヨయ◚ቯ㠃ࡢ⧄⥔ࡢ≧ែ ࡽ㸪➉Წࢆΰධࡋࡓヨ㦂య࡛ࡣ⧄⥔ࡀ◚᩿ࡍࡿࡇ ࡞ࡃ㸪ࢥࣥࢡ࣮ࣜࢺࡢ╔㸪࠶ࡿ࠸ࡣᦶ᧿ࡼ ࡾᢤࡅฟࡋ࡚ᙉᗘቑຍࡘ࡞ࡀࡗࡓ⪃࠼ࡽࢀࡿ㸬 3) ⣽㦵ᮦ⋡ᙉᗘࡢ㛵ಀ㸦Bࢩ࣮ࣜࢬ㸧 ⣽㦵ᮦ⋡ࡀࡁ࠸᪉ࡀ⧄⥔ࡣ᭷ຠస⏝ࡍࡿࡇࡣ ☜ㄆ࡛ࡁࡓ㸬 4) Ꮫΰࡀ➉ཬࡰࡍᙳ㡪㸦Cࢩ࣮ࣜࢬ㸧 Ꮫΰࢆῧຍࡋࡓࢥࣥࢡ࣮ࣜࢺᾐࡋࡓ➉ᮦࡢ ᘬᙇᙉᗘࡣ㸪᫂ࡽᏛΰ↓ῧຍᑐࡋ࡚ప ୗࡋࡓ㸬ࡓࡔࡋ㸪ࡇࡢཎᅉࡀΰࡢ⭉㣗ࡢᙳ㡪 ࠺ࡘ࠸࡚ࡣ㸪⌧Ⅼࡢࢹ࣮ࢱࡔࡅ࡛ࡣุู ⬟࡛࠶ࡿ㸬 ㅰ㎡ ヨ㦂యࡢ〇స࠶ࡓࡾ㸪୰ᅜࢧࣀࢸࢡࣀࢫᰴᘧ♫ ࡼࡾ㸪➉ᮦᩱ㦵ᮦࡢ୍㒊ࢆᥦ౪ࡋ࡚࠸ࡓࡔࡁࡲࡋࡓ㸬 ࡲࡓ㸪ヨ㦂య〇స࠾ࡼࡧᐇ㦂ᐇ㝿ࡋ㸪㏆␥ᏛᕤᏛ 㒊ᘓ⠏⏕⏘◊✲ᐊࡢH25ᖺᗘ༞ᴗ⏕༠ຊ࠸ࡓࡔࡁࡲࡋ ࡓ㸬ࡇࡇグࡋ࡚῝⏒ࡢㅰព⾲ࡋࡲࡍ㸬 ཧ⪃ᩥ⊩
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Study on Mechanical Properties of Bamboo Reinforced Concrete”, IABSE-IASS 2011 Symposium㸪 Proceedings DVD, (2011-9) (3) ᑎ㞞㸪༡ ᏹ୍,͆➉➽ࢥࣥࢡ࣮ࣜࢺࡢ╔ᛶ≧࠾ ࡼࡧ᭤ࡆᛶ≧㛵ࡍࡿᇶ♏ⓗ◊✲͇㸪ࢥࣥࢡ࣮ࣜࢺᕤ Ꮫᖺḟㄽᩥ㞟㸪Vol.33(DVD)㸪(2011-7) (4) ⣽⏣㈏୍㸪͆➉➽ࢥࣥࢡ࣮ࣜࢺᕤ͇㸪ಟᩍ♫᭩㝔㸪 (1942-2)
(5) Masakazu TERAI and Koichi MINAMI,͆Fracture Behavior and Mechanical Properties of Bamboo Fiber Reinforced Concrete”, Key Engineering Materials㸪Vols.488-489, Trans Tech Publications, Switzerland, (2011-9), pp.214-217 (6) ᑎ㞞㸪༡ ᏹ୍,͆➉⧄⥔⿵ᙉࢥࣥࢡ࣮ࣜࢺࡢຊᏛ ≉ᛶ㛵ࡍࡿᐇ㦂ⓗ◊✲͇㸪ࢥࣥࢡ࣮ࣜࢺᕤᏛᖺḟㄽ ᩥ㞟㸪Vol.34(DVD)㸪(2012-7) (7) ᚨ㔜ⱥಙ㸪ᕝୖ Ὥ㸪⏣୍ᮁ㸪͆ࡶࡳẆ⅊ΰࣔ ࣝࢱࣝࡢື⥾ᅛࡵຠᯝ㛵ࡍࡿ◊✲͇㸪ࢥࣥࢡࣜ ࣮ࢺᕤᏛᖺḟㄽᩥ㞟㸪➨24ᕳNo.1㸪(2002-7)㸪 pp.537-542 (8) ᑠᯘ୍㍜㸪͆⧄⥔⿵ᙉࢥࣥࢡ࣮ࣜࢺ㸫≉ᛶᛂ⏝㸫͇㸪 ࣮࣒࢜♫㸪(1981)
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