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BO CO TI NGHIN CU KHOA HC
1
NH GI H I U Q U V T H I GIAN V CH I PH CA CC H T H NG C P PH A T
RO NG XY D NG NH CAO T NGSinh vin thc hin: Hunh Quc Uy Li Vn Qu
Hunh V Ph Hng Hang Trung Bu Gio vin hng dn: TS. Nguyn Duy Long
NI DUNG BO CO2
1. t vn . 2. Mc tiu nghin cu. 3. Phng php nghin cu. 4. Gii thiu
tng quan v cc loi cp pha. 5. Kho st v 2 d n c nghin cu. 6. nh gi
hiu qu ca 2 loi coppha Nhm v coppha vn ph phim. 7. Kt lun.
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T VN 3
Ngnh xy dng hin nay ca chng ta a s u s dng
vt liu b tng ct thp,do vn to vn khun cp pha nh hng rt nhiu n nng
sut thi cng. Hin nay c rt nhiu h thng cp pha cho nng sut thi
cng v chi ph khc nhau. t ra vn cn nghin cu so snh tm ra h
thng
coppha c nng sut cao y nhanh tin v gim gi thnh thi cng.
MC TIU NGHIN CU4
1. Kho st nng sut, thi gian v chi ph thi cng cc loi cp pha ang c
s dng ti cc cng trng trn a bn TP.HCM 2. So snh v nh gi hiu qu 2 loi
cp pha Nhm v vn ph phim c s dng cng trnh cao tng ang c xy dng ti
TP.HCM 3. Rt ra kt lun v nh hng ca cc loi cp pha n nng sut v thi
gian thi cng ca cng trnh.
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NI DUNG CNG VIC LM5
1. Tip cn nhng cng ty cung cp cp pha ti thnh ph H Ch Minh. 2. Tm
hiu v ti liu kho st cc loi cp pha ang s dng ti cng trng hin nay
thng qua cc nghin cu trc y. 3. Tm hiu d liu thi cng ca 2 cng trng c
mi trng xy dng tng ng nhng s dng hai loi ct pha khc nhau. 4. Thng k
nhng kt qu nghin cu c v a ra kt lun.
GII THIU TNG QUAN V CC LOI COPPHA6
Cp pha thp Cp pha nha Cp pha nhm Cp pha vn p ph phim
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COPPHA THP7
1.u im: - S ln s dng li nhiu . - chnh xc cao. - a dng v kch thc.
- Cht lng b mt b tng tt. 2.Nhc im: - Khi lng coppha tng i nng. -
Thi cng khng nhanh nh cc loi cp pha nha. - D cong, vnh, bm dnh b
tng. - Nng n, kh vn chuyn. - Khng an ton trong s dng.
COPPHA NHA8
1.u im: - Thi cng v d cp pha nhanh. - S dng c trn 100 ln - Khng
phi tn chi ph bo tr v lu kho sau khi s dng. -Sau hoc trc khi b tng,
ch cn lm sch bng nc - Nh v kh an ton khi s dng - Cho cht lng b mt b
tng cao.
2.Nhc im - Thi cng dm, tng, mng, ct th phi tn rt nhiu gng, xng
st hp. - Chi ph u t ban u cao. - vng ln v km n nh. - Cng nhn khi
thi cng cp pha phi c gim st k. - Thit b ph tr mc tin.
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COPPHA NHM9
1.u im -Trng lng nh hn so vi cc loi coppha thng thng khc. - Nng
tng nhanh chng. - Ti s dng nhiu ln, an ton v sinh cng trng. - Cho b
mt b tng tt. 2.Nhc im - Qu trnh thi cng phc tp i hi cng nhn c tay
ngh cao. - Chi ph u t ban u v bo dng cao.
COPPHA VN PH PHIM10
1.u im - B mt phng tuyt i, do gip b mt sn phng, khng cn t va sau
khi b tng. - D ct x thnh nhiu hnh dng modun khc nhau. - Nh v d lp
t. 2.Nhc im - T l thu hi ti s dng thp. - Cn kho cha bo qun.
