ᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࢆά⏝ࡋࡓ⏕⏘ᛶ࡜Ᏻ඲ᛶྥୖ࡬ࡢྲྀࡾ⤌ࡳᖹཱྀ ṇ㞝1࣭㇂ᒸ ᩄᖾ2࣭ᯘ ຾ᖾ31

ᅜᅵ஺㏻┬ᅄᅜᆅ᪉ᩚഛᒁ୰ᮧἙᕝᅜ㐨஦ົᡤ ๪ᡤ㛗 ࠛ 㧗▱┴ᅄ୓༑ᕷྑᒣ(PDLOKHLJXFKLP#POLWJRMS
2

ᅜᅵ஺㏻┬ᅄᅜᆅ᪉ᩚഛᒁ୰ᮧἙᕝᅜ㐨஦ົᡤ ᕤົ➨஧ㄢ㛗ࠛ 㧗▱┴ᅄ୓༑ᕷྑᒣ (PDLOWDQLRNDW#POLWJRMS    ᅜᅵ஺㏻┬ᅄᅜᆅ᪉ᩚഛᒁ୰ᮧἙᕝᅜ㐨஦ົᡤ ᘓタ┘╩ᐁࠛ 㧗▱┴ᅄ୓༑ᕷྑᒣ (PDLOKD\DVKLP#POLWJRMS
ᡃࡀᅜࡢᘓタᴗࡢປാ⅏ᐖࡣࠊᖺࠎῶᑡഴྥ࡟࠶ࡿࡶࡢࡢࠊປാ⅏ᐖⓎ⏕⋡ࠊࡑࢀ࡟ࡼࡿṚஸ⪅ᩘࡣ඲⏘ᴗࡢ୰࡛᭱ࡶ㧗࠸๭ྜࢆ༨ࡵ࡚࠾ࡾࠊ࡜ࡾࢃࡅᘓタ⌧ሙࡢࢡ࣮ࣞࣥసᴗ࡟㉳ᅉࡍࡿ஦ᨾࡣṆࡴࡇ࡜ࡀ࡞࠸ࠋࡲࡓࠊ᪥ᮏࡢᘓタᴗࡢ⌧ሙෆᑠ㐠ᦙࡣࠊᑠ㒊ᮦ໬ࡋࡓᘓタ㈨ᮦࢆ࡯ࡰேຊ࡛㐠ᦙࡋࠊ⤌❧ࡸゎయసᴗࢆ⾜ࡗ࡚࠾ࡾࠊ㐣㓞࡞⌧ሙ⎔ቃ࡟ᢿ㌴ࢆ࠿ࡅ࡚࠸ࡿࠋࡇࡢࡼ࠺࡞ᘓタ⌧ሙࡢ≧ἣࢆ㋃ࡲ࠼࡚ࠊࠕᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࠖࢆᑟධ࣭ά⏝ࡋࠊປാ⏕⏘ᛶࠊᏳ඲ᛶࡢྥୖࢆ┠ᣦࡋࡓヨ⾜ᕤ஦ࢆ⾜ࡗࡓࠋᮏ✏࡛ࡣࠊᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡢά⏝࡟ࡼࡿᘓタ⌧ሙࡢ⏕⏘ᛶ࡜Ᏻ඲ᛶࡢྥୖࢆ┠ᣦࡍྲྀ⤌࡟ࡘ࠸࡚⤂௓ࡍࡿࠋ

