avant thuyét min a an thep 2 MUCLUC NHAN XET CUA GIAO VIEN .. 2. KICH THUGC CHINH CUA KHUNG NGANG 2.1. Theo phneong dimng: 2.2. Theo phuong ngang: 2.3. He gidng nha. 24. Hé giding mii. 24.1. Hé giing tong mat phiing eanh ten. 2.4.2. HG giang trong mat phing ednh died 2.4.3. HG giang dimg. 2.4.4. He giang 6 cot PHAN II. TINH TOAN KHUNG NGANG.. 1. TAL TAC DUNG TRONG LEN KHUNG LLL. Tai trong therdng xuyén (tinh tdi). LLL. Trong brong mv 1.1.2. Trong hong bain thin dan va hé ging: son . 1.2. Tai trong tam that do thi cng va sia chiza mai (hoat tai: u TAT TRONG TAC DUNG LEN COT... 2.1. Tait do phn tue ctia dn. 2.2. Do trong long dim cau tree: 2.3. Do dp lie ding ciia bank xe ( 24. Do lite hm ctia xe con T:. 2.5. Teéc dung ctta tdi trong gi lén kiune.. 2.5.1. Gi6 tinh tic dung len c¢ 2.5.2. Tai rong gi tie dung len dim: i tp trung.. 3. TINH NOI LUC KHUNG 3.1. Cée gid thiét tinh Khung tinh. 3.2. Xd dinh noi hee Khungs. KIuung dine gid Un hapt vii moi loai tai trong ring I. 17 PHAN IIL THIET KE TIET DIEN COT.. 1, CAC THONG SO TINH COT. LL. Thiét ké oft trén (ct date 16 hap han): LAL. Kigm tra 6ndinh x— x: 1.1.2. Kiém wa dndinh y— y 1.1.3, Kiém tra én din cue b6: . 12. Thier ké cr cot (ege rng than ging) = Cap ngi lee nguy hiém nhds 6118 dién HE 1.2.1, Chon tiét dign nbiinh ct: «0. 1.2.2. Kid um li tétdign o6t di chon... 1.3. Tink lién két thank giang vo nhdnh cot. 2. THIET KE CHI TIET COT edu true Trang | ntpsshwnustidesharenetisieshowerbed_codeheyDTFAROSLICLOG ‘vesavant thuyét min a an thep 2 2.3.2, Tinh dam dé ..onernenn 23.3. Tih an ngin arin gia ob 2.34. Tinh bu long neo . 2.3.5. Tinh sudn bu Bng neo: PHAN LY. THIET KE DAN Vi KEO. 1. $0 BO CAC KiCH THUGC CHINH CUA DAN Vi KEO.... 2. TAL TRONG VA NOILUC CUA DAN Vi KEO... 2.1. Tai trong tae dung len dein vi K20... se aa 2.1.1, Tai trong thadng xuyén (tinh ta) 48 2.1.2. Hoat ti sta chita mii... 2.1.3. Momen dau dan. 2.2. Xie dink ni lc tinh todn ct he 2.2.1. Tinh tosin ndi re 2.2.2. T6 bgp ni hte dM... CHON TIET DIEN THANH DAN. 3.1. Chon tiét dign dan hop by 3.2. Chon vatkiém tra tit dign thanh dat... 3.2.1. Chon vi kiém tra tigt dign than céinh wén : 3.2.2. Chon va kiém tm tit dign than edn dudi:. o sone 3.2.3, Chon va kiém tra tit dign ese thanh bung dime : 35 3.2.4, Chon va kiém tra tiét dign cdc thanh bung xién_ 4. AUTO VA TINH TOAN MAT DAN. 4.1. iit died du dimn(niit A). 66 4.2. Nit trén die dan(N ie B) 70 4.3. Niit khong ¢6 noi thanh eénh (nit C). 71 4.4, Nitt c6 ndi thanh cdinh (nuit K). 