ᄢጊୖศシ⍹ਇᠣੂ⹜ᢱߩࠨ࡚ࠢࠪࡦ᷹ቯ৻㕙ߖࠎᢿ⹜㛎
ᷡ᳓ ᱜ༑ጊᧄ ᄢテ
㧖㠽ขᄢቇᎿቇㇱᧁᎿቇ⑼
ᩣᑼળ␠࠙ࠛࠬࠦ
* *Key Words: Suction, Direct shear box tests, Unsaturated soil, Volcanic cohesive soil
㧝㧚ߪߓߦ ᣣᧄࠍᭂ᧲߅ࠃ߮᧲ධࠕࠫࠕߪ⇇ߢ߽ ᢙߩἫጊᏪߢࠅࠊࠁࠆἫጊἯ⾰ߦᐢߊⷒ ࠊࠇߡࠆ㧚ᚒ߇࿖ߩἫጊἯ⾰☼ᕈ㧔⚦☸ಽ߇ ᡰ㈩⊛ߥἫጊἯ⾰㧕ߩᄙߊߪᎿቇ⊛ߥขࠅᛒ ߇࿎㔍ߥ㗴ߢࠆ=?㧚 ᧄ⎇ⓥߪᣣᧄߢઍ⊛ߥ㗴ߢࠆᄢጊୖ ศシ⍹㧔 㧕ߩߖࠎᢿᒝᐲ․ᕈࠍࠄ߆ߦߔࠆ ߎߣࠍ⋡⊛ߣߒߡࠆ㧚ߎߩߪᲧセ⊛㘻ᐲߩ 㜞ਇ㘻ߩ⁁ᘒߢሽߒ㧘㜞᳓Ყ㜞㑆㓗Ყ ࠍߒ㧘ᠣੂߦࠃߞߡᭂ┵ߦᒝᐲ߇ૐਅߔࠆ㍈ ᢅߥߢࠆ㧚 㘻ߩߖࠎᢿᒝᐲ․ᕈߪ㑆㓗Ყ߅ࠃ߮ലᔕ ജߣߘߩጁᱧߢ⺑ߢ߈ࠆ߇㧘ߎߩߩਇ㘻⁁ ᘒߢߩߖࠎᢿᒝᐲ․ᕈࠍߘߩࠃ߁ߥࡄࡔ࠲ ߢ⺑ߔࠆߎߣߪኈᤃߢߥ=?㧚․ߦ㧘ု⋥ᔕ ജ߇ኒ㒠ફᔕജࠃࠅૐ႐ว㧘߃߫㧘ㅢᏱߩ ቯ৻㕙ߖࠎᢿ⹜㛎ߦ߅ߡหߓု⋥ᔕജࠍ↪ ߐߖߡ߽ߖࠎᢿᒝߐ߇ᄢ߈ߊ߫ࠄߟߚࠅ㧘ု⋥ ᔕജࠍᄢ߈ߊߔࠆߣߖࠎᢿᒝߐ߇ૐߊߥߞߚࠅߔ ࠆߎߣ߽ࠆ㧚 ߎࠇ߹ߢߦࠨ࡚ࠢࠪࡦࠍ⠨ᘦߔࠇ߫⹜ᢱߩߖ ࠎᢿᒝᐲ․ᕈࠍࠃࠅวℂ⊛ߦ⹏ଔߢ߈ࠆߎߣࠍ ࠄ߆ߦߒߡࠆ=?߇㧘ߖࠎᢿਛߩࠨ࡚ࠢࠪࡦߩ േ߇ਇߢߞߚ㧚ߘߎߢᣂߚߦࠨ࡚ࠢࠪࡦ᷹ ቯ߇น⢻ߥ৻㕙ߖࠎᢿ⹜㛎ⵝ⟎ࠍ㐿⊒ߒߚ㧚ᧄ⺰ ᢥߪ㧘ਥߣߒߡߘߩⵝ⟎ࠍ↪ߡⴕߞߚ৻㕙ߖࠎ ᢿ⹜㛎ߩ⚿ᨐߦၮߠߡኒߖࠎᢿㆊ⒟ߦ߅ߌ ࠆࠨ࡚ࠢࠪࡦߩേ㧘ߥࠄ߮ߦߖࠎᢿᒝߐߣု⋥ ᔕജ߅ࠃ߮ࠨ࡚ࠢࠪࡦߣߩ㑐ଥߦߟߡ⠨ኤߔࠆ ߽ߩߢࠆ㧚 㧞㧚⹜ᢱ 㠽ข⋵ୖศᏒߢណขߒߚਇᠣੂ⹜ᢱࠍ↪ߚ㧚 ᧄ⎇ⓥߢ↪ߚ⹜ᢱߪㆊߩ⎇ⓥ=?ߢ↪ߚ߽ ߩߣߔࠆߚߦ ߣ⒓ߔࠆ㧚ਇᠣੂ⹜ ᢱࡉࡠ࠶ࠢࠍ⼂ߔࠆߚߦ ߿ ߥߤߩ⸥ ภࠍ↪ࠆ㧚 ਥߥ‛ℂ⊛ᕈ⾰ߪᰴߩࠃ߁ߢࠆ㧦 rs 3 㧘 L 㧘 P 㧘⚦☸ಽ