Key Words : stationary horizontal jib cranes, labor productivity㸪safetyࡿᘓタᶵᲔࢆ⏝࠸ࡓᘓタ⌧ሙࡀ⏕⏘ᛶ࣭Ᏻ඲ᛶ࡟୚࠼ࡿᙳ㡪ࢆᢕᥱࠊホ౯ࡋࡓࠋࡣࡌࡵ࡟ ᡃࡀᅜࡢᘓタ⌧ሙ࡛ࡣࠊᘓタ஦ᴗᚑ஦⪅ࡢ㧗㱋໬ࠊⱝ  ᢏ⾡᳨ウ఍ᖺධ⫋⪅ࡢῶᑡ࣭㞳⫋⪅ࡢቑຍ࡟ࡼࡿேᡭ୙㊊ࡀᴗ⏺඲  ᮏྲྀࡾ⤌ࡳࢆᐇ᪋ࡍࡿ࡟ᙜࡓࡾࠊᐃ⨨ᘧỈᖹࢪࣈࢡయࡢㄢ㢟࡜࡞ࡗ࡚࠸ࡿࠋ≉࡟ᢏ⬟ປാ⪅࡟࠾࠸࡚ࡣࠊປ࣮ࣞࣥ࠾ࡼࡧᘓタ⌧ሙࡢປാ⎔ቃ࡟㛵ࡍࡿ▱ぢࡀ῝࠸᭷ാ᫬㛫ࡸ㈤㔠➼ࡢປാ᮲௳ࠊసᴗຠ⋡ࡸᏳ඲⾨⏕➼ࡢປ㆑⪅ࢆ஺࠼ࠊᢏ⾡᳨ウ఍ࢆ㛤ദࡋࡓࠋാ⎔ቃࠊࡦ࠸࡚ࡣປാ⏕⏘ᛶࡸᏳ඲ᛶ࡞࡝ࡀᨵၿ࣭ྥୖᢏ⾡᳨ウ఍ࡢ㛤ദ┠ⓗࢆୗグ࡟♧ࡍࠋࡏࡎࠊᘓタ⌧ሙ඲య࡜ࡋ࡚ࡶ⏕⏘ᛶࡀୖࡀࡽࡎࠊᢏ⬟ປാ⪅ࡀാࡁࡀ࠸ࢆᣢ࡚࡞ࡃ࡞ࡾࠊධ⫋⪅ࡀῶᑡ࣭㞳⫋⪅㸺 ᢏ⾡᳨ウ఍ࡢ┠ⓗ 㸼ࡀቑຍ࡜࠸࠺ᝏᚠ⎔࡟㝗ࡗ࡚࠸ࡿࠋ1) ᢏ⬟ປാ⪅ࡢῶᑡ࡟క࠺ປാຊࡢ⿵᏶ᮏྲྀࡾ⤌ࡳࡣࠊᆅ᪉ࡢẚ㍑ⓗᑠつᶍ࡞ᘓタ⌧ሙ࡟࠾ࡅ2) ᚑ᮶ࡢᡭἲࢆぢ┤ࡋࠊ㧗㱋⪅ࡸዪᛶ࡛ࡶ↓⌮࡞ࡃࡿ⏕⏘ᛶࡢྥୖ࠾ࡼࡧᢏ⬟ປാ⪅ࡢປാ᮲௳ࠊᏳ඲⾨⏕ࠊసᴗ࡛ࡁࡿ⌧ሙ⎔ቃࡢᐇ⌧ປാ⏕⏘ᛶྥୖࢆ┠ᣦࡋ࡚ࠊḢᕞㅖᅜ࡛ᶆ‽ⓗ࡟౑⏝ࡉ3) ⏕⏘ᛶࡢྥୖ࡟ࡼࡿఇ᪥ᣑ኱➼࡟ࡼࡿാࡁ᪉ᨵ㠉ࡢࢀ࡚࠸ࡿᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࢆ฼ά⏝ࡋࡼ࠺࡜ࡍࡿᐇ⌧ࡶࡢ࡛࠶ࡿࠋ4) ᪥ᮏࡢᘓタ⌧ሙࡢ⎔ቃ࡟㐺ᛂࡋࡓᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡢ฼ά⏝᪉ἲࡢ᳨ウྲྀࡾ⤌ࡳࡢᴫせ ᢏ⾡᳨ウ఍࡛ࡣୗグ஦㡯ࢆᐇ᪋ࡋࡓࠋ ヨ⾜ᕤ஦ձ ᭷㆑⪅➼ࡢពぢࢆ㋃ࡲ࠼ࡓసᴗᐇ᪋ィ⏬㸦3Dࢹ࣮
ヨ⾜ᕤ஦ࡣࠊ୰ᮧἙᕝᅜ㐨஦ົᡤࡀⓎὀࡋࡓᅜ㐨ྕࢱά⏝ࢆྵࡴ㸧ࡢసᡂ❑ᕝబ㈡㐨㊰ࡢబ㈡ᶫୗ㒊ᕤ஦࡛࠶ࡿࠋᕤ஦ᴫせࡣ⾲ղ ᐇ㝿ࡢᕤ஦⌧ሙ࡟࠾ࡅࡿࠊࠕᚑ᮶ࡢ᪋ᕤ᪉ἲࠖ࡜ࡢ࡜࠾ࡾ࡛࠶ࡿࠋᮏヨ⾜ᕤ஦⌧ሙ࡛ࡣࠊ࡯ࡰྠつᶍࡢ$ࠊࠕᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࠖ࡜ࡢẚ㍑᳨ド$ࡢ㸰ᇶࡢᶫྎࢆ᪋ᕤࡋࡓࠋճ ⌧ሙ᳨ドࢆ㋃ࡲ࠼ࠊᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥά⏝$ᶫྎࡣᚑ᮶ᕤ஦࡜ྠᵝ࡟Ἔᅽࢡ࣮ࣞࣥࠊ$ᶫྎࡣᐃ
࡟క࠺ᨵၿ஦㡯ࡢᢳฟ࣭☜ㄆ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࢆ౑⏝ࡋ࡚᪋ᕤࡋࡓࠋ୧ᶫྎࡢ᪋ᕤ≧ἣࡢ㐪࠸ࢆほᐹࡍࡿࡇ࡜࡟ࡼࡾࠊ␗࡞
1- 113 -112

