



Thêigianlmbi:90phót


Kh«ngsödôngtiliÖu





KýhiÖuc¸c®Æctr−ngcña®Êt:
γDungträngtùnhiªn;γ
nn
dungträngnon−íc;γ
®n
dungträng®Èynæi;
∆tûträngh¹t;µhÖsènëngang;B®ésÖt,ξhÖsè¸plùcngang;w®éÈm
clùcdÝnh®¬nvÞ;ϕgãcmas¸ttrong;E
0
m«®ulbiÕnd¹ng;µ
0
hÖsènë
ngang;q
c
c−êng®ékh¸ngxuyªntÜnh;NchØtiªutrongSPT
1
Tr−êng§¹ihäcX©yDùng




C©u1
VÏh×nhbiÔudiÔncÊut¹oc¬b¶ncñamãng®¬nn«ngd−íicétbªt«ngcètthÐpvDgi¶i
thÝcht¹isaol¹icãyªuc©ucÊut¹o®ã?
C©u2
Tr×nhbDyc«ngthøctÝnhsøcchÞut¶icñacäctheo®iÒukiÖnnÒn®ÊtdùavDokÕtqu¶thÝ
nghiÖmxuyªntÜnh(YªucÇucãkÌmh×nhvÏminhho¹).
C©u3
ChänchiÒus©u®ÆtmãngthÝchhîpvDx¸c®ÞnhkÝchth−íc®¸ymãng®¬nbªt«ngcèt
thÐptheo®iÒukiÖnsøcchÞut¶icñanÒn®Êt.ChobiÕtt¶iträngtiªuchuÈnd−íicétN
0
=
82T(báquam«menvDlùcc¾t).NÒn®Êt®ångnhÊt,b»ngph¼ng,trängl−îngriªngγ=
17,9KN/m
3
,gãcmas¸ttrongϕ=20
0
vDlùcdÝnhc=12KN/m
2
.Gi¶söhÖsèantoDnvÒ
søcchÞut¶icñanÒnlD2.
C©u4
X¸c®inhsèl−îngcäctheo®iÒukiÖnt¶iträngt¸cdônglªncäctronghÖmãngcäc®Di
thÊpd−íicétnh−sau:
- T¶iträngtÝnhto¸nt¹imøc®¸y®Di:t¶iträng®øngN=122T,m«menM=
18Tm,
SøcchÞut¶itÝnhto¸ncñacäc®¬nbªt«ngcètthÐptiÕtdiÖn30x30cm,dDi9m
lD38T
(YªucÇuvÏh×nhminhho¹bètrÝcäctrªnmÆtb»ng)
C©u5
NÒn®Êtkhuvùcx©ydùnggåm3líp®Êt:
Líp1thuéclo¹isÐtpha,®ésÖtB=0,73vDdDy2,7m
Líp2lDsÐt,®ésÖt0,4dDy4m,
Líp3thuéclo¹isÐtnöacøng.
YªucÇu®ÒxuÊtc¸cph−¬ng¸nnÒnmãngkh¶thi,biÕtt¶iträngc«ngtr×nhkh«nglín.




Thêigianlmbi:90phót


Kh«ngsödôngtiliÖu





KýhiÖuc¸c®Æctr−ngcña®Êt:
γDungträngtùnhiªn;γ
nn
dungträngnon−íc;γ
®n
dungträng®Èynæi;
∆tûträngh¹t;µhÖsènëngang;B®ésÖt,ξhÖsè¸plùcngang;w®éÈm
clùcdÝnh®¬nvÞ;ϕgãcmas¸ttrong;E
0
m«®ulbiÕnd¹ng;µ
0
hÖsènë
ngang;q
c
c−êng®ékh¸ngxuyªntÜnh;NchØtiªutrongSPT
2
Tr−êng§¹ihäcX©yDùng




C©u1
X¸c®Þnh®élóncña
mãngcäcsau®©y.
ChobiÕtkÝchth−íc
cäc25x25cm.
C©u2
C¸cyªucÇucÊut¹omãngb¨ngBTCTd−íihDngcét(vÏh×nhminhho¹)vDgi¶ithÝch.
C©u3
C¸cnéidungtÝnhto¸nnÒn®ÊtkhimãngchÞut¶i®øngvDnganglín.
C©u4
KiÓmtrat¶iträngt¸cdônglªncäctrongmétmãngcäc®DithÊp.BiÕt:
T¶iträngch©ncétN
tt
=180T;M
tt
=82Tm;cäcBTCTtiÕtdiÖn25x25(cm).
Sèl−îngcäc:10cäc,bètrÝthDnh2hDngvíikho¶ngc¸chgi÷ac¸ctimcäclD1m.
T¶iträngchophÐpcñacäclD[P]=30T.
C©u5
X¸c®ÞnhsøcchÞut¶icñacäctheo®ÊtnÒnbiÕt:cäccãtiÕtdiÖn30x30cmh¹b»ngbóa
th−êngtrongmãngcäc®DithÊp,cäccãchiÒudDi15m.
NÒn®Êtgåm2líp:
Líp1:¸sÐtcãB=1,4;ϕ=14
0
, H
1
=6m.
Líp2:sÐtcãB=0,2;ϕ=18
0
,H
2
>20m
§¸y®Din»më®és©u1,5msovíimÆt®Êttùnhiªn.
Líp1:SÐtB=1,2;
γ
=1,7T/m
3

