੩ㇺᄢቇ㒐ἴ⎇ⓥᚲᐕႎ ╙ 48 ภ B ᐔᚑ 17 ᐕ 4 ᦬
Annuals of Disas. Prev. Res. Inst., Kyoto Univ., No.48 B, 2005บ㘑  ภߦࠃࠆㄭᳯ౎ᐈᏒࡎ࠹࡞ߩደᩮߩⵍኂ

ᴡ੗ብమ࡮⷏᧛ብᤘ**⽷࿅ᴺੱ ᣣᧄᑪ▽✚ว⹜㛎ᚲⷐ ᣦ2004 ᐕߦߪ᷹ⷰผ਄ᦨᄙߩ 10 ୘ߩบ㘑߇ࠊ߇࿖ߦ਄㒽ߒ㧘ฦ࿾ߢᄙᄢߥⵍኂࠍ߽ߚࠄߒߚ‫ޕ‬
2004 ᐕ 6 ᦬ 21 ᣣߦߪ㧘⷏ᣣᧄߦⷅ᧪ߒߚบ㘑 0406 ภߩᒝ㘑ߦࠃࠅṑ⾐⋵ㄭᳯ౎ᐈᏒߢࡎ࠹࡞
ߩደᩮ߇㘧ᢔߒ㧘ᣂᐙ✢ߩ᨞✢ߦដ߆ߞߡ 7 ᤨ㑆ߦࠊߚߞߡᣂᐙ✢ߩㆇⴕࠍ஗ᱛߔࠆ੐᡿߇⊒↢ߒߚ‫ޕ‬㘧ᢔߒߚደᩮߩ㊀㊂ߪ 7 ࠻ࡦ߽޽ࠅ㧘↟ᄢߥੑᰴἴኂࠍ⊒↢ߐߖࠆᕟࠇ߽޽ߞߚ‫ᧄޕ‬Ⓜߪ㧘⃻࿾⺞ᩏ⚿ᨐߦၮߠ޿ߡߎߩⵍኂߩේ࿃ߦߟ޿ߡㅀߴߚ߽ߩߢ޽ࠆ‫ޕ‬ࠠ࡯ࡢ࡯࠼㧦บ㘑㧘ⵍኂ㧘ደᩮ㧘㘧ᢔ ߪߓ߼ߦ㒽ߒߚ‫ߩߘޕ‬ᓟㄭ⇰࿾ᣇࠍർ਄ߒ㧔Fig.1 ෳᾖ㧕㧘15 ᤨㆊ߉ߦ⧯⁜ḧߦᛮߌߚᓟ㧘ᣣᧄᶏࠍർ᧲ߦㅴߺ㧘22 ᣣ 3 ᤨߦᵤ2004 ᐕ 6 ᦬ 21 ᣣߦ⷏ᣣᧄࠍⷅ᧪ߒߚบ㘑 0406 ภߪ 6シᶏጽߩ⷏ߩᶏ਄ߢ᷷Ꮺૐ᳇࿶ߣߥߞߚ‫ޕ‬㜞⍮⋵ቶᚭጧߢ᦬ 11 ᣣߩบ㘑 0404 ภߦ⛯޿ߡ㧘หᐕ 2 ᐲ⋡ߩบ㘑਄㒽ߣᦨᄢ㘑ㅦ 43.7m/s (ᦨᄢ⍍㑆㘑ㅦ 57.1m/s)㧘ᒾᩮߢߪᦨᄢ⍍ߥߞߚ‫ޕ‬6 ᦬߹ߢߦ 2 ୘ߩบ㘑߇਄㒽ߒߚߩߪ㧘᳇⽎ᐡߦ㑆㘑ㅦ 36.4 m/s㧔᧲ධ᧲㧘12:52㧕ߥߤࠍ᷹ⷰߒߚ‫ޕ‬

߅ߌࠆ 1951 ᐕߩ⛔⸘㐿ᆎએ᧪ 2 ࿁⋡ߩߎߣߢ޽ߞߚ‫ޕ‬บᒾᩮ࿾ᣇ᳇⽎บߦ߅ߌࠆบ㘑ㅢㆊᤨߩᦨᄢ㘑ㅦߪ㧘᧲ධ

㘑 0406 ภߪ 6 ᦬ 21 ᣣ྾࿖ߦ਄㒽ᓟ㧘ἑᚭౝᶏࠍㅢࠅ㧘౓᧲ߩ㘑 16.2m/s(12:30)ߢ޽ߞߚ‫ޕ‬Fig.2 ߦᒾᩮ࿾ᣇ᳇⽎บߩ 6ᐶ⋵ߦౣ਄㒽ߒߡ㧘ฦ࿾ߢ㜞ᵄ㧘ᄢ㔎㧘ᒝ㘑ߦࠃࠆⵍኂ߇

᦬ 21 ᣣߩ᳇⽎࠺࡯࠲ࠍ␜ߔ‫ޕ‬
14:00 ߦ᳇࿶߇ᦨዊ୯ࠍ␜ߒ㧘⊒↢ߒߚ‫ޕ‬ṑ⾐⋵ౝߢߪ㧘ᒝ㘑ߦࠃߞߡ㘧ᢔߒߚࡎ࠹࡞ߩ

บ㘑߇ᦨ߽ធㄭߒߡ޿ࠆ‫ޕ‬㘑ะߪบ㘑ធㄭ೨ߩධ᧲߆ࠄㅢ

ደᩮ߇ᣂᐙ✢ߩ᨞✢ߦដ߆ࠅ㧘7 ᤨ㑆ߦࠊߚߞߡਇㅢߦߔ


ࠆߥߤߩⵍኂ߇⊒↢ߒߚ‫ᧄޕ‬Ⓜߢߪ㧘ߎߩ㘧ᢔߒߚࡎ࠹࡞
ߩደᩮߩⵍኂේ࿃ߦߟ޿ߡ⹦⚦ߦᬌ⸛ߒߚ‫ޕ‬Investigation
Site ᳇⽎᭎ⷐบ㘑 0406 ภߪ 6 ᦬ 13 ᣣࠞࡠ࡝ࡦ⻉ፉߢ⊒↢ߒ㧘16 ᣣߦߪਛᔃ᳇࿶915hPa㧘ਛᔃઃㄭߩᦨᄢ㘑ㅦߪ50m/s ߦ㆐ߒߚ‫ޕ‬บ㘑ߪᒝ޿൓ജࠍ଻ߞߚ߹߹ 21 ᣣ 9 ᤨඨ㗃ߦ㜞⍮⋵ቶᚭᏒઃㄭߦ਄㒽ߒߚ‫ޕ‬਄㒽ᤨߩਛᔃ᳇࿶ߪ 965hPa㧘ਛᔃઃㄭ

ߩᦨᄢ㘑ㅦߪ 35m/s ߢ޽ߞߚ‫ޕ‬บ㘑ߪ྾࿖࿾ᣇ᧲ㇱࠍ❑ᢿ㧘ἑᚭౝᶏߦᛮߌߚᓟ㧘13 ᤨㆊ߉ߦ౓ᐶ⋵᣿⍹Ꮢઃㄭߦౣ਄

Fig.1 Track of T0406 and Investigation Site.

