Hauv kev tsim vaj tsev niaj hnub no, kev thauj mus los, kev lag luam, thiab kev tsim kho hluav taws xob,qauv hlau, nrog nws ob qho zoo hauv cov khoom siv thiab cov qauv, tau dhau los ua lub zog tseem ceeb tsav tsheb tshiab hauv kev siv tshuab engineering. Siv hlau ua nws cov khoom siv thauj khoom tseem ceeb, nws hla dhau cov kev txwv ntawm cov qauv ib txwm muaj los ntawm kev tsim khoom lag luam thiab kev teeb tsa modular, muab cov kev daws teeb meem zoo rau ntau yam haujlwm nyuaj.
Kev Txhais thiab Xwm Txheej ntawm Cov Qauv Hlau
Cov qauv hlau yog hais txog cov qauv tsim uas muaj cov khoom siv thauj khoom uas muaj cov khoom siv thauj khoom ntau.cov phaj hlau, cov seem hlau (H beams, Cov channel U, lub kaum sab xis hlau, thiab lwm yam), thiab cov kav hlau, ruaj ntseg los ntawm kev vuam, cov ntsia hlau muaj zog, lossis rivets. Nws lub ntsiab lus yog siv cov hlau lub zog siab thiab kev tawv kom sib npaug hloov cov khoom thauj ntsug (qhov hnyav tuag thiab qhov hnyav khoom siv) thiab cov khoom thauj kab rov tav (cua thiab av qeeg) los ntawm lub tsev lossis qhov project mus rau nws lub hauv paus, kom ntseeg tau tias cov qauv ruaj khov. Piv rau cov qauv pob zeb, qhov zoo ntawm cov qauv hlau yog nyob rau hauv lawv cov khoom siv kho tshuab: lawv lub zog tensile tuaj yeem ncav cuag ntau dua 345 MPa, ntau dua 10 npaug ntawm cov pob zeb ib txwm muaj; thiab lawv cov yas zoo heev tso cai rau lawv kom deform hauv qab qhov hnyav yam tsis tawg, muab ob npaug lav ntawm kev nyab xeeb ntawm cov qauv. Cov yam ntxwv no ua rau lawv tsis tuaj yeem hloov pauv tau hauv cov xwm txheej loj, siab, thiab hnyav.
Cov Hom Hlau Tseem Ceeb
(I) Kev faib tawm los ntawm Cov Qauv
Cov Qauv Rooj Vag: Cov qauv no, muaj cov kem thiab cov ntoo, tsim cov qauv "rooj vag", nrog rau lub kaw lus txhawb nqa. Nws yog qhov tsim nyog rau cov chaw tsim khoom lag luam, cov chaw khaws khoom xa khoom, cov khw muag khoom loj, thiab lwm yam qauv. Cov qauv dav dav yog txij li 15 txog 30 meters, nrog qee qhov tshaj 40 meters. Cov khoom tuaj yeem ua tiav hauv cov chaw tsim khoom, tso cai rau kev teeb tsa ntawm qhov chaw hauv tsuas yog 15 txog 30 hnub. Piv txwv li, JD.com's Asia No. 1 Logistics Park warehouses feem ntau siv hom qauv no.
Cov Qauv Truss: Cov qauv no muaj cov pas nrig ncaj nraim txuas nrog cov nodes los tsim cov duab peb ceg lossis trapezoidal. Cov pas nrig tsuas yog raug rau cov zog axial, siv tag nrho lub zog ntawm cov hlau. Cov qauv Truss feem ntau siv rau hauv cov ru tsev chaw ua si thiab cov choj loj. Piv txwv li, kev kho dua tshiab ntawm Beijing Workers' Stadium siv cov qauv truss kom ua tiav qhov ntev 120-meter tsis muaj kem.
Cov qauv thav duab: Ib lub kaw lus chaw uas tsim los ntawm cov ntoo thiab cov kem sib txuas ua ke muab cov phiaj xwm hauv pem teb uas yooj ywm thiab yog qhov kev xaiv tseem ceeb rau cov tsev ua haujlwm siab thiab cov tsev so.