Líp2:C¸tnhá,
ϕ
=30
0
;
γ
=1,8
T/m
3
;q
c
=700T/m
2
;
µ
=0,3.




 





Thêigianlmbi:90phót


Kh«ngsödôngtiliÖu





KýhiÖuc¸c®Æctr−ngcña®Êt:
γDungträngtùnhiªn;γ
nn
dungträngnon−íc;γ
®n
dungträng®Èynæi;
∆tûträngh¹t;µhÖsènëngang;B®ésÖt,ξhÖsè¸plùcngang;w®éÈm
clùcdÝnh®¬nvÞ;ϕgãcmas¸ttrong;E
0
m«®ulbiÕnd¹ng;µ
0
hÖsènë
ngang;q
c
c−êng®ékh¸ngxuyªntÜnh;NchØtiªutrongSPT
3
Tr−êng§¹ihäcX©yDùng




C©u1
Tr×nhbDynhònghiÓubiÕtvÒm«h×nhnÒn(c¸cm«h×nhvDøngdôngtrongc¸cbDito¸n
®ÞaküthuËt).
C©u2
Tr×nhbDyc¸cgi¶thiÕtkhitÝnhto¸nkiÓmtramãngcäc®DithÊptheoph−¬ngph¸pgÇn
®óngvDc¸cgi¶thiÕtnDy®ùoc¸pdôngvDonhòngbuãctÝnhto¸nnDo?.
C©u3
Dùb¸osøcchÞut¶icñacäc®ãngbªt«ngcètthÐp300#,dDi10m,tiÕtdiÖn30x30cm
gåm4Φ18AII.ChobiÕtkÕtqu¶thÝnghiÖmnÐntÜnhcäcthönh−sau:
T¶inÐnTN(T)
10 20 30 40 50 60 70 80 90 100
§é lón cäc
(mm)
1,0 2,5 3,4 4,6 5,6 7,5 9,8 12,0
30,4
54,8
(Tùchänc¸chÖsèantoDntrongqu¸tr×nhx¸c®ÞnhsøcchÞut¶icñacäctheo®iÒukiÖn
nÒn®Êt)
C©u4
X¸c®ÞnhsøcchÞut¶icñacäctheokÕtqu¶xuyªntÜnhbiÕt:
CäccãchiÒudDiL=12m,tiÕtdiÖn30x30cm.
§¸y®Din»më®és©u1,5msovíimÆt®Êttùnhiªn.
NÒn®Êtgåm2líp: +Líp1:dDy8mcãB=1,35;q
C
=200KN/cm
2
.
+Líp2:c¸th¹ttrung,chÆtvõadDy>20mcãq
C
=1100KN/cm
2
C©u5
X¸c®ÞnhkÝchth−íc®¸ymãngn«ngd−íicéttheo®iÒukiÖnsøcchÞut¶icñanÒnvíihÖ
sèantoDnlDF
S
=2,5.
BiÕtt¶iträngtÝnhto¸nd−íi®¸ymãng(coilD®Òu)lDp
tt
=280KN/m
2
.
§¸ymãng®−îc®Æts©u1msovíimÆt®Êttùnhiªn.
NÒn®Êt®ångnhÊt,b»ngph¼ngcãγ=18,5KN/m
3
;c=20KN/m
2
;ϕ=20
0
.




Thêigianlmbi:90phót


Kh«ngsödôngtiliÖu





KýhiÖuc¸c®Æctr−ngcña®Êt:
γDungträngtùnhiªn;γ
nn
dungträngnon−íc;γ
®n
dungträng®Èynæi;
∆tûträngh¹t;µhÖsènëngang;B®ésÖt,ξhÖsè¸plùcngang;w®éÈm
clùcdÝnh®¬nvÞ;ϕgãcmas¸ttrong;E
0
m«®ulbiÕnd¹ng;µ
0
hÖsènë
ngang;q
c
c−êng®ékh¸ngxuyªntÜnh;NchØtiªutrongSPT
4
Tr−êng§¹ihäcX©yDùng




