Luận văn thạc sĩ Kỹ thuật xây dựng: Phân tích ảnh hưởng của kích thước mẫu nén trong thí nghiệm nén cố kết đến các đặc trưng biến dạng của đất và ứng dụng tính toán độ lún của nền đất khi gia tải trước

Trong luұQQj\ WiFJLҧ tұSWUXQJWKt QJKLӋP QpQFӕ kӃt vӟLFiFORҥLÿѭӡQJNtQK Pүu QpQFPFPFPYjFiFORҥi chiӅu cao: 2cm, 3cm, 4cm nhҵPSKkQWtFKҧQKKѭӣng cӫDNtFKWKѭӟc mүXQpQWURQJWKtQJKLӋPQpQFӕ kӃWÿӃQFi

ĈӏDFKҩWF{QJWUuQK± ĈӏDFKҩWWKӫ\YăQ

a ĈӏDFKҩWF{QJWUuQK KӃt quҧ F{QJWiFNKҧRViWÿӏa chҩWF{QJWUuQKWҥi vӏ WUt[k\Gӵng F{QJWUuQK ³5LYLHUD3RLQW´WҥL3KѭӡQJ7kQ3K~- Quұn 7 ± Tp.HCM Fyÿӝ VkX khҧRViWVkXQKҩWOjPFKRWKҩ\FiFOӟSÿҩt tҥLÿk\FyQKӳQJÿһFÿLӇPQKѭVDX x LӟSFiWÿҳS3KkQEӕ QJD\WUrQPһWFiFKӕ khoan BH10, BH13, BH17, BH22,

%+Yj %+OjOӟSFiWVDQlҩS&iWPӏn trung lүn bөLPjX[iPQkX-[iP ÿHQYӟi bӅ Gj\WKD\ÿәi tӯ 1.0-PĈk\OjOӟSÿҩt rӡi xӕp x Lӟp sӕ &+3KkQEӕ QJD\WUrQPһWFiFKӕ NKRDQYjVDXOӟSFiWÿҳSOjOӟp VpWOүn bөi, chҧy, bӅ Gj\WKD\ÿәi tӯ PÿӃQPĈk\OjOӟSÿҩt rҩt yӃu, sӭc chӏu tҧi rҩt thҩSÿӝ O~QQKLӅu, rҩWNK{QJWKXұn lӧi cho viӋF[k\GӵQJF{QJ WUuQK x Lӟp sӕ &/3KkQEӕ theo sau lӟp sӕ OjOӟSVpWSKDOүn bөi, dҿo mӅm, bӅ Gj\ WKD\ ÿәi tӯ P ÿӃQ P Ĉk\ Oj OӟS ÿҩt yӃu, sӭc chӏu tҧi thҩS NK{QJ thuұn lӧi cho viӋF[k\GӵQJF{QJWUuQK x Lӟp sӕ D&/3KkQEӕ tiӃp theo sau lӟSÿҩt sӕ 2 tҥi mӝWYjLKӕ NKRDQOjOӟp VpWSKDOүn bөi, dҿo cӭng-nӱa cӭng, bӅ Gj\OӟSQj\WKD\ÿәi tӯ PÿӃn 10.8m

LӟS Qj\ Fy NKҧ QăQJ FKӏu tҧL WUXQJ EuQK Fy WKӇ sӱ dөng cho viӋc xk\ Gӵng F{QJWUuQK x Lӟp sӕ E&+3KkQEӕ tiӃp theo sau lӟSÿҩt sӕ DOjOӟSVpWOүn bөi, dҿo cӭng-nӱa cӭng, bӅ Gj\WKD\ÿәi tӯ PÿӃQPULrQJWҥi BH02.3m) Lӟp Qj\FyNKҧ QăQJFKӏu tҧLWUXQJEuQK-NKiFDRFyWKӇ sӱ dөng cho viӋF[k\Gӵng c{QJWUuQK x Lӟp sӕ 4: SP-603KkQEӕ tiӃp theo sau lӟSVpWVӕ DEOjOӟSFiWPӏn trung lүn bөLÿ{LFKӛ FyOүn sӓi thҥch anh, chһt vӯa, bӅ Gj\Fӫa lӟSWKD\ÿәi tӯ 9.3m ÿӃQPULrQJWҥi BH03=6.4m, BH05=7.1m) LӟSQj\FyNKҧ QăQJFKӏu tҧi WUXQJEuQKYj bӅ Gj\SKkQEӕ NKiOӟQFyWKӇ sӱ dөng cho viӋF[k\GӵQJF{QJ WUuQK x Lӟp sӕ &+3KkQEӕ tiӃSWKHRVDXFiFOӟSWUrQOjOӟSVpWOүn bөi, dҿo cӭng- cӭng, bӅ Gj\WKD\ ÿәi tӯ P%+ÿӃn 5.5m (BH03) LӟSQj\ Fy EӅ Gj\