ㆊᓟߦߪධߦᄌൻߒߡ޿ࠆ߇㧘ᄢ߈ߥᄌൻߪ⷗ࠄࠇߥ޿‫ޕ‬ߚᏒౝߩ࡚ࠪ࠶ࡇࡦࠣ࠮ࡦ࠲࡯ߢߪ㧘ᱠⴕㅪ⛊ᯅߩࠕࠢ࡝

ߥ߅㧘⫱↢ࠕࡔ࠳᷹ࠬⷰᚲߦ߅ߌࠆᦨᄢ㘑ㅦߪ 12m/s(ධ᧲࡞᧼⵾ደᩮ㧔⚂ 3.8m⚂ 10m㧕߇㘧ᢔߒߚ(Photo 3)‫ߩߘޕ‬ߩ㘑 13:00)ߢ޽ߞߚ‫ޕ‬߹ߚ㧘⺞ᩏᑪ‛߆ࠄධ᧲ߩᣇะ⚂ 5kmઁ㧘๟ㄝߦߪዊቇᩞߩㆱ㔗㊎߇᛬ࠇߚࠅ㧘ࡐࡊ࡜ਗᧁ߇ୟ

ߩ૏⟎ߦ㧘᧲ㄭᳯⴕ᡽⚵วᶖ㒐ᧄㇱ㧔౎ᣣᏒᏒ᧲੹ፒ㧘㘑ࠇࠆߥߤߩⵍኂ߇޽ߞߚ‫ޕ‬ㅦ᷹ⷰ㜞ߐ 30.7m㧕ߢ㧘ඦᓟ 1 ᤨߦᐔဋ㘑ㅦ 24.4m/s ෸߮㧘
1 ᤨ߆ࠄ 2 ᤨߩ㑆ߦᦨᄢ⍍㑆㘑ㅦ 37.3m/s ࠍ⸥㍳ߒߡ޿ࠆ‫ޕ‬㪧㩿㪿㪧㪸㪀㪈㪇㪇㪇㪐㪐㪌㪐㪐㪇㪐㪏㪌㪐㪏㪇㪐㪎㪌㪐㪎㪇㪇㪊㪍㪐㪈㪉㪫㫀㫄㪼㪈㪌㪈㪏㪉㪈㪉㪋㪈㪉㪫㫀㫄㪼㪈㪌㪈㪏㪉㪈㪉㪋㪮㫀㫅㪻㩷㪛㫀㫉㪼㪺㫋㫀㫆㫅㪈㪍
NWSE㪈㪉㪏㪋N㪇㪇㪊㪍㪭㩿㫄㪆㫊㪀㪈㪏㪈㪍㪈㪋㪈㪉㪈㪇㪏㪍㪋㪉㪇㪇㪊

Fig.2Meteorological㪐

Photo 1 Blown Roof of a hotel onto the JR track.

㪍㪐㪈㪉
㪫㫀㫄㪼

Elements㪈㪌㪈㪏

Observed㪉㪈at㪉㪋

HikoneMeteorological Observatory, June 21, 2004.

 บ㘑  ภߦࠃࠆṑ⾐⋵ߩਥߥⵍኂ
6 ᦬ 21 ᣣ 13 ᤨ 10 ಽ㗃㧘ṑ⾐⋵ㄭᳯ౎ᐈᏒ⷏↢᧪↸㧘ᣂᐙ✢〝✢ߩධ஥ߦਗ⿛ߔࠆ࿖㆏ 8 ภ✢ᴪ޿ߦ޽ࠆࡎ࠹࡞ߩ
❑ 9m㧘ᮮ 40m ߩ㊄ዻ⵾ߩደᩮ߇บ㘑 0406 ภߦ઻߁ᒝ㘑ߢ

Photo 2 Scattered construction materials.

็߈㘧߫ߐࠇ㧘⚂ 30m 㔌ࠇߚᣂᐙ✢ߩ᨞✢਄ߦ⪭ਅ㧘᨞✢ో૕ࠍ〙޿ߛ⁁ᘒߦߥࠅ㧘᨞✢߇ಾᢿߐࠇߡ㧘ᣂᐙ✢ߩㆇⴕ߇⚂ 7 ᤨ㑆஗ᱛߒߚ㧔Photo 1㧕‫ޕ‬߹ߚ㧘หᣣ 12 ᤨ 40 ಽ㗃㧘บ㘑ㅢㆊᤨߦ⺞ᩏᑪ‛߆ࠄ⷏
ߦ 4km ߩ࿾ὐࠍ⿛ߞߡ޿ࠆ JR ᧲ᶏ㆏ᧄ✢ߩ〝✢ᴪ޿ߩ⾗᧚⟎႐߆ࠄ᧼⁁‛૕߇㘧ᢔߒ㧘⿛ⴕਛߩ JR ਅࠅ✢ゞਔਅㇱߦⴣ⓭ߒ㧘ࠛࠕ࡯ࠪࠬ࠹ࡓߩ⎕៊ߦࠃࠅ⿛ⴕਇ⢻ߣߥߞߚ‫ޕ‬㘧ᢔߒߚ⾗᧚ߪ࠙࡟࠲ࡦࡈࠜ࡯ࡓࠍࠕ࡞ࡒ᧼ߢ᜽ࠎߛ
ⶄว᧚ᢱߢ޽ࠆ(Photo 2)‫⟎᧚⾗ޕ‬႐ߢߪߎࠇࠄߩ⾗᧚߇࿕ቯߐࠇߡ߅ࠄߕ㧘㘑ߦኻߔࠆភ⟎߇චಽߦߐࠇߡ޿ߥ߆ߞߚ߽ߩߣ⠨߃ࠄࠇࠆ‫ߚ߹ޕ‬㧘⺞ᩏᑪ‛߆ࠄ⷏ߦ⚂ 3km 㔌ࠇ

Photo 3 Blown away roofs on a pedestrian bridge.

 ࡎ࠹࡞ደᩮߩ㘧ᢔⵍኂߦ㑐ߔࠆ⠨ኤ  ደᩮ㘧ᢔⵍኂߩ⁁ᴫደᩮ߇㘧ᢔߒߚࡎ࠹࡞ߪ࿖㆏ 8 ภ✢ᴪ޿ߦ޽ࠅ㧘Fig.3 ߦ␜ߒߚࠃ߁ߦ 2 ߟߩᑪ‛߇ਗࠎߢᑪߞߡ޿ࠆ‫ߩ࡞࠹ࡎޕ‬๟ㄝߪ㐿ߌߚ↰࿦࿾Ꮺߢ㧘ⵍኂߩ޽ߞߚᑪ‛ߩධ᧲஥㧔㘑਄஥㧕ߪ⚂ 500m ߦࠊߚߞߡ᳓↰߇ᐢ߇ࠅ㘑ࠍㆤࠆ‛ߪߥ޿‫ޕ‬㘧ᢔߒߚደᩮߪᢙࡩ᦬೨ߦ㔎ṳࠅ㒐ᱛߣᢿᾲߩ⋡⊛ߢᣢሽߩደᩮߩ਄ߦ⸳⟎ߐࠇߚ߽ߩߢ޽ࠆ‫ޕ‬Photo 4 ߪᣂᐙ✢ߩ✢〝߆ࠄࡎ࠹࡞ߩർ᧲஥ߩᑪ‛ߩᱜ㕙ࠍ౮ߒߚ߽ߩߢ޽
ࠆ‫ޕ‬౮⌀ߩᚻ೨߇࿖㆏ 8 ภ✢ߢ㧘ߘߩฝ஥ߦᣂᐙ✢߇૬⿛ߒߡ޿ࠆ‫ޕ‬㘧ᢔߒߚደᩮߪߎߩᑪ‛ߩะߎ߁஥ߦ޽ࠆᑪ‛ߩደᩮߢ޽ࠆ‫ޕ‬

Photo 6 Inspection by police officers on the damaged roof.

