KHOA HOC-C(3NG NGHE
XAY DUHG PHAN MEM KIEM TOAN MONG NONG TREN NEN TlT NHIEN MO CAU
THEO TIEU CHUAN 22f CN 272 05
TS PHAM VAN THOAN, KS, HOANG QUY C O N G Vlin kp thudt cdng trinh ddc bidt - Hgc vidn ky thudt qudn sy
Sa; bao trinh bay ca sd ly thuyet va kit qui xiy ddng phin mem kiem toin mdng ndng md cau trdn nen tu- nhien theo tiiu chuin 22TCN 272-05 bing ngdn ngCr Visual Basic theo phuong phip lip trinh huvfng doi tuxfng, co sd dO liiu Acess. Ndi dung kidm todn gdm: Kiem todn 6n dinh lit, kidm todn dn dinh truxH, kidm todn sdc chiu tai cua dit nin.
This paper presents the theoretical basis and results of design software audit on the pier foundations agricultural natural for22TCN 272-05 standard Visual Basic language by the method of object-oriented programming, database acess. The contents of the audit including audit flip stable, steady slide audit.
audit of the ground bearing capacity.
1. Dat van fie
Trong thilt ke cong trinh c^u, mong mo tru cau thudng la mong coc due sSn hoac coc khoan nh6i.
Tuy nhien. doi vdl cau nho, tai nol CO cac ldp dja chat tot vdi cudng do sdc khang ldn(vi dy nen da) cd t h i dung mong m6 nong tren nln thien nhien se giam dang ke chl phi.
Hien nay. tr§n the gidi c6 cac phan mim n6i tieng, co do tin cay cao di phan tich kit cau mong.
coc va diit nen cho ra kit qua la npi luc, dng suat v^ chuyen vj nhu FB -Pier. Plaxslc, GeoStudlo, Slope.v.v. Chung ta hoan toan co t h i khai thac, sd dung. Tuy nhien, cac phln mem nay khong the dung d l kilm to^n ket cau nln mong c l u theo ti§u chuan ng^nh 22TCN 272-05, 0 Viet Nam.
trudc nam 2005, trong thilt ke cau. Chung ta ap dgng tieu chuan nganh TCN18-79, sau do ap dung tieu chuan mdi 22TCN272-05, L^
thuylt kiem to^n m6ng n6ng tren nln thign nhien tuong doi phdc
tap va phan Idn dua tr§n co sd thuc nghlem. Muon xac djnh mpt dai luong nao do thi phai tra cuu r§t nhieu bang bilu, toan d6[1-4].
Tu lau, van de tu dong hoa kilm toan mong mo dupc d l cap din va da thuc hi#n d mot so noi dung. Tuy nhi§n mdc dp tu dong hoa va do chinh xac chua cao, kho su dung[3-4],
Vi vay, viec phan tich va cu t h i hoa CO sd ly thuylt va xay dung mot phan mem tu dpng hoa kilm toan mong mo nong tren nln thl^n nhien la dilu cin thiet,
2 . CO sd ly thuyet
2.1. Kiem loan on djnh chong lat cua be mong
Z^-^:+Z^A.
Z^
(4)trong do: ee - dp lech tam cua hpp luc; a - chilu dai cua dk mong theo phuong doc cau, e - canh tay don cua luc thing dung P d6l vdl dilm O,; h^- canh tay don cua luc nim ngang T d6i vdl mep dudi cung di mong O^-O^;
2.2.Kiem loan on flmh chong truot Dilu kien kilm toan 6n djnh truot;
fft^Z^r^;(Bleu 10.6.3 3) (5)
a-'g^I^; (6)
Hay ^•igS.Y^P.>Y,rrl-^ (^) tgS = igg) Doi vdi d l mong BTCT Dieu kien kiem toan on dinh jai ch5 tren nen;
lat:
e e < —; Doi vdi nen dat
^ (Oilu 10.6,3,1) (1) ee < - ^ ; D61 vdl nen da (2)
(3)
(8) tg5 = 0,%jgip Dol vdl de mong
BTCT due san; (9) trong d6: cp - goc nol ma sat
cua dat dudi d l mong (do thi nghiem ma c6 duoc <p = 28 - 46°);
T| - cac luc ngang tac dung lam
i 56 8 nam 2012
lii'iiinil
ggggg KHOA HOC - C O N G NGHE
truot de m6ng; P,- cac lyc thang ddng tac dgng xu6ng d^y mong;
iji = 0,80 - h^ so kh^ng truot; Y, -
\\% s6 tai trong(xem bang 2);
2.3. Kiem todn khi nSng chju t i l cua nen dUAl de' mdng
Theo c6ng thdc dilu 10.6.3.1:
•tt-qn ^ qi,(m..,; (10)
trong d6' q^ - sdc khcing dd danh dinh cua nln dit dudi ddy mbng; ^ =0,55 - h0 s6 sdc khdng dung cho thilt k l dja ky thu$t(theo phuong phdp bdn thg-c nghlem dung s6 li^u CPT d6i vdi cdt hodc cuOl s6i. theo phuong phdp bdn tai trpng dli vdl dd); %y^„^^^ - dp lyc tinh todn Idn nhlt dudi ddy mbng do tai trpng TTGH cudng dp gay ra(MPa); dp lyc ndy phdn b6 deu tren dl#n tich ddy mdng hdu hi0u(kich thudc a^ x b^) va phdn bo tuyln tinh tren vung ndy.