SKkQEӕ FNJQJQKѭNKҧ QăQJFKӏu tҧi NK{QJÿӗng nhҩWNK{QJWKXұn lӧi cho viӋc [k\GӵQJF{QJWUuQK x Lӟp sӕ 6: SC-SM: TiӃp theo sau lӟSÿҩt sӕ 5 tҥi mӝWYjLKӕ NKRDQOjOӟSFiWKҥt mӏn lүn bөi, chһt vӯa, bӅ Gj\SKiWKLӋQWKD\ÿәi tӯ PÿӃn 2.4m LӟSQj\Fy khҧ QăQJFKӏu tҧLWUXQJEuQK b ĈӏD FKҩWWKӫ\YăQ VӅ mһWÿӏa chҩt thӫ\YăQPӵFQѭӟc ngҫPÿѭӧFTXDQViWPӛi buәLViQJWҥi 25 vӏ WUt Kӕ khoan trong suӕW TXi WUuQK NKRDQ YjR WKiQJ SKҫn lӟQ FiF Kӕ NKRDQÿӅu bӏ ngұSQѭӟF5LrQJPӵFQѭӟc tҥi hӕ khoan BH10, BH13, BH26 (khu vӵFÿѭӧc san lҩSÿ{LNKLEӏ ngұSQѭӟc phө thuӝFYjRFKӃ ÿӝ thӫy triӅu

B̫ng 3.1 B̫ng t͝ng hͫSÿ͓a ch̭t

3.2.1 7KXWKұSPүXÿҩW Ӕng lҩy mүXFyÿѭӡQJNtQKQJRjLPPÿѭӡQJNtQKWURQJPPFKLӅXGjL 2m 4XLWUuQKOҩy mүu:

- ĈjREӓ lӟp rӉ Fk\EӅ mһt - Ҩn ӕng mүu xuӕng mӝWFiFKWӯ tӯ YjQKҽ QKjQJÿӃn hӃt chiӅXGjLӕng (3m)

- BӏWÿҫu ӕng bҵng mӝt lӟSFDRVXÿӇ tҥRiSOӵFFKkQNK{QJNKLNpRPүXOrQ WKuPүu sӁ NK{QJEӏ tuӝt

- pRPүXOrQPӝWFiFKWӯ tӯ YjQKҽ QKjQJ - BӏWÿҫu ӕng bҵng bao nilon nhҵPWUiQKVӵ mҩWÿӝ ҭm - Vұn chuyӇn mүu vӅ SKzQJWKtQJKLӋm

+uQK3.4 ĈjRE͗ lͣp r͍ Fk\E͉ m̿WYj̭n ͙ng ḽy m̳u YjRÿ̭t

3.2.2 7KtQJKLӋP[iFÿӏQKVӭFFKӕQJFҳWFӫDÿҩW

- TKtQJKLӋm QpQba trөc CU vӟi 3 cҩSiSOӵc: 50kPa, 100kPa, 150kPa

- MөFÿtFK[iFÿӏQKFiFWK{QJVӕ sӭc chӕng cҳt cӫDÿҩWFijYjFảijả Phөc vө cho viӋc WtQKWRiQ gia tҧLWUѭӟc YjP{SKӓng Plaxis

+uQK3.6 7KtQJKL m QpQba trͭc a *LDLÿRҥQFӕNӃW

+uQK3.9 C͙ k͇t vͣLiSO͹c 150kPa b *LDLÿRҥQQpQ

+uQK3.10 1pQP̳XÿmF͙ k͇t vͣLiSO͹c 50kPa

+uQK3.11 1pQP̳XÿmF͙ k͇t vͣLiSO͹c 100kPa

+uQK3.12 1pQP̳XÿmF͙ k͇t vͣLiSO͹c 150kPa c .ӃWTXҧWKtQJKLӋP

B̫ng 3.2 B̫ng k͇t qu̫ WKtQJKL PQpQEDWUͭc ı 3 ı 1 U ı 1 ' ı 3 ' (ı 1 - ı 3 )/2 (ı 1 + ı 3 )/2 (ı 1 '+ ı 3 ')/2 50 125.8923 20.9 104.9923 29.1 37.94614 87.94614 67.04614 100 223.2657 52.7 170.5657 47.3 61.63285 161.6328 108.9328 150 299.7945 88 211.7945 62 74.89724 224.8972 136.8972 ĈѫQYӏ: kN/m 2

+uQK3.13 Ĉ˱ͥng sͱc ch͙ng c̷t B̫ng 3.3 K͇t qu̫ WKtQJKL PQpQEDWUͭc ijÿӝ 15.73683 ijÿӝ 32.13176

3.2.3 7KtQJKLӋPQpQFӕNӃW YӟLFiFNtFKWKѭӟFPүXQpQNKiFQKDX

- 7KtQJKLӋm vӟLFiFPүXQpQFyNtFKWKѭӟFQKѭVDX

DiӋQWtFKFP 2 ) 20 30 50 50 50 ChiӅu cao (cm) 2 2 2 3 4

- 7Kt QJKLӋP QpQ Fӕ kӃW WUrQ Pүu QJX\rQ Gҥng vӟL FiF FҩS iS Oӵc 12.5kPa, 25kPa, 50kPa, 100kPa, 200kPa, 400kPa ÿӇ [iFÿӏQKÿһc WUѭQJQpQO~QFӫDÿҩt