Cov qauv ntawm daim phiaj: Ib daim phiaj uas muaj ntau tus tswv cuab, feem ntau muaj cov pob zeb peb ceg thiab plaub ceg, muaj kev ruaj khov zoo thiab tiv taus av qeeg zoo heev. Lawv siv dav hauv cov chaw nres tsheb dav hlau thiab cov chaw sib tham.
(II) Kev faib tawm los ntawm Cov Yam Ntxwv ntawm Kev Thauj Khoom
Cov khoom siv khoov: Sawv cev los ntawm cov ntoo khaub lig, cov khoom no tiv taus lub sijhawm khoov, nrog rau kev nias rau sab saud thiab kev nruj rau hauv qab. Lawv feem ntau siv H-sections lossis cov seem welded, xws li crane beams hauv cov nroj tsuag kev lag luam, thiab yuav tsum ua tau raws li ob qho tib si lub zog thiab kev tiv taus qaug zog.
Cov tswv cuab uas raug thauj khoom axial: Cov tswv cuab no tsuas yog raug rau axial tension/compression, xws li truss tie rods thiab grid members. Tie rods yog tsim los rau lub zog, thaum compression rods xav tau kev ruaj khov. Cov raj voj voog lossis cov hlau steel feem ntau yog siv. Cov khoom uas raug thauj khoom eccentrically: Cov no raug rau ob qho tib si axial forces thiab bending moments, xws li cov ncej ncej. Vim yog qhov eccentricity ntawm lub nra hnyav ntawm qhov kawg ntawm lub beam, symmetrical cross-sections (xws li lub thawv kem) yog qhov yuav tsum tau los sib npaug cov zog thiab deformations.
Cov Kev Zoo Tseem Ceeb ntawm Cov Qauv Hlau
(I) Cov Khoom Siv Kho Tshuab Zoo Kawg Nkaus
Lub zog siab thiab qhov hnyav tsawg yog qhov zoo tshaj plaws ntawm cov qauv hlau. Rau ib qho kev ncua, qhov hnyav ntawm lub nqaj hlau tsuas yog 1/3-1/5 ntawm lub nqaj hlau. Piv txwv li, lub truss hlau 30-meter span hnyav kwv yees li 50 kg / m, thaum lub nqaj hlau hnyav tshaj 200 kg / m. Qhov no tsis yog tsuas yog txo cov nqi hauv paus (los ntawm 20% -30%) tab sis kuj txo cov teebmeem av qeeg, txhim kho kev nyab xeeb ntawm cov qauv av qeeg.
(II) Kev Tsim Kho Zoo
Tshaj 90% ntawm cov khoom siv hlau ua vaj tse yog ua tiav hauv cov chaw tsim khoom nrog kev ntsuas qhov tseeb ntawm millimeter. Kev teeb tsa hauv qhov chaw tsuas yog xav tau kev nqa thiab kev sib txuas. Piv txwv li, lub tsev ua haujlwm hlau 10-pem teb tsuas yog siv sijhawm 6-8 lub hlis txij li thaum tsim cov khoom mus txog thaum ua tiav, txo 40% lub sijhawm tsim kho piv rau cov qauv pob zeb. Piv txwv li, qhov project prefabricated steel nyob hauv Shenzhen tau ua tiav qhov ceev ntawm kev tsim kho ntawm "ib pem teb txhua xya hnub," txo cov nqi ua haujlwm hauv qhov chaw.
(III) Kev Tiv Thaiv Av Qeeg Muaj Zog thiab Kev Ruaj Khov
Cov hlau ua rau cov qauv hlau yaj tau lub zog los ntawm kev hloov pauv thaum muaj av qeeg. Piv txwv li, thaum muaj av qeeg xyoo 2008 hauv Wenchuan, lub Hoobkas tsim qauv hlau hauv Chengdu tsuas yog raug kev hloov pauv me me xwb thiab tsis muaj kev pheej hmoo ntawm kev tawg. Ntxiv mus, tom qab kev kho mob tiv thaiv xeb (galvanizing thiab txheej), hlau tuaj yeem muaj lub neej ua haujlwm ntawm 50-100 xyoo, nrog rau cov nqi kho qis dua li cov qauv pob zeb.
