Dab tsi yog Steel Lattice Kem?
Cov kab lattice steel yog lub teeb yuag, thauj khoom-cov kabmob cov tswvcuab tsim los ntawm cov khoom siv steel hlau xws li cov ces kaum, cov kab lossis cov seem hollow, sib cuam tshuam los ntawm lacing tuav lossis batten daim hlau hauv daim duab peb sab lossis square. Cov chords tseem ceeb nqa lub axial load, thaum cov tswv cuab hauv lub vev xaib faib cov zog sab hauv nruab nrab ntawm cov chords kom cov kem ua raws li cov tswv cuab monolithic. Vim hais tias lub moj khaum qhib kom cov khoom nyob deb ntawm lub centroid, ib tug lattice kem ua tiav ib tug loj lub vojvoog ntawm gyration thiab siab buckling tsis kam nrog ntau yam steel tsawg tshaj li ib tug khoom - seem kem ntawm vaj huam sib luag load peev xwm.
Yog vim li cas Lattice kab yog siv rau kis ntauwd
Cov kab hluav taws xob siv hluav taws xob tso siab rau cov yees uas muaj zog, lub teeb thiab kev lag luam los txhim kho hauv thaj chaw deb. Qhov qhib lattice geometry teb tag nrho peb qhov yuav tsum tau ua:
Cua permeability: qhov qis solidity piv ntawm cov lattice tso cai rau cua kom dhau los ntawm cov qauv, txo cov cab coefficient piv nrog cov khoom seem thiab txo qis lub sijhawm tig ntawm lub hauv paus ntauwd.
Cov khoom siv tau zoo: cov quab yuam yog nqa los ntawm chords thiab kab pheeb ces kaum hauv qhov nro ncaj qha lossis compression, yog li lub truss txhawb nqa siab nrog tsawg kawg nkaus steel tonnage, uas kuj txo cov kev cai hauv paus.
Logistics thiab erection: cov tswv cuab yog khw-fabricated, kub-dip galvanized thiab sib sau ua ke ntawm qhov chaw nrog siab- lub zog bolted kev sib txuas, zam kev sib tsoo hnyav thiab tso cai thauj cov khoom sib sib zog nqus mus rau qhov chaw nyuaj.
Cov qauv txheej txheem tib yam siv thoob plaws qhov hluav taws xob ntau, los ntawm cov kab xa tawm mus rau ultra-siab-voltage transmission systems, thiab rau telecommunications towers qhov siab, payload thiab cua kev ua tau zoo yog qhov tseem ceeb.
Daim ntawv thov hla cov chav kawm Voltage
| Chav kawm voltage | Hom qauv | Cov ntawv sau |
|---|---|---|
| Kev faib tawm (qis dua 110 kV) | Ib -circuit lossis ob-circuit lattice towers, H-frame structures | Lub kaum sab xis, nruab nrab qhov siab, lub hauv paus yooj yim |
| Qhov hluav taws xob siab (110 kV - 220 kV) | Nws tus kheej- txhawb nqa cov kav hlau txais xov | Kub-dip galvanized cov tswv cuab, bolted los ua ke, dej khov thiab cua loads ib lub zos code |
| Ntxiv - siab voltage (330 kV - 750 kV) | Loj plaub- ceg ntoo ntoo nrog ntoo khaub lig- caj npab | Siab chord loads, hnyav gusset daim hlau, nruj fabrication tolerances |
| Ultra{0}}siab voltage (750 kV thiab siab dua) | siab heev plaub- ceg yees, guyed yees rau kev hla tshwj xeeb | Kev tswj hwm los ntawm tus neeg xyuas pib nro thiab ncua ntev; qaug zog thiab vibration xam tau tias yog ntawm kev sib txuas |
Tsim kev txiav txim siab rau kis ntauwd kab
Cov khoom tsim tawm: cov khoom thauj khoom thauj, cua thauj khoom, cov dej khov thiab cov khoom thauj khoom thauj yuav tsum tau ua ke raws li txoj cai tswjfwm, xws li ASCE 10 rau latticed steel xa cov qauv, IEC 60826 rau cov qauv tsim ntawm cov kab nyiaj siv ua haujlwm, EN 50341-1 rau cov kab hluav taws xob siv hluav taws xob, lossis GB 50545 rau Suav cov haujlwm.