- KLEmRKzDPүu phҧLFK~êÿӃn mӵFQѭӟc phҧi ngұSOrQÿӃQÿiWKҩPSKtDWUrQ 9uYұ\ÿӕi vӟi nhӳng mүXFyFKLӅXFDRFPWKuSKҧi quҩQWKrPOӟSEăQJNHRÿӇ FyWKrPOjPQJұSQѭӟFÿӃQÿiWKҩPSKtDWUrQ

0 50 100 150 200 250 300 350 ӭQJVXҩWFҳWı 1 -ı 3 )/2 (kN/m 2 ) ӭQJVXҩWFKtQKı 1 ı 3 )/2 (kN/m 2 )

+uQK3.14 %mRKzDFiFP̳XKWU˱ͣc khi gia t̫i

3.3.1 ҦQKKѭӣQJFӫDÿѭӡQJNtQKPүXQpQÿӃQFiFÿһFWUѭQJELӃQGҥQJ a ҦQKKѭӣQJFӫDÿѭӡQJNtQKPүXQpQÿӃQWӍOӋELӃQGҥQJ

+uQK3.17 Ĉ͛ th͓ e-ORJSWKtQJKL m l̯n thͱ nh̭t

+uQK3.18 Ĉ͛ th͓ e-ORJSWKtQJKL m l̯n thͱ hai

e-log(p)

P(kG/cm 2 ) e-log(p) d= 5.05cm d=6.18cm d= 7.98cm

+uQK3.19 Ĉ͛ th͓ e-ORJSWKtQJKL m l̯n thͱ ba b ҦQKKѭӣQJFӫDÿѭӡQJNtQKPүXQpQÿӃQKӋVӕ QpQWKӇWtFKPv

+uQK3.20 Ĉ͛ th͓ m v -ORJSWKtQJKL m l̯n thͱ nh̭t

P(kG/cm 2 ) e-log(p) d= 5.05cm d= 6.18cm d= 7.98cm

m v -log(p)

+uQK3.21 Ĉ͛ th͓ m v -ORJSWKtQJKL m l̯n thͱ hai

+uQK3.22 Ĉ͛ th͓ m v -ORJSWKtQJKL m l̯n thͱ ba

P(kG/cm 2 ) m v -log(p) d= 5.05cm d= 6.18cm d= 7.98cm

P(kG/cm 2 ) m v -log(p) d= 5.05cm d= 6.18cm d= 7.98cm c ҦQKKѭӣQJFӫDÿѭӡQJNtQKPүXQpQÿӃQKӋVӕFӕNӃW C v

+uQK3.23 Ĉ͛ th͓ C v -ORJSWKtQJKL m l̯n thͱ nh̭t

+uQK3.24 Ĉ͛ th͓ C v -ORJSWKtQJKL m l̯n thͱ hai

C v -log(p)

+uQK3.25 Ĉ͛ th͓ C v -ORJSWKtQJKL m l̯n thͱ ba d ҦQKKѭӣQJFӫDÿѭӡQJNtQKPүXQpQÿӃQKӋVӕQpQWӯELӃQ&Į

+uQK3.26 Ĉ͛ th͓ C Į -ORJSWKtQJKL m l̯n thͱ nh̭t

C Į -log(p)

+uQK3.27 Ĉ͛ th͓ C Į -ORJSWKtQJKL m l̯n thͱ hai

+uQK3.28 Ĉ͛ th͓ C Į -ORJSWKtQJKL m l̯n thͱ ba e 3KkQ WtFK NӃW TXҧ QpQ Fӕ NӃW NKL WăQJ ÿѭӡQJ NtQK PүX QpQ Wӯ FP OrQ FPYjFP

- KLWăQJÿѭӡQJNtQKPүXQpQWӍ lӋ biӃn dҥQJFNJQJWăQJ1Ӄu so vӟi mүu cy ÿѭӡQJNtQKFPWDFyEҧQJFKrQKOӋch tӍ lӋ biӃn dҥQJQKѭVDX

B̫ng 3.5 B̫QJVRViQKW͑ l bi͇n d̩ng NKLWăQJÿ˱ͥQJNtQKP̳XQpQ

WKtQJKLӋPOҫQ WKtQJKLӋPOҫQ WKtQJKLӋPOҫQ

- KLWăQJÿѭӡQJNtQKPүXQpQ hӋ sӕ QpQPv Fy[XKѭӟQJWăQJ 1KѭQJYӟLFiF cҩSiSOӵc lӟQKѫQiSOӵc tiӅn cӕ kӃWWKuFKrQKOӋFKQj\NKiQKӓ NӃu so vӟi mүXFyÿѭӡQJNtQKFPWDFyEҧng FKrQKOӋch tӍ lӋ biӃn dҥQJQKѭVDX

B̫ng 3.6 B̫QJVRViQKK s͙ QpQP v NKLWăQJÿ˱ͥQJNtQKP̳XQpQ

WKtQJKLӋPOҫQ WKtQJKLӋPOҫQ WKtQJKLӋPOҫQ 5.05 cm

- KLWăQJÿѭӡQJNtQKPүXQpQ hӋ sӕ cӕ kӃt Cv Fy[XKѭӟng giҧm.NӃu so vӟi mүXFyÿѭӡQJNtQKFPWDFyEҧQJFKrQKOӋch tӍ lӋ biӃn dҥQJQKѭVDX