Photo 1 ߦ␜ߒߚࠃ߁ߦ㧘㘧ᢔߒߚደᩮߪේᒻࠍ߶߷଻ߞ
ߚ߹߹㧘ᑪ‛߆ࠄ⣕⪭ߒߚ‫ߪߣߎߩߎޕ‬㧘ደᩮߪᲧセ⊛ၷ࿕ߢ޽ߞߚ߇㧘ᣢሽደᩮߣߩ⇐߼ઃߌ߇චಽߢߪߥ߆ߞߚ

9KPFߎߣࠍ␜ߒߡ޿ࠆ‫ޕ‬⣕⪭ߒߚደᩮߪർ⷏஥ߩᑪ‛ߣ࿖㆏ 8ภ✢ࠍ㘧߮⿧߃ߡ㧘⚂ 30m 㘧߮ᣂᐙ✢ߩ᨞✢ߦ೔㆐ߒߚ‫ޕ‬
Photo 1 ߢደᩮߩ┵ㇱߦ⷗߃ࠆ⊕޿✢߇イవߩ㥦㓝ߒߢ޽ࠆߎߣ߆ࠄ㧘ផ᷹ߐࠇࠆደᩮߩ㘧ᢔ゠〔ࠍ Fig.3㧘 Fig.4 ߦ␜ߔ‫ߩߘߣ᧼⋴ߩ࡞࠹ࡎޕ‬਄ߦ⸳⟎ߐࠇߚࠕࡦ࠹࠽㧔Photo5 ෳᾖ㧕ࠍ㘧߮⿧߃ߡ޿ࠆߎߣߦߥࠆ߇㧘ߘߩ㜞ߐߪ 8m㨪

5KIP$QCTF10m ߢ㧘ደᩮߪ߶߷㋦⋥਄ᣇߦ⥰޿਄߇ߞߚߎߣߦߥࠆ‫ޕ‬ደᩮ߇㘧ᢔߒߚ〔ߩ⁁ᴫࠍ Photo 6 ߦ␜ߔ‫ޕ‬

Fig. 3 Track of the blown roof.

  㘧ᢔߒߚደᩮߩᣉᎿ⁁ᴫ㘑ߢ㘧ᢔߒߚደᩮߪ㧘᏷ 9m㐳ߐ 41.3m ߩ㊄ዻ᧼ߩደᩮߢ㧘ደᩮ⫘߈᧚ขࠅઃߌ↪ߩᲣደߣ౒ߦ⣕⪭ߒߡ޿ߚ‫ޕ‬
Photo 4 Façade of the Investigation Building faced to Route 8.

೨ㅀߒߚࠃ߁ߦ㧘㘧ᢔߒߚደᩮߪᣢሽደᩮߩ਄ߦᣉᎿߐࠇߡ޿ࠆ߇㧘ᣢሽߩደᩮ⥄૕ߪ㘑ߦࠃࠆⵍኂࠍฃߌߡ޿ߥ޿‫ޕ‬
Fig.5 ߦ␜ߔࠃ߁ߦ㧘ᣢሽደߩደᩮߪ㧘࡝࠶ࡊḴᒻ㍑㧔C-75
45152.3㧕ߩ਄ߦᧁᲫ࠮ࡔࡦ࠻᧼㧔ෘߐ 15mm㧕
㧘ࠕࠬࡈࠔ࡞࠻࡮࡞࡯ࡈࠖࡦࠣ㧘㊄ዻ᧼㧔ࠞ࡜࡯㋕᧼㧘ෘߐ
0.5mm㧕ⅽ᫔⫘߈ߢ㧘ߘߩ਄ߦ࠙࡟࠲ࡦࡈࠜ࡯ࡓࠍ็߈ઃߌ㧔ෘߐ 20㨪25mm㧕㧘㒐᳓Ⴃⵝߢ઀਄ߍߡ޿ࠆ‫઀ޕ‬਄ߍߦ࠙࡟࠲ࡦࡈࠜ࡯ࡓࠍ็߈ઃߌࠆ᭴ᴺߪ⃟ߒ޿߇㧘ⅽ᫔ߩ⁁ᘒߪ㍕㧘ⓣ޽߈㧘ᄌᒻ߇ߣߎࠈߤߎࠈߦ⷗ࠄࠇࠆߎߣ߆ࠄ㧘࠙࡟࠲ࡦࡈࠜ࡯ࡓ็߈ઃߌ⥄૕ߪᒰᑪ‛ᑪ⸳ᓟߦⅽ᫔⫘߈ደᩮߩᡷୃߣߒߡᣉᎿߐࠇߚ߽ߩߣᕁࠊࠇࠆ‫ޕ‬㘑ߢ㘧ᢔߒߚደᩮߪ⚂ 5 ࡩ᦬೨ߦ㧘ߎߩᣢሽߩደᩮߩ਄

Photo 5 Damaged roof (Right) and control building (left).

ߦ⫘߆ࠇߚ߽ߩߢ޽ࠆ‫ߩߎޕ‬⒳㘃ߩᡷୃߢߪ㧘ਅ࿾᭴ㅧ૕

Antenna

O

Signboard㨙

Damaged roof

Shinkannsen track
O
O

O

Root 8OOOFig. 4 Track of the roof in vertical section.
ߦដ߆ࠆⓍタ⩄㊀ࠍᦨዊ㒢ߦ෼߼ࠆߚ߼ߦ㧘ᡷୃߩደᩮࠍ

