'"^"^ Vien Khoa hoc ua Cong nghe Giao thong van tai
Nghien CLTU chpn dang tdng the va xac dinh cac thong so ca ban cua thiet bi thi cong coc vft trong xay dung cong trinh giao thong do thj 6 Viet Nam
• P G 5 . T S . N G U Y i N X U A N K H A N G ; ThS. N G U Y E N CHI M I N H - Vien Khoa hoc vd Cong nghe Giao thdng vdn tdi
T O M T A T : Thiet bi thi c o n g coc vit la t o h a p g d m may CO sd, thiet bi xoay ha CQC, b o n g u o n thuy i\ic.
can cau p h u c vy va cac thiet b| p h u tro Tren c o s6 khao sat nhCing t h i e t bi thi c o n g coc vit hien c o tren the gidl, cac fac gia d a phan fich va lya c h o n thiet bj xoay ha coc ISp tren may c o sd co s i n la may xuc thiiy luc banh xich d l tgo t h a n h fhiet bi d d n g bo thi c o n g coc vit p h u h o p vdi frinh tJd c o n g n g h ? che tao c u n g n h u k h i n a n g c u n g cap vgt t u p h u f i i n g d trong nuoc, d o n g t h o i d a p dng dugc cac yeu cau CUB qui tnnh c o n g nghe thi c o n g m o n g coc tai cac cong trinh giao t h o n g d o th| nudc ta Bai bao t n n h bay t o r n tat ket qua nghien ci/u c h o n dang t o n g t h e va xac d i n h cac t h o n g so c o ban cua thiet b| thl c o n g cpe vit t r o n g xay d u n g c o n g frinh giao f h o n g d o thf 6 Vief N a m
T a K H O A : Coc luc banh xich, di
. fhiet bl thl cong, may i u c thuy xoay thuy luc
A B S T R A C T : Screw-pile e q u i p m e n t for c o n s f r u c f i o n is a c o m b i n a t i o n of the base m a c h i n e with r o t a t i n g e q u i p m e n t , hydraulic power pack, crane services a n d auxiliary e q u i p m e n t Based on surveys of screw-piles c o n s t r u c t i o n e q u i p m e n t available in the world, the authors have analyzed and selected fhe r o t a t i n g e q u i p m e n t , which is available installation on the basic one such as f h e hydraulic crawler excavator fo create fhe screw- pile e q u i p m e n t This e q u i p m e n t is suitable with local m a n u f a c t u r i n g t e c h n o l o g y a n d supplies ability of materials a n d spare parts in the country a n d m e e t s the r e q u i r e m e n t of c o n s t r u c t i o n standard of pile f o u n d a t i o n c o n s t r u c t i o n work of urban t r a n s p o r t a t i o n projects in our country This article presents a s u m m a r y of fhe study for selection of overall f o r m and d e t e r m i n a t i o n of basic specifications of screw-pile e q u i p m e n t in c o n s t r u c t i o n of urban infrastructure transportation in V i e t n a m
K E Y W O R D S : Screw pile, construction e q u i p m e n t , hydraulic cravvler excavator, auger drive
1 . DAT V A N oi
C u n g v d l sU p h a t t r i e n cua nen kinh te q u d c d a n , n h U n g n a m g a n day, n h u c l u xay d u n g ha t a n g GTVT n g l y cSng t a n g Tmh t r a n g ach t i c giao t h d n g tai cac
t h a n h p h d i d n t r o n g t h d i g i a n vUa q u a d o sU b i i n g n d cac p h u o n g t i e n g i a o t h d n g da d a t ra c h o n g a n h GTVT c l n phai d a u t u p h a t t r i e n he t h o n g g i a o t h d n g d d t h i n h u c l u v u o t , d u d n g s i t d d t h i , d u d n g t r e n e a o . , d e giai q u y f t t i n h t r a n g nay.