ᢏ⾡᳨ウ఍ࡢᵓᡂဨࢆ⾲-2࡟ࠊᢏ⾡᳨ウ఍ࡢ㛤ദ⤒⦋ࢆ⾲-3࡟♧ࡍࠋࢪࣈࢡ࣮ࣞࣥࢆ෗┿࡟♧ࡍࠋ౑⏝ࡋࡓࢪࣈࢡ࣮ࣞࣥࡢ㟁※ᐜ㔞ࡣ┦9N9$ࠊ
సᴗ༙ᚄࡣPࠊ᭱኱ᥭ⛬ࡣPࠊࢪࣈඛ➃࡛ࡢᐃ᱁Ⲵ㔜ࡣW࡛࠶ࡿࠋబ㈡ᶫࡢ⌧ሙ࡛ࡣⓎືⓎ㟁ᶵࢆ౑⏝ࡋࡓࡓࡵࠊⓎືⓎ㟁ᶵࡢືస㡢ࡀ኱ࡁ࠿ࡗࡓࡀࠊၟ⏝㟁※ࡀ฼⏝࡛ࡁࡿ⌧ሙ࡞ࡽࠊప㦁㡢࡛ࡢ᪋ᕤࡀྍ⬟࡛࠶ࡿࠋᮏయ㔜㔞ࡣWࠊWࡢࢥࣥࢡ࣮ࣜࢺ〇࢝࢘ࣥࢱ࢙࢘࢖ࢺࢆ᭷ࡍࡿ┤᥋ᇶ♏ᙧᘧ࡛࠶ࡿࠋWࢺࣛࢵࢡྎ࡛㐠ᦙࡋࠊWࢡ࣮࡛ࣞࣥⲴ༺ࡋࡋࡓࠋࢪࣈࡢᒎ㛤ࡣᮏయࡢࡳ࡛⾜࠺ࡇ࡜ࡀ࡛ࡁࡿࠋゎయ᫬࡟ࡣWࢺࣛࢵࢡྎ࡜Wࢺࣛࢵࢡྎࡢィྎ࡛㐠ᦙࡋࡓࠋ⾲ ヨ⾜ᕤ஦ࡢᴫせᕤ஦ྡᖹᡂ 29㸫30 ᖺᗘ బ㈡ᶫୗ㒊ᕤ஦㊰⥺ྡ୍⯡ᅜ㐨 56 ྕ ❑ᕝబ㈡㐨㊰ᕤ஦ሙᡤ㧗▱┴ᖭከ㒆㯮₻⏫బ㈡Ⓨὀ⪅ᅄᅜᆅ᪉ᩚഛᒁ୰ᮧἙᕝᅜ㐨஦ົᡤཷὀ⪅➉ᮧ⏘ᴗᰴᘧ఍♫ᕤ஦ෆᐜᶫྎᕤ㸦A1ࠊA2㸧⾲ ᢏ⾡᳨ウ఍ࡢᵓᡂဨ
ᮾி኱Ꮫ ྡ㄃ᩍᤵ 㧗▱ᕤ⛉኱Ꮫᐈဨᩍᤵ ᅧᓥṇᙪ㸦ᗙ㛗㸧㧗▱ᕤ⛉኱Ꮫ⤒῭࣭࣐ࢿࢪ࣓ࣥࢺᏛ⩌㛗  Ώ㑔 ἲ⨾᭷ ㆑ ⪅࢔ࢻࣂ࢖ࢨ࣮ᅄᅜᅵᮌ᪋ᕤ⟶⌮ᢏኈ఍㐃ྜ఍ᅜᅵᢏ⾡ᨻ⟇⥲ྜ◊✲ᡤ ♫఍㈨ᮏ࣐ࢿࢪ࣓ࣥࢺ◊✲ࢭࣥࢱ࣮ ♫఍㈨ᮏࢩࢫࢸ࣒◊✲ᐊ

ᅜᅵ஺㏻┬ᅄᅜᆅ᪉ᩚഛᒁ ௻⏬㒊 ᢏ⾡⟶⌮ㄢࠊ᪋ᕤ௻⏬ㄢ ୰ᮧἙᕝᅜ㐨஦ົᡤ෗┿ ᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡢ⌧ᆅタ⨨≧ἣ ᅄᅜᢏ⾡஦ົᡤ⾲ ᢏ⾡᳨ウ఍ࡢάື⤒⦋
H29.12.21