㘧ᢔߒߚደᩮߪ㧘ᣂߒ޿Უደ߆ࠄ਄ߩ᭴ᚑ᧚߇৻૕ߣߥ

シ㊂ߦߔࠆ㈩ᘦ߇ߥߐࠇࠆ‫ࠅ߹ߟޕ‬㧘ᣢሽߩᲣደ߿ုᧁ߇
ᡷୃߦࠃߞߡ㒠ફߒߥ޿ࠃ߁ߦ㧘シ޿ደᩮࠍᣢሽደᩮߩ਄ߦタߖࠆߩߢ޽ࠆ‫ޕ‬ㅢᏱ㧘ᣢሽደᩮߩ૛⠴ജߩ▸࿐ߢᡷୃ߇⸘↹ߐࠇࠆ‫ޕ‬ᡷୃߪᰴߩᚻ㗅ߢߥߐࠇߚߣផቯߐࠇࠆ‫ޕ‬ᣂߒ޿Უደࠍ
ᣢሽደᩮߦ࿕ቯߔࠆߚ߼ߦ࠙࡟࠲ࡦࡈࠜ࡯ࡓࠍⅽ᫔ߦᴪߞߡㇱಽ⊛ߦ᠗෰ߔࠆ‫ޕ‬ᣂߒ޿Უደߩ૏⟎㧔ߒߚ߇ߞߡ࠙࡟࠲ࡦࡈࠜ࡯ࡓࠍ೥ࠅขߞߚ૏⟎㧕ߪⅽ᫔ߩ 8 ᧄߏߣߢ㧘ߘߩ㑆㓒ߪ⚂ 3.3㨙ߢ޽ࠆ‫ޕ‬ᣂߒ޿Უደߦߪ㧘࡝࠶ࡊḴᒻ
㍑㧔C-7545152.3㧕ࠍ↪޿㧘ᣢሽߩደᩮߦ࿕ቯߔࠆ‫ޕ‬Უደߩ਄ߦหߓḴဳ㍑ߩုᧁࠍ⚂ 50cm 㑆㓒ߢ࿕ቯߒ㧘ߘߩ਄ߦว᧼㧔ෘߐ 9mm㧕㧘ࠕࠬࡈࠔ࡞࠻࡮࡞࡯ࡈࠖࡦࠣࠍ
㊉ߢᱛ߼ߟߌ㧘ࠞ࡜࡯㋕᧼ࠍษࠅሶߢ࿕ቯߔࠆ‫ޕ‬ᡷୃደᩮFig.5 Detail of original roof.

ߩᢿ㕙ߩ⹦⚦ࠍ Fig.6 ߦ␜ߔ‫ޕ‬Ԙԙ

Fig.6 Detail of repaired roof.

٤㧧ᣢሽᲣደ߳ߩ࿕ቯ▎ᚲ٨㧧࿕ቯ߇ਇቢోߥ▎ᚲ‫ع‬㧧࿕ቯ߇⇼ࠊߒ޿▎ᚲ㧧ⅽ᫔㗂ㇱߢߩ࿕ቯ▎ᚲ

Fig.7 Screws on the repaired roof.
ߞߡ⣕⪭ߒߡ޿ߚߩߢ㧘ᣂߒ޿Უደߣᣢሽደᩮߣߩ࿕ቯᣇ

ߋ߶ߤలಽߢߪߥ޿‫ޕ‬㘧ᢔߒߚደᩮߩ৻ㇱࠍ Photos 8, 9 ߦᴺ෸߮ߘߩᒝᐲ߇ᵈ⋡ߐࠇࠆ‫ޕ‬ᣂߒ޿Უደߪ㧘Fig.6 ߦ␜ߔ␜ߔ‫ߩࠄࠇߎޕ‬౮⌀ߩࠃ߁ߦ㧘ᄙߊߩࡀࠦߪደᩮߣߣ߽ߦ

ࠃ߁ߦ㧘࠙࡟࠲ࡦࡈࠜ࡯ࡓࠍ೥ࠅขߞߡ⃻ࠇߚⅽ᫔ࠍ〙ߋ㘧ᢔߒߡ޿ࠆ߇㧘ࡀࠦߪደᩮߩᄢ߈ߐߦኻߒߡਇ㊒ว޿ߥࠃ߁ߦḴᒻ㍑㧔㐳ߐ 9m㧕ࠍફߖ㧘ᵹࠇᣇะߦ 3 ▎ᚲ⚂ 4.5m

߶ߤዊߐ޿ߣ޿߁ශ⽎ࠍฃߌࠆ‫ޕ‬ߩ㑆㓒ߢ㧘‫ߣޠࠦࡀޟ‬๭߫ࠇࠆ㐳ߐ 5cm ߩጊᒻ㍑㧔L-40

ࡀࠦࠍ੺ߒߚ࿕ቯ▎ᚲߪฦᲣደߦ߶߷ 3 ᧄߕߟ⸘ 43 ᧄ402.3㧕ߣ࠲࠶ࡇࡦࠣࡆࠬ㧔⋥ᓘ 5mm㧘㐳ߐ 5cm㧕ߢ࿕ߢ޽ࠆ߇㧘ࡆࠬ߇ᣢሽᲣደߩ૏⟎ߣߕࠇߡ߅ࠅ㧘࿕ቯ߇ਇቯߐࠇߡ޿ߚ‫ߚ߹ޕ‬㧘Უደߩਛᄩㇱߢߪ⚂ 1.5m ߩ㑆㓒ߢቢోߥ▎ᚲ߇ 12 ▎ᚲ⊒⷗ߐࠇߡ޿ࠆ㧔Fig.7 ਛ㧘٨࿕ቯ߇หߓ࠲࠶ࡇࡦࠣࡆࠬࠍ↪޿ߡᣢሽߩደᩮߩⅽ᫔ߩ㗂ㇱߦਇቢోߥ▎ᚲ㧕‫ ߚ߹ޕ‬3 ୘ߩࡀࠦ߇ᣢሽደᩮ਄ߦᱷߐࠇߡᲣደ߇ᱛ߼ࠄࠇߡ޿ߚ‫ߡߞ߇ߚߒޕ‬㧘㘑ߦࠃࠆደᩮߩᶋ߈

޿ߚ㧔Photo 10㧕‫ߩߎޕ‬ᱷߐࠇߚࡀࠦߣᣂߒ޿Უደࠍ࿕ቯߔ਄߇ࠅജߦᛶ᛫ߔࠆⷐ⚛ߪ㧘ᣂߒ޿ደᩮߩ㊀㊂෸߮ࡀࠦࠍ

ࠆࡆࠬߪ⷗ઃ߆ߞߡ߅ࠄߕ㧘ߘߩࡆࠬⓣߦ៊்ߩᒻ〔ߪ⹺੺ߒߚ 3 ᧄߩࡆࠬߣⅽ᫔߳ߩࡆࠬߦࠃࠆᱛ߼ઃߌߣ޿߁ߎߣߦߥࠆ‫ޕ‬㘧ᢔߒߚደᩮ〔ߦ߅ߌࠆࡆࠬߦࠃࠆ࿕ቯ▎ᚲߩ⺞ᩏ⚿
ᨐࠍ Fig.7 ߦ␜ߔ‫ޕ‬ⅽ᫔ߦ࿕ቯߐࠇߚ࠲࠶ࡇࡦࠣࡆࠬԘߪ
89 ᧄ߇࡜ࡦ࠳ࡓߦᣉᎿߐࠇߡ޿ߚ‫ߒߛߚޕ‬ⅽ᫔ߪ Photo 7ߦ␜ߔࠃ߁ߦ㧘߆ߥࠅ⣣㘩߇ㅴࠎߢ߅ࠅ㧘ߎߩ⁁ᘒߢߪᒝᐲߪᦼᓙߢ߈ߥ޿ߣᕁࠊࠇࠆ‫↪ࠍࠬࡆࠣࡦࡇ࠶࠲ߣࠦࡀޕ‬޿ߡᣢሽߩᲣደߦ࿕ቯߒߚ႐วߪ޽ࠆ⒟ᐲߩᒁ߈ᛮ߈ᒝ
ᐲߪᦼᓙߢ߈ࠆ߇㧘ᓟㅀߔࠆࠃ߁ߦደᩮߩᶋ߈਄߇ࠅࠍ㒐
Photo 8 Blown roof and shackle

Photo 7 Remained roof surface.