C I c c d n g t r i n h t h i e o n g t r o n g t h a n h p h d cd dac d i e m c h u n g ia dien t i c h m a t b l n g t h i c d n g chat h e p , y e u cau cao t r o n g viec d a m b a o giao t h d n g , an t o a n lao d p n g , x d ly c h d n g o n , c h d n g r u n g d d n g , van c h u y e n d a t t h l i xay d u n g . . , n h l t la t r o n g giai d o a n t h i e d n g p h l n m d n g t r u cua cae c o n g t r i n h d o t h i , N h a m g t l i q u y f t n h U n g van d e t r e n , c o n g n g h e coe v i t ra ddt Coc v i t la ioat coc d n g t h e p cd b d t r i c a n h t h e p d m u i coc va ha b l n g p h u o n g p h a p xoay.
Hinh 1.1. Thi cong coc vit tai cong trinh giao thdng do thi (trii) va tmh hinh ung dung coc vit dNhat Bin Cdng n g h e coc vit d u o c sU d u n g r d n g rat a cac nudc BIc Mi t u n a m 1980 Tat chau A, Nhat Ban I I nUdc d a u tien u n g d u n g cdng n g h e coe vit o n g t h e p t r o n g t h i c d n g m d n g c h o cac c d n g t r i n h , dac btet 11 cac e d n g t r i n h ha tang d o tht, d d n g t h d i c u n g la nuoc di d a u t r o n g viec n g h i e n c d u phat tnen (R&D) c d n g nghe nay t r o n g t h o i gtan g a n day Theo m d t n g h i e n cUu nam 2015 ciJa hang JFE Steel Corporation, eong n g h e coc vit d n g t h e p d u o c s U d u n g tai Nhat Ban t u n a m 1999 va t i n h d e n nam 2014 da cd t d n g sd 707 c d n g t n n h xay dUng n h u m d n g m d t r u c l u , dUdng SSt tren cao, nha d t r u o n g hoc, b e n h vien, nha xUdng. eau vuot, cau can, m d n g cho cac d u d n g t a u . , , s u d u n g m d n g coc vit VOI t d n g khoi l u o n g coc k h o a n g 131 900 tan, t r o n g d o ehu yeu la coc co d u o n g kinh £ 6 0 0 m m f d u d n g kinh canh Vlt £ 900mm) chiem 91 %.
D e t h l c d n g coc vit can phat cd e l c thtet bi ehuyen d u n g d a p u n g yeu cau cua c d n g nghe. Tren t h f giot t h i e t bl thl c o n g coc vit ndi c h u n g d u o c cac h a n g c h f t a o vdt nhieu c h i i n g loai co t i n h n a n g ky t h u a t va mUc d o hien dai khac nhau, d a p u n g d u o c mot yeu cau t r o n g t h i c d n g m o n g coc vit cho cac c d n g trinh Tuy nhien, gta t h a n h nhap khau he t h o n g thiet bi nay la rat eao, k h d n g p h u
95
KHOA H O C - C 6 N G NGHE
hop vdl kha nang tai chinh cua cac nha thau. Theo quan difm phat huy noi iue, vdi sUquan tam cua Bd GTVT, theo nhtem vu nghien cUu khoa hoc cdng nghe giat doan 2015 - 2016, Vien Khoa hoc v l Cong nghe GTVT ehij tri thiJc hien Df t l i "Nghien cUu ddy chuyen thiet bj thi cong coc vit trong xdy dung cong tnnh giao thdng do thi d Viet Nam".
ma sd DT 154055, muc tieu la lam chu cdng nghe thiet ke thtet bi tht edng coc vtt iap tren may co sd cd sin, phu hop vOi trlnh dd cdng nghe ehe tao citng nhU kha nang eung cap vat tu phu tung d trong nude, dap Ung dupe cac yeu cau qui trinh tht edng coc vit tai elc cdng trinh giao thdng dd thi d nude ta, ddng thdt gtup eho eac nha thiu gilm kinh phi dau tU cac thtet bi cdng nghe ma van cd duoc thtet bt ddng bd thi cdng coe vft can thift
2. TdNG QUAN V^ CONG NGHl VA DAY CHUYEN THI^T Bj THI CONG CQC VfT
2.1.Tdngqiian vecoc vit va cong nghe thi cong coc vit
Cdng nghe eoc vi't hay cdn dupe got la coc xoan dc hole vi't neo fserew-ptles, spiral-piles, helical-piles) sU dung eoc dng thep tren dd g i n eac eanh dang xoln dc, dupe xuyen sau xudng nen dat tao thanh ket clu mdng de truyen tit trong cdng trinh xudng nen dat hoac neo giUcdng trinh vdi dat nfn.