₸ એ㧚ߎࠇࠄߩᜰᮡߪ⹜ᢱߩੇḨጁᱧߩ ᓇ㗀ࠍᒝߊฃߌ=?㧘৻⟵⊛ߦቯߢ߈ߥߩߢ ᐔဋ⊛ߥ୯ࠍ⸥ߒߚ㧚 ࿑ ߦജቇ⹜㛎↪ߦᢛᒻߒߚଏ⹜߆ࠄ᷹ቯ ߒߚ⹜ᢱߩೋᦼ⁁ᘒࠍ㑆㓗Ყߣ᳓Ყߩ㑐ଥߦߒ ߡ␜ߔ㧚ෳ⠨߹ߢߦㆊߩ⎇ⓥ=?ߢ↪ߚ⹜ᢱ 㧔 㧕ߩ࠺࠲߽૬ߖߡ␜ߒߡࠆ㧚 90 80 70 Sr=100% 60 DKP3(B4) DKP3(T5) DKP3(B2) DKP3(T4) DKP3(B6) small marks: DKP2 ࿑㧝㧚ଏ⹜ߩೋᦼ⁁ᘒ 㧔 㧘 㧘 㧕ߪᦨ߽ᦨㄭߦ⹜㛎ߦଏߒ ߚ߽ߩߢ߿߿ੇ῎߇ㅴࠎߢ᳓Ყ߇ૐ㧚 ߩ߁ߜ㤥ߊႣࠅߟ߱ߒߚࡑࠢߪᒝ⊛ߦ⌀ⓨ⣕ ᳇ ߒ ߚ ߽ ߩ ߢ ࠆ 㧚 ߘ ࠇ ࠄ ࠍ 㒰 ߡ ᳓ Ყ ߇ એ㧘㑆㓗Ყ߇ એ㧘㘻ᐲ߇⚂ ߢ ࠆ㧚⹜ᢱណขᤨߦ᷹ቯߒߚ୯ߣᄢ߈ߥᏅߪߥ㧚 ߎࠇ߹ߢߦⴕߞߚ⹜㛎߆ࠄ㧘ߎߩ⹜ᢱߩኒ 㒠ફᔕജ cߪ ⒟ᐲ㧘❗ᜰᢙ cߪ ߣ ផቯߐࠇߡࠆ=?㧚 c ߪࠦࡦࠪࠬ࠹ࡦࠪ㒢⇇ ߆ࠄ੍᷹ߐࠇࠆ୯ࠃࠅᄢ߈=?㧚 㧟㧚ⵝ⟎ߣᣇᴺ 㧟㧝⹜㛎ⵝ⟎ ਇ㘻↪৻ᰴరኒ⹜㛎ⵝ⟎=?ߣ㧞⒳㘃ߩ ৻㕙ߖࠎᢿ⹜㛎ⵝ⟎ࠍ↪ߚ㧚ߖࠎᢿ⹜㛎ⵝ⟎ߩ ৻ߟߪࠨ࡚ࠢࠪࡦߩ᷹ቯ߇ߢ߈ߥ߽ߩߢᡷ⦟ဳ ৻㕙ߖࠎᢿ⹜㛎ᯏ㧔ਃ═ᑼ㧕ߢࠆ㧚ઁߪᣂߒߊ 㐿⊒ߒߚ߽ߩߢኒ߅ࠃ߮ߖࠎᢿߩਔㆊ⒟ߢࠨࠢ ࡚ࠪࡦߩ᷹ቯ߇น⢻ߢࠆ㧚 ࠨ࡚ࠢࠪࡦ᷹ቯ߇᧪ߥⵝ⟎ߢߖࠎᢿ⹜㛎ࠍ ⴕߞߚ႐วߪኒㆊ⒟ࠍਇ㘻↪৻ᰴరኒ⹜ 㛎ⵝ⟎ߢታᣉߒ㧘ኒㆊ⒟߅ࠃ߮ߖࠎᢿ⋥೨ߩࠨ ࡚ࠢࠪࡦࠍ᷹ቯߒߚ㧚ߎߩᣇᴺߢ⹜㛎ߒߚ⚿ᨐߩ ৻ㇱߪᣢߦߒߡࠆ=?