Photo 9 Blown roof and shackle߼ࠄࠇߥ޿ߎߣ߆ࠄ㧘ࡀࠦߣᣂߒ޿Უደࠍ࿕ቯߔࠆߚ߼ߩ  ⸘▚ߩ౒ㅢ੐㗄ߣ઒ቯࡆࠬߪߖࠎᢿ⎕უߒߚߩߢߪߥߊ㧘Უደߦ࿕ቯߐࠇߡ޿ߥ⸘▚ߦ↪޿ࠆ౒ㅢ੐㗄ߣ⸥ภߩቯ⟵ࠍએਅߦ␜ߔ‫ޕ‬߆ߞߚ߽ߩߣ್ᢿߐࠇࠆ㧔Fig.7 ਛ㧘‫ع‬࿕ቯ߇⇼ࠊߒ޿▎ᚲ㧕‫ޕ‬࡮ደᩮߩో㕙Ⓧ A=9.0m41.3m=371.7m2‫ޕ‬ߘߩ⚿ᨐ㧘ደᩮవ┵ߩਛᄩઃㄭߢࡀࠦ߇ᱷߞߡ޿ߚᲣደߩ࡮ደᩮߩᐔဋ㜞ߐ H=6.9m‫ޕ‬ਔ஥ߩ࿕ቯߐࠇߚࡀࠦߩ㑆㓒ߪ⚂ 6.6m ߦߥࠅ㧘㘑ߦࠃࠆ࡮ደᩮߩイ㜞ߐ H̉=6m‫ޕ‬ᶋ߈਄߇ࠅജߦኻߔࠆᛶ᛫ജߪߐࠄߦዊߐ޿߽ߩߦߥࠆ

࡮ደᩮߩ൨㈩ǰ=9 ᐲ‫ޕ‬ߣ⠨߃ࠄࠇࠆ‫ߢࠦࡀޕ‬࿕ቯߐࠇߡ޿ߥ߆ߞߚߣ⠨߃ࠄࠇࠆ࡮ᡷୃደᩮߩో㊀㊂ mr=7 tonw‫ޕ‬Უደߩ㓞ߩᲣደߦ૞↪ߔࠆ㘑ജߪ㧘࿕ቯߐࠇߡ޿ߚᲣደߦ࡮ࡀࠦࠍ੺ߒߡᣢሽደᩮߩᲣደߦ࿕ቯߐࠇߚࡆࠬߩᒁ߈

૞↪ߔࠆᶋ߈਄߇ࠅജߩ⚂ 1.5 ୚ߦჇടߔࠆ‫ߚ߹ޕ‬㧘イవᛮ߈ᒝᐲ f1=3.42kN‫ ޕ‬f1 ߪታ㛎ߢ᳞߼㧘࠲࠶ࡇࡦࠣࡆ

ߩ㘑ߦࠃࠆᄌᒻߪઁߩイవߦᲧߴߡᄢ߈ߊߥࠅ㧘⚿ᨐ⊛ߦࠬ㧔5mmǾ50mm㧕ࠍෘߐ 2.3mm ߩ㍑᧼ߦ 2.8mm

ᶋ߈਄߇ߞߚደᩮߩਅㇱߦ㘑߇౉ࠅㄟߺᤃ޿⁁ᘒ߇↢ߓǾߩਅⓣࠍ㐿ߌߡ㧘ߨߓㄟࠎߛࡆࠬࠍタ⩄ㅦᐲߡ޿ߚߣ⠨߃ࠄࠇࠆ‫ޕ‬

2mm/min ߢᒁߞᒛߞߚߣ߈ߩᦨᄢ⩄㊀ߢ޽ࠆ‫ޕ‬㘑ߦࠃࠆደᩮߩᶋ߈਄߇ࠅജߦᛶ᛫ߔࠆ߽߁৻ߟߩⷐ

࡮ⅽ᫔ߦ࿕ቯߐࠇߚࡆࠬߩᒁ߈ᛮ߈ᒝᐲ f2=1.00kN‫ ޕ‬f2

⚛ߣߒߡߩደᩮ㊀㊂ࠍⓍ▚ߔࠆߣ㧘✚㊀㊂⚂ 7tonw㧘න૏ߪ㧘࠲࠶ࡇࡦࠣࡆࠬ㧔5mmǾ50mm㧕ࠍෘߐ 0.5mm

㕙Ⓧᒰߚࠅ 19kgw ߣ޿߁⚿ᨐࠍᓧߚ‫ޕ‬ደᩮߩ㊀㊂ߣߒߡߪߩ㍑᧼ߦ⋥ធߨߓㄟࠎߛࡆࠬࠍタ⩄ㅦᐲ2mm/minߢᒁ㕖Ᏹߦシ޿߇㧘೨ㅀߒߚࠃ߁ߦ㧘ᣢሽߩደᩮߦઃടߐࠇࠆߞᒛߞߚߣ߈ߩᦨᄢ⩄㊀ߣߒߚ‫ޕ‬ደᩮߪシߊߔࠆᔅⷐ߇޽ࠆ੐ᖱࠍ෻ᤋߒߡ޿ࠆ߽ߩߣᕁ