Theo kieh thudc true (dudng kinh dng thep), ngudt ta phln ra cac loat eoc vit: Loai truc Idn (dudng ki'nh Dp >
600mm), loat triJc trung binh (dudng kinh Dp tU 300mm den 600mm) va loai truc nhd (dudng kinh Dp < 300mm).
Theo each bd tri canh vit, ngudi ta phln ra elc ioat epc vft: Canh vit lien tuc, bao gdm mpt canh xoln hen tuc gin theo suot chifu dit true. Nhieu canh vit (nhteu tang eanh): Gdm nhieu dia xoln rdi rac gin lien vdt mdt truc trung tam, cac dia xoln ed the ed dudng kfnh blng nhau hoac cd dudng kfnh gilm dan vf phia mui coe; mdt e^nh vit (mdt tang canh): Chi cd mdt eanh dang xoln dUpc hin d mui eoc, einh vit ed the kin (khdng cd 16 d tam) hoae hd (cold dtam).
I Z-DP... "
: i ^ » ^ 1 ^ — ^ M ^ ^ ^ ^ Hinh 2.1 • Cic kich thuoe cua cac vit (Uai). coc vit mdt tang cinh
kieu h&(giua) vi kieu kin Coc loat canh vit lien tuc va loat nhteu ting canh thuong duoc st^ dung df neo giUcac cau kien cdng trinh vao dat nen hoac neo giU chong sut truot cho cac mai ta-luy Coc vit loai mot ting cinh thudng duoc sir dung Iam mdng eoc cho eac cdng trinh xay dUng, giao thdnq edng nghiep
Do dac dtem cac cdng trinh giao thong do tht ed mat do phuong tien qua lai cao, tit trong nhd, do dd tren the giot thudng sUdung loat coc vit cd dudng kfnh trung bmh mot tang eanh de thi cdng mdng coc cho cae edng tnnh nhu cau vuot do thi, cau vuot bd hlnh, dudng sit do thl, cac tuyfn metro tren mat duong dang khai thac chat hep CO luu luong giao thdng Idn Chinh vl vay, theo 96
ndi dung nghien edu, de tit chi tap trung vao epc vit loai mpt tang canh cd dudng kinh coe Dp£ 600mm, dUdng kfnh eanh vlt Dwf 900mm.
Kich thudc tuong quan gtda dUdng kfnh true trung tam (Dp) v l dudng kinh canh vit (Dw), chi^u d^y canh vit (tw) cua loai eoe vit mpt tang canh tiiy thude vao thi^t kf coc eho tUng edng trinh. Tuy nhten, ed the tham khio tieu chuan coe vft cua hang Nippon Steel Corporation, hang JFE Steel Corporation va hang Asahi Kasei (Nh^t Bin) hoae eOa hang Almita Pilling Ine (Canada).
Ve cdng ngh& thi edng eoc vit trong xay dUng mdng cdng trinh not chung la st:f dung thiet bj ehuyfn dCing de xoay v l an de ha cpe vft xuyen vao dat nen. Nhd trpng lucing ban than ket hop vdi lUe gn ciia thift bi v l gdc xoan eua eanh vit m l cpe di vao nfn dSt vdi ehieu sau theo yeu elu. Hien nay, tren the gidt ed the ehia ra hai loai edng nghe thi edng epc vit theo kfch thUde eoc nhir sau: Cdng nghe 6m xoay dau coc dot vdi cpe cd dudng kinh tfung binh va nhd Dp£ 600mm; cdng nghe dm xoay thin coc ddi vdi coc cd dudng kfnh Idn Dp>600mm,
Hinh 2.2: Mo hlnh cdng nghi xoay ha coc vit (trii), cdng ngh0 Sm xoay dSu cgc (giua) vi cong nghi dm xoay thin cgc 2.2. Tong quan v l day chuyin thtet bi thi cdng coc vit
Tuy theo tinh ehat edng trinh, dieu kten dla chat v^
edn^g nghe thi cdng ma ngUdi ta stir dung day ehuyen thiet bi tht cong phu hpp.