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SO SNH TNG HP V CC LOI COPPHACc c im chnh S ln s dng Cht lng b
mt Trng lng Tnh an ton Chi ph bo dng G 5 10 ln Tt nhng gim nhanh
theo s ln s dng Trung bnh (10 kg/m) Bnh thng Ph thuc ma nng v vic
ca ct Khng c kh nng ti ch m thnh cht thi phi x l Cn nh kho trnh ma
nng Thp 20 50 ln Tt nhng gim do b r v bin dng Nng (+/- 31kg/m) Nguy
him Cao
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Nhm Trn 100 ln Tt Nh (+/- 20kg/m) Tt Trung bnh
FUVI Coppha Trn 100 ln Tt Rt nh (7kg/m) Rt tt Thp
Kh nng ti ch
t
Thu hi t nht 20% gi tr
Thu hi t nht 20% gi tr C th ngoi tri khng cn nh kho
Lu gi
Cn nh kho trnh ma nng
Cn nh kho trnh ma nng
Ngun: http://www.fuvicoppha.com/english/apps.html
TNG QUAN V CC LOI COPPHA THNG QUA NHNG NGHIN CU TRC Y 12
Cc h thng cppha ang c s dng hin nay:
Ngun : Lun vn thc s ngnh cng ngh xy dng,Trng nh Nht 2010
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TNG QUAN V CC LOI COPPHA THNG QUA NHNG NGHIN CU TRC Y13
S ln s dng li tm cppha.Loi cp pha S mu Nh nht Ln nht Trung bnh
lch chun 7.03 4.38 4.84 4.68
Cppha thp Cppha nhm Cppha nha Cppha g ph phim
24 5 11 27
5.00 26.00 8.00 5.00
30.00 38.00 23.00 20.00
22.04 30.80 15.63 9.44
Ngun : Lun vn thc s ngnh cng ngh xy dng,Trng nh Nht 2010
TNG QUAN V CC LOI COPPHA THNG QUA NHNG NGHIN CU TRC Y14
. Nng sut ca cc h thng cppha.(m2/ngi.ngy)
Cp pha thp
Cp pha nhm
Cp pha nha
Cp pha g ph phim
S mu
24
5
11
27
Trung bnh lch chun
4.81.6
5.31.1
4.41.5
5.12.4
Ngun : Lun vn thc s ngnh cng ngh xy dng,Trng nh Nht 2010
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SO SNH H THNG COPPHA 2 CNG TRNH SUNRISE CITY V H1815
1) Thng tin chung v 2 d n c nghin cu. 2) nh gi hiu qu v nng sut
ca 2 loi coppha. a) Ch tiu v s lng cng nhn. b) Thi gian thi cng 1
sn. c) Ch tiu nng sut ca cng nhn coppha (m2/ngi/ngy). d) Ch tiu lun
lu coppha. e) Ch tiu v gi thnh. 3) nh gi hiu qu v chi ph ca 2 loi
coppha.
SO SNH H THNG COPPHA 2 CNG TRNH SUNRISE CITY V H1816
1)Thng tin chung v 2 d n c nghin cu:Thng tin Hnh nh D n Sunrise
City D n H18
Loi cng trnh
Chung c,cn h cao cp 753m2 34 tng 6 Cp pha nhm
Chung c,cn h cao cp 915m2 25 tng 3 Cp pha g-ph phim
Din tch sn in hnh S tng S block H cp pha thi cng
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CH TIU V S LNG CNG NHN17Sunrise City S mu Gi tr trung bnh lch
chun Nh nht Ln nht 9.0 36.8 10.3 29.0 55.0 H18 9.0 66.4 20.1 32.0
96.0S ln lp li
S lng cng nhn ca H182.5 2 1.5 1 0.5 0 0 25 50 75 100 125 0.025
0.02 0.015 0.01 0.005 0 S ln lp li
S lng cng nhn
Nhn xt: - Din tch tng in hnh Sunrise nh hn H18 17.7%, nhng lng
cng nhn trung bnh t hn 45%. - S lng cng nhn trung bnh Sunrise City
khng c bin ng nhiu nh H18.