᳨ウ఍㸸ヨ⾜⌧ሙࡢ㑅ᐃࠊⓎὀ࡟ྥࡅࡓㄪᩚ

H30.05.10

᳨ウ఍㸸ヨ⾜⌧ሙࡢ≧ἣᢕᥱ᪉ἲ➼ࡢ᳨ウ᳨ウ఍㸸

H30.10.17࣭ᶆ‽ᕤἲ࡟ࡼࡿ A1 ᶫྎ᪋ᕤ≧ἣࡢどᐹ࣭ࢪࣈࢡ࣮ࣞࣥࡢつ᱁ࠊ᪋ᕤィ⏬➼ࡢ᳨ウ

H31.01.08
H31.01.09

ປാᇶ‽┘╩⨫࡬ࢪࣈࢡ࣮ࣞࣥタ⨨ሗ࿌≌ᘬᘧࢪࣈࢡ࣮ࣞࣥࡢタ⨨࣭ヨ㐠㌿ࡢどᐹ㸦ᰴᘧ఍♫஭ୖ⤌㸸ᚨᓥ┴ᮾࡳࡼࡋᕷ㸧

H31.01.17

ࢪࣈࢡ࣮ࣞࣥࡢᦙධ࣭タ⨨

H31.01.18⌧ሙᢏ⬟ປാ⪅㸦㕲➽ࠊᆺᯟࠊ㊊ሙ㸧࡟ࡼࡿ

㹼01.22ࢪࣈࢡ࣮ࣞࣥࡢ᧯సࣜࣁ࣮ࢧࣝ

H31.01.22

᳨ウ఍㸸A1 ᶫྎ᪋ᕤ᫬ࡢィ ⤖ᯝࡢ☜ㄆ

H31.01.23

A2 ᶫྎ࡟࠾࠸࡚ࢪࣈࢡ࣮ࣞࣥࡢ౑⏝㛤ጞ

H31.02.12⌧ሙぢᏛ఍㸸ᅄᅜᆅ᪉ᩚഛᒁ⫋ဨࢆᑐ㇟

H31.03.05⌧ሙぢᏛ఍㸸㧗▱┴す㒊ᘓタᴗ⪅ࢆᑐ㇟

H31.04.20

ࢪࣈࢡ࣮ࣞࣥࡢゎయ࣭ᦙฟ෗┿ ᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡢసᴗ⠊ᅖ෗┿ Ỉᖹࢪࣈࡢ❧ࡕୖࡆ㸦⤌❧⏝ࢡ࣮ࣞࣥࡣ୙せ㸧(3) ᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥ ᪥ᮏࡢᘓタᕤ஦࡛ࡣ⛣ືᘧἜᅽࢡ࣮ࣞࣥࡀ౑⏝ࡉࢀࡿࡇ࡜ࡀከ࠸ࠋࡇࢀ࡟ᑐࡋ≉࡟Ḣᕞ࡛ࡣᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡀᗈࡃ౑⏝ࡉࢀ࡚࠸ࡿࠋ$ᶫྎ᪋ᕤ᫬࡟౑⏝ࡋࡓ
2- 114 -113ࢪࣈࢡ࣮ࣞࣥࡢ౑⏝஦౛ ᪥ᮏ࡛ࡣ㥆ᰁࡳࡢ࡞࠸ᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࢆ᭷ຠ࡟ά⏝ࡍࡿࡓࡵࠊᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡢ౑⏝ࡀᬑཬࡋ࡚࠸ࡿࢫ࢖ࢫඹ࿴ᅜࡢ౑⏝஦౛ࢆㄪᰝࡋࡓࠋ ෗┿ࡣ㈨ᮦಖ⟶ሙᡤࡢ≧ἣ࡛࠶ࡿࠋᘓタ㈨ᮦࡣᇶᮏ
ⓗ࡟ࣃࣞࢵࢺୖ࡛ಖ⟶ࡉࢀ࡚࠾ࡾࠊ㈨ᮦࡢᦙධ࣭ᦙฟࡣ