Trong edng nghe thi cdng dm xoay thin cpe, dly chuyen thiet bj II to hop gdm may chinh la bd kep xoay thity lue (casing rotator) de kep chat xoay va an ha epc.
Bd nguon thijy luc (hydraulic power pack) di kem d^
cung cap va difu khten ddng dau thuy lUc dan dong bd kep. Can true blnh xfch (crawler crane) t i i trong 80-15of de phuc vu viec Ilp dat eoc vio bd kep v l neo giiJ cung nhudich chuyen b6 kep vao vi tri thi edng.
aa"- •-_^' """""
Hinh 2.3: DSy chuyen thiit bi thi cdng coc vlt theo cdng nghi 6m xoay thin cpe
Dien hinh cho thift bi kifu nay cd thf ke tdi hano LeffereuaDUcda chetao eac thiet bi vdt moldelRDMlOOO RDM1500, RDM2000 va RDIW3000 hoic hang Nippon- Sharyo cua Nh|t Bin da ehe tao va dua ra thi trudnq cic thift bl thl edng coc vit model NISSHA RT-150A2 RT
.
iirtr Aqrouaudii
hge va Cong nghe Giao thong van tai
0 0 A 3 va RT-260H Co m o - m e n xoay tcfi 2 0 0 0 k N . m d i k e m 0 0 n g u o n t h u y luc c o n g suat t d i 3 0 0 k W c h u y e n d u n g d e
rang coc Vlt CO d u d n g k i n h D p tir 8 0 0 - 1 6 0 0 m m . T r o n g c o n g n g h e t h i c d n g 6 m xoay d a u coc, day c h u y e n thie't bi la t o h o p g o m m,Sy c h i n h (base m a c h i n e ! 1 t h u o n g la m d t m a y c o s d d i c h u y e n b a n h xich kieu c o t b u o m d a n d d n g t h u y luc, t r e n c d g a n d a u xoay t h l i y luc lauger d n v e ) 4 c h u y e n d d n g l e n / x u d n g t h e d cdt d a n h u d n g 3 cd t h e t h a y d d i d i / o c gdc n g h i e n g t h d n g q u a Xi-lanh t h l i y luc 2 d e t h i c d n g cac coc x i e n . M o t can t r u c hojic xe n a n g p h u c v u viec cau lap coc v i t v a o m a y c h l n h (ket h o p v d i tdf c a p 6).
Hnh 2.4: Dii, chaySn thigt bithi c6ng eac uit then cdng nghe dm xoay dSa coc
Trong q u a t r l n h t h i c d n g coc vit, d a u xoay t h u y luc (duoc d a n d d n g b d i n g u o n t h u y luc cua may chinh) c h u p len d a u coc va t r u y e n m d - m e n q u a y c h o coc vi't 5 lam cho coc d i vao ni=n d a t . Viec d a n d d n g d a u xoay d i chuyen len x u d n g t r e n cdt d a n h i f d n g n h d c o ca'u t r u y e n d d n g t h a n h r a n g - b a n h r a n g (banh r a n g gSn t r e n d a u xoay d u q c d a n d d n g b a n g m d - t o t h i j y luc an k h d p vdi t h a n h rang g ^ n cd d i n h t r e n c d t d a n h u d n g ) .
B i e n h i n h c h o t h i e t bi kieu nay cd t h e k|S t d i h a n g Nippon-Sharyo da che t a o va dua ra t h i t r u d n g cac t h i e t bj t h i c d n g coc v i t m o d e l Nissha DHJ-15, DHJ-25 va DHJ- 45. CiSc t h i e t bi m o d e l EAZET-L, EAZET-M, EAZET-S ciia hang Asahi Kasei (Nhat Ban) v d i cac t i n h n a n g ky t h u a t khac n h a u p h u h o p c h o t h i c o n g loai coc vft cd d u d n g kmh D p £ 6 0 0 m m , c h i e u dai p h a n d o a n coc cd t h e t h l cdng t d l 9 m v d i m d - m e n t d i I SOkN.m.
Hlnh ^,5. Thret tyi thi cong cac vit theo cang nghe dm xoay dsu coc lip trin miy car sd CO sin ii din bda doog cac trinb xich (trir)
I/i miy xiic thuy iuc binh xich He t h d n g t h i e t bl t h i c d n g coc vit t h e o c o n g n g h e d m xoay d a u coc g d m t h i e t bi xoay ha coc vit ia cac d a u xoay t h u y luc n e n g 1^ d u o c i^p tren may co sd co san M^y c d sd t h u d n g sir d u n g d a n bua d o n g coc t h u y luc b ^ n h xich hoac ta may xuc t h u y luc b a n h xich co san Trong qua t r l n h th) c d n g , d a u xoay d u o c d a n d o n g b d i n g u d n t h u y luc trich ra t u may c o sd se c h u p ien d a u coc va t r u y e n m d - m e n quay cho coc vft de coc x u y e n vao dat n e n .
Vdi m a y c d sd la d a n bua d d n g coc b a n h xich t h l d a u xoay t h u y luc nay d u o c lap t h e m m a trUcrt d e t r u o t t r t j n hai t h a n h d a n h u d n g t r e n gia b u a , viec n a n g ha d a u xoay t h d n g q u a t d i cap n a n g ha q u a b u a . Vdi m a y c d s o la m a y xuc t h u y luc b a n h xfch, d a u xoay t h u y luc d u o c B p v d i tay g a u m a y xuc t h d n g qua cac tai c h d t lap g a u T r o n g qua t r i n h xoay coc, n h d t r o n g li/i?ng b a n t h a n cua b d p h a n d a u xoay va gdc x o a n ciia c a n h v i t ket h o p v d i luc an ciia x i - l a n h d i e u k h i e n g a u m a coc di vao n e n d a t H a n g A l m i t a Pilling Inc. (Canada) da che t a o ra m d t loat cac d a u xoay t h i f y lac v d l m d - m e n x o a n t d l SOkN.m g a n t r e n cac m a y xuc t h i t y luc t i t 20T d e n 56T t a o t h a n h t h i e t b l t h l c d n g cac coc vft c d n h d va t r u n g b i n h v d i ti'nh c d d d n g c a d rat l i n h h o a t t r o n g t h i c d n g d cac vi t r i chat h e p , k h d n g b a n g phang...
3. LLto CHON T H l f r Bl THI C 6 N G COC VfTTTONG XAY DLTNG CONG TUlNH GIAOTHONG D O THI d V i e r N A M
Qua n g h i e n c i f u t d n g q u a n v e day c h u y e n t h i e t b i t h l c d n g coc vit t r e n t h e g l d i , sau khi p h a n t i c h u u , n h u o c d i e m ciia cac c h i i n g loai t h i e t bi t h i c d n g cdc vi't kieu d m xoay t h a n coc; kieu d m x d a y d a u cdc d d n g b d c h u y e n d i i n g va kieu d m xoay d a u coc lap t r i l n m a y c o sd cd s i n , tac gicS n h a n t h a y , Thiet bl t h l c d n g coc v i t kieu d m xoay d a u coc lap tren may c o sd cd sJn c d dac d i e m : Cd ke't c a u g o n , c d t h e t h i c d n g d d i a b a n c h a t h e p , t i n h c d d d n g cao, d e d a n g d i e u c h i n h khl t h l c d n g , gia t h a n h t h i e t bl t h a p . Dac biet, vdi t h i e t bi lap tren may c d sd la miiy x i i c t h u y luc b a n h xich rat l i n h hoat t r o n g van h a n h , cd t h e t h l c d n g tai n h i e u dia h i n h khac n h a u , cd t h e t u ISp t i i p va d i c h u y e n coc vao vi tn', k h d n g can thie't bi h o t r g l i p d a t coc vao may chfnh, d o vay dien ti'ch m a t bSng c h i e m c h d khl t h l c d n g ra't n h d D i e u nay rat p h i i h o p t r o n g viec t h l c d n g tai cac d d t h i