B̫ng 3.7 B̫QJVRViQKK s͙ c͙ k͇t C v NKLWăQJÿ˱ͥQJNtQKP̳XQpQ

WKtQJKLӋPOҫQ WKtQJKLӋPOҫQ WKtQJKLӋPOҫQ 5.05 cm

- HӋ sӕ QpQ WKӭ cҩp CĮ ӣ FiF Pүu QpQ Fy ÿѭӡQJNtQK NKiF QKDX Fy Vӵ biӃn ÿӝng lӟn

B̫ng 3.8 B̫QJVRViQKK s͙ QpQWKͱ c̭p C Į NKLWăQJÿ˱ͥQJNtQKP̳XQpQ

WKtQJKLӋPOҫQ WKtQJKLӋPOҫQ WKtQJKLӋPOҫQ 5.05 cm

- ÈSOӵc tiӅn cӕ kӃWGDRÿӝng tӯ ÿӃn 0.5 kG/cm 2 - ChӍ sӕ QpQ&FGDRÿӝng tӯ: 0.83 ÿӃn 0.92

+uQK3.29 Bi͋Xÿ͛ s͹ WKD\ÿ͝i P c ,C c ,C s NKLWăQJÿ˱ͥQJNtQKP̳XQpQ

- KӃt quҧ WKtQJKLӋm cӫDWiFJLҧ FyVӵ WѭӣQJÿӗng vӟLFiFQJKLrQFӭu cӫa S.H

Chew & S K BharatiNKLWăQJÿѭӡQJNtQKPүXQpQWӍ lӋ biӃn dҥng cӫa mүu WăQJOrQ1JX\rQQKkQWKDRWiFJLҧ YjFiFQJKLrQFӭXWUѭӟFOjGRҧnh Kѭӣng cӫa mӭFÿӝ ÿӗng nhҩt cӫDÿҩt

3.3.2 ҦQKKѭӣQJFӫDFKLӅXFDRPүXQpQÿӃQFiFÿһFWUѭQJELӃQGҥQJ a ҦQKKѭӣQJFӫDFKLӅXFDRPүXQpQÿӃQWӍOӋELӃQGҥQJ

+uQK3.31 Ĉ͛ th͓ e-ORJSWKtQJKL m l̯n thͱ nh̭t

+uQK3.32 Ĉ͛ th͓ e-ORJSWKtQJKL m l̯n thͱ hai

+uQK3.33 Ĉ͛ th͓ e-ORJSWKtQJKL m l̯n thͱ ba

P(kG/cm 2 ) e-log(p) h,m h b ҦQKKѭӣQJFӫDFKLӅXFDRPүXQpQÿӃQKӋVӕQpQWKӇWtFKP v

+uQK3.34 Ĉ͛ th͓ m v -ORJSWKtQJKL m l̯n thͱ nh̭t

+uQK3.35 Ĉ͛ th͓ m v -ORJSWKtQJKL m l̯n thͱ hai

+uQK3.36 Ĉ͛ th͓ m v -ORJSWKtQJKL m l̯n thͱ ba c ҦQKKѭӣQJFӫDFKLӅXFDRPүXQpQÿӃQ KӋVӕFӕNӃW& v

+uQK3.37 Ĉ͛ th͓ C v -ORJSWKtQJKL m l̯n thͱ nh̭t

C v -log(p)

ҦQKKѭӣQJYLӋFJKLVӕOLӋXWKӫF{QJYjJKLVӕOLӋXWӵÿӝQJÿӃQÿӃQFiF

ÿһFWUѭQJELӃQGҥQJ a .ӃWTXҧFӫDWiFJLҧ

+uQK3.46 K͇t qu̫ ÿ͕c s͙ li u t͹ ÿ͡ng t̩i c̭SiSO͹c 0.5 kG/cm 2 b .ӃWOXұQ

ViӋFÿӑc sӕ liӋu tӵ ÿӝng vӟi thӡLJLDQJLk\mӝt lҫn sӁ cho kӃt quҧ chi tiӃWÿӝ O~Q theo thӡi gian

Theo TXDQViWWӯ kӃt quҧ WKtQJKLӋPWiFJLҧ nhұn thҩy ӣ cҩSiSOӵc 0,5kG/cm 2 tӹ lӋ biӃn dҥQJWURQJTXiWUuQKWӯ biӃQFy[XKѭӟQJWăQJ, ÿLӅXQj\ theo Larrson (1977) Fy thӇ mүXÿmÿҥWÿӃQQJѭӥQJSKiKRҥi.ĈLӅXQj\NKyFyWKӇ nhұQUDNKLÿӑc sӕ liӋu theo FiFKWKӫ F{QJ y = 0.1063ln(x) + 0.9104 y = 0.0584ln(x) + 1.125 y = 0.126ln(x) + 0.7293 y = 0.1002ln(x) + 0.9131 0.8