S lng cng nhn ca SUNRISE6
s ln lp li
5 4 3 2 1 0 0 6 12 18 24 30 36 42 48 54 60
0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0
S ln lp li
ng phn phi chun
S lng nhn cng
THI GIAN THI CNG 1 SN18Sunrise S mu Gi tr trung bnh lch chun Nh
nht Ln nht 9.00 9.22 2.73 5.00 13.00 H18 9.00 10.89 1.54 9.00
13.00
Thi gian thi cng 1 sn H184.5 4 3.5 3 2.5 2 1.5 1 0.5 0 4 6 8 10
12 14 16 more 0.25 0.2 0.15 0.1 0.05 0 -0.05 ng phn phi chun S ln
lp li
S ln lp li
Nhn xt Thi gian thi cng mt sn ca Sunrise t hn 15.4% so vi H18 mc
d s lng cng nhn ca H18 nhiu hn 1.8 ln so vi Sunrise.
S ln lp li
Thi gian
Thi gian thi cng 1 sn SUNRISE3.5 3 2.5 2 1.5 1 0.5 0 0 2 4 6 8
10 12 14 16 more 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 s ln lp
li
Thi gian
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CH TIU NNG SUT CA CNG NHN (ng/m2)19Sunrise S mu Gi tr trung bnh
lch chun Nh nht Ln nht H18
H184.5 4 3.5 3 2.5 2 1.5 1 0.5 0 0 0.5 1 1.5 2 2.5 3 more 1 0.9
0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -0.1
9.0 2.7 1.4 1.3 5.0
9.0 1.4 0.4 0.8 2.2S ln lp li
S ln lp li
Nng sut (ng/m2)
Nhn xt H thng coppha Nhm cng trnh Sunrise City c nng sut lp t
cao gn gp 1.9 d n H18. Chng t h thng coppha Nhm c hiu qu cao hn
nhiu so vi coppha vn ph phim.
SUNRISE2.5 2 1.5 1 0.5 0 0.3 0.25 0.2 0.15 0.1 0.05 0 S ln lp
li
S ln lp li
Nng sut (ng/m2)
CH TIU LUN LU COPPHA20
Sunrise City S mu Gi tr trung bnh lch chun Nh nht Ln nht 3 12.00
4.36 9 17
H18 6 24.33 2.80 19 27
Nhn xt: H thng coppha Nhm Sunrise City c lun lu cao gp i so vi h
thng coppha vn ph phim H18. Chng t coppha nhm c h s s dng cao hn
nhiu so vi vn p ph phim.
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CH TIU V GI THNH21
KT QU Gi thnh thi cng h thng cppha nhm 130.541 VND/m2, gi thnh
thi cng h thng cppha g ph phim 115.563 VND/m2. Hai h thng ny chnh
nhau l 13.04%. S chnh lch ny khng c nhiu. Gi thnh u t h thng cppha
nhm d n Sunrise l 6.270.700,79 VND/m2 , v h thng cppha g ph phim d
n H.18 l 1.876.187,11 VND/m2. Nh vy gi u t h thng cppha nhm gp 3,3
ln h thng cppha vn ph phim.
CH TIU V GI THNH22
Bng 3.14 Gi thnh thi cng d n
Sunrise
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CH TIU V GI THNH23
Bng 3.14 Gi thnh thi cng d n
Sunrise
KT LUN CA BI NGHIN CU24
Qua nhng ch tiu nghin cu th ta thy c : Ct pha nhm vt
tri hn vn-ph phim v thi gian thi cng, nng sut v lun lu gp 2 ln.
Tuy nhin, h cppha Nhm cn mt nhc im gi u t ban u
cn cao. Gp 3,3 ln so vi vn-ph phim. iu ny gay cn tr cho vic s
dng h thng cp pha nhm cng trnh nh cao tng. Vic gi thnh cao l do hin
nay trong nc ta vn cha c nh sn
xut cp pha nhm, a phn phi nhp t nc ngoi. Nh vy nu nc ta c th sn
xut cp pha nhm th gi thnh c th gim xung v vic ng dng cp pha nhm s
ng gp nhiu trong vic y nhanh tin v nng sut thi cng.
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