ࣃࣞࢵࢺࡈ࡜ࣇ࢛࣮ࢡࣜࣇࢺ࡛⾜࠸ࠊࡑࡢࡲࡲ㍺㏦⏝ࢺࣛࢵࢡ࡟✚ࡳ㎸ࡲࢀࡿࠋ⌧ሙ࡛ࡣ෗┿࡛♧ࡍࣃࣞࢵࢺࣁ࣮ࣥ࢞ࡀ౑⏝ࡉࢀࠊࢺࣛࢵࢡ࠿ࡽࣃࣞࢵࢺࡈ࡜ࣃࣞࢵࢺࣁ࣮࡛ࣥ࢞㐠ᦙࡉࢀࡿࠋࢫ࢖ࢫ࡛ࡣ㈨ᮦಖ⟶ࠊ㐠ᦙࠊ⌧ሙᦙධࠊ᪋ᕤࡲ࡛ࡀࢩࢫࢸ࣒࡜ࡋ࡚ᶵ⬟ࡋ࡚࠸ࡿࠋ᪥ᮏ࡛ࡣἜᅽࢡ࣮ࣞࣥࡢ౑⏝ࢆ๓ᥦ࡜ࡋࡓࢩࢫࢸ࣒ࡀᵓ⠏ࡉࢀ࡚࠸ࡿࠋ௒ᚋࠊࢪࣈࢡ࣮ࣞࣥࢆຠ⋡ⓗ࡟౑⏝ࡍࡿࡓࡵ࡟ࡣࠊᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡢ౑⏝ࢆ๓ᥦ࡜ࡍࡿಖ⟶࣭㐠ᦙࢆྵࡵࡓࢩࢫࢸ࣒ࡢᵓ⠏ࢆ᳨ウࡍࡿᚲせࡀ࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋ෗┿ ࢡ࣮ࣞࣥࡢ᧯స≧ἣ࡜᧯సࣜࣔࢥࣥᏳ඲ᑐ⟇ ౑⏝ᐇ⦼ࡀᑡ࡞࠸ᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࢆ౑⏝ࡍࡿࡓࡵࠊ༑ศ࡞Ᏻ඲ᑐ⟇ࡀᚲせ࡛࠶ࡾࠊ⌧ሙ࡛ࡣୗグࡢᏳ඲ᑐ⟇ࢆᐇ᪋ࡋࡓࠋ  Ᏻ඲ὀព஦㡯ࡢᩚ⌮  Ᏻ඲カ⦎㸦ࢡ࣮ࣞࣥ᧯సࡢࣜࣁ࣮ࢧࣝ㸧  ࢡ࣮ࣞࣥ௙ᵝ࣭᭷㈨᱁⪅ࡢᥖ♧  ࢡ࣮ࣞࣥ㐠㌿⪅ࡢ㆑ู  ࢡ࣮ࣞࣥ౑⏝᫬ࡢ㢼㏿ࡢィ  ࡛ࡣࠊࢡ࣮ࣞࣥࡢ㑅ᐃࠊタ⨨ィ⏬ࠊ⤌❧࣭ゎయ࡟㛵ࡍࡿ␃ពⅬࡸࠊసᴗ๓࣭సᴗ᫬࠾ࡼࡧఇṆ᫬ࡢὀព஦㡯ࢆᩚ⌮ࡋࡓࠋ≉࡟ࢪࣈࢡ࣮࡛ࣞࣥࡣࢪࣈࢆ▷᫬㛫࡛␚ࡴࡇ࡜ࡀ࡛ࡁ࡞࠸ࡓࡵࠊ㢼ᑐ⟇࡟ࡘ࠸࡚ࡶ᳨ウࢆ⾜ࡗࡓࠋ ࡛ࡣࠊࢪࣈࢡ࣮ࣞࣥࢆᐇ㝿࡟᧯సࡍࡿᢏ⬟ປാ⪅ࢆᑐ㇟࡜ࡋࡓ᧯సࣜࣁ࣮ࢧࣝࢆᐇ᪋ࡋࠊ᧯స㠃࣭Ᏻ඲㠃࡛ࢡ࣮ࣞࣥࡢ᧯సឤぬࢆ஦๓࡟యឤࡋ࡚㈔ࡗࡓࠋ≧ἣࢆ෗┿࡟♧ࡍࠋ ࡛ࡣࠊࢡ࣮ࣞࣥࡢ௙ᵝࡸࢡ࣮ࣞࣥ᧯సࡢ᭷㈨᱁⪅࡟ࡘ࠸࡚⌧ሙෆ࡟ᥖ♧ࢆ⾜࠸ࠊࢡ࣮ࣞࣥࡢ⬟ຊᢕᥱࡸᏳ඲ព㆑ࡢྥୖࢆಁࡋࡓࠋ ࡛ࡣࠊᐃ⨨ᘧỈᖹࢪࣈࢡ࣮࡛ࣞࣥࡣసᴗ⪅ࡀ᧯స⪅࡜࡞ࡾሙෆࢆ⛣ືࡍࡿࡓࡵࠊࢡ࣮ࣞࣥ᧯స⪅ࡀ௚ࡢᢏ⬟ປാ⪅࠿ࡽ㆑ู࡛ࡁࡿࡼ࠺࡟⺯ගⰍࡢ࣊ࣝࣂࣥࢻࢆ⿦╔ࡋࡓࠋ ࡛ࡣࠊ㢼ᑐ⟇ࡢ୍⎔࡜ࡋ࡚⌧ሙෆ࡟ࢹࢪࢱࣝ㢼㏿ィࢆタ⨨ࠊ㢼㏿ࢆᖖ᫬⾲♧ࠊタᐃ್௨ୖࡢ㢼㏿࡜࡞ࡗࡓሙ
ྜ࡟ࡣ㆙ሗࢆ㬆ࡽࡍࢩࢫࢸ࣒ࢆᑟධࡋࡓࠋ෗┿ ࣃࣞࢵࢺୖ࡛ಖ⟶ࡉࢀࡿᘓタ㈨ᮦ