+uQK3.47 &iFJLDLÿR̩QO~QWKHR/DUUVRQ

Vӟi viӋFÿӑc sӕ liӋu thӫ F{QJchӍ ÿӑc 2 sӕ liӋu cuӕi tҥLW SK~WYjSK~W sӁ NK{QJQKұn thҩ\ÿѭӧc sӵ SKiKRҥi cӫa mүXÿҩW*k\ҧQKKѭӣng lӟQÿӃn viӋF[iF ÿӏnh d100 cho viӋFWtQKWRiQKӋ sӕ cӕ kӃWWKHR&$6$*5$1'(Ĉӗng thӡi ÿӝ FKtQK [iFFӫDÿӗng hӗ chuyӇn vӏ OjPP.KLNLPÿӗng hӗ nҵm giӳa hai vҥch chia nhӓ nhҩW WKu QJѭӡL WKt QJKLӋm phҧi tӵ ѭӟF OѭӧQJ ÿӝ O~Q ÿӃn phҫQ QJKuQ ĈLӅX Qj\ ҧnh Kѭӣng rҩt lӟQ ÿӕi vӟi viӋF WtQK G 0 WURQJ FiFK WtQK KӋ sӕ cӕ kӃt C v theo

&{QJWUuQK: RIVIERA POINT - Dӵ iQJLDWҧLWUѭӟc cҧi tҥRÿҩt nӅn ĈӏDÿLӇmĈѭӡng HuǤnh TҩQ3KiW Quұn 7, Tp HCM

4XLP{F{QJWUuQK: xӱ OêQӅQÿҩt yӃu bҵQJSKѭѫQJSKiSJLDWҧLWUѭӟc

+uQK4.2 Chi͉u cao ÿ̷Sÿ̭t khu v͹c s͙ 1

+uQK4.3 Chi͉u cao ÿ̷Sÿ̭t khu v͹c s͙ 2

4.2.1 .LӇPWUD әQÿӏQK a 7tQKWRiQәQÿӏQKGRO~QWUӗL

Khu vӵc gia tҧi sӕ 1 - ChiӅXFDRÿҳp tӕLÿDWҥi khu vӵc gia tҧi sӕ 1:

- Dung trӑng tӵ QKLrQFӫa lӟSÿҩWÿҳp: Ȗd = 18 (kN/m 3 ) - ÈSOӵc do khӕLÿҩWÿҳSJk\UD q = Ȗ d x H = 18x2.132 = 38.38 (kN/m 2 )

- ;pWEӅ rӝng khӕLÿҩWÿҳp tҥi vӏ WUtKҽp nhҩt cӫa mһt bҵng tҥi khu vӵc gia tҧi sӕ 2 :

- Tӹ sӕ B/h = 15/23.2 = 0.65 > 1.49 - tra theo biӇXÿӗ 0DQGHOYj6DOHQFRQÿѭӧc: HӋ sӕ sӭc chӏu tҧi

- Sӭc chӏu tҧi tӕLÿDFӫa nӅQÿҩt: q gh q gh = C u x N c = 14.3 x 5.14 = 73.5(kN/m 2 ) - HӋ sӕ DQWRjQ)

Khu vӵc gia tҧi sӕ 2 - ChiӅXFDRÿҳp tӕLÿDWҥi khu vӵc gia tҧi sӕ 2:

- Dung trӑng tӵ QKLrQFӫa lӟSÿҩWÿҳp: Ȗd = 18 (kN/m 3 ) - ÈSOӵc do khӕLÿҩWÿҳSJk\UD q = Ȗ d x H = 18x3.085 = 55.53 (kN/m 2 )

- ;pWEӅ rӝng khӕLÿҩWÿҳp tҥi vӏ WUtKҽp nhҩt cӫa mһt bҵng tҥi khu vӵc gia tҧi sӕ 2 :

- Tӹ sӕ B/h = 35/23.2 = 1.51 > 1.49 - tra theo biӇXÿӗ 0DQGHOYj6DOHQFRQÿѭӧc: HӋ sӕ sӭc chӏu tҧi

- Sӭc chӏu tҧi tӕLÿDFӫa nӅQÿҩt: qgh q gh = C u x N c = 14.3 x 5.2 = 74.36(kN/m 2 ) - HӋ sӕ DQWRjQ)

NhұQ[pW: hӋ sӕ DQWRjQYӅ әQÿӏQKGRO~QWUӗi cho ca hai khu vӵc gia tҧi 1 YjKDLOҫQOѭӧWOjYjOӟQKѫQQrQWKӓDÿLӅu kiӋn әQÿӏnh do O~QWUӗi b .LӇPWUDәQÿӏQK PiLGӕFEҵQJSKҫQPӅP*HR6WXGLR± Slope

+uQK4.4 &iFWK{QJ s͙ ÿ͓a ch̭t nh̵SYjRP{KuQK

+uQK4.5 K͇t qu̫ ͝Qÿ͓QKWU˱ͫWVkXt̩i m̿t c̷t nguy hi͋m nh̭t cͯa khu v͹c s͙ 1

+uQK4.6 K͇t qu̫ ͝Qÿ͓QKWU˱ͫWVkXt̩i m̿t c̷t nguy hi͋m nh̭t cͯa khu v͹c s͙ 2

Nhұn [pW: HӋ sӕ DQWRjQWtQKWKHR%LVKRScho hai mһt cҳt OjYj40 lӟQKѫQ 1.4; vұy kӃt luұn nӅQÿҩt thӓDÿLӅu kiӋn әQÿӏnh WUѭӧWVkX