khi trpng tam phan kit cau than m6(G1) dat lech tdm so vdi tim d l mong (02) thi d l mong thyc te (kich thudc a * b) se phai dung dl#n tich ^i mong huu hi#u(kich thudc a * b ):
= a-2e^
= b-2e.
(11) (12) a ; b - kich thudc de mbng thyc te;
•JQ • '^0 • ^^^^ thudc d l mbng huu hieu;
e^- dp l?ch tdm song song vdi kich thudc a( Id khoang cdch td Gl den G2)
Bjj- db I0ch tdm song song vdi kich thudc b(thudng thiet ke e^
=0)
P, - cdc Ig-c thang ddng tac dgng xuong day mbng;
; ( 1 3 )
Hinh 2: Sc 36 tinh todn sue chju tai ciia dit nln bSn dudi mbng mfi tr6n nen tu nhien
T - cac lyc ngang tdc dyng ibn kit c l u nhjp, m l try cau vd se truyen xuong d l mbng thyc t l ;
e, - cdnh tay don cua ig'c thdng ddng P^ doi vdi mbp chju n6n xa nhlt cua tilt dl$n de mbng(tryc 01_01);
h,- cdnh tay don cua lyc nim ngang T, d l i vdi mep dudi cung de m6ng(trgc 01_01);
a. Xac djnh q^^__
+Nlu mbng tr§n nen dat: dp lyc dat coi nhu phdn bo deu tren dien tich day mbng hdu hi#u 30*^0- N= (q^ax-^o'-'^o (^^' *''*?"9 ^ phan bo deu tren di^n tich a^^'b^).
Mat khdc. phan lyc dk mbng N bing tong cac lyc thing ddng:
Suy ra: g„„ = - (14) +Nlu mbng tren nln dd: ap lyc d i t coi nhu phdn b l tuyln tinh trin di^n tich ddy mbng hii'u hi§u a/b„: N=0,5,q^„a„ .b„ (tai trpng N phan bo tuyln tinh tren di$n tich a/b^); Mgt khac. phan lyc di mbng N bing t6ng cac li/c thing dung:
Suy ra: q = ^ ' ; a„h„
b. Xdc djnh q
(15)
@in)®iiii®
S6 8 nam 20121KHOAHOC-CONGNGHE ggggk
+ Doi vdl nln dd: Dung phuong phdp thi nghidm nen mau de xdc dinh cudng dp chju nbn mbt truc. vi dgcua da q^ =5,0 MPa;
+ D l i vdl dat nen Id cat, sbi dam chdt. Ta chi nghien cuu vdl cdc loai dat ndy mdi du kha ndng chju tai cua mo cau Sue khdng dd danh djnh cua dat nen Id cat, sbi dam chat tinh theo cdc cbng thdc theo dilu 10.6.3.1 nhu sau:
9,=0,5.g.r.S.C„,W^,„.10-%g.rC,3.D,.N^„,10-' (16) trong do: g - gia tic trong trudng (m/s2); y - dung trpng cua cat hodc soi cuoi(kg/m^); B - chilu rpng de mbng(mm); D, - chieu sdu d l mbng (mm);
C^^- cdc he so tra theo myc nudc nglm D^; C^^, - cdc he so; ^y„,- h^ so sdc khdng do duoc dilu chinh: A^^„, = N^.s^.c^.i^ ; A^^„,- h0 so sue khang dd duoc dieu chinh: A^,,„, = N^.s^.c^^.i^.d^; N^-N^-u^
s6 kha nang chiu tai; Jy , \ - he so hinh dang; c^;
c^ - cac h§ s l bp tun cua dat; '^; i^- cdc he s6 xet dp nghieng cua tai trong, d^~he so do sau quy dmh.