߇⠨ኤࠍㅴࠆߢ ౣᐲᒁ↪ߔࠆߎߣ߽ࠆ㧚 㧟㧞ࠨ࡚ࠢࠪࡦ᷹ቯน⢻ߥ৻㕙ߖࠎᢿ⹜㛎ⵝ⟎ ߎߩⵝ⟎ߪᏒ⽼ߩ৻㕙ߖࠎᢿ⹜㛎ⵝ⟎ࠍᡷ⦟ߒ ߚ߽ߩߢࠆ࿑㧞 㧚ⵝ⟎ߪ▫߇᳓ᐔᣇะ࿕ቯ ߢਅ▫߇᳓ᐔᣇะนേߢࠅ㧘ਅ▫ߩਅߩ⩄㊀⸘ ߢု⋥ᔕജ㧔ജ᧼ု⋥ᔕജ㧧 L㧕ࠍ᷹ቯߔࠆᒻ ᑼߢࠆ㧚 ᰴߩੑὐࠍᡷ⦟ߒߚ㧚߹ߕട ߩု⋥ᔕജ 㧔 U㧕ࠍ᷹ቯߢ߈ࠆࠃ߁ߦട᧼ㇱߦ⩄㊀⸘ࠍ ⸳⟎ߒߚ㧚ᰴߦ㧘ଏ⹜ᐩ㕙ߢࠨ࡚ࠢࠪࡦࠍ᷹ቯ ߢ߈ࠆࠃ߁ߦߒߚ㧚හߜ㧘ਅ▫ߩᐩㇱߦ㧘ଏ⹜ ᐩ㕙߇ធߔࠆࠃ߁ߦߦࡒ࠶ࠢ᧼ࠍ⸳⟎ߒ㧘 ਅ▫ᄖㇱߦജᄌ឵ེࠍขࠅઃߌߚ㧚߹ߚ㧘ଏ⹜ ߩ㑆㓗ⓨ᳇ࠍ᷹ቯᓮߢ߈ࠆࠃ߁߁ߦߖࠎ ᢿ▫ోࠍജ࡞ߢⷒߞߚ㧚 ࿑㧞㧚ࠨ࡚ࠢࠪࡦ᷹ቯ߇น⢻ߥ৻㕙ߖࠎᢿ⹜㛎ⵝ ⟎ 㧟㧟ᣇᴺ ࠨ࡚ࠢࠪࡦ᷹ቯน⢻ߥⵝ⟎ࠍ↪ߡⴕߞߚ৻㕙 ߖࠎᢿ⹜㛎ߩᣇᴺࠍㅀߴࠆ㧚ኒਛߩ㑆㓗᳓߹ ߚߪࠨ࡚ࠢࠪࡦߩേࠍ⺞ߴࠆߚߦᐩ㕙㕖ឃ ᳓㕙ឃ᳓ߢኒߒߚ㧚ု⋥ᔕജsU ߢ ኒߒߚᓟ㧘ቯ߹ߚߪቯⓍߩ᧦ઙߢߖࠎᢿߒ ߚ㧚ኒ㒠ફᔕജ c㧔 㧕ࠃࠅૐု⋥ᔕ ജߢߩߖࠎᢿᒝᐲ․ᕈࠍ⸃ߔࠆߚߢࠆ㧚 ߖࠎᢿㅦᐲߪ ಽ߹ߚߪ ಽߢⴕߞ ߚ㧚
㧠㧚⚿ᨐߣ⠨ኤ 㧠㧝ኒജߦࠃࠆࠨ࡚ࠢࠪࡦߩᄌൻേ=? ৻ߟߩଏ⹜ߦኻߒߡኒജ ࠍᲑ㓏⊛ߦ ߹ߢ↪ߐߖ㧘ᰴߦ ߹ߢ㒰⩄ߒߡ ߖࠎᢿߒߚ㧚ੱᎿ⊛ߥㆊኒߩጁᱧࠍਈ߃ߚߎߣ ߦߥࠆ㧚ߎߩଏ⹜ߩ⹜㛎⚿ᨐࠍ↪ߒߡኒᤨ ߩࠨ࡚ࠢࠪࡦߩേߦߟߡㅀߴࠆ㧚 ৻ቯߩ㑆㓗ⓨ᳇ a ࠍ↪ߐߖ㧘ኒ⩄㊀ ࠍᲑ㓏⊛ߦ↪ߐߖࠆߣ㑆㓗᳓ wߪ ߣߣ߽ ߦߔࠆ㧚 ߇ૐߣ߈ߪ wߪ aࠃࠅዊߐ ߇ ߇ࠆᄢ߈ߐએߦߥࠆߣ wߪ aߣ╬ߒߊ ߥࠆ㧚 㑆㓗᳓ w ߪᤨ㑆⊛ߦᄌൻߔࠆ㧚タ⩄ߩ⍍㑆 ߦ w ߪࠆ㊂ߛߌߒᤨ㑆ߣߣ߽ߦૐਅߒߡ ৻ቯߦߥࠆ㧚 ߇⋧ኻ⊛ߦૐ႐วߪ㧘タ⩄ߩ⍍ 㑆߽ᐔⴧᤨߦ߽ wߪ aࠃࠅዊߐ㧘හߜ㧘ࠨࠢ ࡚ࠪࡦߪᏱߦᱜߢࠆ㧚৻ᣇ㧘⋧ኻ⊛ߦᄢ߈⩄ ㊀ࠍタ⩄ߔࠆߣ㧘 wߪ⍍㑆ߦߒߡ a ࠍ߃㧘 ᤨ㑆߇⚻ߟߣ a ߣ╬ߒᄢ߈ߐߢ᧤ߔࠆ㧚ߎ ߩታ㛎ߢߪ એߩߩ⩄㊀ࠍ↪ߐߖࠆߣ ࠨ࡚ࠢࠪࡦߪࡠߦߥߞߚ㧚 㒰⩄ᤨߦߪ w ߪ৻ᣤᷫዋߒ㧘ᤨ㑆ߣߣ߽ߦ࿁ ᓳߔࠆ㧚ᐔⴧᤨߦߪ wߣ a߇╬ߒߊߥߞߚ㧚හ ߜࠨ࡚ࠢࠪࡦߪࡠߩ߹߹ߢࠆ㧚 ⩄ ㊀ ᄌ ൻ ㊂ ߦ ኻ ߔ ࠆ 㑆 㓗 ᳓ ᄌ ൻ ㊂ ߩ ഀ ว 㧔㧮୯㧕ߣ ߩ㑐ଥߦߟߡㅀߴࠆ㧚ߎߩଏ⹜ ߢߪ㧘㨜߇ૐᲑ㓏ߢߪ ୯ߪ ⒟ᐲߣዊߐ ߇ ߇ એߦߥࠆߣ ࠍ߃ߚ㧚ࠨࠢ ࡚ࠪࡦ߇ ߦߥࠆࠃ߁ߥ㜞 ߦኻߒߡ߽ ୯ ߪߖߗ ⒟ᐲߢߞߚ㧚ߚߛߒ㧘ߎߩࠃ߁ ߥ㜞⩄㊀Ბ㓏ߢߪଏ⹜ߩ㕙߆ࠄឃ᳓߇↢ߓ ߚ㧚߹ߚ㧘⸘▚߽㘻ᐲߪ ߦ㆐ߒߚ㧚 㧠㧞ࠨ࡚ࠢࠪࡦ᷹ቯ৻㕙ߖࠎᢿ⹜㛎ߩ⚿ᨐ 㧔㧕ኒᲑ㓏ߩേ ኒജࠍタ⩄ߔࠆ೨ߦଏ⹜ߩೋᦼࠨ࡚ࠢࠪ ࡦࠍ᷹ቯߒߚ㧔࿑㧟㧕㧚ߎߩߢߪ wߪ⚂ ಽ એ㒠߶ߣࠎߤᄌൻߖߕ㧘 aߣ wߩᏅ߇ ߢ ᐔⴧ⁁ᘒߦ㆐ߒߡࠆ㧚හߜ㧘ೋᦼࠨ࡚ࠢࠪࡦߪ ߢࠆ㧚 ࿑㧠ߪ ߩု⋥ᔕജࠍ↪ߐߖߚߣ߈ߩ a㧘 w㧘ട᧼ု⋥ᔕജ U㧘ജ ု⋥ᔕജ L ߅ࠃ߮㋦⋥ᄌ㧔ኒ㊂㧕 ߩᤨ㑆⊛ᄌൻߢࠆ㧚 ߹ߕ㧘 w ߪု⋥ᔕജタ⩄ߣߣ߽ߦ߿߿ᤨ㑆⊛ߥ ㆃࠇࠍߞߡჇടߒߘߩᓟᷫዋߒߡࠆ㧚㋦⋥ᄌ ߪタ⩄ߣߣ߽ߦ߶߷⍍㑆⊛ߦ↢ߓ㧘ߘߩᓟ㧘 ࠊߕ߆ߦੑᰴኒ⊛ߥേࠍ␜ߒߡࠆ㧚ജ᧼ ု⋥ᔕജ L ߪ↪ߐߖߚု⋥ᔕജ㧔 U㧕ߩᄌ ൻߣหᤨߦᄌൻߒߡࠆ߇ૐ୯ߢ᧤ߒߡࠆ㧚 ߎࠇߪኒߦࠃߞߡଏ⹜߇❗ߒ㧘ଏ⹜㕙 ߦะ߈ߩᡂജ߇ߚߚߢࠆ㧚ߎߩ㕙 ᡂߩᓇ㗀ߪ㧘ᓟㅀߔࠆࠃ߁ߦ㧘ߖࠎᢿᒝᐲࠍ⹏ ଔߔࠆ㓙ߦ߽㗴ࠍⶄ㔀ߦߔࠆⷐ࿃ߦߥࠆ㧚 㧔㧕ߖࠎᢿᤨߩേ ߖࠎᢿㆊ⒟ߢߩ a㧘 w㧘 U㧘 L㧘 ߅ࠃ߮ߖࠎ ᢿᔕജ ߣߖࠎᢿᄌ ߩ㑐ଥࠍ࿑㧡ߦ␜ߒߚ㧚 ട ᧼ ߩ ု ⋥ ᔕ ജ sU ߪ ⸳ ቯ ㅢ ࠅ ৻ ቯ ୯ 㧔 㧕ߦߚࠇߡࠆߎߣ߇ࠊ߆ࠆ㧚৻ᣇ㧘 ജ᧼ု⋥ᔕജsL ߪߖࠎᢿ㐿ᆎᤨߦࠊߕ߆ߦ Ⴧടߒ㧘ߔߋߦᷫዋߦォߓߡߖࠎᢿ⚳ੌ߹ߢᷫዋ ะࠍ⛯ߌߡࠆ㧚 ߖࠎᢿߩㅴⴕߣߣ߽ߦߖࠎᢿᔕജߪჇടߒߡߎ ߩߢߪ ߢࡇࠢߦ㆐ߒ㧘ߘߩᓟ✭߿߆ ߦᷫዋߒߡࠆ㧚㋦⋥ᄌ㧔࠳ࠗ࠲ࡦࠪ㊂㧕 -20 0 20 40 60 80 100 0 200 400 600 800 1000 t(min) ua,uw(kPa) ua uw No. T5-2 ࿑㧟㧚ଏ⹜ߩೋᦼࠨ࡚ࠢࠪࡦߩ᷹ቯ -20 0 20 40 60 80 100 0.01 0.1 1 10 100 1000 t(min) ua,uw,σU,σL(kPa) -2.5 -2 -1.5 -1 -0.5 0 0.5 d(mm) ua uw σU σL d No. T5-2 ࿑㧠㧚s ࠍ↪ߐߖߚߣ߈ߩ a㧘 w㧘 U㧘 L߅ࠃ߮ ߩᤨ㑆⊛ᄌൻ
ߪߖࠎᢿ㐿ᆎᤨߦᭂߡᓸዊߢࠆ߇⤘ᒛߒߘ ߩᓟߔߋߦⓍ❗ߦォߓ㧘ߖࠎᢿ⚳ੌ߹ߢⓍ ߪ❗ߒߟߠߌߚ㧚ߎߩ ߩᄌൻേߪㅀߩsL ߩᄌൻേߣ╓วߒߡࠆ㧚හߜ㧘Ⓧ߇⤘ᒛߔ ࠆᤨߪଏ⹜㕙ߦਅะ߈ߩᡂജ߇↪ߒߘߩ ⚿ᨐsL ߪߔࠆ㧚Ⓧ߇❗ߔࠆᤨߪኻߦ ะ߈ߩ㕙ᡂജ߇↪ߒߡsLߪᷫዋߔࠆ㧚 㑆㓗᳓ߪߖࠎᢿਛࠍ⛯ߌߡࠆ㧚ቯ᧦ ઙߩ⹜㛎㧔㘻ߩឃ᳓⹜㛎ߦ⋧ᒰ㧕ࠍડ࿑ߒߚ ߇ߎߩࠃ߁ߦଏ⹜ᐩ㕙ߩ㑆㓗᳓߇ᄌൻߒߚ㧚 ߎߩଏ⹜ߩߖࠎᢿㅦᐲߪ ಽߢߞߚ߇㧘 ㅦߔ߉ߚน⢻ᕈ߽ߞߚߩߢ㧘ઁߩଏ⹜ߦኻߒ ߡߖࠎᢿㅦᐲࠍ ಽߣㆃߊߒߚ㧚ㆃㅦᐲ ߖࠎᢿߒߡ߽߿ߪࠅ㑆㓗᳓ߪᄌൻߒߚ㧔㑆㓗᳓ ߇ᄌൻߒߥ߆ߞߚ႐ว߽ࠆ㧕㧚㑆㓗᳓ࠍ᷹ ቯߒߡࠆߩߢ㧘㑆㓗᳓ߩᔕ╵ߦኻಣߢ߈ࠆㅦ ᐲߢࠇ߫㗴߇ߥߣ⠨߃ࠄࠇࠆ㧚ߎߩ㗴ߪ 㘻ߩ႐วߦ߽ߎࠅ߁ࠆߎߣߢߞߡᓟᬌ ⸛ߔࠆᔅⷐ߇ࠆ㧚 㧠㧟ߖࠎᢿᒝᐲ․ᕈ 㧔㧕ߖࠎᢿᒝᐲߣု⋥ᔕജߩ㑐ଥ ㆊߩ⎇ⓥ=?=?