Qib steel: cov qib muaj xws li S235 thiab S355 rau EN 10025-2, Q235B thiab Q355B rau GB/T 1591, thiab ASTM A36 lossis A572 Qib 50. Qib xaiv sib npaug zog nrog weldability thiab muaj.
Kev tiv thaiv corrosion: kub-dip galvanizing rau ISO 1461 yog tus qauv kev tiv thaiv rau cov kav hlau txais xov vim nws tiv thaiv cov txheej txheem sib koom ua ke thiab yuav tsum tau saib xyuas me ntsis ntau xyoo dhau los ntawm kev pabcuam.
Fabrication zoo: cov tswv cuab txiav, qhov xuas nrig ntaus thiab vuam ua raws li cov chav kawm ua tiav tau teev tseg hauv EN 1090-2 lossis cov txheej txheem tsim khoom sib xws, nrog rau qhov ntsuas qhov ntev ntawm lub khw.
Lattice Ntauwd vs Monopole Ntauwd
| Feature | Lattice pej thuam | Monopole ntauwd |
|---|---|---|
| Qauv qauv | Spatial truss ntawm cov ces kaum, raws los yog raj nyob rau hauv daim duab peb sab los yog square layout | Ib leeg tapered polygonal steel ncej |
| Qhov siab muaj peev xwm | Cov qauv siab heev ua tiav; qhov siab txwv tsuas yog los ntawm lub hauv paus thiab logistics | Feem ntau siv rau qhov siab qis mus rau nruab nrab |
| Cua tus cwj pwm | Qhib lub moj khaum txo cov cua load | Khoom bluff lub cev nrog siab dua luag |
| Khoom siv thiab erection | Tsawg raw khoom hnyav; ntau teb bolting ua hauj lwm | Cov khoom siv ntau dua; ceev teb erection |
| Kev tu | Kev tshuaj xyuas tsis tu ncua ntawm bolted pob qij txha thiab txheej | Cov khoom tsawg dua tab sis lub hauv paus seem yuav tsum tau ceev faj tiv thaiv corrosion |
Cov lus nug nquag
Vim li cas cov tuam tsev sib kis tau tsim ua cov kab lattice?Lattice towers ua tiav lub zog siab - rau- qhov hnyav piv thiab tso cai rau cua kom dhau los ntawm lub moj khaum, txo cov loads sab nraud. Cov qauv qhib kuj tseem txo cov khoom siv thiab cov nqi hauv paus piv nrog cov khoom siv -section lwm txoj.
Dab tsi steel qib yog siv rau lattice kis tau tus yees?Cov qib sib xws yog S235JR thiab S355JR/J0/J2 rau EN 10025-2, Q235B thiab Q355B rau GB/T 1591, thiab ASTM A36 lossis A572 Qib 50. Cov qib raug xaiv raws li cov tswv cuab rog, tuab thiab qhov project specification.
Cov tswv cuab ntawm lattice ntauwd txuas nrog li cas?Cov tswv cuab tau txuas nrog siab - lub zog bolts ntawm gusset daim hlau los yog los ntawm vuam hauv khw. Bolted teb kev sib txuas ua kom yooj yim erection, txo cov huab cua nyob thiab ua kom ncaj nraim.
Cov lattice towers puas siv tau rau hauv nroog lossis thaj chaw nyob?Lawv tuaj yeem ua tau, tab sis lawv cov hneev taw thiab kev ua lag luam zoo li ua rau lawv tsis tshua muaj nyob hauv cov cheeb tsam nroog loj, qhov twg monopoles feem ntau nyiam. Hauv kev xyaum, kev xaiv yog tsav los ntawm qhov siab, load, txoj cai - ntawm - txoj kev thiab zoning yuav tsum.
Yuav ua li cas tiv thaiv corrosion yog siv rau kis tau tus yees?Kub-dip galvanizing rau ISO 1461 yog qhov kev tiv thaiv siv dav tshaj plaws. Duplex systems nrog rau cov xim pleev xim ntxiv yog teev nyob rau hauv kev txhoj puab heev ntug hiav txwv dej los yog muaj cua.
Cov qauv tsim dab tsi tswj xyuas cov qauv xaim xaim?Cov ntaub ntawv siv feem ntau yog ASCE 10, IEC 60826, EN 50341-1 thiab GB 50545, ua ke nrog cov qauv tsim xws li EN 1090-2 thiab GB / T 2694 rau galvanized steel yees.