Tai Viet N a m , n a m 2015, Tap d d a n N i p p o n Steel S, S u m i t o m o M e t a l (Nhat Ban) c i i n g Tdng c d n g t y T h a n g Long da ky t h o a t h u a n c h u y e n giao c d n g n g h e coc vit NS-ECO va t n e n khai irng d u n g vao t h i c i j n g m d n g c h o c o n g t r m h cau v u o t d d t h i H o a n g M m h Giam - N g u y e n Chanh (Ha Ndi). Tai c o n g t r i n h nay da tie'n h a n h t h i c d n g 34 coc Vlt c h o 2 m d 4 t r u , d u d n g kinh coc D p = 6 0 0 m m d u o c h a n m o t canh xoan d u o n g kfnh D w = 9 0 0 m m d m u i coc - loai coc vit m d t t a n g canh Toim b d sd coc t r e n d u o c t h l c o n g bSng thie't bi chuyen d i m g ciia h a n g N i p p o n - Sharyo (Nhat Ban! che tao dua truc t i e p t i f Nhat Ban t d l d u o i d a n g t a m n h a p tai xua't c i i n g c h u y e n gia va t h o van hanh t h i e t bl c u n g d o phfa d d l tiic N h a t B i n c i i sang
Hinh 3 I Hd hinb tbiet bl tbi cong
coc vit de til iaa Chan tbiet ke
97
KHOA H O C - C O N G NGHC
Can cU vao cac yeu elu cu the cua cong nghe thi cdng mong coe vit va dac dtem xay dUng edng trinh giao thdng dd tht d nudc ta, tren co sd vtec nghien cuU phln tich danh gia Uu, nhupc difm cua thiet bt tht edng coc Vlt hien nay tren the gtdi eung nhu 6 trong nude nhU da neu, tan dung tot da ttf m nang sin cd de gilm gia thanh, dap Ung duoc yeu clu eiia cdng vtec thi cdng mdng cpe vit trong xay dung cdng trinh gtao thdng dd thi, cac tac gtl iUa chon phuong an thift ke thiet bt thi cdng coc vit kifu chup xoay dau eoc lap tren may eo sd ed sin la may xiic thity lUc blnh xich. Dly la loai may cOsd rat pho bifn dcacdonvi tht cdng cung nhutai cae don vikinh doanh nhap khau may xay dUng. IV16 hinh thift bt tht cdng eoe vitlUa chpn thiet ke dupe trinh bay nhutren Wirv/ii 1.
4. NGHI£N Cd'u CAC THdNG Sd CO BAN CUA THI^T B! THI CONG CQC VfT LAP TREN M AY XUC THUY LI/CBANHXfCH
Cac thdng so ca bin cua thtet bt thi cdng eoe vit Ilp tren miy xuc thiiy luc bao gom: M6-men quay, tde dd quay, edng suit, ap suat v l luu Iuong thuy luc dan ddng mo-to dau xoay. Df tt'nh toln xac dinh elc thdng sd tren cua thift bt, ta can cle thdng sd d i u vao sau d l y
Cdc thdng so vecoc gom:
-Dudng kinh than eoe: D = 600mm;
- Oudng kinh eanh vit {dudng kfnh mep ngoai): D_^
= 900mm,
- Chifu day canh vit: t =50mm;
-Chifu day thin coe. t -16mm:
- Budc Vlt: p = 0,3.D^ ='l80mm;
- Gdc nghieng (gde nang) eua canh vit xoan;
-Chieusau eoc.L = 30m.
Sau kht tinh toan, nhdm nghten cdu cd duoc cle thdng so ca bin ciia thiet bi nhusau-
- Md-men quay M^^ = SOkN.m;
-Tdc dd quay Idn nhat' n = 29,33v6ng/phut;
- Ap suat thiiy luc lam vtec dtnh mUe p_,^ = 30iVlPa;
- Luu tuong thiiy luc tdt da: 203 lit/phutr -Cdng suat:N= lOOkW.