ᵈ㧦f1 ෸߮ f2 ߪታ㓙ߩደᩮߦ↪޿ࠄࠇߡ޿ࠆ᧚ᢱࠍࠊࠇࠆ‫ޕ‬ᗐቯߒߡ᳞߼ߚታ㛎୯ߢ޽ࠆ‫⃻ޕ‬ታߩࡆࠬߩᒁ߈
ᛮ߈ᒝᐲߪ㧘ⅽ᫔ߦ⷗ࠄࠇߚ⣣㘩╬ߦࠃࠅ㧘ߎߩታ㛎୯ࠃࠅ߽ዊߐ޿ߣ⠨߃ࠄࠇࠆ‫ࠄࠇߎࠅ߹ߟޕ‬ߩ୯ߪ࠲࠶ࡇࡦࠣࡆࠬߦᦼᓙߢ߈ࠆᒁ߈ᛮ߈ᒝᐲߩᦨᄢ୯ߦ⋧ᒰߔࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬࡮ࡀࠦࠍ੺ߒߡ࿕ቯߐࠇߚࡆࠬߩᢙ n1=44‫ߒߛߚޕ‬㧘ᣢሽደᩮߩᲣደߦ㆐ߒߡ޿ߥ޿ࡆࠬߩᢙ 12 ᧄ㧘෸߮ࡀࠦ߇ደᩮ਄ߦᱷߞߡ߅ࠅ࿕ቯߐࠇߡ޿ߥ߆ߞߚߣ⠨߃ࠄࠇࠆࡆࠬߩᢙ 3 ᧄࠍ㒰޿ߚᢙߪ n1̉=29‫ޕ‬࡮ⅽ᫔ߦ࿕ቯߐࠇߚࡆࠬߩᢙ n2=89‫ޕ‬࡮ᒰ⹥ᑪ‛ߦ็޿ߚ㘑ߪ㧘᧲ㄭᳯⴕ᡽⚵วᶖ㒐ᧄㇱ㧔౎ᣣᏒᏒ᧲੹ፒ 5-33㧘㘑ㅦ᷹ⷰ㜞ߐ 30.7m㧕ߢඦᓟ 1 ᤨߦ᷹ⷰߐࠇߚᐔဋ㘑ㅦ 24.4m/s㧘߹ߚඦᓟ 1 ᤨ߆ࠄ 2
Photo 10 Remained shackleᤨߩ㑆ߦ᷹ⷰߐࠇߚᦨᄢ⍍㑆㘑ㅦ 37.3m/s ߣߒ㧘㘑߇ደᩮߦኻߒߡု⋥ߦ็޿ߚߣߔࠆ‫ޕ‬ 㘧ᢔߒߚደᩮߩ㘑⩄㊀෸߮㘧ᢔ㘑ㅦߩផቯ
㘧ᢔߒߚደᩮߩ㘑⩄㊀ࠍ᳞߼ࠆߦߪ㧘ደᩮࠍ᭴ㅧ૕ߣ⠨߃ࠆ߆㧘ᄖⵝ᧚ߣ⠨߃ࠆ߆ߦࠃߞߡ⇣ߥࠆ‫ޕ‬ㅢᏱ㧘ደᩮో૕ߩ㘑⩄㊀ߪ᭴ㅧ૕ߣߒߡ⸳⸘ߐࠇࠆ߇㧘ߎߩ㘧ᢔߒߚደᩮߩ႐วߪᩇ߿᪞ߦ࿕ቯߐࠇߡ޿ߥ޿ߎߣ߆ࠄ㧘ᄖⵝ᧚ߣ⠨߃ࠆߎߣ߽ߢ߈ࠆ‫ߦ⥸৻ޕ‬㧘ᄖⵝ᧚ߩ⸳⸘㘑⩄㊀ߪዪㇱ  ᣢሽደᩮߩ⸳⸘㘑⩄㊀ᣢሽደᩮߩ⸳⸘㘑⩄㊀ࠍᑪ▽ၮḰᴺߦၮߠ޿ߡ㧘એਅߩࠃ߁ߦ᳞߼ࠆ‫ޕ‬ᑪ▽ၮḰᴺᣉⴕ઎╙ 87 ᧦ߦㅦᐲ࿶߇ᑼ(1)ߢਈ߃ࠄࠇߡ޿ࠆ‫ޕ‬
q=0.6EV02(1)⊛ߦ૞↪ߔࠆᲧセ⊛ᒝ޿㘑࿶ߦ⠴߃ࠆࠃ߁ߦ⸳⸘ߐࠇࠆߎߎߢ㧘q ߪㅦᐲ࿶ߢ޽ࠆ‫ޕ‬ߚ߼㧘න૏㕙Ⓧ޽ߚࠅߩ㘑⩄㊀ߪ᭴ㅧ㛽⚵↪㘑⩄㊀ߦኻߒV0 ߪၮḰ㘑ㅦߢ㧘࿾ၞߦࠃߞߡቯ߼ࠄࠇߡ߅ࠅ㧘ᑪ⸳⋭๔ߡᄢ߈ߊߥࠆ‫ߦࠇߎޕ‬ኻߒߡ᭴ㅧ㛽⚵↪㘑⩄㊀ߪᄢ߈޿㕙␜╙ 1454 ภߢߪṑ⾐⋵ㄭᳯ౎ᐈᏒߢߪ V0=34m/s ߢ޽ࠆ‫ޕ‬Ⓧߢᐔဋൻߐࠇࠆߚ߼㧘න૏㕙Ⓧ޽ߚࠅߩ㘑⩄㊀ߪᄖⵝ᧚E ߪᑪ⸳࿾ὐ๟ㄝߩ࿾⴫㕙☻ᐲߣᑪ‛㜞ߐߦࠃߞߡ᳿߹ࠆ↪㘑⩄㊀ߦᲧߴߡዊߐ޿‫ޕ‬ଥᢙߢ㧘ᑼ(2)ߢ⴫ߐࠇࠆ‫ޕ‬ߎߎߢߪ㧘߹ߕᣢሽደᩮߦⷐ᳞ߐࠇࠆ㘑⩄㊀ߦߟ޿ߡㅀ

E=Er2Gf(2)ߴ㧘ᰴߦደᩮో૕ߣߒߡߩജߩ㊒ࠅว޿߆ࠄ㘧ᢔߒߚ㘑ㅦߎߎߢ㧘Er ߪᐔဋ㘑ㅦߩ㜞ߐᣇะߩಽᏓࠍ⴫ߔଥᢙߢ㧘ᑼࠍផቯߒ㧘ߐࠄߦዪㇱ⊛ߥ㘑⩄㊀ࠍ⠨ᘦߒߚ႐วߩ㘧ᢔ㘑(3)ߢ⴫ߐࠇࠆ‫ޕ‬ㅦࠍផቯߔࠆ‫ޕ‬

DEr§ H ·¸
1.7¨¨¸© ZG ¹(3)ߣ㧘 Vˆs 㧩37.1m/s ߣߥࠆ‫ޕ‬ߎߩផቯ୯ߪᒰ⹥ᡷୃደᩮ߇ᗧ࿑ߣ߅ࠅߦᒝᐲࠍ⊒ߒߚߎߎߢ㧘H ߪደᩮߩᐔဋ㜞ߐ(m)㧘ZG ߣǩߪ࿾⴫㕙☻ᐲ඙႐วߩ୯ߢ޽ࠆ‫ޕ‬ߒ߆ߒ㧘਄ߢㅀߴߚࠃ߁ߦ㧘ࡆࠬߩ޿ߊߟ߆ߪᒁ߈ᛮ߈ಽߦᔕߓߡ᳿߹ࠆଥᢙߢ޽ࠆ‫ޕ‬ห๔␜ߦࠃࠅ㧘ᒰ⹥ᑪ‛ߩ࿾⴫㕙☻ᐲ඙ಽࠍΥߣߔࠆߣ㧘ᒝᐲࠍᦼᓙߢ߈ߥ޿ߩߢ㧘ታ⾰⊛ߦ n1̉=29 ߣߒ㧘ߐࠄߦ

ZG=450m㧘ǩ=0.20 ߢ޽ࠅ㧘ደᩮߩᐔဋ㜞ߐߪ H=6.9m ࠍઍⅽ᫔਄ߦ࿕ቯߒߚࡆࠬߩᒁ߈ᛮ߈ᒝᐲ߽ߘߩඨᢙ⒟ᐲߪ

౉ߔࠆߣ㧘Er=1.7(6.9/450)0.20=0.737 ߣߥࠆ‫ߡߞ߇ߚߒޕ‬㧘⣣㘩╬ࠍ⠨ᘦߒߡᒝᐲ߇ᦼᓙߢ߈ߥ޿ߣ⠨߃ࠆߣ㧘ደᩮᐔဋ㜞ߐߢߩ⸳⸘㘑ㅦߪ V0 Er=25m/s ߣߥࠆ‫ޕ‬
ᑼ(2)ߩ Gf ߪࠟࠬ࠻ࡈࠔࠢ࠲࡯ߢ㧘ห๔␜߆ࠄ Gf=2.5 ߣVsߥࠆ‫ࠅࠃࠄࠇߎޕ‬㧘E=1.36㧘q=942N/m2 ߇ᓧࠄࠇࠆ‫ޕ‬᭴ㅧ㛽⚵↪㘑⩄㊀ߪᣉⴕ઎╙ 87 ᧦╙ 1 㗄ߦᓥߞߡ㧘ᑼ(4)ߢ⸘▚ߐࠇࠆ‫ޕ‬
Wf=q࡮Cf(4)ߎߎߢ㧘Wf ߪ᭴ㅧ㛽⚵↪㘑⩄㊀(N/m2)㧘q ߪ਄ߢ᳞߼ߚㅦ2

