QUAN HE GIUA CONG TRJNH CAUVA HA T A N G KY THUAT TRONG flO THj - CHIEU SANG cAu TRONG BO THI TRUC KS N G U Y E N T I E N H O A , K S LE T R U N G C o n g ty T N H H M T V C h i d u s a n g v a T B D T C KIEN hieu sang cae cong trinh kien true la mot phan quan trpng he t h i n g c h i l u sang thi (Hlnh 1) d Ha Npi e h i l u sang cac cong trinh k i l n true da duoc cac co quan, ban nganh, p h i quan tam, dau tu nhu: khu vue Lang Bac Thanh co, nha hat Ldn nha khach Chinh phu cac cong trinh xung quanh ho Hoan Kiem Tuy nhien, mot thuc te khach quan, ngoai cac cong trinh da neu tren dia ban Thu cac cong trlnh kien true dep, CO t l m nhin Idn cd the quan sat t d xa n h i l u hudng la r i t it Do hieu qua eua viec chieu sang k i l n tnic han c h l , cae diem n h l n anh sang v l ban dem chua nhieu Hinh 1: Chieu sang kiin true la mot thinh phin quan trpng he thong chieu sang thj V\ vay, Ha Npi da chi dao chieu sang nham tao diem nhan ve dem tai cac nut giao cau vupt dudng bp tren dia ban thu gom cac nut sau: Ham dudng bo Kim Lien: c l u vupt N g a T u S d ; Nut giao thong Nam Chuong Duong; Dudng vanh dai tren cao (nut giao dudng Nguyen Trai - Khult Duy T i l n ) ; Dudng vanh dai tren cao (nut giao duong Le Van Luong - Khuat Duy Tien); Dudng vanh dai tren eao (nut giao dUdng Tran Duy Hung - Khuat Duy T i l n ) ; Cau vupt Nga T u Vpng; c l u vupt Mai Dich; Cau vupt nut giao Nam Hong; 10 Cau vupl nut giao Lang Ha - Huynh Thuc Khang; 11 Cau VLWt nut giao Nut giao Chiia Boc - Thai Ha Cac cong trinh tren co tam nhin Idn, co the quan sat t d xa, va deu nam tat cac vi tri nut giao thong Idn va cua ngd quan trpng ciia Thu ed n h i l u ngudi qua lai Trong mpt quy thdi ^ian ngan, vdi yeu eau t h i l t k l - lap dat he thong chieu sang lam noi bat tinh tham my cao, co sUc thu hut Idn den ngudi dan, Don vi tu van thiet ke sau dac khao sat hien trang, xem xet, danh gia, nghien cdu da phan cac cong trinh dac trung, co tinh c h i t gidng de dua giai phap thiet ke cho phu hop Cu the nhu sau: Phan loai c d n g t r i n h Can c d vao tinh c h i t , dae diem, k i l n true phan loai: - Cac cdng trlnh cd k i l n true dep; H i m dudng bp Kim Lien, C l u vuot Nga T u Sd, Nut giao thong Nam Chuong Duong - Cac cau vupt eo kien true gian don: nut giao dudng Le Van Luong - Khuat Duy T i l n nut giao dudng Nguyen Trai - Khuat Duy T i l n , nut giao dudng T r i n Duy Hung - K h u l t Duy T i l n Cdu vuot Nga Tir Vpng Cau vupt Mai Dich C l u vupt nut giao Nam Hong, Cau vupt nut giao Lang Ha - Huynh Thiic Khang, Cau vuot nut giao Nut giao Chua Boc - Thai Ha Lua c h p n thiet bj, n g u d n s a n g a) Nguon sing Cae cong trinh tren deu nam d eac nut giao thong Idn, mde dp chieu sang ehung cao (chieu sang giao thong 30-50IX) Ol tao hieu dng ar* sang tot, lam noi bS cdng trinh ve demvi mang tinh trang tri l l hpi cao cung nhutiet kiem dien va ehi |*i quan ly van hanti, thong n h i t sd dung Hmh 2.:i£d la nguon sang cua ^g^j^^ ^ed nhi^u "^""^'^ mau s l e (full cokif) hieu suat phat sang cao (> 60lm/W), tuoi thp ldn(s 30,000h) (Hlnh 2,1) b) Thiit bi Vdi dae diem, tinh c h i t !a cac cau virct, ham chu dudng bp nen cac t h i l t bi phai dp kin khit c h i n g but ehdng nude cao (iP > 65}, ket cau vi>ig c h i c ching duoc rung dpng chi t i l t ga lap chac chan, thuan tien va tuoi thp Idn, de thay the P h u o n g a n b d trf c h i e u sang a) Ddi vdi cic cong trinh co kiin triic dep I N G U d l XAY DUNG SO THANG & 10 • I I - Q U A N H E G I Q A CONG TRINH CAU VA HA T A N G KY THUAT TRONG 0 TH] - CHIEU SANG CAU TRONG DO THI Cac edng trinh eo k i l n true dep nhu him dutfng bp Kim Lien, ciu vuutNga Tu-Sd (Hinh 3.1) nut giao thong Nam Chuxfng Dutfng Ngoai viec phai mang tinh trang tri cao, tfnh le hoi, hieu dng anh sang bat mat,,, Phuong an chieu sang eon phai khac hpa duoc eac dac diem kien true Hinh 3,1, Cau vUdtNga TUSd cua cong trinh, Giai phap chung la s d dung den led cac loai (dung den led d l de dang thay doi hieu ung anh sang nham dap ung