5. TlNH TOAN LLTA CHON LOAI M A Y XUC L A M
MAYCCf
Nhu da phan tich, df tai ehon thtet kf thift bi tht cong coc vit Ilp tren may co sd II may xiJc thiiy lUc banh xich Vdl cac thong sd co ban cua thift bi xoay ha coe nhu tinh toan d tren, eac tae gta da tifn hanh tinh toln v l lua chon duoc cac may xuc thity lUc banh xich iam miy cosd cho thiet bl phai thda man cac dtfu kien sau:
- Chifu eao muc, tam vdi cua tay gau (J)- J ^ 7,2m;
-Dung tich gau (V),V> 1,4 m^;
- Luu luong dau thuy luc cua bom chinh (Q ) Q > Q
= 203 lit/phut: ' ' "
- Ap suat dau thuy luc cua he thdng (p ), p^ > 30 Mpa,
Bang 5.1. Mdt sSloai miy xOc cua hang Komatsu lim miy ay s&
cho thiit bi thi edng coc vi
Nhan hi«u may Cong suai (kW)
I6,fl;,lm'1 dinh muc ciishS (MF^I Lini l i m g tSi 6s (1 I f o h ml MnM^'i^^""'
l*C 300-7 ISO
,,„
1,6
=,,.
S3 5
iO.S
sr:
187
,,«
t l
»,.
S3,
" •
I.C3S0 IW ,.,=1
M
„.
S,3
3 i 3 PC400-B
257 :o,3i
IJ
37..
e . 41,7
PC 450 246 lows
2 1
37.8
690
flS
Can eUvao eae dteu kten tren ta cd thf chon dUoc loat may xue dao thuy liJe blnh xich cu the llm miy eo sd eho thift bt thi edng cpe vit ma de tat lua ehon. Til do. nhdm nghien cdu da tifn hanh khio sat v l thdng ke thdng sd ky thuat mpt sd loat may xuc hten co phd bifn d nudc ta phu hop lam miy co sd duoc neu trong Bdng 5.1 va Bdng 5 2.
Bing 5.2. Mot so laai miy xue eda hang Daewoo lim miy cosd cho thiet bi thi cong epe vit
Nhantil»uiticiy
C6r,gsi,a.(kW)
toi Ha (m) D j n g mY, g ^ j 161
lliong thiJy l^ic LiAj iL/mg loi da
Trong It/mig vSn hand (Tan)
Daewoo J30 LCV 183 ,ao, 1,6
=«,
33,18 Daewoo J40LCV 184
10,,.
1,3
3 , .
13,.
Daewoo 370 LCV 200
, 0 =
...
3 »
,.,.
Daewoo
210
, 0 3 .
...
...
.1,2 Daewoo
232
10,,
2,1
, 1 ,
.,
Tren eac loai may xiie nhu da thdng ke tren day deu cd dudng dau thuy iUc chd sin tren tay gau de ket nfli va cung cap ddng dau thuy luc eho thift bj phu tro nhU bua phi, kim elt, ngam kep,., Difu nay gtup cho viee Ilp dat va ket not he thong thdy lije ciia thtet bj xoay ha coc vit vdl he thdng thuy luc tren miy co sd nhu tren duoc de dang, thuin tien va don giln nhat blng cleh dau noi true ttep dUdng d i u vao/ra md-to thuy luc d i n ddng diu xoay vdt dudng dau chd sau khi da Ilp them cSc van an toan rteng cho md-to thity lue dan ddng dau xoay do vay khdng phli can thiep vao may co sd.
Hten nay d nUdc ta co rat nhieu chimg loat may xue dao thity lUc tao cac dan vi thi eong xay Ilp cung nhutai cac don vi kmh doanh may xay dung, tuy nbi§n ehif m sd luong Idn van la may ciia hang Komatsu Qua kft qua khao sat cita nhdm nghten cuu, do tinh pho bifn v l de ding thu^/mua. vi vay Oe tai chon loai miy xiic dao thuy lUc cu thf cua hang Komatsu vdi dtfn hinh II may PC300-7 de thiet ke, Ilp dat thie't fai xoay ha coc vit.