߆ࠄࠄ߆ߦߥߞߚߖࠎᢿᒝ ᐲߦ㑐ߔࠆၮᧄ⊛ߥ․ᕈࠍ߹ߕㅀߴࠆ㧚 ߎߩ⹜ᢱߪኒ㒠ફᔕജ c એߩု⋥ᔕജߩ ਅߢߪߖࠎᢿᒝᐲߪ ߩ⎕უၮḰߢ ⺑ߢ߈ࠆ߇㧘 cࠃࠅૐု⋥ᔕജߩਅߢߪⶄ㔀 ߥߖࠎᢿᒝᐲ․ᕈࠍ␜ߔ㧔࿑㧢ෳᾖ㧕㧚 㘻ߩ႐ว㧘 c એਅߩု⋥ᔕജߩਅߢߩᒝᐲ ߪㆊኒߩጁᱧࠍ⠨ᘦߔࠆߎߣߦࠃߞߡ⺑ߢ߈ ࠆ㧚ߎߩ⹜ᢱߪ㧘వߦ␜ߒߚࠃ߁ߦ㧘 cએਅߢߪ ਇ㘻ߢࠅ㧘߹ߚ㧘ੱᎿ⊛ߥㆊኒߩጁᱧࠍਈ ߃ߥ㒢ࠅ㧘ኒߩጁᱧ߇ࠄ߆ߢߥ㧚 ਇ 㘻 ߩ ߖ ࠎ ᢿ ᒝ ᐲ ߪ ᱜ ߩ ု ⋥ ᔕ ജ net 㧔 a㧕ߣࠨ࡚ࠢࠪࡦߩ㑐ᢙߢࠆ㧘ߣ߁ߩ ߇ ቯ ⺑ ߢ ࠆ 㧚 ߘ ߎ ߢ 㧘 c ࠃ ࠅ ච ಽ ዊ ߐ ߩ߽ߣߢଏ⹜ߩࠨ࡚ࠢࠪࡦࠍᓮߒߡ ߖࠎᢿᒝߐߦኻߔࠆࠨ࡚ࠢࠪࡦߩᓇ㗀ߦߟߡ⺞ ߴߚ㧔࿑ߩ٤ 㧕㧚࿑ߢߪหߓု ⋥ᔕജߦኻߒߡ⇣ߥߞߚߖࠎᢿᒝߐ߇ࠆࠃ߁ߦ ߃ࠆ߇ࠨ࡚ࠢࠪࡦ߇⇣ߥߞߡࠆߚߢࠆ㧚 ࠨ࡚ࠢࠪࡦߣု⋥ᔕജߩ㑐ଥߦߟߡߪ⚦ࠍᓟ ㅀߔࠆ㧚 ᰴߦ㧘ࠨ࡚ࠢࠪࡦ᷹ቯน⢻ߥ৻㕙ߖࠎᢿ⹜㛎ߦ ࠃߞߡᓧࠄࠇߚ⚿ᨐߦၮߠߡߖࠎᢿᒝᐲߣု⋥ ᔕജߩ㑐ଥࠍࠃࠅ⚦ߦᬌ⸛ߔࠆ㧚࿑㧣ߦߖࠎᢿ ਛߩߖࠎᢿᔕജ ߣੑ⒳㘃ߩု⋥ᔕജ㧔sU㧘sL㧕 ߩ㑐ଥࠍ␜ߔ㧚ේὐࠍㅢࠆ⋥✢ߪ㧘 cࠃࠅචಽᄢ ߈ု⋥ᔕജߢ⹜㛎ߒߚᤨߩߖࠎᢿᒝᐲ✢ߢ࿑㧢 ߩ⋥✢ߣหߓߢࠆ㧚 -20 0 20 40 60 80 100 0 2 4 6 8 δ (mm) u a, u w, σ U, σ L,τ (kPa) -1.5 -1.2 -0.9 -0.6 -0.3 0 0.3 d (mm ) uw sL sU ua d t No. T5-2 ࿑㧡㧚ߖࠎᢿㆊ⒟ߢߩ a㧘 w㧘 U㧘 L㧘 ߅ࠃ߮ ߣ ߣߩ㑐ଥ 0 100 200 300 400 0 100 200 300 400 500 s (kPa) t f (kPa) DKP2(s not measured) DKP3(s not measured) DKP3(s regulated) fd=33°
Solid marks: artificially o.c.