4.2.2 7tQKWRiQÿӝO~Q FӫDÿҩWQӅQ a 7tQKWRiQO~QFKRkhu YӵFJLDWҧL

Giҧ thiӃt mһt bҵng san lҩSOjWҧLSKkQEӕ rӝng khҳp, chiӅXFDRÿҩWÿҳSWUXQJEuQKOj 1.632m

+uQK4.7 Bi͋Xÿ͛ SKkQE͙ ı bt Yjı gl WKHRÿ͡ VkX khu v͹c gia t̫i s͙ 1

Do lӟSÿҩWWUrQFQJOjÿҩt yӃXEQVpWWUҥQJWKiLFKҧ\QrQEӅ Gj\ҧQKKѭӣng O~QÿѭӧFWtQKÿӃQÿӝ VkXPjiSOӵc bҧQWKkQEҵQJPѭӡi lҫn iSOӵc Jk\O~Q7ӯ biӇXÿӗ WDFyÿѭӧc chiӅXVkXWtQKO~QVӁ Ojm

B̫ng 4.1 T͝ng hͫSWtQKWRiQÿ͡ O~QW̩i khu v͹c gia t̫i s͙ 1:

.tFKWKѭӟFPүXQpQ ĈӝO~QFXӕLFQJ ĈӝO~QWUXQJEuQK SDLVӕ %

0 100 200 300 400 500 ÿӝVkX]P нЙȋȀ 2 ) ӭQJVXҩWJk\O~Q ӭQJVXҩWEҧQWKkQ b 7tQKWRiQWKӡLJLDQFӕNӃWFӫDQӅQÿҩW c 1KұQ[pW Ĉӝ O~QWtQKWRiQWKHRFiFNӃt quҧ WKtnghiӋm vӟLFiFNtFKWKѭӟc mүXQpQNKiFQKDXFy sӵ FKrQKOӋFKNKLWăQJÿѭӡQJNtQKPүXQpQÿӝ O~QFXӕLFQJFNJQJWăQJQKѭQJNKL WăQJFKLӅu cao mүXQpQWKuÿӝ O~QOҥi giҧm Do dӵ iQFKӍ gia tҧLWUѭӟFPjNK{QJWKLӃt kӃ FiFKӋ thӕQJWKRiWQѭӟFQJDQJQKѭJLӃng FiWYjEҩc thҩPQrQWKӡLJLDQÿӇ nӅQÿҩt ÿҥWÿӝ O~QәQÿӏnh rҩWOkXKѫQQăP

4.3 0é3+Ӓ1*%ơ,72ẩ175ầ13+Ҫ10ӄ03/$;,6' 4.3.1 7tQKWRiQFiFWK{QJVӕFKRP{KuQK a &iFWK{QJVӕVӭFFKӕQJFҳW: &YjijÿѭӧFOҩ\WӯWKtQJKLӋPQpQEDWUөF&8 b +ӋVӕ3RLVVRQQ ĈѭӧF [iFÿӏQKWӯFiF F{QJWKӭFNLQKQJKLӋP Ĉӕi vӟLVpWQ = 0.25+0.00225PI, vӟi 3,OjFKӍ sӕ dҿo Ĉӕi vӟLFiWĈӕi vӟLÿҩWFiW o o t

5.05cmx2cm6.18cmx2cm7.98cmx2cm7.98cmx3cm7.98cmx4cm c 0{ÿXQELӃQGҥQJE oed

400 1.467 29.270 Ta thiӃt lұSSKѭѫQJWUuQKÿѭӡQJQpQQKѭKuQKGѭӟi

VӟLiSOӵc ӣ giӳa lӟSÿҩt do trӑQJOѭӧng bҧQWKkQYjQӅQÿҳSJk\UDWD nӝi suy JLiWUӏ İYӟLSKѭѫQJWUuQKÿѭӡQJQpQ\5ӗi tӯ ÿyWKD\İWuPÿѭӧFYjRSKѭѫQJWUuQK\ ta WuPÿѭӧc Eoed

B̫ng 4.3B̫ng t͝ng k͇WP{ÿXQ( oed Yj( ref ĈӝVkX E oed E ref

Ta thiӃt lұSKjPVӵ WKD\ÿәi E ref WKHRÿӝ VkX

+uQK4.9 Bi͋Xÿ͛ s͹ WKD\ÿ͝i E ref WKHRÿ͡ VkX

E ref = 199.75(kN/m 2 ), y ref = 3(m), E increment = 19.74(kN/m 2 /m)

Tӯ viӋc lӵa chӑQFiFWK{QJVӕ QKѭWUrQWiFJLҧ tәng hӧp viӋc lӵa chӑQWK{QJVӕ FKRP{KuQK QKѭVDX:

B̫ng 4.4 B̫ng t͝ng hͫSFiFWK{QJV͙ ÿ͓a ch̭t nh̵SYjR3OD[LV

Type Drained UnDrained UnDrained Drained

J sat >N1Pủ@ 19.00 14.88 18.99 19.47 k x [m/day] 1.000 1.91e-4 8.81e-3 66.360 k y [m/day] 1.000 9.75e-5 8.11e-3 69.640 e init [-] 0.500 0.500 0.500 0.500 c k [-] 1E15 1E15 1E15 1E15