Thiet k^Idp ddt thiet bi xoay ha coc vit vdo mdy cosd
60 nam Vien Khoa hoc va Cong nghe Giao thong van tai
Hinb s.i: Haiphong boat ddng cda be truyen dong diuyiuc long the diiet bi xoay ba coc vit bing phin mem Automation Khl lap dat bo thiet bl xoay ha coc vit, ta thao bo gau xijc diem lap bo cong tac vao diing vi tri tai chot lap gau sau do ket noi he thong thuy luc cua bg cong tac xoay ha coc vit vao he thdng thuy luc cua may xuc thong gua dudng dau chd sJn tren tay gau (dudng dau thiiy luc de ket noi vdi thiet bi phu tro).
Can cd vao so do he truyen ddng thuy luc tren may xuc CO sd PC300-7, tac gd da xay dung so do he truyen dong thuy luc tdng the thiet bi xoay ha coc vi't tren phan mem Automation va tien hanh chay mo phdng he thuv
\dc (Hinh 5.1).
Dua vao cac ket gua tinh toan thdng so co ban va md phong nhutren, nhom nghien cdu da thiet ke hoan thien duoc thiet bl thl cong coc vit lap tren may xuc thuv IUCPC300-7.
So 8/2016
Tai lieu tham khao
[1], Hoang Thach (2015). Ky thda thudn chuyen giao cong nghe coc vitNS - ECO.Tap cht GTVT, sd thang 3,
[2]. lehikawa Kazuomi, Kono Kenji {March 2014).
Bearing Capacity and Driving Efficiency of Ecological Screw Pile: "Tsubasa Pile''-'". JFE technical report. No 19,
[3] JFE steel comporation (20'^ June 2014). Steel Pipe Pile Methods with Large Pile Capacity.
[A]. JFE steel comporation, Tsubasa (Wing) pile^' (Civil Engineering Edition) Rotary Penetration Steel Pipe Pile with Toe Wing.
[5]. Kasuga Masamt, Hashimoto Osami, Nakamura Nobuyuki {March 2004), Construction Material Technology Supporting Social Infrastructure. JFEtechnicai report. No.2.
[6]. Nippon Steel Comporation (3/2011). Cdng nghe mdng coc - Phuang phdp coc vft. Hdi thao Cdng nghe xay dung va vat lieu mdt, TR Hd Chi Mmh,
Ngay nhSn bai: 11/7/2016 Ngay chap nhan tfang; 20/7/2016 Ngirtrt ph^n bien: TS. Le Quy Thiiy
T5. Nguyen Vin Thinh
6.KITLUAN
SU dung eoc vit ioat mpt tang eanh cd dudng kinh coe Dp£ 600mm, dudng kinh canh vit Dwf 900mm de thi cdng mdng coc trong eac cdng trinh gtao thdng do thi da va dang duoc the gtdi ap dung rdng rai do cdng nghe nay cd eac Uu dtem ndi trdi ban so vdi cac cdng nghf thl cdng coc khac nhu khdng gay rung ddng, it gay on; khdng tao ra chat thai trong qua trinh Ihi cdng, khdng gay d nhtem di't; mat blng chtem chd khi tht cdng nhd; sUc khang mui coc cao; cd kha nang chiu nhd tdt; thl cdng nhanh, ed kha nang thao dd de tai sU dung;
chiu duoe tai trong ngay sau khi thi cong xong, khdng cln thdt gtan chd; gia thanh thap.
TU nhung yeu clu cua cdng nghe thi cdng mdng coc vit tai eac cdng trinh giao thdng do thi, cac tieu chuan ky thuat hien hanh, tren co sd phan tich cac thtet bl thl cdng hten nay tren the gioi, cac tac gta da de xuat tUa ehon thtet bi thi cdng coc vit kieu chup xoay dau coc Ilp tren may eo sd cd sSn la may xiic thuy luc banh xich lam thiet bi thi edng coc vit ddng bo phuc vu thi cdng mdng eoc cho cac cdng trinh giao thong dd thi dViet Nam, phu hop vdt dieu kten thuc te thi cdng hien nay ddng thdi tinh toan cac Ihdng sd co ban ciia thiet bi vdi tt'nh nang ky thuat phit hop, tu dd lam co so cho viec thiet ke hoan ehinh va che tao thiet bi d trong nuoc J
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