(IV) Kev Tiv Thaiv Ib Puag Ncig thiab Kev Ruaj Khov
Cov nqi rov ua dua cov hlau ntau dua 90%, ua rau nws rov ua dua thiab ua tiav tom qab rhuav tshem, tshem tawm cov khib nyiab tsim kho. Ntxiv mus, kev tsim kho hlau tsis tas yuav tsum muaj cov qauv lossis kev saib xyuas, xav tau kev ua haujlwm ntub tsawg kawg nkaus hauv qhov chaw, thiab txo cov pa phem plua plav ntau dua 60% piv rau cov qauv pob zeb, ua raws li cov ntsiab cai ntawm lub tsev ntsuab. Piv txwv li, tom qab kev rhuav tshem ntawm qhov chaw Ice Cube rau 2022 Beijing Winter Olympics, qee qhov khoom tau rov siv dua hauv lwm cov haujlwm, ua tiav kev rov ua dua cov peev txheej.
Kev Siv Dav Dav ntawm Cov Qauv Hlau
(I) Kev Tsim Kho
Cov tsev pej xeem: Cov chaw ua si, tshav dav hlau, cov chaw sib tham thiab chaw nthuav qhia, thiab lwm yam, vam khom cov qauv hlau kom ua tiav qhov dav thiab cov qauv dav.
Cov tsev nyob: Cov tsev nyob ua los ntawm cov hlau ua ntej tab tom nrov zuj zus thiab tuaj yeem ua tau raws li cov kev xav tau vaj tse raws li tus kheej.
Cov tsev lag luam: Cov tsev ua haujlwm siab heev thiab cov khw loj, uas siv cov qauv hlau los ua kom tiav cov qauv tsim nyuaj thiab kev tsim kho zoo.
(II) Kev Thauj Mus Los
Kev tsim choj: Cov choj hla dej hiav txwv thiab cov choj tsheb ciav hlau. Cov choj hlau muaj qhov dav dav thiab muaj zog tiv taus cua thiab av qeeg.
Kev Thauj Mus Los Hauv Tsheb Ciav Hlau: Cov chaw nres tsheb ciav hlau hauv av thiab cov kab teeb ntawm txoj kev tsheb ciav hlau.
(III) Kev Lag Luam
Cov chaw tsim khoom lag luam: Cov chaw tsim tshuab hnyav thiab cov chaw tsim hlau. Cov qauv hlau tuaj yeem tiv taus cov khoom siv loj thiab pab txhawb kev hloov kho cov khoom siv tom qab.
Cov chaw khaws khoom: Cov chaw khaws khoom txias thiab cov chaw xa khoom. Cov qauv thav duab portal ua tau raws li qhov yuav tsum tau khaws cia loj thiab ua tiav sai thiab ua haujlwm sai.
(IV) Zog
Cov chaw fais fab: Cov tsev loj ntawm lub chaw tsim hluav taws xob thermal thiab cov pej thuam xa hluav taws xob. Cov qauv hlau yog tsim rau cov khoom thauj khoom siab thiab cov chaw nyob sab nraum zoov uas nyuaj. Lub Zog Tshiab: Cov pej thuam cua turbine thiab cov tshuab photovoltaic mounting muaj cov qauv hlau sib dua rau kev thauj mus los thiab kev teeb tsa yooj yim, txhawb kev tsim kho lub zog huv.
Tiv tauj peb kom paub ntau ntxiv txog cov qauv hlau.
Pawg Neeg Muaj Koob Muaj Npe
Chaw Nyob
Kangsheng kev lag luam tsim kho cheeb tsam,
Wuqing koog tsev kawm ntawv, Tianjin nroog, Suav.
Teev
Hnub Monday-Hnub Sunday: Kev Pabcuam 24-teev
Lub sijhawm tshaj tawm: Cuaj hlis-30-2025