極めて軟弱な地盤における道路 ... - cpcinc.co.jp

1 The surcharge effect of very soft ground NEXCO ( ) NEXCO ( ) NEXCO ( ) CPC 1. 1),2) 2. 40m 50m -1 +00 500+00 +00 510+00 7 10m 20m -1 3) 3.

2 -2 -2 4) ts( ts ) (Hs=2 3m) ts s( /log t) ( : s/ ) -2 Hr(=(HE+Hs+S)/ ( HE+S)) Hr(= ) (Hr= ) ts Hr -3 -2 ts ( ) Hr 3 -2 ts=100 400 -1 -1 30 10030 350120 20060 220100 40070 198 63 wn(%) qu(kN/m2) Pc(kN/m2) Cc Lig(%) -2 (cm/log t)Hs Hs s IC 82 s/ HE(m) Hs(m) S(cm) ts( )

3 Hs 20m 2m 11m 3m IC 23m 2m -2 Hr ts 2 7 12m (2014 3 ) 1 -4 -3 Hr ts 4 -2 Hr Y -2 50 Hr= HE=7m Hr=(HE+Hs)/HE Hs= Hr 4.

4 -5 Hr s/ 5) ts 4 s/ s( /log t) ( /log t) Hr = (Hs=0 ) s/ = s/ Hr s/ Hr ts -5 5. 7 10m 1 1) , ,No743/III-64, , 2) , 62 3 ,( ).

5 3) , C, ,No2, , 4) , 16 2 ,( ) . 5) , C, ,No1, ,2009. 9 -3 ts 200 400 600 800 1000 1200 1400 1600 1800 (%/log t) ts( )Hr= Hr= ICHr= -4 Hr (%/log t) Hr(=(H+hs)/H)ts=50 ICts=150 250 ts=260 400 ts=970 1530 s/ Hr(=(HE+Hs+S)/(HE+S)ts=50 ICts=150 250 ts=260 400 ts=970 1530 -5 Hr s/