෗┿ ㈨ᮦ㐠ᦙ࡟౑⏝ࡍࡿࣃࣞࢵࢺࣁ࣮ࣥ࢞  ௒ᅇ౑⏝ࡋࡓᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡣࠊ327$,1♫㸦ࣇࣛࣥࢫ㸧〇ࡢ*705%W࡛࠶ࡿࠋᖺ〇㐀ࡢᶵᲔ࡛࠶ࡿࡀࠊ㗰ᮦ࡜࣡࢖ࣖࠊᕳୖᶵࡢࡳ࡜࠸࠺༢⣧࡞ᵓ㐀࡛࠶ࡾࠊ᪋ᕤᮇ㛫୰ࠊ඲ࡃᨾ㞀ࡋ࡞࠿ࡗࡓࠋࡋ࠿ࡋࠊ౑⏝ࡋࡓࢡ࣮ࣞࣥࡣࠊ⛣ື࡟క࠺Ⲵ᣺ࢀࡀ኱ࡁ࠿ࡗࡓࠋᢏ⬟ປാ⪅ࡣ෗┿ࡢࣜࣔࢥࣥ᧯స࡟࠶ࡓࡗ࡚Ⲵ᣺ࢀࢆᢚ࠼ࡿᕤኵ࡟ດࡵ࡚࠸ࡓࠋ᪋ᕤࡢ᭱⤊ẁ㝵࡟࠾࠸࡚ࡶࠊࡇࡢⲴ᣺ࢀࢆゎᾘࡍࡿࡇ࡜ࡣ࡛ࡁ࡞࠿ࡗࡓࡀࠊḢᕞ࡟࠾ࡅࡿ᭱᪂ࡢᐃ⨨ᘧỈᖹࢪࣈࢡ࣮࡛ࣞࣥࡣ࣐࢖ࢡ࣒࣮ࣟࣈ࡜࠸࠺ᶵᵓ࡟ࡼࡾࠊࢡ࣮ࣞࣥ᧯స࡟୙័ࢀ࡞ᢏ⬟ປാ⪅࡛࠶ࡗ࡚ࡶࠊ࡯࡜ࢇ࡝Ⲵ
᣺ࢀࡣ࡞࠸࡜ࡢ஦࡛࠶ࡿࠋ

3- 115 -114

ᢏ⬟ປാ⪅ࡢពぢ ࢪࣈࢡ࣮ࣞࣥ౑⏝ᚋࠊ⌧ሙ௦⌮ே࠾ࡼࡧᢏ⬟ປാ⪅ࡢ⫋㛗࡟ᑐࡋ࡚ពぢ⫈ྲྀࢆ⾜ࡗࡓࠋពぢ⫈ྲྀ࡛ᚓࡽࢀࡓ஦
㡯ࢆ⾲࡟♧ࡍࠋ୍␒ࡢㄢ㢟࡛࠶ࡿ㐠ᦙ᫬ࡢⲴ᣺ࢀࡣ᭱᪂ᶵ✀࡛ࡣゎᾘࡉࢀ࡚࠸ࡿࠋ ࢡ࣮ࣞࣥࢆ⮬ࡽࠊ࠸ࡘ࡛ࡶࠊዲࡁ࡞ࡼ࠺࡟᧯స࡛ࡁࡿ
஦ࡣࠊసᴗᕤ⛬ࡢᰂ㌾ᛶ࡜ࠊ㈨ᮦ㐠ᦙ࡟ᑐࡍࡿ๰ពᕤኵ
ࡢᶵ఍ࢆ୚࠼ࡿࠋࡇࡢࡇ࡜ࡣࠊᢏ⬟ປാ⪅ࡢ㈇ᢸ㍍ῶࠊ
సᴗࡢᏳ඲ᛶྥୖࠊാࡁࡀ࠸ࡢ๰ฟ࡞࡝ࠊປാ⎔ቃࡢᨵၿ࡟⧅ࡀࡿ࡜⪃࠼ࡽࢀࡿࠋ
෗┿ ኱ᆺᅵࡢ࠺⿄࡟ࡼࡿ᧯సࣜࣁ࣮ࢧࣝ