ᐲ࿶(N/m )㧘Cf ߪ㘑ജଥᢙߢ޽ࠆ‫ޕ‬㘑ജଥᢙߪ๔␜╙ 1454ߣ ⠨ ߃ ࠄ ࠇ ࠆ‫ ߩ ߎ ޕ‬႐ ว ߩ⍍ 㑆 㘑 ㅦ ߩ ផቯ ୯ ߪ 㧘Vˆs | G f  Vs 㧩30.8m/s ߢ޽ࠆ‫ޕ‬ߎࠇࠄ㧞ߟߩ㘧ᢔᐔဋ㘑ㅦߩផቯ୯ߪ㧘ᐔᚑ 12 ᐕᑪ⸳⋭๔␜╙ 1454 ภߦⷙቯߔࠆᒰ࿾ᣇߩၮḰ㘑ㅦߦၮߠ޿ߚᒰ⹥ደᩮᐔဋ㜞ߐߢߩ⸳⸘㘑ㅦ 25m/s ߣ㧘౎ᣣᏒᏒᶖ㒐ᧄภ╙ 2 㗄ߦ㧘ᑼ(5)ߢቯ߼ࠄࠇߡ޿ࠆ‫ޕ‬
Cf=Cpe㧙Cpi

mr g  cosT  n1 ' f1  n2 / 2  f 2=19.5m/s ⒟ᐲߢ޽ࠆ
0.6CA  G f(5)ߎߎߢ㧘Cpe ߪᄖ࿶ଥᢙߢ㧘 ᵹࠇደᩮߢߪ㧘ደᩮߩ൨㈩ࠍ
ǰ=9 ᐲߣߒߡ㧘Cpe=㧙1.0 ߣ᳞߼ࠆߎߣ߇ߢ߈ࠆ‫ޕ‬ౝ࿶ଥᢙ Cpi ߪᄖ࿶ଥᢙ߇⽶ߩ୯ߩߣ߈ߦߪ 0 ߣߢ߈ࠆ‫ޕ‬ㇱߢ᷹ⷰߐࠇߚ߶߷หᤨೞߩ୯ 24.4m/s ߦၮߠ޿ߚᒰ⹥ደᩮᐔဋ㜞ߐߢߩᐔဋ㘑ㅦ឵▚୯ 18.0m/s ߦㄭ޿‫ޕ‬ߥ߅㧘ᑼ(6)ߩฝㄝࠍደᩮߩ㕙Ⓧߢ㒰ߒߚ୯ߪ㧘ᒰ᭴ᴺߢᦼᓙߐࠇࠆ㧔࠲࠶ࡇࡦࠣࡆࠬ߇ታ㛎୯ߩᒝᐲࠍ᦭ߔࠆߣߒߚ㧕ᦨᄢߩ㘑⩄㊀ߢ㧘827N/m2 ߢ޽ࠅ㧘ᑪ▽ၮḰᴺߦࠃࠆએ਄ࠃࠅ㧘ደᩮߩ᭴ㅧ㛽⚵↪㘑⩄㊀ߪ㧘
Wf=942(㧙1.0㧙0)= 㧙942 N/m ߣߥࠆ‫ࠅ߹ߟޕ‬㧘ᑪ▽ၮ
2⸳⸘⩄㊀ 942N/m2 ࠃࠅዊߐ޿‫ޕ‬Ḱᴺߦࠃࠇ߫㧘ደᩮߪ 942 N/m2 એ਄ߩ਄ะ߈㧔⽶㧕ߩ㘑⩄  ᡷୃደᩮߩ㘧ᢔ㘑ㅦߩផቯ㧔ደᩮዪㇱߩജߩ㊒ࠅว޿ࠍ⠨߃ߚ႐ว㧕㊀ߦ⠴߃ࠄࠇࠆࠃ߁ߦ⸳⸘ߒߥߌࠇ߫ߥࠄߥ޿‫ޕ‬  ᡷୃደᩮߩ㘧ᢔ㘑ㅦߩផቯ㧔ደᩮో૕ߩജߩ㊒ࠅว޿ࠍ⠨߃ߚ႐ว㧕
(6)

ߎߎߢ㧘W ߪደᩮో૕ߦ૞↪ߔࠆ㘑⩄㊀ߢ㧘W=CAq̉‫ޕ‬ደᩮߩᐔဋ㜞ߐߦ߅ߌࠆㅦᐲ࿶ q̉ߪ㘧ᢔᐔဋ㘑ㅦࠍ Vs ߣߒߡ㧘 q '㘧ᢔ㘑ㅦࠍផቯߒߚ߇㧘ᧄ▵ߢߪ㧘イవઃㄭߩዪㇱ㘑࿶ߣ࿕ቯᒝᐲߩ㊒ࠅว޿߆ࠄደᩮߩ㘧ᢔ㘑ㅦࠍផቯߔࠆ‫ޕ‬ደᩮో૕ߩജߩ㊒ࠅว޿ࠍᰴᑼߣߔࠆ‫ޕ‬
W=mrgcosș+n1f1+n2f2

㗄(3)ߢߪ㧘ደᩮో૕ߦ૞↪ߔࠆജߩ㊒ࠅว޿߆ࠄደᩮߩ

0.6  G f  V s 2 ߢ⴫ߔߎߣ߇ߢ߈ࠆ‫ޕ‬C ߪ㘑ജደᩮ᧚߇ᒝ㘑ࠍฃߌߡ㘧ᢔߔࠆߩߪ㧘ደᩮߩイవ㧘ࠤ࡜ࡃ޽ࠆ޿ߪ᫟ߥߤߩ․ߦ㘑࿶߇ᒝ޿ㇱಽߢደᩮߩ৻ㇱ߇ᶋ߈਄߇ࠅ㧘ㇱಽ⊛ߥ⎕៊࡮⣕⪭ߦࠃߞߡደᩮ߇ߐࠄߦ㘑ࠍฃߌࠆࠃ߁ߦᄌᒻߒߡ㧘ደᩮో૕ߩ⎕៊ߦ⥋ࠆ଀߇ᄙߊ㧘ࠃࠅ⃻ታ⊛ߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬イవߦㄭ޿ࡀࠦࠍ੺ߒߡ࿕ቯߐࠇߚ 1 ᧄߩࡆࠬ߇⽶ᜂߔଥᢙߢ㧘ᑪ⸳⋭๔␜╙ 1454 ภ߆ࠄ㧘ደᩮ൨㈩ǰ=9 ᐲߣߒࠆ㕙Ⓧࠍ⠨߃ࠆ‫ޕ‬㓞ࠅว߁ࡆࠬ㑆ߩ〒㔌ࠍ 3.3m㧘イవ߆ࠄߡ㧘C=㧙1.0 ߣߔࠆ‫ޕ‬એ਄ࠃࠅ㧘㘧ᢔ㘑ㅦߪ㧘ᵹࠇᣇะߩࡆࠬ߹ߢߩඨಽߩ〒㔌ࠍ 2.6m ߣߔࠆߣ㧘⽶ᜂVs