࿑㧢㧚 ߅ࠃ߮ ߩၮᧄ⊛ᒝᐲ․ᕈ=?=? 0 20 40 60 80 100 0 20 40 60 80 100 sU sL䋨 䋩 䋨 䋩
sU=80kPa for cp tests
( sLt)
sL-t for cp tests ( sUt)
࿑㧣㧚ߖࠎᢿਛߩߖࠎᢿᔕജ ߣု⋥ᔕജ㧔sU㧘
߹ߕ㧘ቯߖࠎᢿ⹜㛎㧔 㧕ߩ⚿ᨐߦߟ ߡ⠨ኤߔࠆ㧚ߦㅀߴߚࠃ߁ߦsL ߪߖࠎᢿਛߦ ᷫዋߔࠆ㧚ߖࠎᢿᒝߐ㧔 ߩࡇࠢ୯㧦 f㧕ࠍsU ߦኻߒߡࡊࡠ࠶࠻ߔࠆߣหߓု⋥ᔕജߦኻߒߡߖ ࠎᢿᒝߐ߇⇣ߥࠅ㧘ᒝᐲ߇߫ࠄߟߊߣ߁⼂ߦ ⥋ࠆ㧚৻ᣇ㧘 fࠍsLߦኻߒߡࡊࡠ࠶࠻ߔࠆߣ㧘߿ ߪࠅ߫ࠄߟ߈ߪࠄࠇࠆ߽ߩߩ㧘sL ߇ᄢ߈߶ ߤ f ߇ᄢ߈ߣ߁⋧㑐ᕈ߇ࠄࠇࠆ㧚ߎߩ߫ ࠄߟ߈ߪᓟㅀߔࠆࠃ߁ߦࠨ࡚ࠢࠪࡦߩ㓝ࠇߚലᨐ ߦ࿃ߔࠆ㧚 ᰴߦቯⓍߖࠎᢿ⹜㛎㧔 㧕ߩ⚿ᨐࠍࠆ㧚 ߎߩ⹜㛎ߢߪsU ߽sL ߽ᄌൻߒߡࠆ㧚ࡇࠢᒝ ᐲ f ߣsLߩ㑐ଥߪవߩቯ⹜㛎ߢࠄࠇߚะ ߣ⍦⋫ߒߡߥ㧚 㧔㧕ߖࠎᢿᒝᐲߣࠨ࡚ࠢࠪࡦߩ㑐ଥ ࿑㧤ߪߖࠎᢿਛߩߖࠎᢿᔕജ ߣࠨ࡚ࠢࠪࡦߩ 㑐ଥߢࠆ㧚٤ߪߖࠎᢿ㐿ᆎᤨߩࠨ࡚ࠢࠪࡦ c ߣ f ߩ㑐ଥࠍߒߡࠆ㧚߹ߚ㧘ㆊߩ⎇ⓥߢ ᓧࠄࠇߚߖࠎᢿᒝߐߣኒ⚳ੌᤨߩࠨ࡚ࠢࠪࡦ 㧔 c㧕ߩ㑐ଥ߽૬ߖߡ␜ߒߡࠆ㧔࿑ߩٌ㧕㧚 0 20 40 60 80 100 0 20 40 60 80 100 s䋬sc (kPa) t, t f (kPa) OCR=8 cv test s-t paths for cp test an envelop for sc-tf plots ࿑㧤㧚ߖࠎᢿਛߩࠨ࡚ࠢࠪࡦ ߣߖࠎᢿᔕജ ߣ ߩ㑐ଥ߅ࠃ߮ߖࠎᢿ㐿ᆎᤨߩࠨ࡚ࠢࠪࡦ c ߣ fߩ㑐ଥ ߖࠎᢿਛߦࠨ࡚ࠢࠪࡦߪᄌൻߒߚ႐วߣ߶ߣࠎ ߤᄌൻߒߥ߆ߞߚ႐ว߇ߞߚ㧚ߖࠎᢿ㐿ᆎᤨߩ ࠨ࡚ࠢࠪࡦ߇ᄢ߈߽ߩߪߖࠎᢿਛߩࠨ࡚ࠢࠪࡦ ߇ᄢ߈ߊᷫዋߔࠆะ߇ࠆ㧚ߖࠎᢿᔕജߩࡇ ࠢ f ߣ c ߩ㑐ଥࠍㅪߨߡ৻ߟߩ൮⛊✢ࠍᒁߊߣ ࿑ߩࠃ߁ߦߥߞߚ㧚ቯⓍ⹜㛎ࠍ㒰ߡ㧘ߎߩ൮ ⛊✢ߪㆊߩ⎇ⓥߩ⚿ᨐ㧔৻ㇱࠍ㒰ߡ㧕ࠍ߽⺑ ߒᓧࠆߎߣ߇ࠊ߆ࠆ㧚߹ߚ㧘ߖࠎᢿᒝߐߣု⋥ ᔕജߩ㑐ଥ㧔࿑㧢㧕ߢᜰ៰ߒߚ߫ࠄߟ߈߇⸃ᶖߐ ࠇߡࠆߎߣߦᵈᗧߒߚ㧚 ߥ߅㧘൮⛊✢ߪ⋥✢ߢߥߊ㧘㕖✢ᒻᕈࠍߒߡ ࠆ㧚ߎߩ⒳ߩ㕖✢ᒻᕈߪᄙߊߩ⎇ⓥ⠪ߦࠃߞߡ ᜰ៰ߐࠇߡߡ㧔߃߫=?