Nhu vay chung ta dang thieu ede van ban phap quy quy djnh rd phuong phdp, cdng nghe thi cong cdng trinh nglm trong dd thj dam bao cdc tieu chi md Nghi djnh 39 dua ra nhu Bdo ddm an to[r]
(1)C C ( S K Y T H U A T H A T A N G • NANG LUONG • Mdi TRl/dNG
PHaONG PHAP SUISHIN THI CONG CONG TRINH
N G A M
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V A N D E
CONG TRINH NGAM TRONG
LUAT
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P G S T S L l / U OOfC H A I - R vien triJang thUcing tri/c, Vien Nghien curu DT va PTHT K A Z U N A R I Y A S U D A - GO C.ty Ky thuat Yasuda, Nhat Ban
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Trong cuoc song hien noy, ddc bietlo tgi cdc khu vuc thj khong the thieu duoc nhung he thong ho tro cho doi song nhu:
dudng ong cop nuoc, duong cong thodt i nudc, dudng ong cap go, cop dien vd cdc phuong
tien truyen thong thong tin Hau het cdc duon^ day, dudng ong deu duoc chop dudi mat dot ben cdc dudng ong dan ngam Co hoi phuong phdp chon cdc ong dan ngdm, Id: phuong phdp ddo - lap: tuc Id ddo mat ddt len, chon ong ngam xuong foi lap Igj; phuong phdp khong ddo: khong ddo mat dot len md se khoan Idng dot
Phuong phdp khong ddo cd hoi loqi chinh dd Id: - Phuong phdp SHIELD: dung mdy de ddo dot sou dd se xdy dung tung doqn mot d hdm vd ' thi cdng phu be mat cuo dudng hdm •
^ - Phuong phdp SUISHIN (phuong phdp day): day cdc dng dan ngdm dd dupe chuan hi trudc vdo Idng dot., , ,
Trong bdi viet ndy chung toi chi de cap den phuong phdp thi cdng SUISHIN, Id phuong phdp cd nhieu uu diem vugt trgi vd thich hgp cho viec thi cong cdc dudng dng dan ngdm
IVIot dt/an thi cong cong trinh ngam bang phddng phap day SUISHIN tai Nhat Ban
Ojnh nghTa p h u o n g phap thi cong SUISHIN - Phuong phap da'y:
Thi cdng bdng phuong phap day Id phuong phap ehdn dng trdn bode dng h'lnh chO nhat xuing jdng dlt Phuong phap chon dupe tiln hdnh bdng each tao hai Id ngang rdi dao dudng nglm tUddu np sang d i u Ngudi ta gpi phia bat d i u dudng h i m Id h i ddng khdi hdnh, va phia cdn lai Id hd dUng diem d i n cull cijng Ddt may ddo (mdy ddo dudng hdm) xudng Idng ddt tu h i dUng khdi hdnh, sau dd ddng thdi van hdnh mdy ddo dudng h i m vd day may ndy vdo trong Idng d l t bdng pittdng dp luc d i u da dupe Idp ddt phia sau cua mdy Pittdng dp luc ddu se day I n g ddn vdo Idng d l t vd tiln hdnh ndi lien tuc dng ddn dd vdo khodng trdng md dupe tao pittdng dp lue d i u rut lai
Nguyen ly hoat dong cua p h u o n g phap SUISHIN:
Ddo h i ddng khdi hdnh vd hd dung diem d i n culi ciJng d hai d i u eua dudng dng ngdm c i n Idp ddt
- Sd dung pittdng dp luc ddu de day may ddo tU h i ddng khdi hdnh (da dupe Idp ddt d l y du ede thilt bj day) xuyen Idng dlt
l i p dJM ing diy ti£p theo dfiy iMavaav Semi-Shield I
Hint! 1: Sd khai quit phUdng phap day SUISHIN - L l n lupt ndi them eac doan dng nglm vdo tilp sau cua mdy dao
Tilp tue day hang I n g nglm dd bdng may pit-tdng ep d i u eho tdi mdy dao tdi dupe h i ddng diem d i n culi cung
Tdm lai, phuong phap SUISHIN la phuong phdp Idp dat dudng I n g nglm thdng ^iOa hai hd ddng khdi hdnh vd h i ddng diem d i n eudi ciinq
Thi cong bdng phuong phap day SUISHIN: Thi cdng bdng phuong phdp day SUISHIN bao N G U d l XAY DONG SO T H A N G - 1