Ddy la cdc so llbu tra bang.
3. SO do khoi ctiirang trinh
(Xem hinh 3)
4. Ngdn nguf va cac cong cu sur dung
Phan mem duoc viet bdng ngon ngu lap trinh Visual Basic theo phuong phap lap trinh hudng dli tup-ng, CO sd du lieu Acces Tac gia phan mim da thilt k l nhilu Icon cua chuong trinh. ngudl dung cb t h i de ddng truy cap nhanh theo Button hay theo Unlmenu dang cdy, dng dyng nhieu phan mem trong cong nghe tao Flash (Sothink SWF Quicker), icon (Icon Cool), dong goi san pham(Portable_Smart_
lnstalLMaker_v5,04), cdc bao cao kit qua dang ban Report tudng minh tren Excel, Word.
5. Md ta chuang trinh
Chuong trinh duoc xdy dung tren co sd 10 ' Modul va form vdl khoang 75 trang ma ngu6n(code)
• vd CO sd du lieu, dung luong thiet k l chuong trinh ' khoang 20MB, file. Exe Id 10Mb. chay trbn may tinh
cb cau hlnh: HHO trong t l i thilu 10Mb vd RAM 515 Mb. cdc loai CHIP vdi bp vl xd li thong thudng. Muc tibu cua chuong trinh la han che t l i da phuong thuc nhap cdc tham so thu cong td ngodi, tang tinh xult vd nhap s l libu vd kit qua tu hinh thuc lien
Kl^m tD^n mCing nflng mA cAu Iheo tJ£u 1 chliin 32TCN 273-Q5 |
1 eat aiu 1
1
1 Nhap air li«u KTHH be mono, '*! "Dng, ait nin j
1
1 Kjimtoaninainhiatl 1 1
1 »-»-'-' »l
1 KimlaankhJ nang cNuI&icJa dii nin
1 Xu*tk*tquir»lll«Txl, &cel|
1 Kttihilc
1
Hinh 3:
NOl dung kilm todn mbng nflng m l c l u
...^..,^„,..:,.^..., , — , - - - - ^fffisa „.
••^—^ ., I ^ " " ^ ^ |™~- i_
[T™—.^ „ [ ™ — _ . | « i — ^
r—« '"^—- . ^—-
p . - ^ ^ - ^ .
l^__r-jfci^-:j>,^lV:^_, Hinh 5: Khai bao kich thudc h m l cau
___
p '\ 1 1• 1 ' - ! • •
; r^ ----^~^. '- \''
'i ' ' • " -
'5:!''
1
nh hoc cua mong
BANG 1.
STT T6n tai trong BO lcm(kN) Ktioang cacti den m6p be m6(m) Th§ng i5Li'ng{Pj
1 2 3 4
P, P, P, P,
1000 1500 2500 3446
1.3 1.3 1.3 0.045 Nam ngang(T,}
5 1 T 1 53451 0.346
sa 8 nSm 2012
r## KHOA HOC - C O N G NGHE
k i t file vdl cdc p h l n m i m Excel.