࠾ࢃࡾ࡟ ⌧ᆅㄪᰝ࡟࠾࠸࡚ࠊἜᅽࢡ࣮ࣞࣥࢆ౑⏝ࡋࡓ$ᶫྎ࡜ẚ㍑ࡋ࡚ᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࢆ౑⏝ࡋࡓ$ᶫྎ࡛ࡣࠊ
ປാ⏕⏘ᛶࡀྥୖࡋࡓࡇ࡜ࡀ☜ㄆࡉࢀࡓ࡜ࡢࡇ࡜࡛࠶ࡗ
ࡓࠋ$ᶫྎ࡜$ᶫྎ࡛ࡣࠊ㈨ᮦ⨨ࡁሙࡢᗈࡉࡸ㓄⨨ࠊ㐠ᦙ᫬ࡢ㞀ᐖ≀ ᪤タᶫྎ ➼ࡢ⌧ሙ᮲௳ࡀ␗࡞ࡿࠋ⏕⏘ᛶࡀྥୖࡋࡓせᅉࡣࠊᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡔࡅ࡛ࡣ࡞࠸࡜⪃࠼ࡽࢀࠊ␗࡞ࡿ⌧ሙ᮲௳ୗ࡛ࡢ᳨ドࡀᚲせ࡛࠶ࡿࠋ ࡋ࠿ࡋࠊᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡣࠊᢏ⬟ປാ⪅ࡀ࠸ࡘ࡛ࡶ⮬⏤࡟౑⏝࡛ࡁࠊ⢭⚄ⓗ࡞వ⿱࡜ࠊసᴗᕤ⛬ࡢᰂ㌾ࡉࢆ୚࠼ࡿࠋࡲࡓ᪂ࡓ࡞㐠ᦙ᪉ἲ࣭᪋ᕤᡭ㡰࡞࡝ᕤኵࡍࡿవᆅࡀᚓࡽࢀࡿࠋࡇࢀࡽࡣᘓタ⌧ሙ࡟࠾ࡅࡿ⏕⏘ᛶࡸᏳ඲ᛶࡢྥୖ࡟ᐤ୚ࡍࡿ࡜⪃࠼ࡽࢀࠊ௒ᚋ▱ぢࡢ⵳✚࡜ᑓ⏝἞ල➼ࡢ㛤Ⓨ➼ࢆ⾜࠺ࡇ࡜ࡀᚲせ࡜⪃࠼ࡽࢀࡿࠋ෗┿ 㐃⤖ࡋࡓ༢⟶࡟ࡼࡿ᧯సࣜࣁ࣮ࢧࣝㅰ㎡㸸ᢏ⾡᳨ウ఍ࡢᵓᡂྛ఩ࠊᕤ஦ཷὀ⪅ࡢ➉ᮧ⏘ᴗᰴᘧ఍♫ཬࡧ㛵ಀ༠ຊ఍♫࡟ࡣ᱁ูࡢ༠ຊ࣭ຓゝ࣭ᣦᑟࢆ㡬࠸ࡓࠋࡇࡇ࡟ᚰࡼࡾㅰពࢆ⾲ࡍࡿḟ➨࡛࠶ࡿࠋࢡ࣮ࣞࣥ౑⏝ࡢㄢ㢟㻔2019. 6. 30㻌ཷ௜㻕㻌$ᶫྎࡢ᪋ᕤ࡛ࡣࠊᑓ௵ࡢ࣮࢜࣌ࣞࢱ௜ࡁ࡛Ἔᅽࢡࣞ
࣮ࣥࢆ࣮ࣜࢫࡋࡓࠋ$ᶫྎࡢ᪋ᕤ࡛ࡣࠊᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡢᦙධ࣭⤌❧࡚ᚋࡣᢏ⬟ປാ⪅⮬ࡽࡀࢡ࣮ࣞࣥࢆ᧯సࡍࡿࡓࡵࠊᑓ௵ࡢ࣮࢜࣌ࣞࢱࡣ୙せ࡛࠶ࡿࠋヨ⾜ᕤ஦⌧ሙ࡟࠾࠸࡚ࡣࠊࢡ࣮ࣞࣥࡢ࣮ࣜࢫᩱ㔠࡟኱ᕪࡣ࡞࠿ࡗࡓࠋࡋ࠿ࡋࠊᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡣ᪥ᮏᅜෆ࡟࠾ࡅࡿಖ᭷ྎᩘࡀᑡ࡞࠸ࡓࡵࠊ㐠ᦙ࠾ࡼࡧ⤌❧࡚࣭ゎయ㈝ࡀ㧗㢠࡜࡞ࡗࡓࠋ ௒ᚋࠊᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡢᬑཬ࡟క࠸㐠ᦙ㈝ࡣ
๐ῶࡉࢀࡿ࡜⪃࠼ࡽࢀࡿࠋࡲࡓࠊ⤌❧࡚࣭ゎయ࡟㛵ࡋ࡚ࡶࠊ᭱᪂ࡢᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥࡣ࣎ࢱ୍ࣥࡘ࡛ࢪࣈࡢᒎ㛤ࠊ᱁⣡ࡀྍ⬟࡞ᶵ✀ࡀ㛤Ⓨࡉࢀ࡚࠾ࡾࠊ⤌❧࡚࣭ゎయࡢ㈝⏝ࡣⓎ⏕ࡋ࡞࠸ࠋ Ἔᅽࢡ࣮ࣞࣥࢆᐃ⨨ᘧỈᖹࢪࣈࢡ࣮ࣞࣥ࡟⨨ࡁ᥮࠼ࡓሙྜࠊ⌧≧࡛ࡣ㐠ᦙ࠾ࡼࡧ⤌❧࡚࣭㐠ᦙ㈝ࡀ௜ຍࡉࢀࡿ