mr g  cosT  n1 f1  n2 f 2=23.5m/s
0.6CA  G f

㕙Ⓧߪ a=3.32.6=8.58m2 ߢ޽ࠆ‫ߩߎޕ‬㕙Ⓧߩደᩮߩ㊀㊂ߪ㧘

70008.58¸371.7=162kgw ߢ޽ࠆ‫ߚ߹ޕ‬㧘ⅽ᫔਄ߦ࿕ቯߐ
ࠇߚࡆࠬߩᢙߪ 3 ᧄߣߔࠆ‫ޕ‬ߣߥࠆ‫ޕ‬ᑪ▽ၮḰᴺߢߪ 10 ಽ㑆ᐔဋ㘑ㅦࠍ⩄㊀▚ቯߩၮᑪ⸳⋭๔␜╙ 1458 ภ⴫ 3 ߆ࠄ㧘 ᵹࠇደᩮߩࡇ࡯ࠢᄖ␆ߣߒߡ߅ࠅ㧘⍍㑆㘑ㅦߪ᳞߹ࠄߥ޿‫⿥߿࡯ࡢ࠲ޕ‬㜞ጀᑪ࿶ଥᢙߪ Fig.8 ߩࠃ߁ߦߥࠆ‫ࡦࡄࠬޕ‬ਛ߶ߤߩイవߩࡇ࡯▽‛ߩࠃ߁ߥ㘑ߦᢅᗵߥᑪ‛ߢߥ޿ᑪ‛ߩ႐ว㧘৻⥸ߦ⍍ࠢᄖ࿶ଥᢙࠍ↪޿ߡ㘧ᢔ㘑ㅦࠍផቯߔࠆߣ㧘㑆㘑ㅦࠍᰴᑼߢផ᷹ߔࠆߎߣ߇ߢ߈ࠆ‫ޕ‬Vˆs | G f  Vs
ߎࠇࠍ↪޿ߡ㧘ደᩮ߇㘧ᢔߒߚߣ߈ߩ⍍㑆㘑ㅦࠍផ᷹ߔࠆ

Vs

mr g  cosT  f1  3 f 20.6(3.2 u 0.9 u 3.3  2.5 u 1.7 u 3.3)  G f=15.0m/s

ߣߥࠆ‫ޕ‬ࡀࠦ߇ደᩮߦᱷߞߡ޿ߚㇱಽߦߟ޿ߡߪ㧘ࡆࠬߦࠃࠆ࿕ቯ߇ߥߐࠇߡ޿ߥ߆ߞߚߣផ᷹ߐࠇࠆ߇㧘㘑⩄㊀ࠍ⽶ᜂߔࠆߩߪߘߩ㓞ߩࡆࠬߢ޽ࠆ߆ࠄ㧘⽶ᜂ㕙Ⓧ߇ 1.5 ୚ߦᄢ߈Vsߊߥࠆ‫ߩߎޕ‬႐ว㧘ⅽ᫔਄ߩࡆࠬߩᢙ߽ 1.5 ୚ߦߥࠆߣߒߡ㧘㘧ᢔ㘑ㅦࠍ᳞߼ࠆߣ㧘

1.5 u mr g  cosT  f1  1.5 u 3 f 2=13.50.6(3.2 u 0.9 u 3.3  2.5 u 1.7 u 3.3) u 1.5  G fm/s ߣ⸘▚ߐࠇࠆ‫ޕ‬

Cpe=㧙2.5

Cpe=㧙4.1

Cpe=㧙3.2
0.9㨙

2.6㨙

Fig.8 Design wind force coefficient for cladding on roof㧚 ߹ߣ߼߃ࠆߣ 20m/s ⒟ᐲߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫ߚ߹ޕ‬㧘ᑪ▽ၮḰᴺߦⷙቯߐࠇߚᄖⵝ᧚↪㘑⩄㊀߆ࠄផቯߐࠇࠆ㘧ᢔᐔဋ㘑บ㘑 0406 ภߦࠃࠆㄭᳯ౎ᐈᏒઃㄭߩᒝ㘑ἴኂߦߟ޿ߡ

ㅦߪ਄⸥ߩ୯ߩ⚂ 6 ഀߩ 13.5m/s ⒟ᐲߣߥߞߚ‫ߩࠄࠇߎޕ‬⺞ᩏࠍⴕ޿㧘․ߦⵍኂ߇㗼⪺ߢ޽ߞߚᣂᐙ✢᨞✢ߦ៊்ࠍ㘧ᢔᐔဋ㘑ㅦߩផቯ୯ߪ޿ߕࠇ߽ᑪ▽ၮḰᴺߢቯ߼ࠄࠇਈ߃ߚࡎ࠹࡞ደᩮߩ㘧ᢔⵍኂߦߟ޿ߡ⹦⚦ߦㅀߴߚ‫ޕ‬ߚ⸳⸘㘑ㅦ 25m/s ࠃࠅ߽ዊߐ޿‫߅ߥޕ‬㧘㘧ᢔᐔဋ㘑ㅦߩផᡷୃߐࠇߚࡎ࠹࡞ደᩮߩ㘧ᢔ㘑ㅦࠍജߩ㊒ࠅว޿߆ࠄቯߦߪ㧘ஜోߥࡆࠬߩᒝᐲ⹜㛎ߦၮߠ޿ߚᒁ߈ᛮ߈ᒝᐲࠍផቯߒߚ‫⚿ߩߘޕ‬ᨐ㧘ᡷୃߦ㓙ߒߡ㧘ᒰೋᗧ࿑ߐࠇߚߣ߅↪޿ߡ߅ࠅ㧘㘧ᢔᤨߩ⁁ᘒ߆ࠄ⠨߃ࠆߣ㧘ታ㓙ߩࡆࠬߩᒝࠅߦ࿕ቯᒝᐲ߇⊒ើߐࠇߚߣߔࠆߣ㧘ᑪ▽ၮḰᴺߦⷙቯߐᐲߪ⹜㛎୯ࠃࠅ߽ዊߐ޿ߣផቯߐࠇ㧘⃻ታߩ㘧ᢔ㘑ㅦߪ਄ࠇߚ᭴ㅧ㛽⚵ߺ↪㘑⩄㊀߆ࠄផቯߐࠇࠆ㘧ᢔᐔဋ㘑ㅦߪ⸥ߩ୯ࠃࠅ߽ᦝߦዊߐ޿ߩߢߪߥ޿߆ߣᕁࠊࠇࠆ‫ޕ‬ᐔဋ㘑ㅦ 23.5m/s ߢ޽ࠆ߇㧘㘧ᢔᤨߩࡆࠬ╬ߩ⁁ᴫ߆ࠄ⠨

Damage to a roof on a hotel at Shiga prefecture caused by Typhoon 0406
Hiromasa KAWAI, Hiroaki NISHIMURA**General Building Research Corporation of JapanSynopsis
Typhoon 0406 attacked Kinki area, Japan, in June 21, 2004. A covered metal roof on a hotel was blown off
from the roof by severe wind, and flew to neighboring JR Shinkansen railway track. The roof had the size of 9m by
41m and the weight of 7 ton. JR Shinkansen railway service was suspended during 7 hours. The scattering wind isestimated about 13.5m/s to 20m/s that is less than the design wind speed.
Keywords: Typhoon, Damage, Roof, Scatter