=?㧕㧘 ࠄߩ ឭ᩺ᑼ=?ߩㆡ↪ᕈߩ㒢⇇ࠍ␜ߒߡࠆߣ⸒߃ࠆ㧚 㧡㧚⚿⺰ ৻ᰴరኒߦ߅ߌࠆࠨ࡚ࠢࠪࡦߩേߣߒߡᰴ ߩ⍮ࠍᓧߚ㧦 ኒ㒠ફᔕജ c ࠃࠅዊߐኒ⩄㊀ ࠍタ⩄ ߔࠆߣタ⩄⋥ᓟߦᐩ㕙㑆㓗᳓ w ߪߔࠆ߇ ᤨ㑆ߣߣ߽ߦૐਅߒ㧘ࠆᄢ߈ߐߩࠨ࡚ࠢࠪࡦߪ ߚࠇࠆ㧚৻ᣇ㧘 cࠃࠅᄢ߈ ࠍタ⩄ߔࠆߣタ ⩄⋥ᓟߦ wߪ㑆㓗ⓨ᳇ aࠃࠅ߽ᄢ߈ߊߥࠅ㧘 ᤨ㑆ߣߣ߽ߦૐਅߒߡ a ߦ╬ߒߊߥࠆ㧘හߜ ࠨ ࡚ࠢࠪࡦߪᶖṌߔࠆ㧚ࠨ࡚ࠢࠪࡦ߇ᶖṌߔࠆࠃ߁ ߥᄢ߈ߥ ࠍタ⩄ߔࠆߣଏ⹜ߪ߷㘻⁁ᘒߦ⥋ ࠆ㧚 ࠨ࡚ࠢࠪࡦ᷹ቯน⢻ߥ৻㕙ߖࠎᢿ⹜㛎ߩ⚿ᨐߦ ၮߠߡᰴߩ⍮ࠍᓧߚ㧚 หߓု⋥ᔕജ㧔ട᧼ု⋥ᔕജ㧕ߢߖࠎᢿߒ ߚ႐ว㧘ߖࠎᢿᒝߐߪଏ⹜ߦࠃߞߡ⇣ߥࠆ߇㧘 ജ᧼ု⋥ᔕജ߇ᄢ߈႐ว߶ߤߖࠎᢿᒝߐ߇ ᄢ߈ߣ߁⋧㑐ᕈ߇ࠄࠇߚ㧚ߖࠎᢿᒝߐߣߖ ࠎᢿ㐿ᆎᤨߩࠨ࡚ࠢࠪࡦߣߩ㑆ߦߪᭂߡ㜞⋧ 㑐ᕈ߇ࠆ㧚ߘߩ㑐ଥߪ ࠄߩឭ᩺ᑼ=? ߩࠃ߁ߦ✢ᒻߢߪߥ㧚 ⻢ㄉ ਇᠣੂ⹜ᢱߩណขߦ㓙ߒߡ⼱ᛛⴚࠦࡦࠨ࡞࠲ ࡦ࠻ᩣ ᣂੳୃ᳁ߦ߅ߦߥߞߚ㧚⹜㛎ⵝ⟎ߩ 㐿⊒ߦᧄቇᛛⴚ⡯ຬጤᚑᢘ᳁ߩഥജࠍᓧߚ㧚߹ ߚ 㧘 ᧄ ⎇ ⓥ ߩ ৻ ㇱ ߪ ⑼ ቇ ⎇ ⓥ ⾌ ഥ ㊄ 㧔 ⎇ⓥઍ⠪ᷡ᳓ᱜ༑㧕ߦࠃࠆᚑᨐ ߦၮߠߡࠆ㧚⸥ߒߡ⻢ᗧࠍߔࠆ㧚 ߥ߅㧘ᧄ⺰ᢥߩਥⷐㇱಽߪ╙ੑ⪺⠪ߩᧄቇᄢቇ 㒮Ꮏቇ⎇ⓥ⑼ඳ჻೨ᦼ⺖⒟ቇਛߦⴕߞߚ⎇ⓥߩ ᚑᨐߢࠆߎߣࠍઃ⸥ߔࠆ㧚 ෳ⠨ᢥ₂ =?
Proc. Int. Sym. on Problematic Soils, IS-Tohoku'98
=?
Advances in Geotechnical Engineering: the Skempton Conference
Proc. of the 4th Int. Conf. on Unsaturated Soil, =? ᷡ᳓ᱜ༑ጊᧄᄢテ ᄢጊୖศシ⍹ਇ ᠣੂ⹜ᢱߩ‛ℂ⊛ᕈ⾰㧦᷹ቯᣇᴺߩᓇ㗀㧘 㠽ขᄢቇᎿቇㇱ⎇ⓥႎ๔㧘╙ ภ㧘 㧚 =? Proc. of the 2nd Asian Conference on Unsaturated Soils
=? Can. Geotech. J. =? Can. Geotech. J. =? Can. Geotech. J. ฃℂ ᐔᚑ ᐕ ᣣ