73 4.5. Nit dink gia dn (nuit H).....00esnenonenneressonnonenonnnsneesnnennnnneeT6 46. Nit giita dan (Nit M).. ‘Trang 2 ntpsshwnustidesharenetisieshowerbed_codeheyDTFAROSLICLOGavant thuyét min a an thep 2 NHAN XET CUA GIAO VIEN Chir ky cita ging vien huéng din Trang 3 ntpsshwnustidesharenetisieshowerbed_codeheyDTFAROSLICLOGavant thuyét min a an thep 2 PHAN I. tind TOAN CHUNG Kétcdu chia Ie cia nhi xuéng A mt khung ngang gdm c6t va dan. Dé dam bio do ‘img theo phuong ngang nha, fién két gidta cOt va dan mAi duge thye hign B ign két Litn két gitta chin ct vi ming bé ting cét thép cing Ki fén két ngim cimg.vé so do khung: 1.80 LIEU THIET KE ‘Thiét ké Khung ngang nhi xuréng 1 ohip, 1 ting voi cic sé gu sau - Xa ngang tiét dign thay déi(chit D. = Séhrmg edu mye: 2 mse céu. - Site nding cau tye: Q = 100/20 T. ~ Ché d6 lam vig trung binh, - Nhip khung thiét ké theo nhip cdu tue: L = 36 m = Chigu dai nha: 120 m, = Bude c6t: 6 m. = Cao trinh dinh ray: Hi = 9.6m - Mai panen BICT tiét dign 1.5x6 = 9 me, d6 ddc mii i 1/10.Giin binh thang. ~ Vat ligu thép CCT34 c6: £=21 kN/em?, - M6 dun din héi E = 21x10* kN/en?. = Vang dp ie = Han tay ding que hin N42, bu Bng efp a9 ben 5.6. : TL, dia hinh B.Cé Wo= 9SdaN/nt = 0,95 kN/né = Be tong ming clip d6 bén B20, c6 Ry = 1,15 kN/en?. - Kétciu bao che, tung xay gach, tam tuéng BTCT. 2. KICH THUOC CHINH CUA KHUNG NGANG 2.1. Theo phrong dirng: ‘Cée mgt nén + 0.000,ta 66 cao trih dinh ray Hi = 9.6 m, nhip nha L=36m (theo dé a6 {n), Tai trong cu true Q= 100 T > 75 7, ché 4 Bim vige tring binh => 2 = 1000 mm = 1 m ( 2. khoiing cach ty tye dinh vi dén tim ray). ‘Ta €6:nhip khung B khoding céch git 2 tric ddinhj vi dirge xie dinh theo céng thie: L=La +24=LasL-2h=36-2x1=34m Tra bing F5. Cataloge cfu tre, ta 06 cde thing 98 v8 cd = 9100 mm, K = 4350 mm; Hy = 4000 mm; By = 400 mm; Trang 4 ntpsshwnustidesharenetisieshowerbed_codeheyDTFAROSLICLOGavant thuyét min a an thep 2 Trong a6: + Be: chidu rng tét digo clu tnx. + Br: phin dua ma cia cdu true phi ngodi ray. + Lee mhip clu nye. + Ha: chigu cao dim cd try. ~ Chicu cao tir mit ray cau tre dén day xi ngang: Hp =H. + 100mm +f Trong d6: + He: kich thie gabarit ciia cdu truc, tir mit ray dén diém cao nhat ctia xe con, Tra trong catalo cd mye. + 100; khe ho an toan gitta xe con va két cdu. +£ khe hé phy, xét 46 vong ciia két cdu mang lye mii va vige bé tf thanh giang cénh duéi, Lay bang f = (200 + 400) mm. Kich thurée He lay theo béi sé 200 mm. => H: = 4000+ 100 + 300 = 4400 mm = 44m = Cao d6 mit ray: Hi = 9,6 m = Chicu cao sir dung dirge tinh tir mit nén dén day dudi vi keo: Hyg =H) + Hb = 9,644; 14m = Chidu cao thre cla c6t