Khoom taw qhia
Railway truss choj hais txog ib tug choj nrog truss raws li lub ntsiab load-bearing tivthaiv ntawm lub superstructure.Tus choj truss feem ntau yog tsim los ntawm lub ntsiab choj ncej, sab sauv thiab qis kab rov tav thiab longitudinal kev twb kev txuas systems, tus choj portal ncej thiab intermediate cross brace, thiab choj lawj system.
Daim ntawv thov khoom
Feem ntau siv rau railway choj los yog railway viaducts thiab overpasses nrog me me spans.
Cov qauv khoom
1. Truss choj yog ib daim ntawv ntawm tus choj.
2. Truss Choj feem ntau pom nyob rau hauv txoj kev tsheb ciav hlau thiab kev nthuav dav;Nws muab faib ua ob hom ntawm lub zog chord sab sauv thiab qis chord quab yuam.
3. Lub truss yog tsim los ntawm sab sauv chord, qis chord thiab plab pas nrig;Daim ntawv ntawm lub plab pas nrig yog muab faib ua oblique abdominal pas nrig, ncaj abdominal pas nrig;Vim tias qhov ntev thiab qhov sib luag ntawm tus pas nrig nws tus kheej, txawm hais tias kev sib txuas ntawm cov pas nrig yuav "tso", qhov tseeb pas nrig kawg dabtsi yog khoov lub sijhawm feem ntau me me, yog li kev tsim thiab kev tsom xam tuaj yeem yooj yim li "hinged".
4.Nyob rau hauv ib lub truss, lub chord yog cov tswv cuab uas ua rau lub periphery ntawm lub truss, nrog rau sab sauv chord thiab qis chord.Cov tswv cuab uas txuas rau sab sauv thiab sab chords hu ua cov tswv cuab hauv web.Raws li cov lus qhia sib txawv ntawm cov tswv cuab hauv lub vev xaib, lawv tau muab faib ua kab pheeb ces kaum thiab ntsug rods.
Lub dav hlau uas cov chords thiab webs nyob yog hu ua lub dav hlau girder.Tus choj qhov siab ntawm tus choj loj-span hloov raws qhov kev taw qhia kom tsim ib txoj hlua nkhaus truss;qhov nruab nrab thiab me me spans siv qhov siab tas li truss, uas yog hu ua txoj hlua ncaj nraim los yog txoj hlua ncaj nraim.Cov qauv truss tuaj yeem tsim rau hauv lub nqaj lossis koov choj, thiab tuaj yeem siv los ua cov nqaj loj (lossis stiffening beam) hauv kev txhawb nqa cable.Feem ntau ntawm cov choj truss yog tsim los ntawm steel.Tus choj truss yog cov qauv hollow, yog li nws muaj qhov hloov tau zoo rau ob lub lawj.
Khoom zoo
1. siab bearing peev
2. kev tsim kho ceev ceev
3. txuag hluav taws xob thiab kev tiv thaiv ib puag ncig
4. lub tsev zoo nkauj
5.zoo seismic kev ua tau zoo
6. kev ruaj ntseg zoo
