http://www.suiri.civil.yamaguchi-u.ac.jp/

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• http//www.suiri.civil.yamaguchi-u.ac.jp/
• kido_at_yamaguchi-u.ac.jp

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????????????????????????????(probability density
function)???.??????????????????(???population)???
???????????????????(??????sample). ?????????????
????,???????????????????????????????. ???????????
?????????(normal distribution,?????????(Gaussian
distribution)????)??????. ?????????????.
s????,x0???
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??????????????????????????, ????????????????. ????
??,????????,??????????, Gumbel??
xr?????
xr???????(?????)
xr??????(????)
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T???????????????????T???????????
100????1/100(1)????100???????????? 50???????????1
/500.02(2) 10???????????1/100.1(10) T????????
???????????T???????????? 100????1-1/00(99)????10
0???????????? 50????????????1-1/500.98(98) 10???
?????????1-1/100.9(90) ??,?????????(return
period)??????(??????)??????,????????.
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????(???)??(?)????????????????????. ?????????,??
??? ?????(GEV)??L??? ?? ??????????????,??????????
???. ????????????,??????????.
??????????(?????N)????????????.
i??????xi??????F(xi)????????? (?????????????????.
?????????????????????.)
a0Weibull(????) ???? a1/2Hazen(????)???? a2/5
Cunnane(???)????
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p.148 ????2
N20
????????????.
7
?????()
100???
10???
300mm
???????(mm)
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????
???????????????(??????)
???????
????????a,b,x0????. ???,???????????????x??????????
??.
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(No Transcript)
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?????????10????b???????. ??????200.12(?)?b?????
???. ?????????????????. b?????????????????(??????
???)??,??????4,5?????????.
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???????????????????????????????.
x300(mm)???
??????????????????. (???????????,p.84,????,ISBN4-
627-49501-3)
?????300mm????50?????????. (??????50???)
100??????1.645???.??????x??????
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100?????
??????????2???
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?????()
99.6
0.40.0044/1000 1/250 250???
????????,H17????????
2???(mm)
400mm???
??????????2???