E inc >N1PðP@ 0.00 19.74 0.00 0.00 y ref [m] 0.000 3.000 0.000 0.000 c increment >N1PðP@ 0.00 0.00 0.00 0.00

+uQK4.11 Bi͋Xÿ͛ ÿ͡ O~Qtheo thͥi gian khu v͹c gia t̫i s͙ 1

+uQK4.12 Bi͋Xÿ͛ WKD\ÿ͝LiSO͹FQ˱ͣc l͟ r͟ng th̿QJG˱WKHRWKͥi gian khu v͹c gia t̫i s͙ 1

Sӕ liӋu quan trҳFO~QPһWÿѭӧFÿRWKHRFKXNǤ quan trҳc Sӕ ÿӑFWK{ÿREҵQJPi\ thӫy chuҭn ӣ hiӋQWUѭӡQJWtQKFDRÿӝ ÿӍnh ӕng cӫDEjQO~QPһWYjFDRÿӝ nӅQÿҳp kӃ ErQFiFEjQO~Q6ӱ dөng sӕ liӋXQj\ÿӇ WtQKÿӝ O~QWӕFÿӝ O~QYjEӅ Gj\ÿҳp cӫa nӅn ÿҩt

1 (QJj\18, 09, 2009) 2 (QJj\24, 09, 2009) 3 (QJj\01, 10, 2009) 4 (QJj\08, 10, 2009) 5 (QJj\15, 10, 2009) 6 (QJj\22, 10, 2009) 7 (QJj\29, 10, 2009) 8 (QJj\05, 11, 2009) 9 QJj\19, 11, 2009) 10 QJj\03, 12, 2009) 11 QJj\17, 12, 2009) 12 QJj\31, 12, 2009) 13 QJj\4, 01, 2010) 14 QJj\28, 01, 2010) 15 QJj\11, 02, 2010) 16 QJj\25, 02, 2010) 17 QJj\11, 03,2010) 18 (QJj\25, 03, 2010) 19 QJj\08, 04, 2010) 20 (QJj\22, 04, 2010) 21 (QJj\06, 05, 2010) 22 (QJj\20, 05, 2010) 23 QJj\03, 06, 2010) 24 QJj\17, 06, 2010) 25 QJj\01, 07, 2010) 26 (QJj\15, 07, 2010) 27 (QJj\29, 07, 2010) 28 (QJj\12, 08, 2010)

+uQK4.14 7KLF{QJEjQÿRO~QW̩i hi QWU˱ͥng

+uQK4.15 Thi͇t b͓ YjFiFKÿRFDRÿ͡ EjQO~Q B̫ng 4.5 B̫ng ghi s͙ li u quan tr̷c

THE SHEET OF READING DATA OF SUBSIDENE MONITOR1NG ON SITE

Project: Reviera point Date : 18, september 2009 Ordinate Name of points

(mm) level of point (mm) Note

+uQK4.16 Ĉ͛ th͓ ÿ͡ O~QW̩i khu v͹c gia t̫i s͙ 1

+uQK4.17 Ĉ͡ O~QWUXQJEuQKFͯa m͟LFKXNuW̩i khu v͹c s͙ 1 x Dӵ ÿRiQ ÿӝ O~Q Vѫ Fҩp cuӕL FQJ Yj PӭF ÿӝ cӕ kӃW WKHR SKѭѫQJ SKiS

'QJSKѭѫQJSKiS$VDRNDÿӇ ÿiQKJLiÿӇ ÿiQKJLiÿӝ cӕ kӃt cӫa nӅQÿҩt theo tӯQJEѭӟc sau: biӇu diӉQFiFÿLӇm ܵ ௜ ӭng vӟi thӡi gian ݐ ௜ WUrQÿӗ thӏ ÿѭӡQJFRQJO~Q theo thӡLJLDQYjFKӑn khoҧng thӡLJLDQSKkQWtFKοݐ ൌ ሺݐ ௜ െ ݐ ௜ିଵ ሻ NK{QJÿәL6DXÿy biӇu diӉQFiFÿLӇm (ߩ ௜ିଵ ǡ ߩ ௜ &iFÿLӇPQj\QҵPWUrQÿѭӡng thҷQJWKHRSKѭѫQJWUuQK sau: ܵ ௜ ൌ ߚ ଴ ൅ߚ ଵ ܵ ௜ିଵ

7URQJÿyߚ ଴ Yjߚ ଵ NK{QJSKͭ thu͡FYjRNKR̫QJFiFKοݐ ÿ˱ͫc ch͕n x ߚ ଵ OjK s͙ JyFFͯDÿ˱ͥng th̻ng x ߚ ଴ OjWXQJÿ͡ JyFFͯDÿ˱ͥng th̻ng

VӅ SKѭѫQJSKiSKuQKKӑFĈӝ O~QәQÿӏnh ܵ ௨௟௧ FyWKӇ ÿѭӧc dӵ ÿRiQWҥi phҫn giao cӫDÿѭӡng thҷQJQj\YjSKҫn giao cӫDÿѭӡng thҷQJNLDÿLTXDJӕc toҥ ÿӝ

+uQK4.18 %L͋Xÿ͛WtQKÿ͡O~QV˯F̭SFX͙LFQJWKHR$VDRND

VӅ SKѭѫQJSKiSÿҥi sӕÿӝ O~QVѫFҩp cuӕLFQJWKHRSKѭѫQJSKiS$VDRNDFy thӇ ÿѭӧFWtQKWKHRF{QJWKӭc sau ܵ ௨௟௧ ൌ െ ߚ ௢ ͳ െ ߚ ଵ

MӭF ÿӝ cӕ kӃt cӫa nӅQ ÿҩt vүQ ÿѭӧF WtQK WKHR SKѭѫQJ SKiS WK{QJ WKѭӡng, FKtQK Eҵng tӍ sӕ cӫD ÿӝ O~Q Fӕ kӃt ӣ thӡL ÿLӇm hiӋn tҥi (S c(t) Yj ÿӝ O~Q Fӕ kӃt cuӕi FQJ Ĉӝ O~QFӕ kӃt ӣ thӡLÿLӇm hiӋn tҥLOjKLӋu sӕ cӫDÿӝ O~QFӫa hҥng mөFÿyWKHR sӕ liӋu quan trҳc ӣ thӡLÿLӇm hiӋn tҥLYjÿӝ O~QWӭc thӡLÿѭӧFWtQKWKRQJTXD6 ult : ܵ ௖ሺ௧ሻ ൌ ܵ ௧ െ ܵ ௜ ൌ ܵ ௧ െ ͲǤͳ כ ܵ ௨௟௧ 7URQJÿy x ܵ ௧ cӫDÿӝ O~QÿRÿѭӧc theo sӕ liӋu quan trҳc ӣ thӡLÿLӇm hiӋn tҥi x ܵ ௜ Ojÿӝ O~QWӭc thӡi

KӃt quҧ SKkQWtFK$62.$Gӵ ÿRiQÿӝ O~QFXӕLFQJ

B̫ng 4.6 B̫ng t͝ng hͫp k͇t qu̫ SKkQWtFK$6$2.$

NhұQ[pWKӃt quҧ SKkQWtFK$6$2.$Gӵ EiRÿӝ O~QFXӕLFQJWҥLFiFYӏ WUt NKiFQKDXFyVӵ FKrQKlӋch, nJX\rQQKkQFӫa hiӋQWѭӧQJQj\WKHRWiFJLҧ OjGRÿӏa chҩWNK{QJÿӗng nhҩt tҥLFiFYӏ WUtTXDQWUҳc 1JRjLUDWURQJTXiWUuQKJLDWҧLFzQ FyVӵ hoҥWÿӝng cӫDFiFSKѭѫQJWLӋQWKLF{QJQKѭ[HEHQ[HӫL[HOX/jPҧnh KѭӣQJÿӃn kӃt quҧ quan trҳc

4.4 .ӂ7/8Ұ1 Ĉӝ O~QFXӕLFQJWKHRWtQKWRiQgiҧLWtFKFKRNӃt quҧ gҫn bҵng vӟLÿӝ O~QNKL P{SKӓng bҵng PLAXIS tҥLWkPFӫa khӕLÿҩWÿҳp Ĉӝ O~QFXӕLFQJWӯ kӃt quҧ SKkQWtFK$6$2.$WKHRVӕ liӋu quan trҳFFyVӵ FKrQKOӋFKNKiOӟn so vӟLWtQKWRiQgiҧLWtFK Ĉӝ O~Q NKLP{SKӓng bҵng PLAXIS tҥi vӏ WUtFiFKPiLGӕc cӫa khӕLÿҩWÿҳp 10m cho kӃt quҧ gҫn giӕng vӟi kӃt quҧ quan trҳc

7KHRWiFJLҧ QJX\rQQKkQOjWURQJWtQKWRiQgiҧLWtFKYjP{SKӓng PLAXIS khu vӵc gia tҧi ÿѭӟF[HPQKѭFyFKLӅXGjLY{Kҥn Trong khi thӵc tӃ khu vӵc gia

.+89Ӵ&6Ӕ- 7581*%ẻ1+ tҧLFyPһt bҵQJNKiSKӭc tҥp YjFiFYӏ WUtTXDQWUҳc nҵm gҫQPiLGӕc cӫa khӕLÿҩt ÿҳp tӯ PÿӃn 20m

+uQK4.25 Bi͋Xÿ͛ VRViQKFiFN͇t qu̫ WtQKÿ͡ O~Q͝Qÿ͓nh

+uQK4.26 Bi͋Xÿ͛ VRViQKÿ͡ O~Q͝Qÿ͓nh theo quan tr̷FYj3/$;,6W̩i g̯QPiLG͙c)

TXDQWUҳF ASAOKA WUXQJEuQK ÿӝO~QәQÿӏQKFP

WtQKO~QWӯFiFNӃWTXҧWKtQJKLӋP

1 7ӯ FiFNӃWTXҧWKtQJKLӋPQpQFӕNӃWYӟLÿҩWWҥLTXұQ7S+ӗ&Kt0LQKWiFJLҧ U~WUD FiFNӃWOXұQQKѭVDX a +ӋVӕFӕNӃWC v WtQKWKHRSKѭѫQJSKiS&$6$*5$1'(WKѭӡQJQKӓKѫQKӋ VӕFӕNӃWCv WtQKWKHRSKѭѫQJSKiS7$