yeu cau ve trang tri, le hpi,,.), phan bo anh sang cung nhu cong suat khac bo tri tren be mat cong trinh d l khac hoa lam ro cac chi tiet kien true dien hinh eua cong trinh, Muc dich cua giai phap khong nham tao mUc sang chung d i n g deu tren be mat cong trinh ma lao s u chenh lech va su tuong phan muc dp chieu sang va s u tucng phan ve mau sac, qua dd tao kha nang quan sat va nhan b i l t cac dac d i l m kien true cua cong trlnh Ngoai ra, viee bo tri va dieu khien chieu sang phai CO tinh dan hudng, tranh ehoi 16a gay mat tap trung cho ngudi tham gia giao thong, b) Cac cau vwpt co kiin true don gian Cac cau c6 k i l n true don gian nhu nut giao du&ng Le Van Luong - Khuat Duy Tien, nut giao dutfng Nguyen Trai - Khuit Duy TiSn (Hinh 3.2) nut giao du6ng Trin Duy Hung - Khuat Duy Tiin Cau vupt Nga Tif Vong, Cau vi/cft Mai Dich (Hinh 3.3) Ciu vuut nut giao Nam Hdng Cau vwpt nut giao Lang Ha - Huynh Thuc Khang Cau vuut nut giao nut giao Chua Boc ' Thai Ha) Day la cac nut giao thdng Idn, eo tam quan sat rong, ed the quan sat t d xa K i l n true cac clu kha gian don.Vi vay, hlnh thUc c h i l u sang mang tinh trang tri, le hpi la chinh Hinh 3.2 Nut giao thdng Nguyen Trai Khuit Duy Tien dung eac den pha Led 36W chieu sang cac tru eau va bo tri d6n Led Block 7W (hoae cac den pha led 36W) doc theo hai ben , elu Phuong an chieu sang: s d Hinti 3: Ciu vm Mai Dich n h i m tao d i l m n h l n Den dUOc d i l u khien thay doi mau theo eac chuong trinh khac nham lam noi bat va tang tinh trang tri tren c l u Do t h i l t k l , thi cdng mpt thdi gian ngan, qua trinh khao sat, c h i l u thd, lua chpn goc chieu, goc md cua mot s l den chua hpp ly (trong viec thiet k l c h i l u sang my thuat cac cong trlnh kien true, viec nghien ctAi c h i l u thu de lua chon thiet bi eung nhu goc c h i l u , goc md la h i t sUc quan trpng) MM khac de dam bao an ninh, phong tranh viec mat trpm theo yeu eau ciia chu dau tu cung nhu don vi van hanh, phuong an chieu sang tru cau phai e h i l u t d tren xudng (ehilu dudi len cho hieu qua anh sang tot hon) eung anh hudng khong nhd den hieu qua c h i l u sang Nhung nhin tong the, mpt s l han c h l tren la khong dang ke Vdi hinh thuc chieu sang mang tinh trang tri le hpi ket hpp vdi viec chieu sang my thuat doi vdi cae eong trinh eo kien true dep, Phuong an c h i l u sang phu hop vdi tung eong trlnh, Sd dung cong nghe den Led, tiet kiem dien nang, dieu khien thay ddi mau sac anh sang mot each linh dong bang nhieu chuong trinh dieu khien He thong chieu sang trang tri kien true da lam noi bat tao dien mao m d cho cong trinh dem ve, da dupc cac ban nganh, chuyen gia va ngudi dan danh gia cao (Hinh 3.4), Qua viec d i u t u x a y dung he thong chieu sang cac cau vupt ducrig bp tren co t h l rut mot so kinh nghiem sau: Viec d i u H\nh 3.A: Ham dUdng bd Kim Uen Bang ^^ c h i l u s a n g dien tif ngoai viec han ch§ phin tho cung trang tri k i l n cua dam be tdng giup tuyen tnjySn ve ( r u e c h o c a c an toan giao thong cung nhu cac chu c l u vUOt dudng truong cua phd bg jg mpt chu truong dung dan, dem lai hieu qua xa hoi cao Tang cong nang sir dung ciJa cau: ngoai cong nang ehinh la ILTU thdng eac phuong tien giao thong them cong nang trang tri, cac bang dien tu ga tren eau mang thong tin tuyen truyen, quang cao ve an toan giao thong, ve chu truong cua Thanh Viec su dung cong nghe den Led chieu sang trang tri k i l n true la xu the mdi; ngoai viee tiet kiem dien nang, it nhiem moi trudng, ben eao, den Led eo the dieu khien, kiem soal pham vi, mde dp sang toi, thay doi mau sac chuong trinh chieu sang mpt cac d l dang; cac den thong dung 6\Jdc su dung hien la den pha Led vuong (hoac tron) 18W300W, den pha Led (dai 0,5-1,2m) 18W-50W, cac block nhin true t i l p va cac day chip led,,, Trong chieu sang kien true, viec ehieu thd de lira chon cac thong so den nhu: goc md mau sac, nhiet dd mau, chi so hoan mau CRI,,,va goc chieu vi tri dat den la het sue quan t r o n g ^ NGUGJI XAY DUNG SO T H A N G & 10 -