C©u1
§ÒxuÊtph−¬ng¸nmãngcäctrongtr−ênghîpsau:
− C«ngtr×nhcãt¶iträngN,Mkh¸lín
− NÒn®Êtgåm3líp®Êt:
+Líp®Êt1bªntrªncãbÒdDythay®æi46mthuéclo¹isÐtphacã®ésÖtB=1,3
+Líp®Êt2cãbÒdDythay®æi67mthuéclo¹isÐtcã®ésÖtB=0,2
+Líp®Êt3rÊtdDylDc¸ttrungcãc−êng®ékh¸ngxuyªntrungb×nhq
c
=890T/m
2
.
C©u2
C¸cyªucÇucÊut¹o®èivíicäc®ócs½nvDmèinèicäcth«ngth−êng.
C©u3
X¸c®Þnhsèl−îngcäccÇnthiÕtvDbètrÝkho¶ngc¸chhîplýtrongmãngcäcsau:
T¶iträngmøc®¸y®DilDN
tt
=140T;M
x
tt
=12Tm.
SøcchÞut¶ichophÐpcñacäcdDi9mtiÕtdiÖn20x20(cm)lD[P]=20T.
C©u4
KiÓmtrachiÒucaomãngtheo®iÒukiÖn®©mthñngvDx¸c®Þnhl−îngcètthÐpcÇnthiÕt
trongmãngb¨ngBTCTd−íit−êngchÞulùc.T¶iträngd−íit−êngcoilD®óngt©mN
0
=
36T/m.BiÕt:
Mãngréngb=1,8m;cao0,4m;bªt«ngm¸c250#;thÐpAII(Ra=2800KG/cm
2
)
T−êngBTCTdDy15cm.
Líplãtb»ngBTm¸c100#,dDy10cm.
C©u5
X¸c®ÞnhsøcchÞut¶icñacäctheokÕtqu¶thÝnghiÖmnÐntÜnhcäcnh−sau.BiÕtcäc®óc
25x25(cm)x10(m)
T¶iträngnÐn(T) 102030405060708090100110120
§élónt−¬ngøng
(mm) 1,83,94,86,27,81013,015,718,827,042,060,1
(Tùchänc¸chÖsèantoDntrongtÝnhto¸n)




Thêigianlmbi:90phót


Kh«ngsödôngtiliÖu





KýhiÖuc¸c®Æctr−ngcña®Êt:
γDungträngtùnhiªn;γ
nn
dungträngnon−íc;γ
®n
dungträng®Èynæi;
∆tûträngh¹t;µhÖsènëngang;B®ésÖt,ξhÖsè¸plùcngang;w®éÈm
clùcdÝnh®¬nvÞ;ϕgãcmas¸ttrong;E
0
m«®ulbiÕnd¹ng;µ
0
hÖsènë
ngang;q
c
c−êng®ékh¸ngxuyªntÜnh;NchØtiªutrongSPT
5
Tr−êng§¹ihäcX©yDùng




C©u1
H•yvÏh×nhnªuyªucÇucÊut¹ocètthÐptrongb¶nmãngn«ngd−íit−êngvDgi¶ithÝch
t¹isao?
C©u2
NhËnxÐtvÒhÖsèantoDntrongph−¬ng¸nmãngn«ngd−íit−êngsau®©y:
BÒréngmãngb=2m,ch«ns©u1,5m
T¶iträngtÝnhto¸nt¸cdôngëmøc®¸ymãngp=20T/m
2
.
NÒn®Êtgåmhailíp:
+LíptrªndDy1,5m,thuéclo¹isÐtphaγ=1,7T/m
3
,
Lípd−íilDsÐt®ångnhÊtγ=1,82T/m
3
,c=1,9T/m
2
,ϕ=10
0
.
C©u3
X¸c®ÞnhvDbètrÝcètthÐptrong®Dicñamãngcäc®Did−íicét40x40(cm)nh−sau:
Cäc25x25(cm),dDi12m,ngDmtrong®Di10cm,gåm6cäc(2hDng)bètrÝ
c¸ch®Òutheoc¶haiph−¬ngvíikho¶ngc¸chL=1m,
CäcchÞut¶i®ÒunhauP=25T,
ChiÒucao®Di0,8m.
C©u4
X¸c®ÞnhsøcchÞut¶icñacäctheokÕtqu¶xuyªntÜnhbiÕt:
CäccãchiÒudDiL=12m,tiÕtdiÖn30x30cm.
§¸y®Din»më®és©u1,5msovíimÆt®Êttùnhiªn.
NÒn®Êtgåm2líp: +Líp1:dDy8mcãB=1,35;.
+Líp2:c¸th¹ttrung,chÆtvõadDy>20m
C©u5
ChométvÝdôb»ngsèvÒx¸c®ÞnhsøcchÞut¶icñacäcb»ngc¸ch®ãngthö®o®échèi
cñacäc.