trén durge tinh tir vai dé dim ciu tye dén mit dui day vi ko: Hi= Ho + Hic + He ‘Trong a6: i 10, + He: cl cao dim cau true lay bi ) hip cita cau trye (bude cot 5 ahi B), a Hes (Foj5)x6=(075+06 Chon Ha = 0.7 m + Hy: phan et chin dudi mit nén. Hs = 1m. + He chidu cao cia ray vi dém ray phy thude loai => Hi= 44 +0,7 +0, 53.m Trang 5 ntpsshwnustidesharenetisieshowerbed_codeheyDTFAROSLICLOGavant thuyét min a an thep 2 ~ Chigu cao thyre cia dogn c6t durdi duroe tinh tte majt ming dén vi tri thay d6i Het dligin coe, Hu = Ha -He+ Fi Voi Hs la phan o6t chin dudi mit nén. Hy = 1m = Hs 14-5,341=97m ~ Chigu cao dau dan Ho phy thudc chiéu cao vi kéo tai g6i ra, vi kéo dién hinh dang hinh thang iy Hp = 2200 mm. Ta c6: — chit cao méi Ha = Ho+ 2.2. Theo phuong ngang: = Chigu cao ah-(bp lt (eras Choa hy =0,5 m. © Site uye: Q= 100 T> 75 T— uye dinh vj céch bién 1 dogn a = 500 mm 05m © Khoding hi an toan gitta cdu me va e6t, D= 60 +75 mm. Chon D=75 om ~ Khodng cach giip cau tryc khi hoat déng khong cham vao cot: AZB+(h—a)+D > _lm20,4+(0,5-0,5)+0,075 =0.475 m (tha). = Chigu cao tiét dign e6t dusi: hy ain (nha ché d6 lam vige trung binh) Voi HB chigu cao tin cf: H=H,+Hy=5,3+9,7=15m = 2 Heoh, 2 hx15=0,75 m 20 20 - Thuong thiét ké yc cia nhinh trong ¢6t duéi tring véi uy dim cdu edu rye nén chigu cao tit dign cOt dust: Trang 6 ntpsshwnustidesharenetisieshowerbed_codeheyDTFAROSLICLOGavant thuyét min a an thep 2 .S+1=15 m>0,75 m (tha dieu kign) ato @=100/20(7) 2.3. Hé giding nha. ‘Trong nhi e6ng abigp bing thép hé giing B b6 phn quan wong giip gi bn dish, cing tham gia chin cée tii trong theo phuemg doe nhi va gi cé dinh tam cée fd phan Khi thi cong. 2.4. Hé giding mii, HG giing mii bao gém céc thanh ging b6 ti trong pham vi tir cénh diréu dan ti en, duoc dit trong mat phiing canh trén, cénh dudi va giing dimg giita cdc giin. 2.4.1. H@ gidng trong mit phing cénh trén. H@ ging trong mit phiing c4nh trén cé téc dung bao dim én dinh cho céinh trén chit én citt gin, duge giing theo phong nging nha tai vi tri hai din mii du hdi, du khdi nhigt 6 va tai giita nha (céch nhau khong 50 = 60 mo. ‘Trang 7 ntpsshwnustidesharenetisieshowerbed_codeheyDTFAROSLICLOG 74avant thuyét min a an thep 2 2.4.2. H@ gidng trong mgt phing cénh dué HE giang trong mat phing cinh duéi duge dat tai vi ui e6 giing céinh én, & hai dau hii nhigt 6 va khong sgitra, cach 50 + 60 m. 4 q at a q q Seo Geee $4 5% 2.4.3. Hé gidng ding He ging diimg 431 wong mit phiing céc thanh diinggid vi ui e6 dish cho din vi Keo, Trang 8 ntpsshwnustidesharenetisieshowerbed_codeheyDTFAROSLICLOG