ࡇ࡜࡟࡞ࡿࠋࡲࡓࠊᮏ᮶≌ᘬᘧ࡜ࡋ࡚〇㐀ࡉࢀࡓࢪࣈࢡ࣮࡛ࣞࣥ࠶ࡗ࡚ࡶࠊ᪥ᮏࡢᅜෆἲ௧࡛ࡣḢᕞ௙ᵝࡢࡲࡲ࡛ࡣ≌ᘬ࡛ࡁ࡞࠸࡜࠸࠺ㄢ㢟ࡀṧࡿࠋ⾲ ᢏ⬟ປാ⪅ࡢ௦⾲ⓗ࡞ពぢⰋ࠿ࡗࡓⅬ࣭ᢏ⬟ປാ⪅ࡀ⮬ࡽ᧯సࡍࡿࡓࡵࠊ⮬ศࡓࡕࡢዲࡁ࡞ࡼ࠺࡟᧯సࡍࡿࡇ࡜ࡀ࡛ࡁࡿࠋ࣭࠸ࡘ࡛ࡶࢡ࣮ࣞࣥࢆ౑⏝࡛ࡁࡿ࡜࠸࠺Ẽᣢࡕࡢవ⿱࡜Ᏻᚰឤࡀ࠶ࡿࠋᝏ࠿ࡗࡓⅬ࣭᧯స᫬ࡢྞࡾⲴࡢᦂࢀࡀ኱ࡁࡃᛧ࠸ࠋ࣭ࢡ࣮ࣞࣥ᧯స࡜సᴗࢆྠ᫬࡟ࡍࡿࡢࡣ㞴ࡋ࠸ࠋ୍࣭ே࡛ࢡ࣮ࣞࣥ᧯స࡜సᴗࢆྠ᫬࡟⾜࠺࡜ࠊ୓୍஦ᨾࡀ㉳ࡇࡗࡓሙྜ࡟Ẽࡀ௜ࡃࡢࡀ㐜ࢀࡿࡢ࡛ࡣ࡞࠸࠿ࠋࡑࡢ௚ពぢ࣭᧯సࣜࣁ࣮ࢧࣝ᫬࡟ẚ࡭࡚ࠊ᧯స࡟័ࢀࡓࠋ࣭㧗㏿᧯సࡣ౑ࢃ࡞࠸ࡢ࡛ᚤ㏿࡟ኚ࠼࡚࡯ࡋ࠸ࠋ௒ᚋࡢᮇᚅ࣭ᮏ⌧ሙࡔࡅ࡛ホ౯ࡍࡿࡢ࡛ࡣ࡞ࡃࠊ௒ᅇࡢ⤒㦂ࢆḟᅇ࡟ά࠿ࡏࡿࡇ࡜ࡢ᪉ࡀ኱஦ࠋ࣭᧯స᪉ἲࡸྞ㔠ල࣭᪋ᕤ᪉ἲࢆࢡ࣮ࣞࣥ࡟ྜࢃࡏࢀࡤࠊᬑཬࡍࡿྍ⬟ᛶࡣ࠶ࡾࡑ࠺ࠋ
࣭ࢡ࣮ࣞࣥࡢ᧯సᛶࡀୖࡀࢀࡤᏳ඲ᛶ࣭సᴗᛶࡶୖࡀࡿࠋ
4- 116 -115

Initiative to improve productivity and safety using stationary horizontal jib cranes
Masao HEIGUCHI㸪Toshiyuki TANIOKA㸪Masayuki HAYASHI
Shikoku is a region with a rapidly aging population. We believe jib cranes are necessary in this area to provide the safetyand productivity required by the construction industry in Japan.
This project introduced a jib crane to the construction of a bridge, a typical road structure, and identified the problems ass
ociated with introducing such equipment.
We have also heard from workers using jib craenes. As a result, we understand that the use of jib cranes can help to reso
lve problems with local construction.
                                        

1- 117 -116