(2)PHUONG PHAP SUISHIN THI CONG CONG TRJNH NGAW
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Hinh : Lap dat may dao
gdm 10 budc CO ban nhu sau:
1 Dao hd ddng khdi hanh: tao Id ngang eua hd dUng phu hpp vdi dudng kinh ong d i n
2 Lip dat may dao: l i p dat eac thilt bi c i n thilt trudc, sau dd dua may dao xudng h i dUng
3 Bit dau quy trinh day day may dao bang pit-tdng ap luc d i u dupe g i n phi'a sau; g i n d i u khoan vao d i u may dao va lam cho d i u khoan quay va day
4 Day may dao vao: hoan qua trinh day may dao bdng Pittdng ap lue d i u
5 Dam bao khoang cua ong day ru\ pittdng ap lue d i u lai de dam bao khoang trdng dng day
6 Tha dng ndi xudng: dat Ing ndi xudng giiJa may dao da dupe day vao Idng d l t va pittdng dp lue
7 L i p •''^^**
dat dng ndi rdi day thao tac gilng budc 3, quay d i u khoan d may day va day Ing n l i p i t t d n g bdng ap luc d i u
,/^-^\:
Hinh 3: Lap dat ong noi rdi day
8 i-ioan qua trinh day dng ndi: hoan qua trinh day dng ndi bdng each tiln hanh day lap lai tuin tu gilng budc
9 Lam cho may dao tiin vi id dung d diem din eudi cun^ lap lai cac thao tac day lam eho may dao tien ve Id ddng d diem culi cung
10 Thao may dao: Nhle may dao khdi h i
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Hinh 4: Lam cho may dao tiSn vS Id ddng diem ddn cuoi cung
dUng diem d i n eudi cung sau da hoan thdnh viec lap dat Ing d i n , thao bd toan bd cdc thilt bj day
Vdi eac uu diem vupt trdi, phuong phdp SUISHIN
Qua trinh lip dat may dao, thik bi day ong ndi cua mot dif an tai Nhat Ban
(phuong phap day) nen dupe quan tam ddu tu, nghien eUu, chuyen giao cdng nghe, khuyin khich ap dung thi cdng cac cdng trinh nglm ddthi
Vdn d l cong trinh ngam Luat Dd thj: Theo xu hudng phat trien cua dd thi hien dai, cac cdng trinh nglm dd thj khdng the thilu va cang dupe quan tam ddu tu xay dung Trong he thing van ban phap quy hien nay, cd mot s i van ban d l cap d i n cdng trinh nglm dd thi Trong dd ed Nghj djnh sd 39/2010/NQ-CP cua Chinh phu ban hanh 07/4/2010 ve" qudn ly khdng gian xay dung nglm dd thj Nghj djnh ed hieu lue thi hanh ke tir ngdy 25/5/2010 vd thay t h i Nghj djnh s6 41/2007/ND-CP 22/3/2007 eua Ctiinh phu y'e xay dung nglm dd thj Nghj djnh bao gdm chuong vd 33 dieu, dua cdc quy djnh vl quy hoach, khao sat, thilt ke, xay dung, qudn ly vd sddung khong gian nglm dd thj
Tai nriue chuong III v l "Thi cdng xdy dung cong trinh nglm dd thj" Nghj djnh da dua cdc quy djnh thi cong xdy dung cdng trinh dudng day, dudng dng nglm, hao, cdng be ky thuat (Dilu 20) va cdng trinh giao thong nglm, cdng cdng nglm, nen, ddu m i l t i n g ky thuat ngam (Dilu 21) Tuy nhien, Nghj djnh chua cd quy djnh eu the ndo ve viec sd dung cdng nghe, phuong phdp thi cdng cong trinh nglm dd thj nhu "khuyin khich dp dung phuong phdp ndo, phai ddo hay khdng dao?"
Nhu vay chung ta dang thieu ede van ban phap quy quy djnh rd phuong phdp, cdng nghe thi cong cdng trinh nglm dd thj dam bao cdc tieu chi md Nghi djnh 39 dua nhu Bdo ddm an toan cho ngudi vd cdng trinh, ban e h l anh hudng d i n hoat ddng binh thudng cua dd thj, cdc cdng trinh Ian can vd ben tren, bao dam ve sinh mdi trudng