Midas,vv, t u dpng hba hodn todn thu tuc ldp, t h u d l xdc djnh tham so, t y dpng hoa hodn todn viec tra c d u cdc bang bleu, x u l t k i t qua, p h l n tro giup (Help) cb trinh bdy CO s d ly t h u y l t djnh dang PDF, (xem hinh 4)
Trong c h u o n g trinh, tdc gia dd xdy d y n g r i t n h i l u cbng cy tl^n ich bdng do hoa, gidi thich ro rdng v l thudt todn. s o d l tinh. c o s d d u lieu vd h u d n g d i n s d dgng, N g u d l dung cb t h i tiiy b i l n vi^c truy x u l t CO s d d u l l | u . C h u o n g trinh t y dOng hba vi$c x u l t k i t qua k i l m todn ra file ExI, txt vd d l thi bien thien cdc tham s6, P h l n hien thj dang Menu bar, Menu tree vd c d a so do hpa phong phu, sinh dpng,
6. Thi du tinh toan
B a i l o a n : K i l m todn mbng m l M l tren n l n d i t t y nhien cb cac tham so v l ddt nen n h u sau;
Dung trpng cua ddt ben d u d i ddy m6ng:2400kg/m3; dp am t u o n g d6l(Dr),80%;g6c ma sdt trong cua d i t : 35° dp; c h i l u sdu t d day mbng den m y c ndc n g l m ; gia t i c trpng trudng(g): 9.8m/s2;,20m Cac tham so v l be mbng Id' Chieu cao mbng (D,):1500mm;chilu rbng ba mbng(a),4500mm;chilu ddl b? mbng(b): 8 0 0 0 m m (cdc kich t h u d c khdc xem phan khai bao kich t h u d c hinh hpc mo ben hinh 5)'
Cdc tai trong tdc dgng Ien b$
mbng mo gom (xem bang 1, hlnh 6):
Ket qua k i l m toan + O n d i n h lat (hinh 7):
+ 6 n djnh irwai (hinh 8)
Hinh 8:
Kilm todn 6n 31 nh irvFtyt
-. ' F - — J -
..--.... Sii " : ^
- — " • ' - r
-,- ^ _ _ i
- ,:-....
. _ „ „ . - . ^ _ - , . — - - > , Hinh 9:
Xdc djnh sdc chju tai danh djnh cua dSt nln(q„)
.:- ^ - : _ ^ ^ _._ u j 1
^ ^ — " . _. -J
-•-f\ .1 1
Hlnh 10: KiJm toSn SLTC chiu tai cua aSt n4n ming n6ngmmsi
S6 8 nam 20121KHOA H O C - C O N G NGHE
+Suc Chiu tai cua dit nln:
Ty so TlngTl/Tong Pi(TS3), 0.633 Dien tich d l mbng tilp xuc nen dlt(Adm). 36000mm^
Ap lyc mbng xuong nen dit trudc khi ddo mbng(q). 0.192MPa H$s6(Cw1): 0 5
H# so(Cw2): 0.507 He sb(N^). 49 5
He so kha nang chiu tal(Nq): 33 5
He s6 hinh dang(S^): 0.756 He s6 hinh dang(Sq): 1,7 He so ep ICin cua dat(C^)' 0,27 He so ep lun cua dlt(Cq): 0,27 He s l xet din dp nghieng cua tai trong(i^): 0.322
He so xet din dO nghieng cua tai trong(lq): 0 403
He s6 do sau(dq): 26.23 He so sue khang dd dup'c dieu chinh(N^): 3.252
He s6 kha ndng chju tai(Nqm): 162 4
Sue khdng dd danh dinh cua nen dat(qn) 2.8508MPa Ap luc idn nhlt do tai trong gay ra xuing nln m6ng(q^gj: 0 982MPa
Kit ludn v l sue chiu tai cua nln mbng clu; Dat
7. Ket luan
Phdn mim kilm todn mbng m l nong tren nln tu nhien Id san phdm da duoc hoi dong khoa hpc Vien ky thuat cbng trinh ddc biet nghlem thu vd ddnh gid cao, da bdo cdo duoc ddnh gid cao trong phien bdo cao "Hbi nghj sdng tao khoa hpc lln thd 33". Phln mim ddp ung duoc cdc yeu clu cua mbt san phim tin hoc hodn thien. cb gid tri dng dung cao, cb glao dl$n thdn thi^n, phCi hop vdl ngudl su dung. Dac biet trong khl xdy dyng phln mim, tdc gia da tong hop vd cu t h i hba todn bb noi dung ly thuylt kilm todn mbng mo nong theo 22TCN 272-05 Tdi lieu ndy cb the phgc vg cho cong tdc giang day, nghien cdu va ung dung rong rai cho mpi don v|, cd nhan •
TAI L I E U THAM K H A O
1 M 6 tru c l u , NguySn Minh NghTa, Ducng Minh Thu, NXB GTVT Ha Npi 2008.
2. Nhij'ng van de chung va mo try cau, Nguyen Nhu" Khai-Pham Duy H6a, Nguyen Minh Hung, NXB Xay Di/ng 2008
3. Bridge Engineering construction and Maintenance.Wal -Fah Chen Lian Duan. CRC Press.2007.
1 rionoB, B.M. ropoflCKMe rpaHcnopTHbie coopyweHMs/ B.M. nonoe - M MAflM (ITy), 2007.-352 c.
I S6 8 nam 2012
